63 files changed, 1669 insertions, 754 deletions
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 395ce1ef4..77c92512a 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -1,4 +1,4 @@
-name: CI-Release
+name: release
 on:
  push:
    branches:
@@ -132,7 +132,9 @@ jobs:
      - name: Create Release
        id: create_release
-        uses: actions/create-release@v1
+        # uses: actions/create-release@v1
+        # https://github.com/actions/create-release/pull/32
+        uses: fleskesvor/create-release@1a72e235c178bf2ae6c51a8ae36febc24568c5fe
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        with:
diff --git a/Cargo.lock b/Cargo.lock
index 67822cb8a..01e86ab0e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -88,7 +88,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "bstr"
-version = "0.2.9"
+version = "0.2.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "memchr 2.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -115,7 +115,7 @@ dependencies = [
 "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 [[package]]
@@ -131,37 +131,37 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "chalk-derive"
 version = "0.1.0"
-source = "git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5#ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5"
+source = "git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75#af48f302a1f571b3ca418f7c5aa639a144a34f75"
 dependencies = [
- "proc-macro2 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 [[package]]
 name = "chalk-engine"
 version = "0.9.0"
-source = "git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5#ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5"
+source = "git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75#af48f302a1f571b3ca418f7c5aa639a144a34f75"
 dependencies = [
- "chalk-macros 0.1.1 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-macros 0.1.1 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
 "rustc-hash 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 [[package]]
 name = "chalk-ir"
 version = "0.1.0"
-source = "git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5#ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5"
+source = "git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75#af48f302a1f571b3ca418f7c5aa639a144a34f75"
 dependencies = [
- "chalk-derive 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-derive 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
- "chalk-engine 0.9.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-engine 0.9.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
- "chalk-macros 0.1.1 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-macros 0.1.1 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
 "lalrpop-intern 0.15.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 [[package]]
 name = "chalk-macros"
 version = "0.1.1"
-source = "git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5#ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5"
+source = "git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75#af48f302a1f571b3ca418f7c5aa639a144a34f75"
 dependencies = [
 "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -169,24 +169,24 @@ dependencies = [
 [[package]]
 name = "chalk-rust-ir"
 version = "0.1.0"
-source = "git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5#ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5"
+source = "git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75#af48f302a1f571b3ca418f7c5aa639a144a34f75"
 dependencies = [
- "chalk-derive 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-derive 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
- "chalk-engine 0.9.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-engine 0.9.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
- "chalk-ir 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-ir 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
- "chalk-macros 0.1.1 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-macros 0.1.1 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
 ]
 [[package]]
 name = "chalk-solve"
 version = "0.1.0"
-source = "git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5#ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5"
+source = "git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75#af48f302a1f571b3ca418f7c5aa639a144a34f75"
 dependencies = [
- "chalk-derive 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-derive 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
- "chalk-engine 0.9.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-engine 0.9.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
- "chalk-ir 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-ir 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
- "chalk-macros 0.1.1 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-macros 0.1.1 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
- "chalk-rust-ir 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-rust-ir 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
 "ena 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "petgraph 0.4.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -214,7 +214,7 @@ dependencies = [
 [[package]]
 name = "console"
-version = "0.9.1"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "clicolors-control 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -326,7 +326,6 @@ name = "env_logger"
 version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "humantime 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -421,7 +420,7 @@ version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "bstr 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bstr 0.2.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "fnv 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "regex 1.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -444,21 +443,13 @@ dependencies = [
 ]
 [[package]]
-name = "humantime"
-version = "1.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "quick-error 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-[[package]]
 name = "idna"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "matches 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "unicode-bidi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-normalization 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-normalization 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 [[package]]
@@ -489,16 +480,15 @@ dependencies = [
 [[package]]
 name = "insta"
-version = "0.12.0"
+version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "console 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "console 0.9.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde_yaml 0.8.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "uuid 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 [[package]]
@@ -519,7 +509,7 @@ dependencies = [
 [[package]]
 name = "itoa"
-version = "0.4.4"
+version = "0.4.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
@@ -619,18 +609,18 @@ dependencies = [
 "crossbeam-channel 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 [[package]]
 name = "lsp-types"
-version = "0.69.0"
+version = "0.70.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "base64 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "bitflags 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
 "serde_repr 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -739,7 +729,7 @@ dependencies = [
 [[package]]
 name = "once_cell"
-version = "1.3.0"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
@@ -784,9 +774,9 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "proc-macro-hack 0.5.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro2 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 [[package]]
@@ -818,14 +808,14 @@ name = "proc-macro-hack"
 version = "0.5.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 [[package]]
 name = "proc-macro2"
-version = "1.0.7"
+version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -833,7 +823,7 @@ dependencies = [
 [[package]]
 name = "proptest"
-version = "0.9.4"
+version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
 "bit-set 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -858,7 +848,7 @@ name = "quote"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 [[package]]
@@ -902,12 +892,12 @@ version = "0.1.0"
 dependencies = [
 "cargo_metadata 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "crossbeam-channel 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "insta 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "insta 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "jod-thread 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "lsp-types 0.69.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lsp-types 0.70.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "parking_lot 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 [[package]]
@@ -979,9 +969,9 @@ dependencies = [
 "anymap 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "drop_bomb 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 "either 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "insta 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "insta 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "once_cell 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "once_cell 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "ra_arena 0.1.0",
 "ra_cfg 0.1.0",
 "ra_db 0.1.0",
@@ -1014,11 +1004,11 @@ name = "ra_hir_ty"
 version = "0.1.0"
 dependencies = [
 "arrayvec 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "chalk-ir 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-ir 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
- "chalk-rust-ir 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-rust-ir 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
- "chalk-solve 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5)",
+ "chalk-solve 0.1.0 (git+https://github.com/rust-lang/chalk.git?rev=af48f302a1f571b3ca418f7c5aa639a144a34f75)",
 "ena 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "insta 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "insta 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "lalrpop-intern 0.15.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "ra_arena 0.1.0",
@@ -1039,12 +1029,12 @@ dependencies = [
 "format-buf 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "fst 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "indexmap 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "insta 0.12.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "insta 0.13.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "join_to_string 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "once_cell 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "once_cell 1.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "proptest 0.9.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proptest 0.9.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "ra_assists 0.1.0",
 "ra_cfg 0.1.0",
 "ra_db 0.1.0",
@@ -1071,7 +1061,7 @@ dependencies = [
 "jod-thread 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "lsp-server 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "lsp-types 0.69.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lsp-types 0.70.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "parking_lot 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
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 "checksum quick-error 1.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a1d01941d82fa2ab50be1e79e6714289dd7cde78eba4c074bc5a4374f650dfe0"
 "checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
 "checksum ra_vfs 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "bc898f237e4b4498959ae0100c688793a23e77624d44ef710ba70094217f98e0"
@@ -1917,14 +1898,14 @@ dependencies = [
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum serde 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)" = "414115f25f818d7dfccec8ee535d76949ae78584fc4f79a6f45a904bf8ab4449"
 "checksum serde_derive 1.0.104 (registry+https://github.com/rust-lang/crates.io-index)" = "128f9e303a5a29922045a830221b8f78ec74a5f544944f3d5984f8ec3895ef64"
-"checksum serde_json 1.0.44 (registry+https://github.com/rust-lang/crates.io-index)" = "48c575e0cc52bdd09b47f330f646cf59afc586e9c4e3ccd6fc1f625b8ea1dad7"
+"checksum serde_json 1.0.45 (registry+https://github.com/rust-lang/crates.io-index)" = "eab8f15f15d6c41a154c1b128a22f2dfabe350ef53c40953d84e36155c91192b"
 "checksum serde_repr 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "cd02c7587ec314570041b2754829f84d873ced14a96d1fd1823531e11db40573"
 "checksum serde_yaml 0.8.11 (registry+https://github.com/rust-lang/crates.io-index)" = "691b17f19fc1ec9d94ec0b5864859290dff279dbd7b03f017afda54eb36c3c35"
 "checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 "checksum smallvec 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "44e59e0c9fa00817912ae6e4e6e3c4fe04455e75699d06eedc7d85917ed8e8f4"
 "checksum smol_str 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)" = "34836c9a295c62c2ce3514471117c5cb269891e8421b2aafdd910050576c4d8b"
 "checksum superslice 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ab16ced94dbd8a46c82fd81e3ed9a8727dac2977ea869d217bcc4ea1f122e81f"
-"checksum syn 1.0.13 (registry+https://github.com/rust-lang/crates.io-index)" = "1e4ff033220a41d1a57d8125eab57bf5263783dfdcc18688b1dacc6ce9651ef8"
+"checksum syn 1.0.14 (registry+https://github.com/rust-lang/crates.io-index)" = "af6f3550d8dff9ef7dc34d384ac6f107e5d31c8f57d9f28e0081503f547ac8f5"
 "checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
 "checksum termios 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "72b620c5ea021d75a735c943269bb07d30c9b77d6ac6b236bc8b5c496ef05625"
 "checksum text_unit 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e08bbcb7a3adbda0eb23431206b653bdad3d8dea311e72d36bf2215e27a42579"
@@ -1933,11 +1914,10 @@ dependencies = [
 "checksum threadpool 1.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e2f0c90a5f3459330ac8bc0d2f879c693bb7a2f59689c1083fc4ef83834da865"
 "checksum unicase 2.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "50f37be617794602aabbeee0be4f259dc1778fabe05e2d67ee8f79326d5cb4f6"
 "checksum unicode-bidi 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "49f2bd0c6468a8230e1db229cff8029217cf623c767ea5d60bfbd42729ea54d5"
-"checksum unicode-normalization 0.1.11 (registry+https://github.com/rust-lang/crates.io-index)" = "b561e267b2326bb4cebfc0ef9e68355c7abe6c6f522aeac2f5bf95d56c59bdcf"
+"checksum unicode-normalization 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)" = "5479532badd04e128284890390c1e876ef7a993d0570b3597ae43dfa1d59afa4"
 "checksum unicode-segmentation 1.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e83e153d1053cbb5a118eeff7fd5be06ed99153f00dbcd8ae310c5fb2b22edc0"
 "checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 "checksum url 2.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "829d4a8476c35c9bf0bbce5a3b23f4106f79728039b726d292bb93bc106787cb"
-"checksum uuid 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9fde2f6a4bea1d6e007c4ad38c6839fa71cbb63b6dbf5b595aa38dc9b1093c11"
 "checksum version_check 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
 "checksum walkdir 2.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "777182bc735b6424e1a57516d35ed72cb8019d85c8c9bf536dccb3445c1a2f7d"
 "checksum wasi 0.9.0+wasi-snapshot-preview1 (registry+https://github.com/rust-lang/crates.io-index)" = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
diff --git a/README.md b/README.md
index 4a76ea6e3..2f6ed1e05 100644
--- a/README.md
+++ b/README.md
@@ -4,10 +4,9 @@
 Rust Analyzer is an **experimental** modular compiler frontend for the Rust
 language. It is a part of a larger rls-2.0 effort to create excellent IDE
-support for Rust. If you want to get involved, check the rls-2.0 working group
+support for Rust. If you want to get involved, check the rls-2.0 working group:
-in the compiler-team repository:
-https://github.com/rust-lang/compiler-team/tree/master/content/working-groups/rls-2.0
+https://rust-lang.zulipchat.com/#narrow/stream/185405-t-compiler.2Fwg-rls-2.2E0
 Work on the Rust Analyzer is sponsored by
diff --git a/bors.toml b/bors.toml
index bf5553df4..0bc71860f 100644
--- a/bors.toml
+++ b/bors.toml
@@ -1,6 +1,6 @@
 status = [
    "Rust (ubuntu-latest)",
-    # "Rust (windows-latest)",
+    "Rust (windows-latest)",
    "Rust (macos-latest)",
    "TypeScript"
 ]
diff --git a/crates/ra_assists/src/assist_ctx.rs b/crates/ra_assists/src/assist_ctx.rs
index 43f0d664b..2ab65ab99 100644
--- a/crates/ra_assists/src/assist_ctx.rs
+++ b/crates/ra_assists/src/assist_ctx.rs
@@ -101,7 +101,6 @@ impl<'a, DB: HirDatabase> AssistCtx<'a, DB> {
        Some(assist)
    }
-    #[allow(dead_code)] // will be used for auto import assist with multiple actions
    pub(crate) fn add_assist_group(
        self,
        id: AssistId,
@@ -168,7 +167,6 @@ pub(crate) struct ActionBuilder {
 }
 impl ActionBuilder {
-    #[allow(dead_code)]
    /// Adds a custom label to the action, if it needs to be different from the assist label
    pub(crate) fn label(&mut self, label: impl Into<String>) {
        self.label = Some(label.into())
diff --git a/crates/ra_assists/src/assists/auto_import.rs b/crates/ra_assists/src/assists/auto_import.rs
new file mode 100644
index 000000000..69126a1c9
--- /dev/null
+++ b/crates/ra_assists/src/assists/auto_import.rs
@@ -0,0 +1,210 @@
+use hir::db::HirDatabase;
+use ra_syntax::{
+    ast::{self, AstNode},
+    SmolStr,
+    SyntaxKind::USE_ITEM,
+    SyntaxNode,
+};
+use crate::{
+    assist_ctx::{ActionBuilder, Assist, AssistCtx},
+    auto_import_text_edit, AssistId, ImportsLocator,
+};
+// Assist: auto_import
+//
+// If the name is unresolved, provides all possible imports for it.
+//
+// ```
+// fn main() {
+//     let map = HashMap<|>::new();
+// }
+// ```
+// ->
+// ```
+// use std::collections::HashMap;
+//
+// fn main() {
+//     let map = HashMap<|>::new();
+// }
+// ```
+pub(crate) fn auto_import<F: ImportsLocator>(
+    ctx: AssistCtx<impl HirDatabase>,
+    imports_locator: &mut F,
+) -> Option<Assist> {
+    let path_to_import: ast::Path = ctx.find_node_at_offset()?;
+    let path_to_import_syntax = path_to_import.syntax();
+    if path_to_import_syntax.ancestors().find(|ancestor| ancestor.kind() == USE_ITEM).is_some() {
+        return None;
+    }
+    let module = path_to_import_syntax.ancestors().find_map(ast::Module::cast);
+    let position = match module.and_then(|it| it.item_list()) {
+        Some(item_list) => item_list.syntax().clone(),
+        None => {
+            let current_file = path_to_import_syntax.ancestors().find_map(ast::SourceFile::cast)?;
+            current_file.syntax().clone()
+        }
+    };
+    let source_analyzer = ctx.source_analyzer(&position, None);
+    let module_with_name_to_import = source_analyzer.module()?;
+    if source_analyzer.resolve_path(ctx.db, &path_to_import).is_some() {
+        return None;
+    }
+    let proposed_imports = imports_locator
+        .find_imports(&path_to_import_syntax.to_string())
+        .into_iter()
+        .filter_map(|module_def| module_with_name_to_import.find_use_path(ctx.db, module_def))
+        .filter(|use_path| !use_path.segments.is_empty())
+        .take(20)
+        .map(|import| import.to_string())
+        .collect::<std::collections::BTreeSet<_>>();
+    if proposed_imports.is_empty() {
+        return None;
+    }
+    ctx.add_assist_group(AssistId("auto_import"), "auto import", || {
+        proposed_imports
+            .into_iter()
+            .map(|import| import_to_action(import, &position, &path_to_import_syntax))
+            .collect()
+    })
+}
+fn import_to_action(import: String, position: &SyntaxNode, anchor: &SyntaxNode) -> ActionBuilder {
+    let mut action_builder = ActionBuilder::default();
+    action_builder.label(format!("Import `{}`", &import));
+    auto_import_text_edit(
+        position,
+        anchor,
+        &[SmolStr::new(import)],
+        action_builder.text_edit_builder(),
+    );
+    action_builder
+}
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::helpers::{
+        check_assist_with_imports_locator, check_assist_with_imports_locator_not_applicable,
+        TestImportsLocator,
+    };
+    #[test]
+    fn applicable_when_found_an_import() {
+        check_assist_with_imports_locator(
+            auto_import,
+            TestImportsLocator::new,
+            r"
+            <|>PubStruct
+            pub mod PubMod {
+                pub struct PubStruct;
+            }
+            ",
+            r"
+            <|>use PubMod::PubStruct;
+            PubStruct
+            pub mod PubMod {
+                pub struct PubStruct;
+            }
+            ",
+        );
+    }
+    #[test]
+    fn applicable_when_found_multiple_imports() {
+        check_assist_with_imports_locator(
+            auto_import,
+            TestImportsLocator::new,
+            r"
+            PubSt<|>ruct
+            pub mod PubMod1 {
+                pub struct PubStruct;
+            }
+            pub mod PubMod2 {
+                pub struct PubStruct;
+            }
+            pub mod PubMod3 {
+                pub struct PubStruct;
+            }
+            ",
+            r"
+            use PubMod1::PubStruct;
+            PubSt<|>ruct
+            pub mod PubMod1 {
+                pub struct PubStruct;
+            }
+            pub mod PubMod2 {
+                pub struct PubStruct;
+            }
+            pub mod PubMod3 {
+                pub struct PubStruct;
+            }
+            ",
+        );
+    }
+    #[test]
+    fn not_applicable_for_already_imported_types() {
+        check_assist_with_imports_locator_not_applicable(
+            auto_import,
+            TestImportsLocator::new,
+            r"
+            use PubMod::PubStruct;
+            PubStruct<|>
+            pub mod PubMod {
+                pub struct PubStruct;
+            }
+            ",
+        );
+    }
+    #[test]
+    fn not_applicable_for_types_with_private_paths() {
+        check_assist_with_imports_locator_not_applicable(
+            auto_import,
+            TestImportsLocator::new,
+            r"
+            PrivateStruct<|>
+            pub mod PubMod {
+                struct PrivateStruct;
+            }
+            ",
+        );
+    }
+    #[test]
+    fn not_applicable_when_no_imports_found() {
+        check_assist_with_imports_locator_not_applicable(
+            auto_import,
+            TestImportsLocator::new,
+            "
+            PubStruct<|>",
+        );
+    }
+    #[test]
+    fn not_applicable_in_import_statements() {
+        check_assist_with_imports_locator_not_applicable(
+            auto_import,
+            TestImportsLocator::new,
+            r"
+            use PubStruct<|>;
+            pub mod PubMod {
+                pub struct PubStruct;
+            }",
+        );
+    }
+}
diff --git a/crates/ra_assists/src/assists/inline_local_variable.rs b/crates/ra_assists/src/assists/inline_local_variable.rs
index d0c5c3b8c..83527d904 100644
--- a/crates/ra_assists/src/assists/inline_local_variable.rs
+++ b/crates/ra_assists/src/assists/inline_local_variable.rs
@@ -47,6 +47,9 @@ pub(crate) fn inline_local_variable(ctx: AssistCtx<impl HirDatabase>) -> Option<
    };
    let analyzer = ctx.source_analyzer(bind_pat.syntax(), None);
    let refs = analyzer.find_all_refs(&bind_pat);
+    if refs.is_empty() {
+        return None;
+    };
    let mut wrap_in_parens = vec![true; refs.len()];
@@ -645,4 +648,16 @@ fn foo() {
 }",
        );
    }
+    #[test]
+    fn test_not_applicable_if_variable_unused() {
+        check_assist_not_applicable(
+            inline_local_variable,
+            "
+fn foo() {
+    let <|>a = 0;
+}
+            ",
+        )
+    }
 }
diff --git a/crates/ra_assists/src/doc_tests.rs b/crates/ra_assists/src/doc_tests.rs
index 5dc1ee233..65d51428b 100644
--- a/crates/ra_assists/src/doc_tests.rs
+++ b/crates/ra_assists/src/doc_tests.rs
@@ -11,6 +11,10 @@ use test_utils::{assert_eq_text, extract_range_or_offset};
 use crate::test_db::TestDB;
 fn check(assist_id: &str, before: &str, after: &str) {
+    // FIXME we cannot get the imports search functionality here yet, but still need to generate a test and a doc for an assist
+    if assist_id == "auto_import" {
+        return;
+    }
    let (selection, before) = extract_range_or_offset(before);
    let (db, file_id) = TestDB::with_single_file(&before);
    let frange = FileRange { file_id, range: selection.into() };
diff --git a/crates/ra_assists/src/doc_tests/generated.rs b/crates/ra_assists/src/doc_tests/generated.rs
index 7d84dc8fb..ec4587ce7 100644
--- a/crates/ra_assists/src/doc_tests/generated.rs
+++ b/crates/ra_assists/src/doc_tests/generated.rs
@@ -215,6 +215,25 @@ fn main() {
 }
 #[test]
+fn doctest_auto_import() {
+    check(
+        "auto_import",
+        r#####"
+fn main() {
+    let map = HashMap<|>::new();
+}
+"#####,
+        r#####"
+use std::collections::HashMap;
+fn main() {
+    let map = HashMap<|>::new();
+}
+"#####,
+    )
+}
+#[test]
 fn doctest_change_visibility() {
    check(
        "change_visibility",
diff --git a/crates/ra_assists/src/lib.rs b/crates/ra_assists/src/lib.rs
index 3337805a5..625ebc4a2 100644
--- a/crates/ra_assists/src/lib.rs
+++ b/crates/ra_assists/src/lib.rs
@@ -14,7 +14,7 @@ mod test_db;
 pub mod ast_transform;
 use either::Either;
-use hir::db::HirDatabase;
+use hir::{db::HirDatabase, ModuleDef};
 use ra_db::FileRange;
 use ra_syntax::{TextRange, TextUnit};
 use ra_text_edit::TextEdit;
@@ -77,6 +77,51 @@ where
    })
 }
+/// A functionality for locating imports for the given name.
+///
+/// Currently has to be a trait with the real implementation provided by the ra_ide_api crate,
+/// due to the search functionality located there.
+/// Later, this trait should be removed completely and the search functionality moved to a separate crate,
+/// accessible from the ra_assists crate.
+pub trait ImportsLocator {
+    /// Finds all imports for the given name and the module that contains this name.
+    fn find_imports(&mut self, name_to_import: &str) -> Vec<ModuleDef>;
+}
+/// Return all the assists applicable at the given position
+/// and additional assists that need the imports locator functionality to work.
+///
+/// Assists are returned in the "resolved" state, that is with edit fully
+/// computed.
+pub fn assists_with_imports_locator<H, F>(
+    db: &H,
+    range: FileRange,
+    mut imports_locator: F,
+) -> Vec<ResolvedAssist>
+where
+    H: HirDatabase + 'static,
+    F: ImportsLocator,
+{
+    AssistCtx::with_ctx(db, range, true, |ctx| {
+        let mut assists = assists::all()
+            .iter()
+            .map(|f| f(ctx.clone()))
+            .chain(
+                assists::all_with_imports_locator()
+                    .iter()
+                    .map(|f| f(ctx.clone(), &mut imports_locator)),
+            )
+            .filter_map(std::convert::identity)
+            .map(|a| match a {
+                Assist::Resolved { assist } => assist,
+                Assist::Unresolved { .. } => unreachable!(),
+            })
+            .collect();
+        sort_assists(&mut assists);
+        assists
+    })
+}
 /// Return all the assists applicable at the given position.
 ///
 /// Assists are returned in the "resolved" state, that is with edit fully
@@ -85,8 +130,6 @@ pub fn assists<H>(db: &H, range: FileRange) -> Vec<ResolvedAssist>
 where
    H: HirDatabase + 'static,
 {
-    use std::cmp::Ordering;
    AssistCtx::with_ctx(db, range, true, |ctx| {
        let mut a = assists::all()
            .iter()
@@ -95,19 +138,24 @@ where
                Assist::Resolved { assist } => assist,
                Assist::Unresolved { .. } => unreachable!(),
            })
-            .collect::<Vec<_>>();
+            .collect();
-        a.sort_by(|a, b| match (a.get_first_action().target, b.get_first_action().target) {
+        sort_assists(&mut a);
-            (Some(a), Some(b)) => a.len().cmp(&b.len()),
-            (Some(_), None) => Ordering::Less,
-            (None, Some(_)) => Ordering::Greater,
-            (None, None) => Ordering::Equal,
-        });
        a
    })
 }
+fn sort_assists(assists: &mut Vec<ResolvedAssist>) {
+    use std::cmp::Ordering;
+    assists.sort_by(|a, b| match (a.get_first_action().target, b.get_first_action().target) {
+        (Some(a), Some(b)) => a.len().cmp(&b.len()),
+        (Some(_), None) => Ordering::Less,
+        (None, Some(_)) => Ordering::Greater,
+        (None, None) => Ordering::Equal,
+    });
+}
 mod assists {
-    use crate::{Assist, AssistCtx};
+    use crate::{Assist, AssistCtx, ImportsLocator};
    use hir::db::HirDatabase;
    mod add_derive;
@@ -116,6 +164,7 @@ mod assists {
    mod add_custom_impl;
    mod add_new;
    mod apply_demorgan;
+    mod auto_import;
    mod invert_if;
    mod flip_comma;
    mod flip_binexpr;
@@ -168,15 +217,69 @@ mod assists {
            early_return::convert_to_guarded_return,
        ]
    }
+    pub(crate) fn all_with_imports_locator<'a, DB: HirDatabase, F: ImportsLocator>(
+    ) -> &'a [fn(AssistCtx<DB>, &mut F) -> Option<Assist>] {
+        &[auto_import::auto_import]
+    }
 }
 #[cfg(test)]
 mod helpers {
-    use ra_db::{fixture::WithFixture, FileRange};
+    use hir::db::DefDatabase;
+    use ra_db::{fixture::WithFixture, FileId, FileRange};
    use ra_syntax::TextRange;
    use test_utils::{add_cursor, assert_eq_text, extract_offset, extract_range};
-    use crate::{test_db::TestDB, Assist, AssistCtx};
+    use crate::{test_db::TestDB, Assist, AssistCtx, ImportsLocator};
+    use std::sync::Arc;
+    // FIXME remove the `ModuleDefId` reexport from `ra_hir` when this gets removed.
+    pub(crate) struct TestImportsLocator {
+        db: Arc<TestDB>,
+        test_file_id: FileId,
+    }
+    impl TestImportsLocator {
+        pub(crate) fn new(db: Arc<TestDB>, test_file_id: FileId) -> Self {
+            TestImportsLocator { db, test_file_id }
+        }
+    }
+    impl ImportsLocator for TestImportsLocator {
+        fn find_imports(&mut self, name_to_import: &str) -> Vec<hir::ModuleDef> {
+            let crate_def_map = self.db.crate_def_map(self.db.test_crate());
+            let mut findings = Vec::new();
+            let mut module_ids_to_process =
+                crate_def_map.modules_for_file(self.test_file_id).collect::<Vec<_>>();
+            while !module_ids_to_process.is_empty() {
+                let mut more_ids_to_process = Vec::new();
+                for local_module_id in module_ids_to_process.drain(..) {
+                    for (name, namespace_data) in
+                        crate_def_map[local_module_id].scope.entries_without_primitives()
+                    {
+                        let found_a_match = &name.to_string() == name_to_import;
+                        vec![namespace_data.types, namespace_data.values]
+                            .into_iter()
+                            .filter_map(std::convert::identity)
+                            .for_each(|(module_def_id, _)| {
+                                if found_a_match {
+                                    findings.push(module_def_id.into());
+                                }
+                                if let hir::ModuleDefId::ModuleId(module_id) = module_def_id {
+                                    more_ids_to_process.push(module_id.local_id);
+                                }
+                            });
+                    }
+                }
+                module_ids_to_process = more_ids_to_process;
+            }
+            findings
+        }
+    }
    pub(crate) fn check_assist(
        assist: fn(AssistCtx<TestDB>) -> Option<Assist>,
@@ -206,6 +309,38 @@ mod helpers {
        assert_eq_text!(after, &actual);
    }
+    pub(crate) fn check_assist_with_imports_locator<F: ImportsLocator>(
+        assist: fn(AssistCtx<TestDB>, &mut F) -> Option<Assist>,
+        imports_locator_provider: fn(db: Arc<TestDB>, file_id: FileId) -> F,
+        before: &str,
+        after: &str,
+    ) {
+        let (before_cursor_pos, before) = extract_offset(before);
+        let (db, file_id) = TestDB::with_single_file(&before);
+        let db = Arc::new(db);
+        let mut imports_locator = imports_locator_provider(Arc::clone(&db), file_id);
+        let frange =
+            FileRange { file_id, range: TextRange::offset_len(before_cursor_pos, 0.into()) };
+        let assist =
+            AssistCtx::with_ctx(db.as_ref(), frange, true, |ctx| assist(ctx, &mut imports_locator))
+                .expect("code action is not applicable");
+        let action = match assist {
+            Assist::Unresolved { .. } => unreachable!(),
+            Assist::Resolved { assist } => assist.get_first_action(),
+        };
+        let actual = action.edit.apply(&before);
+        let actual_cursor_pos = match action.cursor_position {
+            None => action
+                .edit
+                .apply_to_offset(before_cursor_pos)
+                .expect("cursor position is affected by the edit"),
+            Some(off) => off,
+        };
+        let actual = add_cursor(&actual, actual_cursor_pos);
+        assert_eq_text!(after, &actual);
+    }
    pub(crate) fn check_assist_range(
        assist: fn(AssistCtx<TestDB>) -> Option<Assist>,
        before: &str,
@@ -279,6 +414,22 @@ mod helpers {
        assert!(assist.is_none());
    }
+    pub(crate) fn check_assist_with_imports_locator_not_applicable<F: ImportsLocator>(
+        assist: fn(AssistCtx<TestDB>, &mut F) -> Option<Assist>,
+        imports_locator_provider: fn(db: Arc<TestDB>, file_id: FileId) -> F,
+        before: &str,
+    ) {
+        let (before_cursor_pos, before) = extract_offset(before);
+        let (db, file_id) = TestDB::with_single_file(&before);
+        let db = Arc::new(db);
+        let mut imports_locator = imports_locator_provider(Arc::clone(&db), file_id);
+        let frange =
+            FileRange { file_id, range: TextRange::offset_len(before_cursor_pos, 0.into()) };
+        let assist =
+            AssistCtx::with_ctx(db.as_ref(), frange, true, |ctx| assist(ctx, &mut imports_locator));
+        assert!(assist.is_none());
+    }
    pub(crate) fn check_assist_range_not_applicable(
        assist: fn(AssistCtx<TestDB>) -> Option<Assist>,
        before: &str,
diff --git a/crates/ra_cargo_watch/Cargo.toml b/crates/ra_cargo_watch/Cargo.toml
index 9ead48abf..dd814fc9d 100644
--- a/crates/ra_cargo_watch/Cargo.toml
+++ b/crates/ra_cargo_watch/Cargo.toml
@@ -6,12 +6,13 @@ authors = ["rust-analyzer developers"]
 [dependencies]
 crossbeam-channel = "0.4"
-lsp-types = { version = "0.69.0", features = ["proposed"] }
+lsp-types = { version = "0.70.0", features = ["proposed"] }
 log = "0.4.3"
 cargo_metadata = "0.9.1"
 jod-thread = "0.1.0"
 parking_lot = "0.10.0"
+serde_json = "1.0.45"
 [dev-dependencies]
-insta = "0.12.0"
+insta = "0.13.0"
 serde_json = "1.0"
 \ No newline at end of file
diff --git a/crates/ra_cargo_watch/src/conv.rs b/crates/ra_cargo_watch/src/conv.rs
index ac0f1d28a..8fba400ae 100644
--- a/crates/ra_cargo_watch/src/conv.rs
+++ b/crates/ra_cargo_watch/src/conv.rs
@@ -117,7 +117,7 @@ fn is_deprecated(rd: &RustDiagnostic) -> bool {
    }
 }
-#[derive(Debug)]
+#[derive(Clone, Debug)]
 pub struct SuggestedFix {
    pub title: String,
    pub location: Location,
diff --git a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_clippy_pass_by_ref.snap b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_clippy_pass_by_ref.snap
index cb0920914..cb0920914 100644
--- a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_clippy_pass_by_ref.snap
+++ b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_clippy_pass_by_ref.snap
diff --git a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_handles_macro_location.snap b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_handles_macro_location.snap
index 19510ecc1..19510ecc1 100644
--- a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_handles_macro_location.snap
+++ b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_handles_macro_location.snap
diff --git a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_macro_compiler_error.snap b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_macro_compiler_error.snap
index 92f7eec05..92f7eec05 100644
--- a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_macro_compiler_error.snap
+++ b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_macro_compiler_error.snap
diff --git a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_rustc_incompatible_type_for_trait.snap b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_rustc_incompatible_type_for_trait.snap
index cf683e4b6..cf683e4b6 100644
--- a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_rustc_incompatible_type_for_trait.snap
+++ b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_rustc_incompatible_type_for_trait.snap
diff --git a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_rustc_mismatched_type.snap b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_rustc_mismatched_type.snap
index 8c1483c74..8c1483c74 100644
--- a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_rustc_mismatched_type.snap
+++ b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_rustc_mismatched_type.snap
diff --git a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_rustc_unused_variable.snap b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_rustc_unused_variable.snap
index eb5a2247b..eb5a2247b 100644
--- a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_rustc_unused_variable.snap
+++ b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_rustc_unused_variable.snap
diff --git a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_rustc_wrong_number_of_parameters.snap b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_rustc_wrong_number_of_parameters.snap
index 2f4518931..2f4518931 100644
--- a/crates/ra_cargo_watch/src/conv/snapshots/test__snap_rustc_wrong_number_of_parameters.snap
+++ b/crates/ra_cargo_watch/src/conv/snapshots/ra_cargo_watch__conv__test__snap_rustc_wrong_number_of_parameters.snap
diff --git a/crates/ra_cargo_watch/src/lib.rs b/crates/ra_cargo_watch/src/lib.rs
index 7f4c9280c..ea7ddc86b 100644
--- a/crates/ra_cargo_watch/src/lib.rs
+++ b/crates/ra_cargo_watch/src/lib.rs
@@ -7,9 +7,9 @@ use lsp_types::{
    Diagnostic, Url, WorkDoneProgress, WorkDoneProgressBegin, WorkDoneProgressEnd,
    WorkDoneProgressReport,
 };
-use parking_lot::RwLock;
 use std::{
    collections::HashMap,
+    io::{BufRead, BufReader},
    path::PathBuf,
    process::{Command, Stdio},
    sync::Arc,
@@ -38,7 +38,7 @@ pub struct CheckOptions {
 #[derive(Debug)]
 pub struct CheckWatcher {
    pub task_recv: Receiver<CheckTask>,
-    pub state: Arc<RwLock<CheckState>>,
+    pub state: Arc<CheckState>,
    cmd_send: Option<Sender<CheckCommand>>,
    handle: Option<JoinHandle<()>>,
 }
@@ -46,7 +46,7 @@ pub struct CheckWatcher {
 impl CheckWatcher {
    pub fn new(options: &CheckOptions, workspace_root: PathBuf) -> CheckWatcher {
        let options = options.clone();
-        let state = Arc::new(RwLock::new(CheckState::new()));
+        let state = Arc::new(CheckState::new());
        let (task_send, task_recv) = unbounded::<CheckTask>();
        let (cmd_send, cmd_recv) = unbounded::<CheckCommand>();
@@ -59,7 +59,7 @@ impl CheckWatcher {
    /// Returns a CheckWatcher that doesn't actually do anything
    pub fn dummy() -> CheckWatcher {
-        let state = Arc::new(RwLock::new(CheckState::new()));
+        let state = Arc::new(CheckState::new());
        CheckWatcher { task_recv: never(), cmd_send: None, handle: None, state }
    }
@@ -87,7 +87,7 @@ impl std::ops::Drop for CheckWatcher {
    }
 }
-#[derive(Debug)]
+#[derive(Clone, Debug)]
 pub struct CheckState {
    diagnostic_collection: HashMap<Url, Vec<Diagnostic>>,
    suggested_fix_collection: HashMap<Url, Vec<SuggestedFix>>,
@@ -216,8 +216,10 @@ impl CheckWatcherThread {
                self.last_update_req.take();
                task_send.send(CheckTask::ClearDiagnostics).unwrap();
-                // By replacing the watcher, we drop the previous one which
+                // Replace with a dummy watcher first so we drop the original and wait for completion
-                // causes it to shut down automatically.
+                std::mem::replace(&mut self.watcher, WatchThread::dummy());
+                // Then create the actual new watcher
                self.watcher = WatchThread::new(&self.options, &self.workspace_root);
            }
        }
@@ -348,15 +350,45 @@ impl WatchThread {
            // which will break out of the loop, and continue the shutdown
            let _ = message_send.send(CheckEvent::Begin);
-            for message in cargo_metadata::parse_messages(command.stdout.take().unwrap()) {
+            // We manually read a line at a time, instead of using serde's
+            // stream deserializers, because the deserializer cannot recover
+            // from an error, resulting in it getting stuck, because we try to
+            // be resillient against failures.
+            //
+            // Because cargo only outputs one JSON object per line, we can
+            // simply skip a line if it doesn't parse, which just ignores any
+            // erroneus output.
+            let stdout = BufReader::new(command.stdout.take().unwrap());
+            for line in stdout.lines() {
+                let line = match line {
+                    Ok(line) => line,
+                    Err(err) => {
+                        log::error!("Couldn't read line from cargo: {}", err);
+                        continue;
+                    }
+                };
+                let message = serde_json::from_str::<cargo_metadata::Message>(&line);
                let message = match message {
                    Ok(message) => message,
                    Err(err) => {
-                        log::error!("Invalid json from cargo check, ignoring: {}", err);
+                        log::error!(
+                            "Invalid json from cargo check, ignoring ({}): {:?} ",
+                            err,
+                            line
+                        );
                        continue;
                    }
                };
+                // Skip certain kinds of messages to only spend time on what's useful
+                match &message {
+                    Message::CompilerArtifact(artifact) if artifact.fresh => continue,
+                    Message::BuildScriptExecuted(_) => continue,
+                    Message::Unknown => continue,
+                    _ => {}
+                }
                match message_send.send(CheckEvent::Msg(message)) {
                    Ok(()) => {}
                    Err(_err) => {
diff --git a/crates/ra_cli/Cargo.toml b/crates/ra_cli/Cargo.toml
index 12af075f7..bcd408421 100644
--- a/crates/ra_cli/Cargo.toml
+++ b/crates/ra_cli/Cargo.toml
@@ -7,7 +7,7 @@ publish = false
 [dependencies]
 pico-args = "0.3.0"
-env_logger = { version = "0.7.1", default-features = false, features = ["humantime"] }
+env_logger = { version = "0.7.1", default-features = false }
 ra_syntax = { path = "../ra_syntax" }
 ra_ide = { path = "../ra_ide" }
diff --git a/crates/ra_hir/src/db.rs b/crates/ra_hir/src/db.rs
index e6079b88d..a77bf6de6 100644
--- a/crates/ra_hir/src/db.rs
+++ b/crates/ra_hir/src/db.rs
@@ -1,20 +1,24 @@
 //! FIXME: write short doc here
 pub use hir_def::db::{
-    BodyQuery, BodyWithSourceMapQuery, ComputeCrateDefMapQuery, ConstDataQuery,
+    AttrsQuery, BodyQuery, BodyWithSourceMapQuery, ComputeCrateDefMapQuery, ConstDataQuery,
    CrateLangItemsQuery, DefDatabase, DefDatabaseStorage, DocumentationQuery, EnumDataQuery,
-    ExprScopesQuery, FunctionDataQuery, GenericParamsQuery, ImplDataQuery, InternDatabase,
+    ExprScopesQuery, FunctionDataQuery, GenericParamsQuery, ImplDataQuery, InternConstQuery,
-    InternDatabaseStorage, LangItemQuery, ModuleLangItemsQuery, RawItemsQuery, StaticDataQuery,
+    InternDatabase, InternDatabaseStorage, InternEnumQuery, InternFunctionQuery, InternImplQuery,
-    StructDataQuery, TraitDataQuery, TypeAliasDataQuery,
+    InternStaticQuery, InternStructQuery, InternTraitQuery, InternTypeAliasQuery, InternUnionQuery,
+    LangItemQuery, ModuleLangItemsQuery, RawItemsQuery, StaticDataQuery, StructDataQuery,
+    TraitDataQuery, TypeAliasDataQuery, UnionDataQuery,
 };
 pub use hir_expand::db::{
-    AstDatabase, AstDatabaseStorage, AstIdMapQuery, MacroArgQuery, MacroDefQuery, MacroExpandQuery,
+    AstDatabase, AstDatabaseStorage, AstIdMapQuery, InternMacroQuery, MacroArgQuery, MacroDefQuery,
-    ParseMacroQuery,
+    MacroExpandQuery, ParseMacroQuery,
 };
 pub use hir_ty::db::{
-    AssociatedTyDataQuery, CallableItemSignatureQuery, DoInferQuery, FieldTypesQuery,
+    AssociatedTyDataQuery, AssociatedTyValueQuery, CallableItemSignatureQuery, DoInferQuery,
-    GenericDefaultsQuery, GenericPredicatesQuery, HirDatabase, HirDatabaseStorage, ImplDatumQuery,
+    FieldTypesQuery, GenericDefaultsQuery, GenericPredicatesForParamQuery, GenericPredicatesQuery,
-    ImplsForTraitQuery, ImplsInCrateQuery, StructDatumQuery, TraitDatumQuery, TraitSolveQuery,
+    HirDatabase, HirDatabaseStorage, ImplDatumQuery, ImplSelfTyQuery, ImplTraitQuery,
+    ImplsForTraitQuery, ImplsInCrateQuery, InternAssocTyValueQuery, InternChalkImplQuery,
+    InternTypeCtorQuery, StructDatumQuery, TraitDatumQuery, TraitSolveQuery, TraitSolverQuery,
    TyQuery, ValueTyQuery,
 };
diff --git a/crates/ra_hir/src/lib.rs b/crates/ra_hir/src/lib.rs
index e1c7b7a20..9e2673d13 100644
--- a/crates/ra_hir/src/lib.rs
+++ b/crates/ra_hir/src/lib.rs
@@ -56,6 +56,7 @@ pub use hir_def::{
    nameres::ModuleSource,
    path::{ModPath, Path, PathKind},
    type_ref::Mutability,
+    ModuleDefId, // FIXME this is exposed and should be used for implementing the `TestImportsLocator` in `ra_assists` only, should be removed later along with the trait and the implementation.
 };
 pub use hir_expand::{
    name::Name, HirFileId, InFile, MacroCallId, MacroCallLoc, MacroDefId, MacroFile, Origin,
diff --git a/crates/ra_hir_def/Cargo.toml b/crates/ra_hir_def/Cargo.toml
index 2c368f690..1efa00fe0 100644
--- a/crates/ra_hir_def/Cargo.toml
+++ b/crates/ra_hir_def/Cargo.toml
@@ -26,4 +26,4 @@ ra_cfg = { path = "../ra_cfg" }
 tt = { path = "../ra_tt", package = "ra_tt" }
 [dev-dependencies]
-insta = "0.12.0"
+insta = "0.13.0"
diff --git a/crates/ra_hir_def/src/find_path.rs b/crates/ra_hir_def/src/find_path.rs
index 8cc2fb160..43b9b124a 100644
--- a/crates/ra_hir_def/src/find_path.rs
+++ b/crates/ra_hir_def/src/find_path.rs
@@ -7,10 +7,39 @@ use crate::{
    visibility::Visibility,
    CrateId, ModuleDefId, ModuleId,
 };
-use hir_expand::name::Name;
+use hir_expand::name::{known, Name};
+use test_utils::tested_by;
 const MAX_PATH_LEN: usize = 15;
+impl ModPath {
+    fn starts_with_std(&self) -> bool {
+        self.segments.first().filter(|&first_segment| first_segment == &known::std).is_some()
+    }
+    // When std library is present, paths starting with `std::`
+    // should be preferred over paths starting with `core::` and `alloc::`
+    fn should_start_with_std(&self) -> bool {
+        self.segments
+            .first()
+            .filter(|&first_segment| {
+                first_segment == &known::alloc || first_segment == &known::core
+            })
+            .is_some()
+    }
+    fn len(&self) -> usize {
+        self.segments.len()
+            + match self.kind {
+                PathKind::Plain => 0,
+                PathKind::Super(i) => i as usize,
+                PathKind::Crate => 1,
+                PathKind::Abs => 0,
+                PathKind::DollarCrate(_) => 1,
+            }
+    }
+}
 // FIXME: handle local items
 /// Find a path that can be used to refer to a certain item. This can depend on
@@ -112,23 +141,27 @@ fn find_path_inner(
            Some(path) => path,
        };
        path.segments.push(name);
-        if path_len(&path) < best_path_len {
-            best_path_len = path_len(&path);
+        let new_path =
-            best_path = Some(path);
+            if let Some(best_path) = best_path { select_best_path(best_path, path) } else { path };
-        }
+        best_path_len = new_path.len();
+        best_path = Some(new_path);
    }
    best_path
 }
-fn path_len(path: &ModPath) -> usize {
+fn select_best_path(old_path: ModPath, new_path: ModPath) -> ModPath {
-    path.segments.len()
+    if old_path.starts_with_std() && new_path.should_start_with_std() {
-        + match path.kind {
+        tested_by!(prefer_std_paths);
-            PathKind::Plain => 0,
+        old_path
-            PathKind::Super(i) => i as usize,
+    } else if new_path.starts_with_std() && old_path.should_start_with_std() {
-            PathKind::Crate => 1,
+        tested_by!(prefer_std_paths);
-            PathKind::Abs => 0,
+        new_path
-            PathKind::DollarCrate(_) => 1,
+    } else if new_path.len() < old_path.len() {
-        }
+        new_path
+    } else {
+        old_path
+    }
 }
 fn find_importable_locations(
@@ -201,6 +234,7 @@ mod tests {
    use hir_expand::hygiene::Hygiene;
    use ra_db::fixture::WithFixture;
    use ra_syntax::ast::AstNode;
+    use test_utils::covers;
    /// `code` needs to contain a cursor marker; checks that `find_path` for the
    /// item the `path` refers to returns that same path when called from the
@@ -452,4 +486,41 @@ mod tests {
        "#;
        check_found_path(code, "crate::foo::S");
    }
+    #[test]
+    fn prefer_std_paths_over_alloc() {
+        covers!(prefer_std_paths);
+        let code = r#"
+        //- /main.rs crate:main deps:alloc,std
+        <|>
+        //- /std.rs crate:std deps:alloc
+        pub mod sync {
+            pub use alloc::sync::Arc;
+        }
+        //- /zzz.rs crate:alloc
+        pub mod sync {
+            pub struct Arc;
+        }
+        "#;
+        check_found_path(code, "std::sync::Arc");
+    }
+    #[test]
+    fn prefer_shorter_paths_if_not_alloc() {
+        let code = r#"
+        //- /main.rs crate:main deps:megaalloc,std
+        <|>
+        //- /std.rs crate:std deps:megaalloc
+        pub mod sync {
+            pub use megaalloc::sync::Arc;
+        }
+        //- /zzz.rs crate:megaalloc
+        pub struct Arc;
+        "#;
+        check_found_path(code, "megaalloc::Arc");
+    }
 }
diff --git a/crates/ra_hir_def/src/marks.rs b/crates/ra_hir_def/src/marks.rs
index 457ba4abe..daa49d5f1 100644
--- a/crates/ra_hir_def/src/marks.rs
+++ b/crates/ra_hir_def/src/marks.rs
@@ -13,4 +13,5 @@ test_utils::marks!(
    macro_dollar_crate_self
    macro_dollar_crate_other
    infer_resolve_while_let
+    prefer_std_paths
 );
diff --git a/crates/ra_hir_def/src/nameres.rs b/crates/ra_hir_def/src/nameres.rs
index 27c12e46c..852304dd0 100644
--- a/crates/ra_hir_def/src/nameres.rs
+++ b/crates/ra_hir_def/src/nameres.rs
@@ -229,6 +229,46 @@ impl CrateDefMap {
            self.resolve_path_fp_with_macro(db, ResolveMode::Other, original_module, path, shadow);
        (res.resolved_def, res.segment_index)
    }
+    // FIXME: this can use some more human-readable format (ideally, an IR
+    // even), as this should be a great debugging aid.
+    pub fn dump(&self) -> String {
+        let mut buf = String::new();
+        go(&mut buf, self, "\ncrate", self.root);
+        return buf.trim().to_string();
+        fn go(buf: &mut String, map: &CrateDefMap, path: &str, module: LocalModuleId) {
+            *buf += path;
+            *buf += "\n";
+            let mut entries: Vec<_> = map.modules[module].scope.resolutions().collect();
+            entries.sort_by_key(|(name, _)| name.clone());
+            for (name, def) in entries {
+                *buf += &format!("{}:", name);
+                if def.types.is_some() {
+                    *buf += " t";
+                }
+                if def.values.is_some() {
+                    *buf += " v";
+                }
+                if def.macros.is_some() {
+                    *buf += " m";
+                }
+                if def.is_none() {
+                    *buf += " _";
+                }
+                *buf += "\n";
+            }
+            for (name, child) in map.modules[module].children.iter() {
+                let path = path.to_string() + &format!("::{}", name);
+                go(buf, map, &path, *child);
+            }
+        }
+    }
 }
 impl ModuleData {
diff --git a/crates/ra_hir_def/src/nameres/tests.rs b/crates/ra_hir_def/src/nameres/tests.rs
index 78bcdc850..82f0f835c 100644
--- a/crates/ra_hir_def/src/nameres/tests.rs
+++ b/crates/ra_hir_def/src/nameres/tests.rs
@@ -10,11 +10,10 @@ use insta::assert_snapshot;
 use ra_db::{fixture::WithFixture, SourceDatabase};
 use test_utils::covers;
-use crate::{db::DefDatabase, nameres::*, test_db::TestDB, LocalModuleId};
+use crate::{db::DefDatabase, nameres::*, test_db::TestDB};
 fn def_map(fixture: &str) -> String {
-    let dm = compute_crate_def_map(fixture);
+    compute_crate_def_map(fixture).dump()
-    render_crate_def_map(&dm)
 }
 fn compute_crate_def_map(fixture: &str) -> Arc<CrateDefMap> {
@@ -23,44 +22,6 @@ fn compute_crate_def_map(fixture: &str) -> Arc<CrateDefMap> {
    db.crate_def_map(krate)
 }
-fn render_crate_def_map(map: &CrateDefMap) -> String {
-    let mut buf = String::new();
-    go(&mut buf, map, "\ncrate", map.root);
-    return buf.trim().to_string();
-    fn go(buf: &mut String, map: &CrateDefMap, path: &str, module: LocalModuleId) {
-        *buf += path;
-        *buf += "\n";
-        let mut entries: Vec<_> = map.modules[module].scope.resolutions().collect();
-        entries.sort_by_key(|(name, _)| name.clone());
-        for (name, def) in entries {
-            *buf += &format!("{}:", name);
-            if def.types.is_some() {
-                *buf += " t";
-            }
-            if def.values.is_some() {
-                *buf += " v";
-            }
-            if def.macros.is_some() {
-                *buf += " m";
-            }
-            if def.is_none() {
-                *buf += " _";
-            }
-            *buf += "\n";
-        }
-        for (name, child) in map.modules[module].children.iter() {
-            let path = path.to_string() + &format!("::{}", name);
-            go(buf, map, &path, *child);
-        }
-    }
-}
 #[test]
 fn crate_def_map_smoke_test() {
    let map = def_map(
diff --git a/crates/ra_hir_expand/src/name.rs b/crates/ra_hir_expand/src/name.rs
index b3fa1efba..b2e10f445 100644
--- a/crates/ra_hir_expand/src/name.rs
+++ b/crates/ra_hir_expand/src/name.rs
@@ -141,6 +141,8 @@ pub mod known {
        macro_rules,
        // Components of known path (value or mod name)
        std,
+        core,
+        alloc,
        iter,
        ops,
        future,
diff --git a/crates/ra_hir_ty/Cargo.toml b/crates/ra_hir_ty/Cargo.toml
index 60793db44..f5484bf70 100644
--- a/crates/ra_hir_ty/Cargo.toml
+++ b/crates/ra_hir_ty/Cargo.toml
@@ -21,11 +21,11 @@ ra_prof = { path = "../ra_prof" }
 ra_syntax = { path = "../ra_syntax" }
 test_utils = { path = "../test_utils" }
-chalk-solve =   { git = "https://github.com/rust-lang/chalk.git", rev = "ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5" }
+chalk-solve =   { git = "https://github.com/rust-lang/chalk.git", rev = "af48f302a1f571b3ca418f7c5aa639a144a34f75" }
-chalk-rust-ir = { git = "https://github.com/rust-lang/chalk.git", rev = "ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5" }
+chalk-rust-ir = { git = "https://github.com/rust-lang/chalk.git", rev = "af48f302a1f571b3ca418f7c5aa639a144a34f75" }
-chalk-ir =      { git = "https://github.com/rust-lang/chalk.git", rev = "ff65b5ac9860f3c36bd892c865ab23d5ff0bbae5" }
+chalk-ir =      { git = "https://github.com/rust-lang/chalk.git", rev = "af48f302a1f571b3ca418f7c5aa639a144a34f75" }
 lalrpop-intern = "0.15.1"
 [dev-dependencies]
-insta = "0.12.0"
+insta = "0.13.0"
diff --git a/crates/ra_hir_ty/src/lib.rs b/crates/ra_hir_ty/src/lib.rs
index 908e4862d..08d501ccd 100644
--- a/crates/ra_hir_ty/src/lib.rs
+++ b/crates/ra_hir_ty/src/lib.rs
@@ -847,7 +847,7 @@ impl HirDisplay for ApplicationTy {
            }
            TypeCtor::Array => {
                let t = self.parameters.as_single();
-                write!(f, "[{};_]", t.display(f.db))?;
+                write!(f, "[{}; _]", t.display(f.db))?;
            }
            TypeCtor::RawPtr(m) => {
                let t = self.parameters.as_single();
diff --git a/crates/ra_hir_ty/src/tests/coercion.rs b/crates/ra_hir_ty/src/tests/coercion.rs
index 7e99a42ed..76a1b46c0 100644
--- a/crates/ra_hir_ty/src/tests/coercion.rs
+++ b/crates/ra_hir_ty/src/tests/coercion.rs
@@ -71,42 +71,42 @@ fn test2() {
    [82; 93) '{ loop {} }': T
    [84; 91) 'loop {}': !
    [89; 91) '{}': ()
-    [122; 133) '{ loop {} }': *mut [T;_]
+    [122; 133) '{ loop {} }': *mut [T; _]
    [124; 131) 'loop {}': !
    [129; 131) '{}': ()
    [160; 173) '{     gen() }': *mut [U]
-    [166; 169) 'gen': fn gen<U>() -> *mut [T;_]
+    [166; 169) 'gen': fn gen<U>() -> *mut [T; _]
-    [166; 171) 'gen()': *mut [U;_]
+    [166; 171) 'gen()': *mut [U; _]
    [186; 420) '{     ...rr); }': ()
-    [196; 199) 'arr': &[u8;_]
+    [196; 199) 'arr': &[u8; _]
-    [212; 216) '&[1]': &[u8;_]
+    [212; 216) '&[1]': &[u8; _]
-    [213; 216) '[1]': [u8;_]
+    [213; 216) '[1]': [u8; _]
    [214; 215) '1': u8
    [227; 228) 'a': &[u8]
-    [237; 240) 'arr': &[u8;_]
+    [237; 240) 'arr': &[u8; _]
    [250; 251) 'b': u8
    [254; 255) 'f': fn f<u8>(&[T]) -> T
    [254; 260) 'f(arr)': u8
-    [256; 259) 'arr': &[u8;_]
+    [256; 259) 'arr': &[u8; _]
    [270; 271) 'c': &[u8]
    [280; 287) '{ arr }': &[u8]
-    [282; 285) 'arr': &[u8;_]
+    [282; 285) 'arr': &[u8; _]
    [297; 298) 'd': u8
    [301; 302) 'g': fn g<u8>(S<&[T]>) -> T
    [301; 316) 'g(S { a: arr })': u8
    [303; 315) 'S { a: arr }': S<&[u8]>
-    [310; 313) 'arr': &[u8;_]
+    [310; 313) 'arr': &[u8; _]
-    [326; 327) 'e': [&[u8];_]
+    [326; 327) 'e': [&[u8]; _]
-    [341; 346) '[arr]': [&[u8];_]
+    [341; 346) '[arr]': [&[u8]; _]
-    [342; 345) 'arr': &[u8;_]
+    [342; 345) 'arr': &[u8; _]
-    [356; 357) 'f': [&[u8];_]
+    [356; 357) 'f': [&[u8]; _]
-    [371; 379) '[arr; 2]': [&[u8];_]
+    [371; 379) '[arr; 2]': [&[u8]; _]
-    [372; 375) 'arr': &[u8;_]
+    [372; 375) 'arr': &[u8; _]
    [377; 378) '2': usize
    [389; 390) 'g': (&[u8], &[u8])
    [407; 417) '(arr, arr)': (&[u8], &[u8])
-    [408; 411) 'arr': &[u8;_]
+    [408; 411) 'arr': &[u8; _]
-    [413; 416) 'arr': &[u8;_]
+    [413; 416) 'arr': &[u8; _]
    "###
    );
 }
@@ -122,8 +122,8 @@ fn test() {
        @r###"
    [11; 40) '{     ...[1]; }': ()
    [21; 22) 'x': &[i32]
-    [33; 37) '&[1]': &[i32;_]
+    [33; 37) '&[1]': &[i32; _]
-    [34; 37) '[1]': [i32;_]
+    [34; 37) '[1]': [i32; _]
    [35; 36) '1': i32
    "###);
 }
@@ -159,22 +159,22 @@ fn test(a: A<[u8; 2]>, b: B<[u8; 2]>, c: C<[u8; 2]>) {
    [334; 335) 'x': C<[T]>
    [355; 360) '{ x }': C<[T]>
    [357; 358) 'x': C<[T]>
-    [370; 371) 'a': A<[u8;_]>
+    [370; 371) 'a': A<[u8; _]>
-    [385; 386) 'b': B<[u8;_]>
+    [385; 386) 'b': B<[u8; _]>
-    [400; 401) 'c': C<[u8;_]>
+    [400; 401) 'c': C<[u8; _]>
    [415; 481) '{     ...(c); }': ()
    [425; 426) 'd': A<[{unknown}]>
    [429; 433) 'foo1': fn foo1<{unknown}>(A<[T]>) -> A<[T]>
    [429; 436) 'foo1(a)': A<[{unknown}]>
-    [434; 435) 'a': A<[u8;_]>
+    [434; 435) 'a': A<[u8; _]>
    [446; 447) 'e': B<[u8]>
    [450; 454) 'foo2': fn foo2<u8>(B<[T]>) -> B<[T]>
    [450; 457) 'foo2(b)': B<[u8]>
-    [455; 456) 'b': B<[u8;_]>
+    [455; 456) 'b': B<[u8; _]>
    [467; 468) 'f': C<[u8]>
    [471; 475) 'foo3': fn foo3<u8>(C<[T]>) -> C<[T]>
    [471; 478) 'foo3(c)': C<[u8]>
-    [476; 477) 'c': C<[u8;_]>
+    [476; 477) 'c': C<[u8; _]>
    "###
    );
 }
@@ -204,12 +204,12 @@ fn test() {
    [72; 97) '{     ...     }': &[i32]
    [82; 85) 'foo': fn foo<i32>(&[T]) -> &[T]
    [82; 91) 'foo(&[1])': &[i32]
-    [86; 90) '&[1]': &[i32;_]
+    [86; 90) '&[1]': &[i32; _]
-    [87; 90) '[1]': [i32;_]
+    [87; 90) '[1]': [i32; _]
    [88; 89) '1': i32
-    [103; 123) '{     ...     }': &[i32;_]
+    [103; 123) '{     ...     }': &[i32; _]
-    [113; 117) '&[1]': &[i32;_]
+    [113; 117) '&[1]': &[i32; _]
-    [114; 117) '[1]': [i32;_]
+    [114; 117) '[1]': [i32; _]
    [115; 116) '1': i32
    "###
    );
@@ -237,15 +237,15 @@ fn test() {
    [60; 61) 'x': &[i32]
    [64; 123) 'if tru...     }': &[i32]
    [67; 71) 'true': bool
-    [72; 92) '{     ...     }': &[i32;_]
+    [72; 92) '{     ...     }': &[i32; _]
-    [82; 86) '&[1]': &[i32;_]
+    [82; 86) '&[1]': &[i32; _]
-    [83; 86) '[1]': [i32;_]
+    [83; 86) '[1]': [i32; _]
    [84; 85) '1': i32
    [98; 123) '{     ...     }': &[i32]
    [108; 111) 'foo': fn foo<i32>(&[T]) -> &[T]
    [108; 117) 'foo(&[1])': &[i32]
-    [112; 116) '&[1]': &[i32;_]
+    [112; 116) '&[1]': &[i32; _]
-    [113; 116) '[1]': [i32;_]
+    [113; 116) '[1]': [i32; _]
    [114; 115) '1': i32
    "###
    );
@@ -277,16 +277,16 @@ fn test(i: i32) {
    [88; 89) '2': i32
    [93; 96) 'foo': fn foo<i32>(&[T]) -> &[T]
    [93; 102) 'foo(&[2])': &[i32]
-    [97; 101) '&[2]': &[i32;_]
+    [97; 101) '&[2]': &[i32; _]
-    [98; 101) '[2]': [i32;_]
+    [98; 101) '[2]': [i32; _]
    [99; 100) '2': i32
    [112; 113) '1': i32
-    [117; 121) '&[1]': &[i32;_]
+    [117; 121) '&[1]': &[i32; _]
-    [118; 121) '[1]': [i32;_]
+    [118; 121) '[1]': [i32; _]
    [119; 120) '1': i32
    [131; 132) '_': i32
-    [136; 140) '&[3]': &[i32;_]
+    [136; 140) '&[3]': &[i32; _]
-    [137; 140) '[3]': [i32;_]
+    [137; 140) '[3]': [i32; _]
    [138; 139) '3': i32
    "###
    );
@@ -316,18 +316,18 @@ fn test(i: i32) {
    [70; 147) 'match ...     }': &[i32]
    [76; 77) 'i': i32
    [88; 89) '1': i32
-    [93; 97) '&[1]': &[i32;_]
+    [93; 97) '&[1]': &[i32; _]
-    [94; 97) '[1]': [i32;_]
+    [94; 97) '[1]': [i32; _]
    [95; 96) '1': i32
    [107; 108) '2': i32
    [112; 115) 'foo': fn foo<i32>(&[T]) -> &[T]
    [112; 121) 'foo(&[2])': &[i32]
-    [116; 120) '&[2]': &[i32;_]
+    [116; 120) '&[2]': &[i32; _]
-    [117; 120) '[2]': [i32;_]
+    [117; 120) '[2]': [i32; _]
    [118; 119) '2': i32
    [131; 132) '_': i32
-    [136; 140) '&[3]': &[i32;_]
+    [136; 140) '&[3]': &[i32; _]
-    [137; 140) '[3]': [i32;_]
+    [137; 140) '[3]': [i32; _]
    [138; 139) '3': i32
    "###
    );
diff --git a/crates/ra_hir_ty/src/tests/regression.rs b/crates/ra_hir_ty/src/tests/regression.rs
index aa948dcbf..02bab6dbe 100644
--- a/crates/ra_hir_ty/src/tests/regression.rs
+++ b/crates/ra_hir_ty/src/tests/regression.rs
@@ -102,7 +102,7 @@ fn test() {
    [11; 48) '{     ...&y]; }': ()
    [21; 22) 'y': &{unknown}
    [25; 32) 'unknown': &{unknown}
-    [38; 45) '[y, &y]': [&&{unknown};_]
+    [38; 45) '[y, &y]': [&&{unknown}; _]
    [39; 40) 'y': &{unknown}
    [42; 44) '&y': &&{unknown}
    [43; 44) 'y': &{unknown}
@@ -128,7 +128,7 @@ fn test() {
    [25; 32) 'unknown': &&{unknown}
    [42; 43) 'y': &&{unknown}
    [46; 53) 'unknown': &&{unknown}
-    [59; 77) '[(x, y..., &x)]': [(&&&{unknown}, &&&{unknown});_]
+    [59; 77) '[(x, y..., &x)]': [(&&&{unknown}, &&&{unknown}); _]
    [60; 66) '(x, y)': (&&&{unknown}, &&&{unknown})
    [61; 62) 'x': &&{unknown}
    [64; 65) 'y': &&{unknown}
@@ -180,8 +180,8 @@ fn test_line_buffer() {
 "#),
        @r###"
    [23; 53) '{     ...n']; }': ()
-    [29; 50) '&[0, b...b'\n']': &[u8;_]
+    [29; 50) '&[0, b...b'\n']': &[u8; _]
-    [30; 50) '[0, b'...b'\n']': [u8;_]
+    [30; 50) '[0, b'...b'\n']': [u8; _]
    [31; 32) '0': u8
    [34; 39) 'b'\n'': u8
    [41; 42) '1': u8
diff --git a/crates/ra_hir_ty/src/tests/simple.rs b/crates/ra_hir_ty/src/tests/simple.rs
index b7204ec00..fdab9c187 100644
--- a/crates/ra_hir_ty/src/tests/simple.rs
+++ b/crates/ra_hir_ty/src/tests/simple.rs
@@ -28,7 +28,7 @@ mod boxed {
 "#,
    );
-    assert_eq!("(Box<i32>, Box<Box<i32>>, Box<&i32>, Box<[i32;_]>)", type_at_pos(&db, pos));
+    assert_eq!("(Box<i32>, Box<Box<i32>>, Box<&i32>, Box<[i32; _]>)", type_at_pos(&db, pos));
 }
 #[test]
@@ -1061,55 +1061,55 @@ fn test(x: &str, y: isize) {
    [9; 10) 'x': &str
    [18; 19) 'y': isize
    [28; 293) '{     ... []; }': ()
-    [38; 39) 'a': [&str;_]
+    [38; 39) 'a': [&str; _]
-    [42; 45) '[x]': [&str;_]
+    [42; 45) '[x]': [&str; _]
    [43; 44) 'x': &str
-    [55; 56) 'b': [[&str;_];_]
+    [55; 56) 'b': [[&str; _]; _]
-    [59; 65) '[a, a]': [[&str;_];_]
+    [59; 65) '[a, a]': [[&str; _]; _]
-    [60; 61) 'a': [&str;_]
+    [60; 61) 'a': [&str; _]
-    [63; 64) 'a': [&str;_]
+    [63; 64) 'a': [&str; _]
-    [75; 76) 'c': [[[&str;_];_];_]
+    [75; 76) 'c': [[[&str; _]; _]; _]
-    [79; 85) '[b, b]': [[[&str;_];_];_]
+    [79; 85) '[b, b]': [[[&str; _]; _]; _]
-    [80; 81) 'b': [[&str;_];_]
+    [80; 81) 'b': [[&str; _]; _]
-    [83; 84) 'b': [[&str;_];_]
+    [83; 84) 'b': [[&str; _]; _]
-    [96; 97) 'd': [isize;_]
+    [96; 97) 'd': [isize; _]
-    [100; 112) '[y, 1, 2, 3]': [isize;_]
+    [100; 112) '[y, 1, 2, 3]': [isize; _]
    [101; 102) 'y': isize
    [104; 105) '1': isize
    [107; 108) '2': isize
    [110; 111) '3': isize
-    [122; 123) 'd': [isize;_]
+    [122; 123) 'd': [isize; _]
-    [126; 138) '[1, y, 2, 3]': [isize;_]
+    [126; 138) '[1, y, 2, 3]': [isize; _]
    [127; 128) '1': isize
    [130; 131) 'y': isize
    [133; 134) '2': isize
    [136; 137) '3': isize
-    [148; 149) 'e': [isize;_]
+    [148; 149) 'e': [isize; _]
-    [152; 155) '[y]': [isize;_]
+    [152; 155) '[y]': [isize; _]
    [153; 154) 'y': isize
-    [165; 166) 'f': [[isize;_];_]
+    [165; 166) 'f': [[isize; _]; _]
-    [169; 175) '[d, d]': [[isize;_];_]
+    [169; 175) '[d, d]': [[isize; _]; _]
-    [170; 171) 'd': [isize;_]
+    [170; 171) 'd': [isize; _]
-    [173; 174) 'd': [isize;_]
+    [173; 174) 'd': [isize; _]
-    [185; 186) 'g': [[isize;_];_]
+    [185; 186) 'g': [[isize; _]; _]
-    [189; 195) '[e, e]': [[isize;_];_]
+    [189; 195) '[e, e]': [[isize; _]; _]
-    [190; 191) 'e': [isize;_]
+    [190; 191) 'e': [isize; _]
-    [193; 194) 'e': [isize;_]
+    [193; 194) 'e': [isize; _]
-    [206; 207) 'h': [i32;_]
+    [206; 207) 'h': [i32; _]
-    [210; 216) '[1, 2]': [i32;_]
+    [210; 216) '[1, 2]': [i32; _]
    [211; 212) '1': i32
    [214; 215) '2': i32
-    [226; 227) 'i': [&str;_]
+    [226; 227) 'i': [&str; _]
-    [230; 240) '["a", "b"]': [&str;_]
+    [230; 240) '["a", "b"]': [&str; _]
    [231; 234) '"a"': &str
    [236; 239) '"b"': &str
-    [251; 252) 'b': [[&str;_];_]
+    [251; 252) 'b': [[&str; _]; _]
-    [255; 265) '[a, ["b"]]': [[&str;_];_]
+    [255; 265) '[a, ["b"]]': [[&str; _]; _]
-    [256; 257) 'a': [&str;_]
+    [256; 257) 'a': [&str; _]
-    [259; 264) '["b"]': [&str;_]
+    [259; 264) '["b"]': [&str; _]
    [260; 263) '"b"': &str
-    [275; 276) 'x': [u8;_]
+    [275; 276) 'x': [u8; _]
-    [288; 290) '[]': [u8;_]
+    [288; 290) '[]': [u8; _]
    "###
    );
 }
diff --git a/crates/ra_hir_ty/src/tests/traits.rs b/crates/ra_hir_ty/src/tests/traits.rs
index 4b268510c..a6ac18f86 100644
--- a/crates/ra_hir_ty/src/tests/traits.rs
+++ b/crates/ra_hir_ty/src/tests/traits.rs
@@ -479,7 +479,7 @@ fn indexing_arrays() {
        @r###"
    [10; 26) '{ &mut...[2]; }': ()
    [12; 23) '&mut [9][2]': &mut {unknown}
-    [17; 20) '[9]': [i32;_]
+    [17; 20) '[9]': [i32; _]
    [17; 23) '[9][2]': {unknown}
    [18; 19) '9': i32
    [21; 22) '2': i32
@@ -850,6 +850,7 @@ fn test<T: ApplyL>(t: T) {
 }
 #[test]
+#[ignore]
 fn impl_trait() {
    assert_snapshot!(
        infer(r#"
@@ -1021,6 +1022,7 @@ fn test() {
 }
 #[test]
+#[ignore]
 fn error_bound_chalk() {
    let t = type_at(
        r#"
diff --git a/crates/ra_hir_ty/src/traits.rs b/crates/ra_hir_ty/src/traits.rs
index 4aabd66dc..88af61e87 100644
--- a/crates/ra_hir_ty/src/traits.rs
+++ b/crates/ra_hir_ty/src/traits.rs
@@ -50,10 +50,19 @@ impl TraitSolver {
            Err(_) => ra_db::Canceled::throw(),
        };
+        let fuel = std::cell::Cell::new(CHALK_SOLVER_FUEL);
        let solution = panic::catch_unwind({
            let solver = panic::AssertUnwindSafe(&mut solver);
            let context = panic::AssertUnwindSafe(&context);
-            move || solver.0.solve(context.0, goal)
+            move || {
+                solver.0.solve_limited(context.0, goal, || {
+                    context.0.db.check_canceled();
+                    let remaining = fuel.get();
+                    fuel.set(remaining - 1);
+                    remaining > 0
+                })
+            }
        });
        let solution = match solution {
@@ -78,7 +87,9 @@ impl TraitSolver {
 /// This controls the maximum size of types Chalk considers. If we set this too
 /// high, we can run into slow edge cases; if we set it too low, Chalk won't
 /// find some solutions.
-const CHALK_SOLVER_MAX_SIZE: usize = 4;
+const CHALK_SOLVER_MAX_SIZE: usize = 10;
+/// This controls how much 'time' we give the Chalk solver before giving up.
+const CHALK_SOLVER_FUEL: i32 = 100;
 #[derive(Debug, Copy, Clone)]
 struct ChalkContext<'a, DB> {
@@ -97,7 +108,8 @@ pub(crate) fn trait_solver_query(
 }
 fn create_chalk_solver() -> chalk_solve::Solver<TypeFamily> {
-    let solver_choice = chalk_solve::SolverChoice::SLG { max_size: CHALK_SOLVER_MAX_SIZE };
+    let solver_choice =
+        chalk_solve::SolverChoice::SLG { max_size: CHALK_SOLVER_MAX_SIZE, expected_answers: None };
    solver_choice.into_solver()
 }
@@ -232,7 +244,6 @@ fn solution_from_chalk(
    let convert_subst = |subst: chalk_ir::Canonical<chalk_ir::Substitution<TypeFamily>>| {
        let value = subst
            .value
-            .parameters
            .into_iter()
            .map(|p| {
                let ty = match p.ty() {
diff --git a/crates/ra_hir_ty/src/traits/chalk.rs b/crates/ra_hir_ty/src/traits/chalk.rs
index 555930c9b..fe9cb556c 100644
--- a/crates/ra_hir_ty/src/traits/chalk.rs
+++ b/crates/ra_hir_ty/src/traits/chalk.rs
@@ -3,7 +3,7 @@ use std::{fmt, sync::Arc};
 use log::debug;
-use chalk_ir::{cast::Cast, Parameter, PlaceholderIndex, TypeName, UniverseIndex};
+use chalk_ir::{cast::Cast, GoalData, Parameter, PlaceholderIndex, TypeName, UniverseIndex};
 use hir_def::{AssocContainerId, AssocItemId, GenericDefId, HasModule, Lookup, TypeAliasId};
 use ra_db::{
@@ -24,6 +24,8 @@ impl chalk_ir::family::TypeFamily for TypeFamily {
    type InternedType = Box<chalk_ir::TyData<Self>>;
    type InternedLifetime = chalk_ir::LifetimeData<Self>;
    type InternedParameter = chalk_ir::ParameterData<Self>;
+    type InternedGoal = Arc<GoalData<Self>>;
+    type InternedSubstitution = Vec<Parameter<Self>>;
    type DefId = InternId;
    // FIXME: implement these
@@ -48,8 +50,8 @@ impl chalk_ir::family::TypeFamily for TypeFamily {
        None
    }
-    fn debug_projection(
+    fn debug_alias(
-        _projection: &chalk_ir::ProjectionTy<Self>,
+        _projection: &chalk_ir::AliasTy<Self>,
        _fmt: &mut fmt::Formatter<'_>,
    ) -> Option<fmt::Result> {
        None
@@ -78,6 +80,24 @@ impl chalk_ir::family::TypeFamily for TypeFamily {
    fn parameter_data(parameter: &chalk_ir::ParameterData<Self>) -> &chalk_ir::ParameterData<Self> {
        parameter
    }
+    fn intern_goal(goal: GoalData<Self>) -> Arc<GoalData<Self>> {
+        Arc::new(goal)
+    }
+    fn goal_data(goal: &Arc<GoalData<Self>>) -> &GoalData<Self> {
+        goal
+    }
+    fn intern_substitution<E>(
+        data: impl IntoIterator<Item = Result<Parameter<Self>, E>>,
+    ) -> Result<Vec<Parameter<Self>>, E> {
+        data.into_iter().collect()
+    }
+    fn substitution_data(substitution: &Vec<Parameter<Self>>) -> &[Parameter<Self>] {
+        substitution
+    }
 }
 impl chalk_ir::family::HasTypeFamily for TypeFamily {
@@ -114,13 +134,13 @@ impl ToChalk for Ty {
        match self {
            Ty::Apply(apply_ty) => {
                let name = apply_ty.ctor.to_chalk(db);
-                let parameters = apply_ty.parameters.to_chalk(db);
+                let substitution = apply_ty.parameters.to_chalk(db);
-                chalk_ir::ApplicationTy { name, parameters }.cast().intern()
+                chalk_ir::ApplicationTy { name, substitution }.cast().intern()
            }
            Ty::Projection(proj_ty) => {
                let associated_ty_id = proj_ty.associated_ty.to_chalk(db);
-                let parameters = proj_ty.parameters.to_chalk(db);
+                let substitution = proj_ty.parameters.to_chalk(db);
-                chalk_ir::ProjectionTy { associated_ty_id, parameters }.cast().intern()
+                chalk_ir::AliasTy { associated_ty_id, substitution }.cast().intern()
            }
            Ty::Param { idx, .. } => {
                PlaceholderIndex { ui: UniverseIndex::ROOT, idx: idx as usize }
@@ -135,23 +155,13 @@ impl ToChalk for Ty {
                    .cloned()
                    .map(|p| p.to_chalk(db))
                    .collect();
-                let bounded_ty = chalk_ir::BoundedTy { bounds: make_binders(where_clauses, 1) };
+                let bounded_ty = chalk_ir::DynTy { bounds: make_binders(where_clauses, 1) };
                chalk_ir::TyData::Dyn(bounded_ty).intern()
            }
-            Ty::Opaque(predicates) => {
+            Ty::Opaque(_) | Ty::Unknown => {
-                let where_clauses = predicates
+                let substitution = chalk_ir::Substitution::empty();
-                    .iter()
-                    .filter(|p| !p.is_error())
-                    .cloned()
-                    .map(|p| p.to_chalk(db))
-                    .collect();
-                let bounded_ty = chalk_ir::BoundedTy { bounds: make_binders(where_clauses, 1) };
-                chalk_ir::TyData::Opaque(bounded_ty).intern()
-            }
-            Ty::Unknown => {
-                let parameters = Vec::new();
                let name = TypeName::Error;
-                chalk_ir::ApplicationTy { name, parameters }.cast().intern()
+                chalk_ir::ApplicationTy { name, substitution }.cast().intern()
            }
        }
    }
@@ -161,7 +171,7 @@ impl ToChalk for Ty {
                TypeName::Error => Ty::Unknown,
                _ => {
                    let ctor = from_chalk(db, apply_ty.name);
-                    let parameters = from_chalk(db, apply_ty.parameters);
+                    let parameters = from_chalk(db, apply_ty.substitution);
                    Ty::Apply(ApplicationTy { ctor, parameters })
                }
            },
@@ -169,12 +179,12 @@ impl ToChalk for Ty {
                assert_eq!(idx.ui, UniverseIndex::ROOT);
                Ty::Param { idx: idx.idx as u32, name: crate::Name::missing() }
            }
-            chalk_ir::TyData::Projection(proj) => {
+            chalk_ir::TyData::Alias(proj) => {
                let associated_ty = from_chalk(db, proj.associated_ty_id);
-                let parameters = from_chalk(db, proj.parameters);
+                let parameters = from_chalk(db, proj.substitution);
                Ty::Projection(ProjectionTy { associated_ty, parameters })
            }
-            chalk_ir::TyData::ForAll(_) => unimplemented!(),
+            chalk_ir::TyData::Function(_) => unimplemented!(),
            chalk_ir::TyData::BoundVar(idx) => Ty::Bound(idx as u32),
            chalk_ir::TyData::InferenceVar(_iv) => Ty::Unknown,
            chalk_ir::TyData::Dyn(where_clauses) => {
@@ -183,27 +193,18 @@ impl ToChalk for Ty {
                    where_clauses.bounds.value.into_iter().map(|c| from_chalk(db, c)).collect();
                Ty::Dyn(predicates)
            }
-            chalk_ir::TyData::Opaque(where_clauses) => {
-                assert_eq!(where_clauses.bounds.binders.len(), 1);
-                let predicates =
-                    where_clauses.bounds.value.into_iter().map(|c| from_chalk(db, c)).collect();
-                Ty::Opaque(predicates)
-            }
        }
    }
 }
 impl ToChalk for Substs {
-    type Chalk = Vec<chalk_ir::Parameter<TypeFamily>>;
+    type Chalk = chalk_ir::Substitution<TypeFamily>;
-    fn to_chalk(self, db: &impl HirDatabase) -> Vec<Parameter<TypeFamily>> {
+    fn to_chalk(self, db: &impl HirDatabase) -> chalk_ir::Substitution<TypeFamily> {
-        self.iter().map(|ty| ty.clone().to_chalk(db).cast()).collect()
+        chalk_ir::Substitution::from(self.iter().map(|ty| ty.clone().to_chalk(db)))
    }
-    fn from_chalk(
+    fn from_chalk(db: &impl HirDatabase, parameters: chalk_ir::Substitution<TypeFamily>) -> Substs {
-        db: &impl HirDatabase,
-        parameters: Vec<chalk_ir::Parameter<TypeFamily>>,
-    ) -> Substs {
        let tys = parameters
            .into_iter()
            .map(|p| match p.ty() {
@@ -220,13 +221,13 @@ impl ToChalk for TraitRef {
    fn to_chalk(self: TraitRef, db: &impl HirDatabase) -> chalk_ir::TraitRef<TypeFamily> {
        let trait_id = self.trait_.to_chalk(db);
-        let parameters = self.substs.to_chalk(db);
+        let substitution = self.substs.to_chalk(db);
-        chalk_ir::TraitRef { trait_id, parameters }
+        chalk_ir::TraitRef { trait_id, substitution }
    }
    fn from_chalk(db: &impl HirDatabase, trait_ref: chalk_ir::TraitRef<TypeFamily>) -> Self {
        let trait_ = from_chalk(db, trait_ref.trait_id);
-        let substs = from_chalk(db, trait_ref.parameters);
+        let substs = from_chalk(db, trait_ref.substitution);
        TraitRef { trait_, substs }
    }
 }
@@ -317,8 +318,8 @@ impl ToChalk for GenericPredicate {
                make_binders(chalk_ir::WhereClause::Implemented(trait_ref.to_chalk(db)), 0)
            }
            GenericPredicate::Projection(projection_pred) => make_binders(
-                chalk_ir::WhereClause::ProjectionEq(chalk_ir::ProjectionEq {
+                chalk_ir::WhereClause::AliasEq(chalk_ir::AliasEq {
-                    projection: projection_pred.projection_ty.to_chalk(db),
+                    alias: projection_pred.projection_ty.to_chalk(db),
                    ty: projection_pred.ty.to_chalk(db),
                }),
                0,
@@ -335,8 +336,8 @@ impl ToChalk for GenericPredicate {
            chalk_ir::WhereClause::Implemented(tr) => {
                GenericPredicate::Implemented(from_chalk(db, tr))
            }
-            chalk_ir::WhereClause::ProjectionEq(projection_eq) => {
+            chalk_ir::WhereClause::AliasEq(projection_eq) => {
-                let projection_ty = from_chalk(db, projection_eq.projection);
+                let projection_ty = from_chalk(db, projection_eq.alias);
                let ty = from_chalk(db, projection_eq.ty);
                GenericPredicate::Projection(super::ProjectionPredicate { projection_ty, ty })
            }
@@ -345,22 +346,22 @@ impl ToChalk for GenericPredicate {
 }
 impl ToChalk for ProjectionTy {
-    type Chalk = chalk_ir::ProjectionTy<TypeFamily>;
+    type Chalk = chalk_ir::AliasTy<TypeFamily>;
-    fn to_chalk(self, db: &impl HirDatabase) -> chalk_ir::ProjectionTy<TypeFamily> {
+    fn to_chalk(self, db: &impl HirDatabase) -> chalk_ir::AliasTy<TypeFamily> {
-        chalk_ir::ProjectionTy {
+        chalk_ir::AliasTy {
            associated_ty_id: self.associated_ty.to_chalk(db),
-            parameters: self.parameters.to_chalk(db),
+            substitution: self.parameters.to_chalk(db),
        }
    }
    fn from_chalk(
        db: &impl HirDatabase,
-        projection_ty: chalk_ir::ProjectionTy<TypeFamily>,
+        projection_ty: chalk_ir::AliasTy<TypeFamily>,
    ) -> ProjectionTy {
        ProjectionTy {
            associated_ty: from_chalk(db, projection_ty.associated_ty_id),
-            parameters: from_chalk(db, projection_ty.parameters),
+            parameters: from_chalk(db, projection_ty.substitution),
        }
    }
 }
@@ -369,10 +370,7 @@ impl ToChalk for super::ProjectionPredicate {
    type Chalk = chalk_ir::Normalize<TypeFamily>;
    fn to_chalk(self, db: &impl HirDatabase) -> chalk_ir::Normalize<TypeFamily> {
-        chalk_ir::Normalize {
+        chalk_ir::Normalize { alias: self.projection_ty.to_chalk(db), ty: self.ty.to_chalk(db) }
-            projection: self.projection_ty.to_chalk(db),
-            ty: self.ty.to_chalk(db),
-        }
    }
    fn from_chalk(_db: &impl HirDatabase, _normalize: chalk_ir::Normalize<TypeFamily>) -> Self {
diff --git a/crates/ra_ide/Cargo.toml b/crates/ra_ide/Cargo.toml
index 2c9f9dce0..53817d1f7 100644
--- a/crates/ra_ide/Cargo.toml
+++ b/crates/ra_ide/Cargo.toml
@@ -39,7 +39,7 @@ ra_assists = { path = "../ra_assists" }
 hir = { path = "../ra_hir", package = "ra_hir" }
 [dev-dependencies]
-insta = "0.12.0"
+insta = "0.13.0"
 [dev-dependencies.proptest]
 version = "0.9.0"
diff --git a/crates/ra_ide/src/assists.rs b/crates/ra_ide/src/assists.rs
index a936900da..c43c45c65 100644
--- a/crates/ra_ide/src/assists.rs
+++ b/crates/ra_ide/src/assists.rs
@@ -2,8 +2,9 @@
 use ra_db::{FilePosition, FileRange};
-use crate::{db::RootDatabase, FileId, SourceChange, SourceFileEdit};
+use crate::{
+    db::RootDatabase, imports_locator::ImportsLocatorIde, FileId, SourceChange, SourceFileEdit,
+};
 use either::Either;
 pub use ra_assists::AssistId;
 use ra_assists::{AssistAction, AssistLabel};
@@ -16,7 +17,7 @@ pub struct Assist {
 }
 pub(crate) fn assists(db: &RootDatabase, frange: FileRange) -> Vec<Assist> {
-    ra_assists::assists(db, frange)
+    ra_assists::assists_with_imports_locator(db, frange, ImportsLocatorIde::new(db))
        .into_iter()
        .map(|assist| {
            let file_id = frange.file_id;
diff --git a/crates/ra_ide/src/change.rs b/crates/ra_ide/src/change.rs
index b0aa2c8e0..45a58690b 100644
--- a/crates/ra_ide/src/change.rs
+++ b/crates/ra_ide/src/change.rs
@@ -166,13 +166,15 @@ impl LibraryData {
 const GC_COOLDOWN: time::Duration = time::Duration::from_millis(100);
 impl RootDatabase {
+    pub(crate) fn request_cancellation(&mut self) {
+        let _p = profile("RootDatabase::request_cancellation");
+        self.salsa_runtime_mut().synthetic_write(Durability::LOW);
+    }
    pub(crate) fn apply_change(&mut self, change: AnalysisChange) {
        let _p = profile("RootDatabase::apply_change");
+        self.request_cancellation();
        log::info!("apply_change {:?}", change);
-        {
-            let _p = profile("RootDatabase::apply_change/cancellation");
-            self.salsa_runtime_mut().synthetic_write(Durability::LOW);
-        }
        if !change.new_roots.is_empty() {
            let mut local_roots = Vec::clone(&self.local_roots());
            for (root_id, is_local) in change.new_roots {
@@ -299,45 +301,74 @@ impl RootDatabase {
            )*}
        }
        sweep_each_query![
+            // SourceDatabase
            ra_db::ParseQuery
            ra_db::SourceRootCratesQuery
+            // AstDatabase
            hir::db::AstIdMapQuery
-            hir::db::ParseMacroQuery
+            hir::db::InternMacroQuery
-            hir::db::MacroDefQuery
            hir::db::MacroArgQuery
+            hir::db::MacroDefQuery
+            hir::db::ParseMacroQuery
            hir::db::MacroExpandQuery
+            // DefDatabase
+            hir::db::RawItemsQuery
+            hir::db::ComputeCrateDefMapQuery
            hir::db::StructDataQuery
+            hir::db::UnionDataQuery
            hir::db::EnumDataQuery
+            hir::db::ImplDataQuery
            hir::db::TraitDataQuery
-            hir::db::RawItemsQuery
-            hir::db::ComputeCrateDefMapQuery
-            hir::db::GenericParamsQuery
-            hir::db::FunctionDataQuery
            hir::db::TypeAliasDataQuery
+            hir::db::FunctionDataQuery
            hir::db::ConstDataQuery
            hir::db::StaticDataQuery
+            hir::db::BodyWithSourceMapQuery
+            hir::db::BodyQuery
+            hir::db::ExprScopesQuery
+            hir::db::GenericParamsQuery
+            hir::db::AttrsQuery
            hir::db::ModuleLangItemsQuery
            hir::db::CrateLangItemsQuery
            hir::db::LangItemQuery
            hir::db::DocumentationQuery
-            hir::db::ExprScopesQuery
+            // InternDatabase
+            hir::db::InternFunctionQuery
+            hir::db::InternStructQuery
+            hir::db::InternUnionQuery
+            hir::db::InternEnumQuery
+            hir::db::InternConstQuery
+            hir::db::InternStaticQuery
+            hir::db::InternTraitQuery
+            hir::db::InternTypeAliasQuery
+            hir::db::InternImplQuery
+            // HirDatabase
            hir::db::DoInferQuery
            hir::db::TyQuery
            hir::db::ValueTyQuery
+            hir::db::ImplSelfTyQuery
+            hir::db::ImplTraitQuery
            hir::db::FieldTypesQuery
            hir::db::CallableItemSignatureQuery
+            hir::db::GenericPredicatesForParamQuery
            hir::db::GenericPredicatesQuery
            hir::db::GenericDefaultsQuery
-            hir::db::BodyWithSourceMapQuery
-            hir::db::BodyQuery
            hir::db::ImplsInCrateQuery
            hir::db::ImplsForTraitQuery
+            hir::db::TraitSolverQuery
+            hir::db::InternTypeCtorQuery
+            hir::db::InternChalkImplQuery
+            hir::db::InternAssocTyValueQuery
            hir::db::AssociatedTyDataQuery
+            hir::db::AssociatedTyValueQuery
+            hir::db::TraitSolveQuery
            hir::db::TraitDatumQuery
            hir::db::StructDatumQuery
            hir::db::ImplDatumQuery
-            hir::db::ImplDataQuery
-            hir::db::TraitSolveQuery
        ];
        acc.sort_by_key(|it| std::cmp::Reverse(it.1));
        acc
diff --git a/crates/ra_ide/src/expand.rs b/crates/ra_ide/src/expand.rs
index b82259a3d..831438c09 100644
--- a/crates/ra_ide/src/expand.rs
+++ b/crates/ra_ide/src/expand.rs
@@ -79,6 +79,14 @@ pub(crate) fn descend_into_macros(
    let source_analyzer =
        hir::SourceAnalyzer::new(db, src.with_value(src.value.parent()).as_ref(), None);
+    descend_into_macros_with_analyzer(db, &source_analyzer, src)
+}
+pub(crate) fn descend_into_macros_with_analyzer(
+    db: &RootDatabase,
+    source_analyzer: &hir::SourceAnalyzer,
+    src: InFile<SyntaxToken>,
+) -> InFile<SyntaxToken> {
    successors(Some(src), |token| {
        let macro_call = token.value.ancestors().find_map(ast::MacroCall::cast)?;
        let tt = macro_call.token_tree()?;
diff --git a/crates/ra_ide/src/imports_locator.rs b/crates/ra_ide/src/imports_locator.rs
new file mode 100644
index 000000000..48b014c7d
--- /dev/null
+++ b/crates/ra_ide/src/imports_locator.rs
@@ -0,0 +1,76 @@
+//! This module contains an import search funcionality that is provided to the ra_assists module.
+//! Later, this should be moved away to a separate crate that is accessible from the ra_assists module.
+use crate::{
+    db::RootDatabase,
+    references::{classify_name, NameDefinition, NameKind},
+    symbol_index::{self, FileSymbol},
+    Query,
+};
+use hir::{db::HirDatabase, ModuleDef, SourceBinder};
+use ra_assists::ImportsLocator;
+use ra_prof::profile;
+use ra_syntax::{ast, AstNode, SyntaxKind::NAME};
+pub(crate) struct ImportsLocatorIde<'a> {
+    source_binder: SourceBinder<'a, RootDatabase>,
+}
+impl<'a> ImportsLocatorIde<'a> {
+    pub(crate) fn new(db: &'a RootDatabase) -> Self {
+        Self { source_binder: SourceBinder::new(db) }
+    }
+    fn get_name_definition(
+        &mut self,
+        db: &impl HirDatabase,
+        import_candidate: &FileSymbol,
+    ) -> Option<NameDefinition> {
+        let _p = profile("get_name_definition");
+        let file_id = import_candidate.file_id.into();
+        let candidate_node = import_candidate.ptr.to_node(&db.parse_or_expand(file_id)?);
+        let candidate_name_node = if candidate_node.kind() != NAME {
+            candidate_node.children().find(|it| it.kind() == NAME)?
+        } else {
+            candidate_node
+        };
+        classify_name(
+            &mut self.source_binder,
+            hir::InFile { file_id, value: &ast::Name::cast(candidate_name_node)? },
+        )
+    }
+}
+impl ImportsLocator for ImportsLocatorIde<'_> {
+    fn find_imports(&mut self, name_to_import: &str) -> Vec<ModuleDef> {
+        let _p = profile("search_for_imports");
+        let db = self.source_binder.db;
+        let project_results = {
+            let mut query = Query::new(name_to_import.to_string());
+            query.exact();
+            query.limit(40);
+            symbol_index::world_symbols(db, query)
+        };
+        let lib_results = {
+            let mut query = Query::new(name_to_import.to_string());
+            query.libs();
+            query.exact();
+            query.limit(40);
+            symbol_index::world_symbols(db, query)
+        };
+        project_results
+            .into_iter()
+            .chain(lib_results.into_iter())
+            .filter_map(|import_candidate| self.get_name_definition(db, &import_candidate))
+            .filter_map(|name_definition_to_import| {
+                if let NameKind::Def(module_def) = name_definition_to_import.kind {
+                    Some(module_def)
+                } else {
+                    None
+                }
+            })
+            .collect()
+    }
+}
diff --git a/crates/ra_ide/src/lib.rs b/crates/ra_ide/src/lib.rs
index 4d8deb21c..03ad6b2c1 100644
--- a/crates/ra_ide/src/lib.rs
+++ b/crates/ra_ide/src/lib.rs
@@ -30,6 +30,7 @@ mod syntax_highlighting;
 mod parent_module;
 mod references;
 mod impls;
+mod imports_locator;
 mod assists;
 mod diagnostics;
 mod syntax_tree;
@@ -202,6 +203,9 @@ impl AnalysisHost {
    pub fn per_query_memory_usage(&mut self) -> Vec<(String, ra_prof::Bytes)> {
        self.db.per_query_memory_usage()
    }
+    pub fn request_cancellation(&mut self) {
+        self.db.request_cancellation();
+    }
    pub fn raw_database(
        &self,
    ) -> &(impl hir::db::HirDatabase + salsa::Database + ra_db::SourceDatabaseExt) {
diff --git a/crates/ra_ide/src/references.rs b/crates/ra_ide/src/references.rs
index 5e2fe1905..ebded715d 100644
--- a/crates/ra_ide/src/references.rs
+++ b/crates/ra_ide/src/references.rs
@@ -112,25 +112,20 @@ impl IntoIterator for ReferenceSearchResult {
 pub(crate) fn find_all_refs(
    db: &RootDatabase,
-    mut position: FilePosition,
+    position: FilePosition,
    search_scope: Option<SearchScope>,
 ) -> Option<RangeInfo<ReferenceSearchResult>> {
    let parse = db.parse(position.file_id);
    let syntax = parse.tree().syntax().clone();
-    let token = syntax.token_at_offset(position.offset);
+    let (opt_name, search_kind) =
-    let mut search_kind = ReferenceKind::Other;
+        if let Some(name) = get_struct_def_name_for_struc_litetal_search(&syntax, position) {
+            (Some(name), ReferenceKind::StructLiteral)
+        } else {
+            (find_node_at_offset::<ast::Name>(&syntax, position.offset), ReferenceKind::Other)
+        };
-    if let TokenAtOffset::Between(ref left, ref right) = token {
+    let RangeInfo { range, info: (name, def) } = find_name(db, &syntax, position, opt_name)?;
-        if (right.kind() == SyntaxKind::L_CURLY || right.kind() == SyntaxKind::L_PAREN)
-            && left.kind() != SyntaxKind::IDENT
-        {
-            position = FilePosition { offset: left.text_range().start(), ..position };
-            search_kind = ReferenceKind::StructLiteral;
-        }
-    }
-    let RangeInfo { range, info: (name, def) } = find_name(db, &syntax, position)?;
    let declaration = match def.kind {
        NameKind::Macro(mac) => mac.to_nav(db),
@@ -170,9 +165,10 @@ fn find_name(
    db: &RootDatabase,
    syntax: &SyntaxNode,
    position: FilePosition,
+    opt_name: Option<ast::Name>,
 ) -> Option<RangeInfo<(String, NameDefinition)>> {
    let mut sb = SourceBinder::new(db);
-    if let Some(name) = find_node_at_offset::<ast::Name>(&syntax, position.offset) {
+    if let Some(name) = opt_name {
        let def = classify_name(&mut sb, InFile::new(position.file_id.into(), &name))?;
        let range = name.syntax().text_range();
        return Some(RangeInfo::new(range, (name.text().to_string(), def)));
@@ -218,15 +214,8 @@ fn process_definition(
                if let Some(d) = classify_name_ref(&mut sb, InFile::new(file_id.into(), &name_ref))
                {
                    if d == def {
-                        let kind = if name_ref
+                        let kind = if is_record_lit_name_ref(&name_ref)
-                            .syntax()
+                            || is_call_expr_name_ref(&name_ref)
-                            .ancestors()
-                            .find_map(ast::RecordLit::cast)
-                            .and_then(|l| l.path())
-                            .and_then(|p| p.segment())
-                            .and_then(|p| p.name_ref())
-                            .map(|n| n == name_ref)
-                            .unwrap_or(false)
                        {
                            ReferenceKind::StructLiteral
                        } else {
@@ -301,6 +290,49 @@ fn reference_access(kind: &NameKind, name_ref: &ast::NameRef) -> Option<Referenc
    mode.or(Some(ReferenceAccess::Read))
 }
+fn is_record_lit_name_ref(name_ref: &ast::NameRef) -> bool {
+    name_ref
+        .syntax()
+        .ancestors()
+        .find_map(ast::RecordLit::cast)
+        .and_then(|l| l.path())
+        .and_then(|p| p.segment())
+        .map(|p| p.name_ref().as_ref() == Some(name_ref))
+        .unwrap_or(false)
+}
+fn get_struct_def_name_for_struc_litetal_search(
+    syntax: &SyntaxNode,
+    position: FilePosition,
+) -> Option<ast::Name> {
+    if let TokenAtOffset::Between(ref left, ref right) = syntax.token_at_offset(position.offset) {
+        if right.kind() != SyntaxKind::L_CURLY && right.kind() != SyntaxKind::L_PAREN {
+            return None;
+        }
+        if let Some(name) = find_node_at_offset::<ast::Name>(&syntax, left.text_range().start()) {
+            return name.syntax().ancestors().find_map(ast::StructDef::cast).and_then(|l| l.name());
+        }
+        if find_node_at_offset::<ast::TypeParamList>(&syntax, left.text_range().start()).is_some() {
+            return left.ancestors().find_map(ast::StructDef::cast).and_then(|l| l.name());
+        }
+    }
+    None
+}
+fn is_call_expr_name_ref(name_ref: &ast::NameRef) -> bool {
+    name_ref
+        .syntax()
+        .ancestors()
+        .find_map(ast::CallExpr::cast)
+        .and_then(|c| match c.expr()? {
+            ast::Expr::PathExpr(p) => {
+                Some(p.path()?.segment()?.name_ref().as_ref() == Some(name_ref))
+            }
+            _ => None,
+        })
+        .unwrap_or(false)
+}
 #[cfg(test)]
 mod tests {
    use crate::{
@@ -309,7 +341,7 @@ mod tests {
    };
    #[test]
-    fn test_struct_literal() {
+    fn test_struct_literal_after_space() {
        let code = r#"
    struct Foo <|>{
        a: i32,
@@ -331,6 +363,58 @@ mod tests {
    }
    #[test]
+    fn test_struct_literal_befor_space() {
+        let code = r#"
+    struct Foo<|> {}
+        fn main() {
+        let f: Foo;
+        f = Foo {};
+    }"#;
+        let refs = get_all_refs(code);
+        check_result(
+            refs,
+            "Foo STRUCT_DEF FileId(1) [5; 18) [12; 15) Other",
+            &["FileId(1) [54; 57) Other", "FileId(1) [71; 74) StructLiteral"],
+        );
+    }
+    #[test]
+    fn test_struct_literal_with_generic_type() {
+        let code = r#"
+    struct Foo<T> <|>{}
+        fn main() {
+        let f: Foo::<i32>;
+        f = Foo {};
+    }"#;
+        let refs = get_all_refs(code);
+        check_result(
+            refs,
+            "Foo STRUCT_DEF FileId(1) [5; 21) [12; 15) Other",
+            &["FileId(1) [81; 84) StructLiteral"],
+        );
+    }
+    #[test]
+    fn test_struct_literal_for_tuple() {
+        let code = r#"
+    struct Foo<|>(i32);
+    fn main() {
+        let f: Foo;
+        f = Foo(1);
+    }"#;
+        let refs = get_all_refs(code);
+        check_result(
+            refs,
+            "Foo STRUCT_DEF FileId(1) [5; 21) [12; 15) Other",
+            &["FileId(1) [71; 74) StructLiteral"],
+        );
+    }
+    #[test]
    fn test_find_all_refs_for_local() {
        let code = r#"