Merge #4982

4982: Bump chalk r=matklad a=lnicola

This passes the tests, but fails in a weird way on `analysis-stats`:

```
thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', /home/me/.cargo/registry/src/github.com-1ecc6299db9ec823/chalk-solve-0.14.0/src/clauses/builtin_traits/fn_family.rs:96:20
stack backtrace:
   0: backtrace::backtrace::libunwind::trace
             at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
   1: backtrace::backtrace::trace_unsynchronized
             at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
   2: std::sys_common::backtrace::_print_fmt
             at src/libstd/sys_common/backtrace.rs:78
   3: <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt
             at src/libstd/sys_common/backtrace.rs:59
   4: core::fmt::write
             at src/libcore/fmt/mod.rs:1076
   5: std::io::Write::write_fmt
             at src/libstd/io/mod.rs:1537
   6: std::sys_common::backtrace::_print
             at src/libstd/sys_common/backtrace.rs:62
   7: std::sys_common::backtrace::print
             at src/libstd/sys_common/backtrace.rs:49
   8: std::panicking::default_hook::{{closure}}
             at src/libstd/panicking.rs:198
   9: std::panicking::default_hook
             at src/libstd/panicking.rs:218
  10: std::panicking::rust_panic_with_hook
             at src/libstd/panicking.rs:477
  11: rust_begin_unwind
             at src/libstd/panicking.rs:385
  12: core::panicking::panic_fmt
             at src/libcore/panicking.rs:86
  13: core::panicking::panic
             at src/libcore/panicking.rs:51
  14: chalk_solve::clauses::builtin_traits::fn_family::add_fn_trait_program_clauses
  15: chalk_solve::clauses::builder::ClauseBuilder<I>::push_binders
  16: chalk_solve::clauses::program_clauses_that_could_match
  17: chalk_solve::clauses::program_clauses_for_goal
  18: chalk_solve::recursive::Solver<I>::solve_new_subgoal
  19: <chalk_solve::recursive::Solver<I> as chalk_solve::recursive::solve::SolveDatabase<I>>::solve_goal
  20: chalk_solve::recursive::Solver<I>::solve_root_goal
  21: chalk_solve::solve::Solver<I>::solve_limited
  22: ra_hir_ty::traits::trait_solve_query
  23: salsa::runtime::Runtime<DB>::execute_query_implementation
  24: salsa::derived::slot::Slot<DB,Q,MP>::read_upgrade
  25: salsa::derived::slot::Slot<DB,Q,MP>::read
  26: <salsa::derived::DerivedStorage<DB,Q,MP> as salsa::plumbing::QueryStorageOps<DB,Q>>::try_fetch
  27: salsa::QueryTable<DB,Q>::get
  28: <T as ra_hir_ty::db::HirDatabase>::trait_solve
  29: ra_hir_ty::infer::InferenceContext::resolve_ty_as_possible
  30: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_inner
  31: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_coerce
  32: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::check_call_arguments
  33: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_method_call
  34: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_inner
  35: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr
  36: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_method_call
  37: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_inner
  38: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_coerce
  39: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_inner
  40: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_inner
  41: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_coerce
  42: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_inner
  43: ra_hir_ty::infer::expr::<impl ra_hir_ty::infer::InferenceContext>::infer_expr_coerce
  44: ra_hir_ty::infer::infer_query
  45: salsa::runtime::Runtime<DB>::execute_query_implementation
  46: salsa::derived::slot::Slot<DB,Q,MP>::read_upgrade
  47: salsa::derived::slot::Slot<DB,Q,MP>::read
  48: <salsa::derived::DerivedStorage<DB,Q,MP> as salsa::plumbing::QueryStorageOps<DB,Q>>::try_fetch
  49: ra_hir_ty::db::infer_wait
  50: rust_analyzer::cli::analysis_stats::analysis_stats
  51: rust_analyzer::main
  52: std::rt::lang_start::{{closure}}
  53: std::rt::lang_start_internal::{{closure}}
             at src/libstd/rt.rs:52
  54: std::panicking::try::do_call
             at src/libstd/panicking.rs:297
  55: std::panicking::try
             at src/libstd/panicking.rs:274
  56: std::panic::catch_unwind
             at src/libstd/panic.rs:394
  57: std::rt::lang_start_internal
             at src/libstd/rt.rs:51
  58: main
  59: __libc_start_main
  60: _start
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
```

It's as if we're returning `None` for a well-known trait that `chalk` asks about. That seems to happen for `Deref`, `CoerceUnsized` and `Try`.

r? @flodiebold

Co-authored-by: Laurențiu Nicola <[email protected]>

1 files changed, 23 insertions, 19 deletions

diff --git a/crates/ra_hir_ty/src/tests/coercion.rs b/crates/ra_hir_ty/src/tests/coercion.rs
index a2601c68a..5a1c6ccc3 100644
--- a/crates/ra_hir_ty/src/tests/coercion.rs
+++ b/crates/ra_hir_ty/src/tests/coercion.rs
@@ -664,6 +664,8 @@ fn test() {
 fn coerce_unsize_trait_object() {
     assert_snapshot!(
         infer_with_mismatches(r#"
+#[lang = "sized"]
+pub trait Sized {}
 #[lang = "unsize"]
 pub trait Unsize<T> {}
 #[lang = "coerce_unsized"]
@@ -689,19 +691,19 @@ fn test() {
 }
 "#, true),
         @r###"
-    387..572 '{     ...bj2; }': ()
-    397..400 'obj': &dyn Baz<i8, i16>
-    422..424 '&S': &S<i8, i16>
-    423..424 'S': S<i8, i16>
-    434..437 'obj': &dyn Bar<usize, i8, i16>
-    459..462 'obj': &dyn Baz<i8, i16>
-    472..475 'obj': &dyn Foo<i8, usize>
-    494..497 'obj': &dyn Bar<usize, i8, i16>
-    507..511 'obj2': &dyn Baz<i8, i16>
-    533..535 '&S': &S<i8, i16>
-    534..535 'S': S<i8, i16>
-    545..546 '_': &dyn Foo<i8, usize>
-    565..569 'obj2': &dyn Baz<i8, i16>
+    424..609 '{     ...bj2; }': ()
+    434..437 'obj': &dyn Baz<i8, i16>
+    459..461 '&S': &S<i8, i16>
+    460..461 'S': S<i8, i16>
+    471..474 'obj': &dyn Bar<usize, i8, i16>
+    496..499 'obj': &dyn Baz<i8, i16>
+    509..512 'obj': &dyn Foo<i8, usize>
+    531..534 'obj': &dyn Bar<usize, i8, i16>
+    544..548 'obj2': &dyn Baz<i8, i16>
+    570..572 '&S': &S<i8, i16>
+    571..572 'S': S<i8, i16>
+    582..583 '_': &dyn Foo<i8, usize>
+    602..606 'obj2': &dyn Baz<i8, i16>
     "###
     );
 }
@@ -710,6 +712,8 @@ fn test() {
 fn coerce_unsize_super_trait_cycle() {
     assert_snapshot!(
         infer_with_mismatches(r#"
+#[lang = "sized"]
+pub trait Sized {}
 #[lang = "unsize"]
 pub trait Unsize<T> {}
 #[lang = "coerce_unsized"]
@@ -734,12 +738,12 @@ fn test() {
 }
 "#, true),
         @r###"
-    291..347 '{     ...obj; }': ()
-    301..304 'obj': &dyn D
-    315..317 '&S': &S
-    316..317 'S': S
-    327..330 'obj': &dyn A
-    341..344 'obj': &dyn D
+    328..384 '{     ...obj; }': ()
+    338..341 'obj': &dyn D
+    352..354 '&S': &S
+    353..354 'S': S
+    364..367 'obj': &dyn A
+    378..381 'obj': &dyn D
     "###
     );
 }