Merge #3220

3220: Fix clippy warnings, update Cargo.toml versions r=matklad a=SomeoneToIgnore

In the `cargo xtask lint` ouptut, there were two interesting Clippy warnings that might be interesting to investigate further:

* warning: this argument (4 byte) is passed by reference, but would be more efficient if passed by value (limit: 8 byte)

* warning: large size difference between variants

Co-authored-by: Kirill Bulatov <[email protected]>

1 files changed, 3 insertions, 6 deletions

diff --git a/crates/ra_hir_ty/src/traits.rs b/crates/ra_hir_ty/src/traits.rs
index ff8e75b48..e83449957 100644
--- a/crates/ra_hir_ty/src/traits.rs
+++ b/crates/ra_hir_ty/src/traits.rs
@@ -248,12 +248,9 @@ fn solution_from_chalk(
         let value = subst
             .value
             .into_iter()
-            .map(|p| {
-                let ty = match p.ty() {
-                    Some(ty) => from_chalk(db, ty.clone()),
-                    None => unimplemented!(),
-                };
-                ty
+            .map(|p| match p.ty() {
+                Some(ty) => from_chalk(db, ty.clone()),
+                None => unimplemented!(),
             })
             .collect();
         let result = Canonical { value, num_vars: subst.binders.len() };