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, 1 insertions, 1 deletions

diff --git a/crates/ra_ide/src/call_info.rs b/crates/ra_ide/src/call_info.rs
index f2b29306e..7c6322cb4 100644
--- a/crates/ra_ide/src/call_info.rs
+++ b/crates/ra_ide/src/call_info.rs
@@ -128,7 +128,7 @@ impl FnCallNode {
             }),
 
             FnCallNode::MethodCallExpr(call_expr) => {
-                call_expr.syntax().children().filter_map(ast::NameRef::cast).nth(0)
+                call_expr.syntax().children().filter_map(ast::NameRef::cast).next()
             }
 
             FnCallNode::MacroCallExpr(call_expr) => call_expr.path()?.segment()?.name_ref(),