Merge #1482

1482: Some clippy fixes for 1.36 r=kjeremy a=kjeremy

Some clippy fixes now that 1.36 is released. ~~Plus the requisite format run (I can rebase after #1481 is merged to make this cleaner) .~~

The change from `map(|it| *it)` to `copied()` changes the minimum rust stable to 1.36.


Co-authored-by: Jeremy Kolb <[email protected]>

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/ra_ide_api/src/display/structure.rs b/crates/ra_ide_api/src/display/structure.rs
index e5b257b9b..638484a9b 100644
--- a/crates/ra_ide_api/src/display/structure.rs
+++ b/crates/ra_ide_api/src/display/structure.rs
@@ -25,7 +25,7 @@ pub fn file_structure(file: &SourceFile) -> Vec<StructureNode> {
         match event {
             WalkEvent::Enter(node) => {
                 if let Some(mut symbol) = structure_node(node) {
-                    symbol.parent = stack.last().map(|&n| n);
+                    symbol.parent = stack.last().copied();
                     stack.push(res.len());
                     res.push(symbol);
                 }