4 files changed, 6 insertions, 7 deletions

diff --git a/crates/ra_ide_api/src/db.rs b/crates/ra_ide_api/src/db.rs
index fc5b06ca8..44216b045 100644
--- a/crates/ra_ide_api/src/db.rs
+++ b/crates/ra_ide_api/src/db.rs
@@ -72,8 +72,8 @@ impl salsa::ParallelDatabase for RootDatabase {
     fn snapshot(&self) -> salsa::Snapshot<RootDatabase> {
         salsa::Snapshot::new(RootDatabase {
             runtime: self.runtime.snapshot(self),
-            last_gc: self.last_gc.clone(),
-            last_gc_check: self.last_gc_check.clone(),
+            last_gc: self.last_gc,
+            last_gc_check: self.last_gc_check,
         })
     }
 }
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);
                 }
diff --git a/crates/ra_ide_api/src/line_index_utils.rs b/crates/ra_ide_api/src/line_index_utils.rs
index f9073dca2..8f63db5f1 100644
--- a/crates/ra_ide_api/src/line_index_utils.rs
+++ b/crates/ra_ide_api/src/line_index_utils.rs
@@ -137,7 +137,7 @@ impl<'a> Edits<'a> {
             Step::Newline(n) => n,
             Step::Utf16Char(r) => r.end(),
         };
-        let res = match &mut self.current {
+        match &mut self.current {
             Some(edit) => {
                 if step_pos <= edit.delete.start() {
                     NextSteps::Use
@@ -155,8 +155,7 @@ impl<'a> Edits<'a> {
                 }
             }
             None => NextSteps::Use,
-        };
-        res
+        }
     }
 
     fn translate_range(&self, range: TextRange) -> TextRange {
diff --git a/crates/ra_ide_api/src/symbol_index.rs b/crates/ra_ide_api/src/symbol_index.rs
index 2ca0a25d4..f4a0c6ac7 100644
--- a/crates/ra_ide_api/src/symbol_index.rs
+++ b/crates/ra_ide_api/src/symbol_index.rs
@@ -87,7 +87,7 @@ pub(crate) fn world_symbols(db: &RootDatabase, query: Query) -> Vec<FileSymbol>
         let mut files = Vec::new();
         for &root in db.local_roots().iter() {
             let sr = db.source_root(root);
-            files.extend(sr.files.values().map(|&it| it))
+            files.extend(sr.files.values().copied())
         }
 
         let snap = Snap(db.snapshot());