5 files changed, 14 insertions, 17 deletions

diff --git a/crates/gen_lsp_server/src/msg.rs b/crates/gen_lsp_server/src/msg.rs
index e0d0aeab5..e1b27c808 100644
--- a/crates/gen_lsp_server/src/msg.rs
+++ b/crates/gen_lsp_server/src/msg.rs
@@ -94,7 +94,7 @@ impl RawRequest {
         R::Params: Serialize,
     {
         RawRequest {
-            id: id,
+            id,
             method: R::METHOD.to_string(),
             params: to_value(params).unwrap(),
         }
diff --git a/crates/ra_lsp_server/src/conv.rs b/crates/ra_lsp_server/src/conv.rs
index 5d5a0c55e..28368787c 100644
--- a/crates/ra_lsp_server/src/conv.rs
+++ b/crates/ra_lsp_server/src/conv.rs
@@ -63,10 +63,7 @@ impl ConvWith for TextUnit {
 
     fn conv_with(self, line_index: &LineIndex) -> Position {
         let line_col = line_index.line_col(self);
-        Position::new(
-            u64::from(line_col.line),
-            u64::from(u32::from(line_col.col_utf16)),
-        )
+        Position::new(u64::from(line_col.line), u64::from(line_col.col_utf16))
     }
 }
 
@@ -204,10 +201,8 @@ impl TryConvWith for SourceChange {
                     .map(|it| it.edits.as_slice())
                     .unwrap_or(&[]);
                 let line_col = translate_offset_with_edit(&*line_index, pos.offset, edits);
-                let position = Position::new(
-                    u64::from(line_col.line),
-                    u64::from(u32::from(line_col.col_utf16)),
-                );
+                let position =
+                    Position::new(u64::from(line_col.line), u64::from(line_col.col_utf16));
                 Some(TextDocumentPositionParams {
                     text_document: TextDocumentIdentifier::new(pos.file_id.try_conv_with(world)?),
                     position,
diff --git a/crates/ra_lsp_server/src/main.rs b/crates/ra_lsp_server/src/main.rs
index 26bcddd8e..173418520 100644
--- a/crates/ra_lsp_server/src/main.rs
+++ b/crates/ra_lsp_server/src/main.rs
@@ -2,7 +2,6 @@
 extern crate log;
 #[macro_use]
 extern crate failure;
-#[macro_use]
 extern crate serde_derive;
 extern crate serde;
 extern crate flexi_logger;
diff --git a/crates/ra_lsp_server/src/main_loop/handlers.rs b/crates/ra_lsp_server/src/main_loop/handlers.rs
index 27933a7ae..6d5622b15 100644
--- a/crates/ra_lsp_server/src/main_loop/handlers.rs
+++ b/crates/ra_lsp_server/src/main_loop/handlers.rs
@@ -384,7 +384,7 @@ pub fn handle_completion(
     let completion_triggered_after_single_colon = {
         let mut res = false;
         if let Some(ctx) = params.context {
-            if ctx.trigger_character.unwrap_or(String::new()) == ":" {
+            if ctx.trigger_character.unwrap_or_default() == ":" {
                 let source_file = world.analysis().file_syntax(position.file_id);
                 let syntax = source_file.syntax();
                 let text = syntax.text();
@@ -567,10 +567,13 @@ pub fn handle_rename(world: ServerWorld, params: RenameParams) -> Result<Option<
     let mut changes = HashMap::new();
     for r in refs {
         if let Ok(loc) = to_location(r.0, r.1, &world, &line_index) {
-            changes.entry(loc.uri).or_insert(Vec::new()).push(TextEdit {
-                range: loc.range,
-                new_text: params.new_name.clone(),
-            });
+            changes
+                .entry(loc.uri)
+                .or_insert_with(Vec::new)
+                .push(TextEdit {
+                    range: loc.range,
+                    new_text: params.new_name.clone(),
+                });
         }
     }
 
diff --git a/crates/ra_lsp_server/src/path_map.rs b/crates/ra_lsp_server/src/path_map.rs
index a624043d8..33babda4b 100644
--- a/crates/ra_lsp_server/src/path_map.rs
+++ b/crates/ra_lsp_server/src/path_map.rs
@@ -33,7 +33,7 @@ impl PathMap {
         let file_id = self
             .path2id
             .get(path.as_path())
-            .map(|&id| id)
+            .cloned()
             .unwrap_or_else(|| {
                 inserted = true;
                 let id = self.new_file_id();
@@ -43,7 +43,7 @@ impl PathMap {
         (inserted, file_id)
     }
     pub fn get_id(&self, path: &Path) -> Option<FileId> {
-        self.path2id.get(path).map(|&id| id)
+        self.path2id.get(path).cloned()
     }
     pub fn get_path(&self, file_id: FileId) -> &Path {
         self.id2path.get(&file_id).unwrap().as_path()