diff --git a/crates/ra_editor/Cargo.toml b/crates/ra_editor/Cargo.toml
index 91cefc8d769..7791da15625 100644
--- a/crates/ra_editor/Cargo.toml
+++ b/crates/ra_editor/Cargo.toml
@@ -1,4 +1,5 @@
 [package]
+edition = "2018"
 name = "ra_editor"
 version = "0.1.0"
 authors = ["Aleksey Kladov <aleksey.kladov@gmail.com>"]
diff --git a/crates/ra_editor/src/code_actions.rs b/crates/ra_editor/src/code_actions.rs
index 216d592ff45..7b0a48c81a3 100644
--- a/crates/ra_editor/src/code_actions.rs
+++ b/crates/ra_editor/src/code_actions.rs
@@ -11,7 +11,7 @@
     },
 };
 
-use {EditBuilder, Edit, find_node_at_offset};
+use crate::{EditBuilder, Edit, find_node_at_offset};
 
 #[derive(Debug)]
 pub struct LocalEdit {
@@ -136,7 +136,7 @@ fn non_trivia_sibling(node: SyntaxNodeRef, direction: Direction) -> Option<Synta
 #[cfg(test)]
 mod tests {
     use super::*;
-    use test_utils::{check_action, check_action_range};
+    use crate::test_utils::{check_action, check_action_range};
 
     #[test]
     fn test_swap_comma() {
diff --git a/crates/ra_editor/src/completion.rs b/crates/ra_editor/src/completion.rs
index 20b8484b339..b6095dca9c5 100644
--- a/crates/ra_editor/src/completion.rs
+++ b/crates/ra_editor/src/completion.rs
@@ -9,7 +9,7 @@
     text_utils::is_subrange,
 };
 
-use {
+use crate::{
     AtomEdit, find_node_at_offset,
     scope::{FnScopes, ModuleScope},
 };
diff --git a/crates/ra_editor/src/edit.rs b/crates/ra_editor/src/edit.rs
index 2839ac20a00..46e6873197b 100644
--- a/crates/ra_editor/src/edit.rs
+++ b/crates/ra_editor/src/edit.rs
@@ -1,4 +1,4 @@
-use {TextRange, TextUnit};
+use crate::{TextRange, TextUnit};
 use ra_syntax::{
     AtomEdit,
     text_utils::contains_offset_nonstrict,
diff --git a/crates/ra_editor/src/lib.rs b/crates/ra_editor/src/lib.rs
index 710afc65d55..bd61fd1914f 100644
--- a/crates/ra_editor/src/lib.rs
+++ b/crates/ra_editor/src/lib.rs
@@ -164,7 +164,7 @@ pub fn resolve_local_name(file: &File, offset: TextUnit, name_ref: ast::NameRef)
 #[cfg(test)]
 mod tests {
     use super::*;
-    use test_utils::{assert_eq_dbg, extract_offset, add_cursor};
+    use crate::test_utils::{assert_eq_dbg, extract_offset, add_cursor};
 
     #[test]
     fn test_highlighting() {
diff --git a/crates/ra_editor/src/line_index.rs b/crates/ra_editor/src/line_index.rs
index 9cd8da3a893..6ccfdbd83ab 100644
--- a/crates/ra_editor/src/line_index.rs
+++ b/crates/ra_editor/src/line_index.rs
@@ -1,5 +1,5 @@
 use superslice::Ext;
-use ::TextUnit;
+use crate::TextUnit;
 
 #[derive(Clone, Debug, Hash)]
 pub struct LineIndex {
diff --git a/crates/ra_editor/src/scope/fn_scope.rs b/crates/ra_editor/src/scope/fn_scope.rs
index 9a48bda020d..99d698b607f 100644
--- a/crates/ra_editor/src/scope/fn_scope.rs
+++ b/crates/ra_editor/src/scope/fn_scope.rs
@@ -174,7 +174,7 @@ fn compute_expr_scopes(expr: ast::Expr, scopes: &mut FnScopes, scope: ScopeId) {
             }
         }
         ast::Expr::LambdaExpr(e) => {
-            let mut scope = scopes.new_scope(scope);
+            let scope = scopes.new_scope(scope);
             scopes.add_params_bindings(scope, e.param_list());
             if let Some(body) = e.body() {
                 scopes.set_scope(body.syntax(), scope);
@@ -256,7 +256,7 @@ pub fn resolve_local_name<'a>(name_ref: ast::NameRef, scopes: &'a FnScopes) -> O
 mod tests {
     use super::*;
     use ra_syntax::File;
-    use {find_node_at_offset, test_utils::extract_offset};
+    use crate::{find_node_at_offset, test_utils::extract_offset};
 
     fn do_check(code: &str, expected: &[&str]) {
         let (off, code) = extract_offset(code);
diff --git a/crates/ra_editor/src/symbols.rs b/crates/ra_editor/src/symbols.rs
index e5cc5ca284f..6211ed5477c 100644
--- a/crates/ra_editor/src/symbols.rs
+++ b/crates/ra_editor/src/symbols.rs
@@ -6,7 +6,7 @@
         walk::{walk, WalkEvent},
     },
 };
-use TextRange;
+use crate::TextRange;
 
 #[derive(Debug, Clone)]
 pub struct StructureNode {
diff --git a/crates/ra_editor/src/test_utils.rs b/crates/ra_editor/src/test_utils.rs
index c4ea4db6c97..49eb530d50b 100644
--- a/crates/ra_editor/src/test_utils.rs
+++ b/crates/ra_editor/src/test_utils.rs
@@ -1,6 +1,6 @@
 use ra_syntax::{File, TextUnit, TextRange};
-pub use _test_utils::*;
-use LocalEdit;
+pub use crate::_test_utils::*;
+use crate::LocalEdit;
 
 pub fn check_action<F: Fn(&File, TextUnit) -> Option<LocalEdit>> (
     before: &str,
diff --git a/crates/ra_editor/src/typing.rs b/crates/ra_editor/src/typing.rs
index 1dc658f9b09..542b9e10bd9 100644
--- a/crates/ra_editor/src/typing.rs
+++ b/crates/ra_editor/src/typing.rs
@@ -10,7 +10,7 @@
     SyntaxKind::*,
 };
 
-use {LocalEdit, EditBuilder, find_node_at_offset};
+use crate::{LocalEdit, EditBuilder, find_node_at_offset};
 
 pub fn join_lines(file: &File, range: TextRange) -> LocalEdit {
     let range = if range.is_empty() {
@@ -244,7 +244,7 @@ fn compute_ws(left: SyntaxNodeRef, right: SyntaxNodeRef) -> &'static str {
 #[cfg(test)]
 mod tests {
     use super::*;
-    use test_utils::{check_action, extract_range, extract_offset, add_cursor};
+    use crate::test_utils::{check_action, extract_range, extract_offset, add_cursor};
 
     fn check_join_lines(before: &str, after: &str) {
         check_action(before, after, |file, offset| {