diff --git a/clippy_lints/src/methods/mod.rs b/clippy_lints/src/methods/mod.rs
index e7b07bb1c1b6..db94d9dcdafa 100644
--- a/clippy_lints/src/methods/mod.rs
+++ b/clippy_lints/src/methods/mod.rs
@@ -17,7 +17,7 @@ use rustc::{declare_lint_pass, declare_tool_lint};
 use rustc_errors::Applicability;
 use syntax::ast;
 use syntax::source_map::Span;
-use syntax::symbol::{sym, LocalInternedString, Symbol};
+use syntax::symbol::{sym, Symbol, SymbolStr};
 
 use crate::utils::usage::mutated_variables;
 use crate::utils::{
@@ -1148,8 +1148,8 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for Methods {
         }
 
         let (method_names, arg_lists, method_spans) = method_calls(expr, 2);
-        let method_names: Vec<LocalInternedString> = method_names.iter().map(|s| s.as_str()).collect();
-        let method_names: Vec<&str> = method_names.iter().map(std::convert::AsRef::as_ref).collect();
+        let method_names: Vec<SymbolStr> = method_names.iter().map(|s| s.as_str()).collect();
+        let method_names: Vec<&str> = method_names.iter().map(|s| &**s).collect();
 
         match method_names.as_slice() {
             ["unwrap", "get"] => lint_get_unwrap(cx, expr, arg_lists[1], false),
diff --git a/clippy_lints/src/non_expressive_names.rs b/clippy_lints/src/non_expressive_names.rs
index 08a78b784ba5..12df9325650f 100644
--- a/clippy_lints/src/non_expressive_names.rs
+++ b/clippy_lints/src/non_expressive_names.rs
@@ -5,7 +5,7 @@ use std::cmp::Ordering;
 use syntax::ast::*;
 use syntax::attr;
 use syntax::source_map::Span;
-use syntax::symbol::LocalInternedString;
+use syntax::symbol::SymbolStr;
 use syntax::visit::{walk_block, walk_expr, walk_pat, Visitor};
 
 declare_clippy_lint! {
@@ -72,7 +72,7 @@ pub struct NonExpressiveNames {
 impl_lint_pass!(NonExpressiveNames => [SIMILAR_NAMES, MANY_SINGLE_CHAR_NAMES, JUST_UNDERSCORES_AND_DIGITS]);
 
 struct ExistingName {
-    interned: LocalInternedString,
+    interned: SymbolStr,
     span: Span,
     len: usize,
     whitelist: &'static [&'static str],
diff --git a/clippy_lints/src/path_buf_push_overwrite.rs b/clippy_lints/src/path_buf_push_overwrite.rs
index 464845c3c741..eee60e33bab6 100644
--- a/clippy_lints/src/path_buf_push_overwrite.rs
+++ b/clippy_lints/src/path_buf_push_overwrite.rs
@@ -50,7 +50,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for PathBufPushOverwrite {
             if let Some(get_index_arg) = args.get(1);
             if let ExprKind::Lit(ref lit) = get_index_arg.kind;
             if let LitKind::Str(ref path_lit, _) = lit.node;
-            if let pushed_path = Path::new(&path_lit.as_str());
+            if let pushed_path = Path::new(&*path_lit.as_str());
             if let Some(pushed_path_lit) = pushed_path.to_str();
             if pushed_path.has_root();
             if let Some(root) = pushed_path.components().next();
diff --git a/clippy_lints/src/unsafe_removed_from_name.rs b/clippy_lints/src/unsafe_removed_from_name.rs
index 528a1915be84..2f0e406b1a55 100644
--- a/clippy_lints/src/unsafe_removed_from_name.rs
+++ b/clippy_lints/src/unsafe_removed_from_name.rs
@@ -3,7 +3,7 @@ use rustc::lint::{EarlyContext, EarlyLintPass, LintArray, LintPass};
 use rustc::{declare_lint_pass, declare_tool_lint};
 use syntax::ast::*;
 use syntax::source_map::Span;
-use syntax::symbol::LocalInternedString;
+use syntax::symbol::SymbolStr;
 
 declare_clippy_lint! {
     /// **What it does:** Checks for imports that remove "unsafe" from an item's
@@ -73,6 +73,6 @@ fn unsafe_to_safe_check(old_name: Ident, new_name: Ident, cx: &EarlyContext<'_>,
 }
 
 #[must_use]
-fn contains_unsafe(name: &LocalInternedString) -> bool {
+fn contains_unsafe(name: &SymbolStr) -> bool {
     name.contains("Unsafe") || name.contains("unsafe")
 }
diff --git a/clippy_lints/src/utils/internal_lints.rs b/clippy_lints/src/utils/internal_lints.rs
index b5cd0d17f77d..1d1a3da6bc41 100644
--- a/clippy_lints/src/utils/internal_lints.rs
+++ b/clippy_lints/src/utils/internal_lints.rs
@@ -13,7 +13,7 @@ use rustc_data_structures::fx::{FxHashMap, FxHashSet};
 use rustc_errors::Applicability;
 use syntax::ast::{Crate as AstCrate, ItemKind, Name};
 use syntax::source_map::Span;
-use syntax_pos::symbol::LocalInternedString;
+use syntax_pos::symbol::SymbolStr;
 
 declare_clippy_lint! {
     /// **What it does:** Checks for various things we like to keep tidy in clippy.
@@ -112,7 +112,7 @@ impl EarlyLintPass for ClippyLintsInternal {
             if let ItemKind::Mod(ref utils_mod) = utils.kind {
                 if let Some(paths) = utils_mod.items.iter().find(|item| item.ident.name.as_str() == "paths") {
                     if let ItemKind::Mod(ref paths_mod) = paths.kind {
-                        let mut last_name: Option<LocalInternedString> = None;
+                        let mut last_name: Option<SymbolStr> = None;
                         for item in &*paths_mod.items {
                             let name = item.ident.as_str();
                             if let Some(ref last_name) = last_name {
@@ -279,8 +279,8 @@ declare_lint_pass!(OuterExpnDataPass => [OUTER_EXPN_EXPN_DATA]);
 impl<'a, 'tcx> LateLintPass<'a, 'tcx> for OuterExpnDataPass {
     fn check_expr(&mut self, cx: &LateContext<'a, 'tcx>, expr: &'tcx hir::Expr) {
         let (method_names, arg_lists, spans) = method_calls(expr, 2);
-        let method_names: Vec<LocalInternedString> = method_names.iter().map(|s| s.as_str()).collect();
-        let method_names: Vec<&str> = method_names.iter().map(std::convert::AsRef::as_ref).collect();
+        let method_names: Vec<SymbolStr> = method_names.iter().map(|s| s.as_str()).collect();
+        let method_names: Vec<&str> = method_names.iter().map(|s| &**s).collect();
         if_chain! {
             if let ["expn_data", "outer_expn"] = method_names.as_slice();
             let args = arg_lists[1];