1 files changed, 16 insertions, 16 deletions

diff --git a/crates/ra_hir_ty/src/diagnostics.rs b/crates/ra_hir_ty/src/diagnostics.rs
index 0b3e16ae7..56acd3bbf 100644
--- a/crates/ra_hir_ty/src/diagnostics.rs
+++ b/crates/ra_hir_ty/src/diagnostics.rs
@@ -33,8 +33,8 @@ pub struct NoSuchField {
 }
 
 impl Diagnostic for NoSuchField {
-    fn name(&self) -> String {
-        "no-such-field".to_string()
+    fn name(&self) -> &'static str {
+        "no-such-field"
     }
 
     fn message(&self) -> String {
@@ -68,8 +68,8 @@ pub struct MissingFields {
 }
 
 impl Diagnostic for MissingFields {
-    fn name(&self) -> String {
-        "missing-structure-fields".to_string()
+    fn name(&self) -> &'static str {
+        "missing-structure-fields"
     }
     fn message(&self) -> String {
         let mut buf = String::from("Missing structure fields:\n");
@@ -104,8 +104,8 @@ pub struct MissingPatFields {
 }
 
 impl Diagnostic for MissingPatFields {
-    fn name(&self) -> String {
-        "missing-pat-fields".to_string()
+    fn name(&self) -> &'static str {
+        "missing-pat-fields"
     }
     fn message(&self) -> String {
         let mut buf = String::from("Missing structure fields:\n");
@@ -130,8 +130,8 @@ pub struct MissingMatchArms {
 }
 
 impl Diagnostic for MissingMatchArms {
-    fn name(&self) -> String {
-        "missing-match-arm".to_string()
+    fn name(&self) -> &'static str {
+        "missing-match-arm"
     }
     fn message(&self) -> String {
         String::from("Missing match arm")
@@ -151,8 +151,8 @@ pub struct MissingOkInTailExpr {
 }
 
 impl Diagnostic for MissingOkInTailExpr {
-    fn name(&self) -> String {
-        "missing-ok-in-tail-expr".to_string()
+    fn name(&self) -> &'static str {
+        "missing-ok-in-tail-expr"
     }
     fn message(&self) -> String {
         "wrap return expression in Ok".to_string()
@@ -182,8 +182,8 @@ pub struct BreakOutsideOfLoop {
 }
 
 impl Diagnostic for BreakOutsideOfLoop {
-    fn name(&self) -> String {
-        "break-outside-of-loop".to_string()
+    fn name(&self) -> &'static str {
+        "break-outside-of-loop"
     }
     fn message(&self) -> String {
         "break outside of loop".to_string()
@@ -213,8 +213,8 @@ pub struct MissingUnsafe {
 }
 
 impl Diagnostic for MissingUnsafe {
-    fn name(&self) -> String {
-        "missing-unsafe".to_string()
+    fn name(&self) -> &'static str {
+        "missing-unsafe"
     }
     fn message(&self) -> String {
         format!("This operation is unsafe and requires an unsafe function or block")
@@ -246,8 +246,8 @@ pub struct MismatchedArgCount {
 }
 
 impl Diagnostic for MismatchedArgCount {
-    fn name(&self) -> String {
-        "mismatched-arg-count".to_string()
+    fn name(&self) -> &'static str {
+        "mismatched-arg-count"
     }
     fn message(&self) -> String {
         let s = if self.expected == 1 { "" } else { "s" };