X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=compiler%2Frustc_typeck%2Fsrc%2Fcoherence%2Fbuiltin.rs;h=d08c0d4dbb72a6b5d12db254d92945dbca97d6bb;hb=e5356712b9ec90d6a0a38c99aea7e00e471227c5;hp=2467a81638f75bfa0828c61473d9cfde368154a3;hpb=b3f178350a44095e71306789da441ed785fae28c;p=rust.git

diff --git a/compiler/rustc_typeck/src/coherence/builtin.rs b/compiler/rustc_typeck/src/coherence/builtin.rs
index 2467a81638f..d08c0d4dbb7 100644
--- a/compiler/rustc_typeck/src/coherence/builtin.rs
+++ b/compiler/rustc_typeck/src/coherence/builtin.rs
@@ -359,7 +359,7 @@ pub fn coerce_unsized_info<'tcx>(tcx: TyCtxt<'tcx>, impl_did: DefId) -> CoerceUn
     let coerce_unsized_trait = tcx.require_lang_item(LangItem::CoerceUnsized, Some(span));
 
     let unsize_trait = tcx.lang_items().require(LangItem::Unsize).unwrap_or_else(|err| {
-        tcx.sess.fatal(&format!("`CoerceUnsized` implementation {}", err));
+        tcx.sess.fatal(&format!("`CoerceUnsized` implementation {}", err.to_string()));
     });
 
     let source = tcx.type_of(impl_did);