Tweak "non-primitive cast" error

[rust.git] / src / libcore / convert / mod.rs

diff --git a/src/libcore/convert/mod.rs b/src/libcore/convert/mod.rs
index eef9ee7cb0093d811e92c6d3f5b9034e6ffc83e8..8ff1ced53b071840f45edad5e3c3184804fb90c2 100644 (file)
--- a/src/libcore/convert/mod.rs
+++ b/src/libcore/convert/mod.rs
@@ -374,6 +374,7 @@ pub trait Into<T>: Sized {
 /// [`Into`]: trait.Into.html
 /// [`from`]: trait.From.html#tymethod.from
 /// [book]: ../../book/ch09-00-error-handling.html
+#[rustc_diagnostic_item = "from_trait"]
 #[stable(feature = "rust1", since = "1.0.0")]
 #[rustc_on_unimplemented(on(
     all(_Self = "&str", T = "std::string::String"),