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Add help for E0463

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This commit is contained in:
Guillaume Gomez 2021-09-10 20:20:10 +02:00
parent 1c858ba5bf
commit c9a56cdc58
1 changed files with 5 additions and 0 deletions
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5
compiler/rustc_metadata/src/locator.rs
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@ -1095,6 +1095,11 @@ impl CrateError {
== Symbol::intern(&sess.opts.debugging_opts.profiler_runtime)
{
err.note(&"the compiler may have been built without the profiler runtime");
} else if crate_name.as_str().starts_with("rustc_") {
err.help(
"maybe you need to install the missing components with: \
`rustup component add rust-src rustc-dev llvm-tools-preview`",
);
}
err.span_label(span, "can't find crate");
err