232aaeba7c
This PR fixes an issues where rustc would ignore subsequent `#[diagnostic::on_unimplemented]` attributes. The [corresponding RFC](https://rust-lang.github.io/rfcs/3368-diagnostic-attribute-namespace.html) specifies that the first matching instance of each option is used. Invalid attributes are linted and otherwise ignored. |
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.. | ||
do_not_fail_parsing_on_invalid_options_1.rs | ||
do_not_fail_parsing_on_invalid_options_1.stderr | ||
feature-gate-diagnostic_on_unimplemented.rs | ||
feature-gate-diagnostic_on_unimplemented.stderr | ||
ignore_unsupported_options_and_continue_to_use_fallback.rs | ||
ignore_unsupported_options_and_continue_to_use_fallback.stderr | ||
on_unimplemented_simple.rs | ||
on_unimplemented_simple.stderr |