diff options
| -rw-r--r-- | compiler/rustc_lint/src/levels.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_lint/src/levels.rs b/compiler/rustc_lint/src/levels.rs index 069fa41fa88..187e54154e3 100644 --- a/compiler/rustc_lint/src/levels.rs +++ b/compiler/rustc_lint/src/levels.rs @@ -576,7 +576,7 @@ pub fn is_known_lint_tool(m_item: Symbol, sess: &Session, attrs: &[ast::Attribut // NOTE: does no error handling; error handling is done by rustc_resolve. sess.filter_by_name(attrs, sym::register_tool) .filter_map(|attr| attr.meta_item_list()) - .flat_map(std::convert::identity) + .flatten() .filter_map(|nested_meta| nested_meta.ident()) .map(|ident| ident.name) .any(|name| name == m_item) |