diff options
Diffstat (limited to 'src/librustc_builtin_macros')
| -rw-r--r-- | src/librustc_builtin_macros/format.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/librustc_builtin_macros/format.rs b/src/librustc_builtin_macros/format.rs index 0684662b2bf..9092caef60a 100644 --- a/src/librustc_builtin_macros/format.rs +++ b/src/librustc_builtin_macros/format.rs @@ -359,7 +359,7 @@ impl<'a, 'b> Context<'a, 'b> { refs.sort(); refs.dedup(); let (arg_list, mut sp) = if refs.len() == 1 { - let spans: Vec<_> = spans.into_iter().filter_map(|sp| sp.map(|sp| *sp)).collect(); + let spans: Vec<_> = spans.into_iter().filter_map(|sp| sp.copied()).collect(); ( format!("argument {}", refs[0]), if spans.is_empty() { |