Module rustc_lint::unused

source ·




  • The path_statements lint detects path statements with no effect.
  • The unused_allocation lint detects unnecessary allocations that can be eliminated.
  • The unused_braces lint detects unnecessary braces around an expression.
  • The unused_import_braces lint catches unnecessary braces around an imported item.
  • The unused_must_use lint detects unused result of a type flagged as #[must_use].
  • The unused_parens lint detects if, match, while and return with parentheses; they do not need them.
  • The unused_results lint checks for the unused result of an expression in a statement.


  • Used by both UnusedParens and UnusedBraces to prevent code duplication.