Module rustc_lint::let_underscore

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  • The let_underscore_drop lint checks for statements which don’t bind an expression which has a non-trivial Drop implementation to anything, causing the expression to be dropped immediately instead of at end of scope.
  • The let_underscore_lock lint checks for statements which don’t bind a mutex to anything, causing the lock to be released immediately instead of at end of scope, which is typically incorrect.