error[E0130]: patterns aren't allowed in foreign function declarations --> $DIR/no-patterns-in-args.rs:2:11 | LL | fn f1(mut arg: u8); | ^^^^^^^ pattern not allowed in foreign function error[E0130]: patterns aren't allowed in foreign function declarations --> $DIR/no-patterns-in-args.rs:3:11 | LL | fn f2(&arg: u8); | ^^^^ pattern not allowed in foreign function error[E0130]: patterns aren't allowed in foreign function declarations --> $DIR/no-patterns-in-args.rs:4:11 | LL | fn f3(arg @ _: u8); | ^^^^^^^ pattern not allowed in foreign function error[E0561]: patterns aren't allowed in function pointer types --> $DIR/no-patterns-in-args.rs:10:14 | LL | type A1 = fn(mut arg: u8); | ^^^^^^^ error[E0561]: patterns aren't allowed in function pointer types --> $DIR/no-patterns-in-args.rs:11:14 | LL | type A2 = fn(&arg: u8); | ^^^^ error: aborting due to 5 previous errors For more information about this error, try `rustc --explain E0130`.