1 error[E0642]: patterns aren't allowed in functions without bodies
2 --> $DIR/no-patterns-in-args-2.rs:6:11
5 | ^^^^ pattern not allowed in function without body
7 error: patterns aren't allowed in functions without bodies
8 --> $DIR/no-patterns-in-args-2.rs:4:11
10 LL | fn f1(mut arg: u8);
11 | ^^^^^^^ help: remove `mut` from the parameter: `arg`
13 = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
14 = note: for more information, see issue #35203 <https://github.com/rust-lang/rust/issues/35203>
15 note: the lint level is defined here
16 --> $DIR/no-patterns-in-args-2.rs:1:9
18 LL | #![deny(patterns_in_fns_without_body)]
19 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
21 error: aborting due to 2 previous errors
23 For more information about this error, try `rustc --explain E0642`.