1 error[E0428]: the name `f` is defined multiple times
2 --> $DIR/test-compile-fail1.rs:8:1
5 | ---------- previous definition of the value `f` here
8 | ^^^^^^^^^^ `f` redefined here
10 = note: `f` must be defined only once in the value namespace of this module
12 error: aborting due to previous error
14 For more information about this error, try `rustc --explain E0428`.