1 error[E0428]: the name `a` is defined multiple times
2 --> $DIR/issue-3099.rs:5:1
4 LL | fn a(x: String) -> String {
5 | ------------------------- previous definition of the value `a` here
7 LL | fn a(x: String, y: String) -> String {
8 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `a` redefined here
10 = note: `a` 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`.