1 error[E0632]: cannot provide explicit generic arguments when `impl Trait` is used in argument position
2 --> $DIR/universal-issue-48703.rs:8:11
4 LL | foo::<String>('a');
5 | ^^^^^^ explicit generic argument not allowed
7 error: aborting due to previous error
9 For more information about this error, try `rustc --explain E0632`.