error[E0369]: cannot add `{integer}` to `&str`
  --> $DIR/issue-41394.rs:2:12
   |
LL |     A = "" + 1
   |         -- ^ - {integer}
   |         |
   |         &str

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0369`.