error[E0408]: variable `v` is not bound in all patterns
  --> $DIR/tabs-trimming.rs:9:16
   |
LL | ...   v @ 1 | 2 | 3 => panic!("You gave me too little money {}", v), // Long text here: TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...
   |       -       ^   ^ pattern doesn't bind `v`
   |       |       |
   |       |       pattern doesn't bind `v`
   |       variable not in all patterns

error: aborting due to previous error

For more information about this error, try `rustc --explain E0408`.