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[E0381]: used binding `v` is possibly-uninitialized
  --> $DIR/tabs-trimming.rs:9:67
   |
LL | ...   v @ 1 | 2 | 3 => panic!("You gave me too little money {}", v), // Long text here: TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT...
   |       -                                                          ^ `v` used here but it is possibly-uninitialized
   |       |
   |       binding initialized here in some conditions
   |       binding declared here but left uninitialized
   |
   = note: this error originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0381, E0408.
For more information about an error, try `rustc --explain E0381`.