error[E0384]: cannot assign twice to immutable variable `v`
  --> $DIR/liveness-assign-imm-local-in-loop.rs:6:9
   |
LL |     let v: isize;
   |         - help: consider making this binding mutable: `mut v`
...
LL |         v = 1;
   |         ^^^^^ cannot assign twice to immutable variable

error: aborting due to previous error

For more information about this error, try `rustc --explain E0384`.