warning: the feature `capture_disjoint_fields` is incomplete and may not be safe to use and/or cause compiler crashes
  --> $DIR/liveness.rs:2:12
   |
LL | #![feature(capture_disjoint_fields)]
   |            ^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[warn(incomplete_features)]` on by default
   = note: see issue #53488 <https://github.com/rust-lang/rust/issues/53488> for more information

warning: value captured by `a` is never read
  --> $DIR/liveness.rs:23:9
   |
LL |         a = 1;
   |         ^
   |
note: the lint level is defined here
  --> $DIR/liveness.rs:5:9
   |
LL | #![warn(unused)]
   |         ^^^^^^
   = note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]`
   = help: did you mean to capture by reference instead?

warning: unused variable: `a`
  --> $DIR/liveness.rs:32:9
   |
LL |         a += 1;
   |         ^
   |
note: the lint level is defined here
  --> $DIR/liveness.rs:5:9
   |
LL | #![warn(unused)]
   |         ^^^^^^
   = note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
   = help: did you mean to capture by reference instead?

warning: value assigned to `a` is never read
  --> $DIR/liveness.rs:52:9
   |
LL |         a += 1;
   |         ^
   |
   = help: maybe it is overwritten before being read?

warning: value assigned to `a` is never read
  --> $DIR/liveness.rs:76:13
   |
LL |             a = Some("d1");
   |             ^
   |
   = help: maybe it is overwritten before being read?

warning: value assigned to `b` is never read
  --> $DIR/liveness.rs:84:13
   |
LL |             b = Some("e1");
   |             ^
   |
   = help: maybe it is overwritten before being read?

warning: value assigned to `b` is never read
  --> $DIR/liveness.rs:86:13
   |
LL |             b = Some("e2");
   |             ^
   |
   = help: maybe it is overwritten before being read?

warning: unused variable: `b`
  --> $DIR/liveness.rs:84:13
   |
LL |             b = Some("e1");
   |             ^
   |
   = help: did you mean to capture by reference instead?

warning: 8 warnings emitted