Make Test fails

[Levike34]

running 'make test' gets me this error:

error[E0433]: failed to resolve: use of undeclared crate or module `imp`
  --> /home/levi/.cargo/registry/src/github.com-1ecc6299db9ec823/wait-timeout-0.2.0/src/lib.rs:66:9
   |
66 |         imp::wait_timeout(self, dur)
   |         ^^^ use of undeclared crate or module `imp`

For more information about this error, try `rustc --explain E0433`.
error: could not compile `wait-timeout` due to previous error

[deuszex]

Cannot repro currently. Usually trying with a newer rustc would help. Don't forget to make prepare first.