mioco fails to build due to "can't leak private type"

[FlogramMatt]

We getting this error when compiling mioco on Rust1.24

private type src::sync::mpsc::ReceiverCore<T> in public interface --> /home/cooldude/.cargo/registry/src/github.com-1ecc6299db9ec823/mioco-0.8.1/src/sync/mpsc.rs:35:5 | 35 | type Raw = ReceiverCore<T>; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type

error[E0446]: private type src::timer::TimerCore in public interface --> /home/cooldude/.cargo/registry/src/github.com-1ecc6299db9ec823/mioco-0.8.1/src/timer.rs:47:5 | 47 | type Raw = TimerCore; | ^^^^^^^^^^^^^^^^^^^^^ can't leak private type

error: aborting due to 2 previous errors

error: Could not compile mioco.