Trying to build an android project and I'm getting...

# coroutines

[Markchous]

Trying to build an android project and I'm getting this error:

Program type already present: kotlinx.coroutines.experimental.sync.MutexImpl$TryLockDesc$PrepareOp
Message{kind=ERROR, text=Program type already present: kotlinx.coroutines.experimental.sync.MutexImpl$TryLockDesc$PrepareOp, sources=[Unknown source file], tool name=Optional.of(D8)}

Any ideas? I'm at a lost.