- Fixes issue #923
- I fixed a race condition in `ConnectHandler.swift` where
an asynchronous network connection could complete
after the handler had already been removed from the
pipeline.
- This prevents the EXC_BREAKPOINT crash in
container-runtime-linux that occurred when kinc
(Kubernetes in Container) created rapid connections.
- The actual fix was inadvertently applied in #957, so this
PR contains only the test code.