I am trying to install IO::Async::Listener under cygwin but see the following failures: 

cpan[2]> install IO::Async::Listener
Running install for module 'IO::Async::Listener'
  PEVANS/IO-Async-0.77.tar.gz
  Has already been unwrapped into directory /home/User/.local/share/.c
+pan/build/IO-Async-0.77-5
  PEVANS/IO-Async-0.77.tar.gz
  Has already been prepared
  PEVANS/IO-Async-0.77.tar.gz
  Has already been made
Running Build test for PEVANS/IO-Async-0.77.tar.gz
t/00use.t .................... ok
t/01timequeue.t .............. ok
t/02os.t ..................... ok
t/03loop-magic.t ............. ok
t/04notifier.t ............... ok
t/05notifier-loop.t .......... ok
t/06notifier-mixin.t ......... ok
t/07notifier-future.t ........ ok
t/10loop-poll-io.t ........... 1/?
#   Failed test 'exceptional socket invokes on_read_ready'
#   at /home/User/.local/share/.cpan/build/IO-Async-0.77-5/blib/lib/IO
+/Async/LoopTests.pm line 387.
#          got: '0'
#     expected: '1'
# Looks like you failed 1 test of 22.
t/10loop-poll-io.t ........... Dubious, test returned 1 (wstat 256, 0x
+100)
Failed 1/22 subtests
        (less 2 skipped subtests: 19 okay)
t/10loop-select-io.t ......... 1/?
#   Failed test 'exceptional socket invokes on_read_ready'
#   at /home/User/.local/share/.cpan/build/IO-Async-0.77-5/blib/lib/IO
+/Async/LoopTests.pm line 387.
#          got: '0'
#     expected: '1'
# Looks like you failed 1 test of 22.
t/10loop-select-io.t ......... Dubious, test returned 1 (wstat 256, 0x
+100)
Failed 1/22 subtests
        (less 2 skipped subtests: 19 okay)
t/11loop-poll-timer.t ........ ok
t/11loop-select-timer.t ...... ok
t/12loop-poll-signal.t ....... ok
t/12loop-select-signal.t ..... ok
t/13loop-poll-idle.t ......... ok
t/13loop-select-idle.t ....... ok
t/14loop-poll-process.t ...... ok
t/14loop-select-process.t .... ok
t/15loop-poll-control.t ...... ok
t/15loop-select-control.t .... ok
t/16loop-poll-metrics.t ...... ok
t/16loop-select-metrics.t .... ok
t/18loop-poll-legacy.t ....... ok
t/18loop-select-legacy.t ..... ok
t/19loop-future.t ............ ok
t/19test.t ................... ok
t/20handle.t ................. ok
t/21stream-1read.t ........... ok
t/21stream-2write.t .......... ok
t/21stream-3split.t .......... ok
t/21stream-4encoding.t ....... ok
t/22timer-absolute.t ......... ok
t/22timer-countdown.t ........ ok
t/22timer-periodic.t ......... ok
t/23signal.t ................. ok
t/24listener.t ............... ok
t/25socket.t ................. ok
t/26pid.t .................... ok
t/27file.t ................... ok
t/28filestream.t ............. ok
t/30loop-fork.t .............. ok
t/31loop-spawnchild.t ........ ok
t/32loop-spawnchild-setup.t .. ok
t/33process.t ................ ok
t/34process-handles.t ........ ok
t/35loop-openprocess.t ....... ok
t/36loop-runchild.t .......... ok
t/37loop-child-root.t ........ skipped: not root
t/38loop-thread.t ............ ok
t/39loop-runproccess.t ....... ok
t/40channel.t ................ ok
t/41routine.t ................ ok
t/42function.t ............... 1/? Warning: unable to close filehandle
+ $wr properly: Bad file descriptor during global destruction.
Warning: unable to close filehandle $wr properly: Bad file descriptor 
+during global destruction.
Warning: unable to close filehandle $out properly: Bad file descriptor
+ during global destruction.
Warning: unable to close filehandle $out properly: Bad file descriptor
+ during global destruction.
Warning: unable to close filehandle properly: Bad file descriptor duri
+ng global destruction.
Warning: unable to close filehandle properly: Bad file descriptor duri
+ng global destruction.
t/42function.t ............... ok
t/50resolver.t ............... 1/?
#   Failed test '->failure [3] gives EAI_NONAME or EAI_NODATA'
#   at t/50resolver.t line 342.
# $errno is 2
# Looks like you failed 1 test of 35.
t/50resolver.t ............... Dubious, test returned 1 (wstat 256, 0x
+100)
Failed 1/35 subtests
t/51loop-connect.t ........... ok
t/52loop-listen.t ............ ok
t/53loop-extend.t ............ ok
t/60protocol.t ............... ok
t/61protocol-stream.t ........ ok
t/62protocol-linestream.t .... ok
t/63handle-connect.t ......... ok
t/64handle-bind.t ............ ok
t/70future-io.t .............. skipped: Future::IO is not available
t/99pod.t .................... ok

Test Summary Report
-------------------
t/10loop-poll-io.t         (Wstat: 256 Tests: 22 Failed: 1)
  Failed test:  19
  Non-zero exit status: 1
t/10loop-select-io.t       (Wstat: 256 Tests: 22 Failed: 1)
  Failed test:  19
  Non-zero exit status: 1
t/50resolver.t             (Wstat: 256 Tests: 35 Failed: 1)
  Failed test:  28
  Non-zero exit status: 1
Files=64, Tests=1668, 119 wallclock secs ( 0.28 usr  0.30 sys +  7.79 
+cusr  9.73 csys = 18.10 CPU)
Result: FAIL
Failed 3/64 test programs. 3/1668 subtests failed.
  PEVANS/IO-Async-0.77.tar.gz
  ./Build test -- NOT OK
//hint// to see the cpan-testers results for installing this module, t
+ry:
  reports PEVANS/IO-Async-0.77.tar.gz
Failed during this command:
 PEVANS/IO-Async-0.77.tar.gz                  : make_test NO

[download]

How do I debug this? Searching for "Failed test 'exceptional socket invokes on_read_ready'" does return an open bug related to cygwin (https://rt.cpan.org/Public/Bug/Display.html?id=71706) although the reporter never replied back indicating whether or not they still see the same issue with the version referenced by the author (0.61), which is quit a bit older than the most recent version (0.77). Is there anything obvious I can do to debug this further other than contacting the author?

In reply to help debugging why module install is failing by Special_K

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