Bugs : php-amqplib package : Ubuntu

There is a flaky dep8 test in php-amqplib which has been constantly blocking a few php stack packages from migrating.

This is the error being triggered:

There was 1 failure:

1) PhpAmqpLib\Tests\Functional\Connection\Heartbeat\SIGHeartbeatSenderTest::alarm_sig_should_be_registered_when_conn_is_writing
Expectation failed for method name is “isConnected” when invoked 3 time(s).
Method was expected to be called 3 times, actually called 2 times.

I was able to reproduce the bug locally by reducing the test VM resources to use a single CPU.
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