This package has what appears to be a flaky test FTBFS, triggering
testing migration blocking.

Reporting this error separetly, but there are other flaky test FTBFS in
this package too: https://bugs.debian.org/1104400

https://ci.debian.net/packages/g/golang-github-lucas-clemente-quic-go/testing/ppc64el/76908196/#L5792

239s === RUN   TestConnDataBlocked
239s     packetization_test.go:220:
239s         	Error Trace:	/tmp/autopkgtest.ldGClE/autopkgtest_tmp/_build/src/github.com/quic-go/quic-go/integrationtests/self/packetization_test.go:220
239s         	            				/tmp/autopkgtest.ldGClE/autopkgtest_tmp/_build/src/github.com/quic-go/quic-go/integrationtests/self/packetization_test.go:139
239s         	Error:      	Not equal:
239s         	            	expected: 200
239s         	            	actual  : 0
239s         	Test:       	TestConnDataBlocked
239s --- FAIL: TestConnDataBlocked (0.04s)

/Simon