The new tests reused ports the existing suite already binds — 8095 with
ShouldSurviveAbuseHTTP1, and 8097/8098 with ShouldFallbackUnknownRoutes'
plaintext and HTTP/3 listeners. SO_REUSEADDR does not let two live
listeners share a port, so under the parallel runner whichever bound
second failed, and which test that was came down to scheduling. Move the
TLS tests to 8110-8114, which nothing else uses.
That collision also showed up as a SIGABRT rather than a reported error,
so harden the path it took: ~ListenerHTTP1 calls Stop(), which joins
threads and touches sockets and can therefore throw. A second listener
failing to bind unwinds past a live first one, and a throw out of its
destructor mid-unwind terminates the process — turning a diagnosable bind
failure into a crash. Swallow it there, where there is nothing left to
report it to.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>