A bug is born
... and it's sneaky and slimy. Mr. Senior-been-doing-it-for-ears commits some half-assed shitty code, blames failed tests on availability of CI licenses. I decided to check what's causing this shit nevertheless, turns out he forgot to flag parts of the code consistently using his new compiler defines, and some parts would get compiled while others needed wouldn't .. Not a big deal, we all make mistakes, but he rushes to Teams chat directing a message to me (after some earlier non-sensible argument about merits of cherry picking vs re-base):
Now all tests pass, except ones that need CI license. The PR is done, you can use your preferred way to take my changes.

So after I spot those missing checks causing the tests to fail, as well as another bug in yet another test case, and yet another disastrous memory related bug, which weren't detected by the tests of course .. I ponder my options .. especially based on our history .. if I say anything he will get offended, or at best the PR will get delayed while he is in denial arguing back even longer and dependent tasks will get delayed and the rest of the team will be forced to watch this show in agony, he also just created a bottleneck putting so many things at stake in one PR ..

I am in a pickle here .. should I just put review comments and risk opening a can of worms, or should I just mention the very obvious bugs, or even should I do nothing .. I end up reaching for the PM and explained the situation. In complete denial, he still believes it's a license problem and goes on ranting about how another project suffering the same fate .. bla bla bla chipset ... bla bla bla project .. bla bla bla back in whatever team .. then only when I started telling him:
These issues are even spotted by "Bob" earlier, since for some reason you just dismissed whatever I just said ..
("Bob" is another more sane senior developer in the team, and speaks the same language as the PM)
Only now I get his attention! He then starts going through the issues with me (for some reason he thinks he is technical enough to get them) .. He now to some extent believes the first few obvious bugs .. now the more disastrous bug he is having really hard time wrapping his head around it .. Then the desperate I became, I suggest let's just get this PR merged for the sake of the other tasks after may be fixing the obvious issues and meanwhile we create another task to fix the bug later .. here he chips in:
You know what, that memory bug seems like a corner case, if it won't cause issues down the road after merging let's see if we need even to open an internal fix or defect for it later. Only customers can report bugs.

I am in awe how low the bar can get, I try again and suggest let's at least leave a comment for the next poor soul running into that bug so they won't be banging their heads in the wall 2hrs straight trying to figure out why store X isn't there unless you call something last or never call it or shit like that (the sneaky slimy nature of that memory bug) .. He even dismissed that and rather went on saying (almost literally again): It is just that Mr. Senior had to rush things and communication can be problematic sometimes .. (bla bla bla) back in "Sunken Ship Co." days, we had a team from open source community .. then he makes a very weird statement:
Stuff like what Richard Stallman writes in Linux kernel code reviews can offend people ..

Feeling too grossed and having weird taste in my mouth I only get in a bad hangover day, all sorts of swear words and profanity running in my head like a wild hungry squirrel on hot asphalt chasing a leaky chestnut transport ... I tell him whatever floats your boat but I just feel really sorry for whoever might have to deal with this bug in the future ..

I just witnessed the team giving birth to a sneaky slimy bug .. heard it screaming and saw it kicking .. and I might live enough to see it a grown up having a feast with other bug buddies in this stinky swamp of Uruk-hai piss and Orcs feces.