Coworker 1: "If I suspect a faulty USB cable, I immediately throw it away." Me:
"Oh, it's THAT bad?!" Coworker 2: "Where are you getting your cables from?! Talk
to $coworker, he has the best ones."

The worst part is that the tests suddenly started failing because of the
debugger getting disconnected, but I never touched the setup.

Cosmic rays are to blame, I guess.