Yeah, feels similar to Make concurrency bugs, where the makefile was developed with --jobs=1, and then years down the track someone says “let’s make it faster!” and tries --jobs=8 or similar, but that leads to compilation failures (or worse, succeeding in compiling the wrong thing), and because all the makefile was made years ago, it’s hard to track down exactly where the prerequisites are lacking; whereas if --jobs=8 had been used from the start, it would have been caught early.