Test and build are things that fall through the cracks and working on them can get outright hostility from management and other team members in some places, indifference in others.

At one place I worked nobody could give me a reliable build procedure, I settled in on one that was 40 min and worked reliably. I complained at every team meeting about the slow build and nobody cared. I put in a ticket for the slow build and was asked “how does this help the end user?” and my answer was “if my build was faster the end user would have had the product six months ago”

Where I am now I have a “maintenance droid” that automates a mildly polyglot build and when it runs into trouble it applies various levels of cleaning and every few months I run into some problem where it gets different results from my supervisor and/or the CI system and these days it always turns out to be right.