[Feature Request] [CI] Make all executors fail if one fails to speedup feedback and save money

[martinvuyk]

Review Mojo's priorities

• I have read the roadmap and priorities and I believe this request falls within the priorities.

What is your request?

Make all executors fail if one fails to speedup feedback and save money

What is your motivation for this change?

Waiting for all executors to be available when there are a lot of CIs running at the same time (and only some failed) saturates the available workers. If one fails, given the stdlib policy to not accept PRs that are failing, all executors should somehow receive a SIGTERM signal. This might be very annoying for cases like markdownlint failures, but that can be solved separately.

Any other details?

No response