Regtest functional test has been failing for months

[NotATether]

Looks like the master branch of Electrum is failing some sort of regtest check: https://github.com/spesmilo/electrum/runs/4656508414?check_suite_focus=true

The more worrying thing is that there haven't been any commits since Dec 19 last year and the number of pull requests are piling up.

My own merge for a restore-sync command has been stalling for over a month without any comments. There is even some obvious spam at the top of the PRs list.

So what I was trying to ask is what is the nature of this kind of test failure, so maybe I can go submit a patch for it?

[pooya87]

Sometimes CIs cause problems like this with some tests. Usually restarting the same run fixes the issue so this may be a problem with Cirrus CI or the script used to run it.
There is a similar PR that argues the same: https://github.com/spesmilo/electrum/pull/7609

Other than that, you have to debug electrum/tests/regtest.py and see where are things going wrong.