Random test failure in GenerateThemeTest::testGeneratingFromAnotherThem

Interesting stuff going on in the multiple-time patches.

For one: Concurrency kills the cat, or at least the available disk-space, it can't handle 36 concurrent instances (the default Drupal CI-setting) copying the code-base for each single test in this test class, and runs out of it.

Secondly,

Failed to copy "/var/www/html/core/node_modules/debug/README.md"

looks like we're copying the core/node_modules, which isn't needed nor helpful IMHO. Opened 📌 Exclude copying 'core/node_modules' in getCodebaseFinder RTBC

Thirdly: Looking at the trace from the IS:

RecursiveDirectoryIterator::__construct(/builds/project/drupal/sites/simpletest/21880381/files/php/twig/6526592c2580b_node.editing.html.twig__RaNgLtlrqSCHFKI6weeKQxEy): Failed to open directory: No such file or directory

Why is the test trying to copy something from a directory that we explicitly (tried to?) excluded in the Iterator: sites/simpletest?

With 📌 Exclude copying 'core/node_modules' in getCodebaseFinder RTBC and a concurrency of 10 we can just about a 200x run out of this test.

Well, besides 200x being just around the limit (hence the massive amount of reruns due to DrupalCI timing out), there's just one failure in a teardown, which seems like a fluke.

Which is also what I'm going to label the original failure. Either or fluke or the FileIterator works differently on GitLab, which seems very unlikely.

With 📌 Exclude copying 'core/node_modules' in getCodebaseFinder RTBC , I've squeezed all out of this one that I can think off.

I've committed 📌 Exclude copying 'core/node_modules' in getCodebaseFinder RTBC . Moving this down to normal and needs more info until or if it shows up again.

Thanks @catch, let's see if this one shows up ever again.

There hasn't been any reports of this test failing here or in the parent issue in the last 1 yr 7 months. I think this can be closed.

Closing as a duplicate of 📌 Exclude copying 'core/node_modules' in getCodebaseFinder RTBC .