Cloning Win* toolchains unstable in CI
Cloning Win* toolchains unstable in CI seems to be unstalbe on GHA. Perhaps the size of the repo is a hindrance. Look into submods as suggested here in the hope that smaller chunks of submods restore CI stability.
See also the option to cache, as is described here.
See also / Consider also caching.
My total on the toolchains is around/less-than 2GB, so caching seems like a viable option.
Consider an image for Ubuntu builds having ARM or AVR target(s). This could also be helpful for some other target builds such as V850/RL78/RX, as these GCC compiler(s) might be available as packages in older states of the compiler (which would be OK if they are old).
This remains unstable when cloning such large archives. Images or caches have not yet been implemented. Consider removing the nightly build until this gets improved.