If the environment variable LC_ALL is set to 'en_US.utf8', three coding 
system related tests fail in bleeding-edge Emacs (commit 
51e3f91f50da43f18706410bf6cd096684379daa) when run on Ubuntu 22.10 with 
current patches. The problem goes away if LC_ALL is set to 'C', so this 
most likely has something to do with how Emacs reacts to the current locale.

Attached is the compressed output of 'make -j12 bootstrap && make -j12 
check'.