> could anybody describe in details what went wrong?

By default, the HOME environment variable in the build environment is
set to /homeless-shelter, a non-existent directory. Some packages try to
access HOME to put temporary files or for some other reason. When they
find the HOME directory does not exist, they error out. Note the
following error message in your build log.

>>> Creating directory: Permission denied, /homeless-shelter

So, for such packages, we set HOME to /tmp, a directory that actually
exists in the build environment.