[rubygems/rubygems] Don't show bug report template when GEM_HOME has no writable bit
Instead, don't check that at all and proceed. If something fails to be written inside GEM_HOME, we'll eventually fail with a proper permissions error.
In addition to that, the writable bit in GEM_HOME is not even reliable, because only the immediate parent is actually checked when writing. For example,
[rubygems/rubygems] Don't show bug report template when GEM_HOME has no writable bit
Instead, don't check that at all and proceed. If something fails to be
written inside GEM_HOME, we'll eventually fail with a proper permissions
error.
In addition to that, the writable bit in GEM_HOME is not even reliable,
because only the immediate parent is actually checked when writing. For
example,
https://github.com/rubygems/rubygems/commit/4bced7ac73