Description:

Running emcc -v gives me a output:
Traceback (most recent call last):
File "/usr/lib/emscripten/emcc.py", line 42, in <module>
import emscripten
File "/usr/lib/emscripten/emscripten.py", line 25, in <module>
from tools import shared
File "/usr/lib/emscripten/tools/shared.py", line 3501, in <module>
check_vanilla()
File "/usr/lib/emscripten/tools/shared.py", line 660, in check_vanilla
is_vanilla_file = temp_cache.get('is_vanilla.txt', get_vanilla_file)
File "/usr/lib/emscripten/tools/cache.py", line 110, in get
self.acquire_cache_lock()
File "/usr/lib/emscripten/tools/cache.py", line 60, in acquire_cache_lock
self.filelock.acquire(60)
File "/usr/lib/emscripten/tools/filelock.py", line 240, in acquire
self._acquire()
File "/usr/lib/emscripten/tools/filelock.py", line 360, in _acquire
fd = os.open(self._lock_file, open_mode)
PermissionError: [Errno 13] Permission denied: '/usr/lib/emscripten/cache.lock'

It seems that emscripten tries to create lock file in the installation directory instead of in users home directory as it should.
Downgrading it to version 1.39.11-1 evereything works fine. I'm not sure that this is the last version that works fine, but this is the only one I have that works OK.

Additional info:
* package version: 1.39.16-2

Steps to reproduce:
Run as regular user:
emcc -v