test_justintime fails in locally (ArchLinux) but not in CI

Created originally on Bitbucket by avmo (Ashwin Vishnu)

Error log

❯❯❯ pytest transonic/test_justintime.py                                                                                                               (gfdyn)
================================================================================== test session starts ==================================================================================
platform linux -- Python 3.7.2, pytest-4.1.1, py-1.7.0, pluggy-0.7.1
rootdir: /home/avmo/src/gfdyn/transonic, inifile:
plugins: xdist-1.26.0, forked-0.2, cov-2.6.1
collected 4 items

transonic/test_justintime.py ...F                                                                                                                                                 [100%]

======================================================================================= FAILURES ========================================================================================
____________________________________________________________________________________ test_jit_method ____________________________________________________________________________________

    def test_jit_method():
        from .for_test_justintime import MyClass

        obj = MyClass()
        obj.check()

        if not pythran:
            return

        obj = MyClass()
        obj.check()

        wait_for_all_extensions()

>       obj.check()

transonic/test_justintime.py:133:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
transonic/for_test_justintime.py:55: in check
    assert self.myfunc(1) == 3
../../../.transonic/__jit_classes__/transonic/for_test_justintime/MyClass.py:12: in __new_method__MyClass__myfunc
    return __for_method__MyClass__myfunc(self.attr0, self.attr1, arg)
transonic/justintime.py:403: in type_collector
    self.path_extension, name_mod
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

path = PosixPath('/home/avmo/.transonic/__jit__/__jit_classes__/transonic/for_test_justintime/MyClass/__for_method__MyClass__myfunc_1a561a32e66dbed370c2ca73ad4a8e16_cc85ed47cd216c9460058222831d443a.cpython-37m-x86_64-linux-gnu.so')


    def import_from_path(path: Path, module_name: str):
        """Import a .py file or an extension from its path

        """
        if not path.exists():
            raise ImportError(
>               f"File {path} does not exist. "
                f"[path.name for path in path.parent.glob('*')]:\n{[path.name for path in path.parent.glob('*')]}\n"
            )
E           ImportError: File /home/avmo/.transonic/__jit__/__jit_classes__/transonic/for_test_justintime/MyClass/__for_method__MyClass__myfunc_1a561a32e66dbed370c2ca73ad4a8e16_cc85ed47cd216c9460058222831d443a.cpython-37m-x86_64-linux-gnu.so does not exist. [path.name for path in path.parent.glob('*')]:
E           ['__for_method__MyClass__myfunc.py', '__for_method__MyClass__myfunc.pythran']

transonic/util.py:240: ImportError
--------------------------------------------------------------------------------- Captured stdout call ----------------------------------------------------------------------------------
Pythranizing /home/avmo/.transonic/__jit__/__jit_classes__/transonic/for_test_justintime/MyClass/__for_method__MyClass__myfunc.py
--------------------------------------------------------------------------------- Captured stderr call ----------------------------------------------------------------------------------
INFO     Schedule pythranization of file /home/avmo/.transonic/__jit__/__jit_classes__/transonic/for_test_justintime/MyClass/__for_method__MyClass__myfunc.py
INFO          sys file exists: /scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/pythran.cfg
INFO     platform file exists: /scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/pythran-linux.cfg
INFO         user file exists: /home/avmo/.pythranrc
INFO     pythranrc section [pythran] is valid and options are correct
INFO     pythranrc section [typing] is valid and options are correct
INFO     pythranrc section [compiler] is valid and options are correct
Traceback (most recent call last):
  File "/scratch/avmo/opt/gfdyn/bin/pythran", line 11, in <module>
    sys.exit(run())
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/run.py", line 166, in run
    **compile_flags(args))
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/toolchain.py", line 469, in compile_pythranfile
    **kwargs)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/toolchain.py", line 394, in compile_pythrancode
    module_dir)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/toolchain.py", line 141, in generate_cxx
    optimizations, module_dir)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/toolchain.py", line 109, in front_middle_end
    refine(pm, ir, optimizations)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/middlend.py", line 22, in refine
    pm.apply(ExpandBuiltins, node)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/passmanager.py", line 218, in apply

    res = a.apply(node, ctx)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/passmanager.py", line 179, in apply
    new_node = self.run(node, ctx)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/passmanager.py", line 172, in run
    n = super(Transformation, self).run(node, ctx)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/passmanager.py", line 115, in run
    return self.visit(node)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/passmanager.py", line 81, in visit
    return super(ContextManager, self).visit(node)
  File "/usr/lib64/python3.7/ast.py", line 262, in visit
    return visitor(node)
  File "/usr/lib64/python3.7/ast.py", line 317, in generic_visit
    value = self.visit(value)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/passmanager.py", line 81, in visit
    return super(ContextManager, self).visit(node)
  File "/usr/lib64/python3.7/ast.py", line 262, in visit
    return visitor(node)
  File "/usr/lib64/python3.7/ast.py", line 317, in generic_visit
    value = self.visit(value)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/passmanager.py", line 81, in visit
    return super(ContextManager, self).visit(node)
  File "/usr/lib64/python3.7/ast.py", line 262, in visit
    return visitor(node)
  File "/scratch/avmo/opt/gfdyn/lib/python3.7/site-packages/pythran/transformations/expand_builtins.py", line 39, in visit_Name
    s not in self.locals[node] and
KeyError: <gast.gast.Name object at 0x7fcfe28d0c50>
Error! File /home/avmo/.transonic/__jit__/__jit_classes__/transonic/for_test_justintime/MyClass/__for_method__MyClass__myfunc_1a561a32e66dbed370c2ca73ad4a8e16_cc85ed47cd216c9460058222831d443a.cpython-37m-x86_64-linux-gnu.so has not been created by Pythran
----------------------------------------------------------------------------------- Captured log call -----------------------------------------------------------------------------------
pythranizer.py             156 INFO     Schedule pythranization of file /home/avmo/.transonic/__jit__/__jit_classes__/transonic/for_test_justintime/MyClass/__for_method__MyClass__myfunc.py