File "/builds/da15siwa/pystencils/pystencils/cpu/cpujit.py", line 61, in <module> from pystencils.backends.cbackend import generate_c, get_headers File "/builds/da15siwa/pystencils/pystencils/backends/__init__.py", line 1, in <module> from .cbackend import generate_c File "/builds/da15siwa/pystencils/pystencils/backends/cbackend.py", line 23, in <module> from sympy.printing.ccode import CCodePrinter # for sympy versions < 1.1 ModuleNotFoundError: No module named 'sympy.printing.ccode' Cleaning up file based variables ERROR: Job failed: exit code 1