self = <LinuxPIC cc=gcc>, returncode = 1, stdout = ''
stderr = '/tmp/usession-llvm-jit-backend-experimental-19/module_cache/module_1.c:91:10: fatal error: llvm-c/Core.h: No such file or directory\n   91 | #include <llvm-c/Core.h>\n      |          ^~~~~~~~~~~~~~~\ncompilation terminated.\n'
outname = local('/tmp/usession-llvm-jit-backend-experimental-19/module_cache/module_1.o')

    def _handle_error(self, returncode, stdout, stderr, outname):
        if returncode != 0:
            errorfile = outname.new(ext='errors')
            errorfile.write(stderr, 'wb')
            if self.log_errors:
                stderrlines = stderr.splitlines()
                for line in stderrlines:
                    log.Error(line)
                # ^^^ don't use ERROR, because it might actually be fine.
                # Also, ERROR confuses lib-python/conftest.py.
>           raise CompilationError(stdout, stderr)
E           CompilationError: CompilationError(err="""
E               /tmp/usession-llvm-jit-backend-experimental-19/module_cache/module_1.c:91:10: fatal error: llvm-c/Core.h: No such file or directory
E                  91 | #include <llvm-c/Core.h>
E                     |          ^~~~~~~~~~~~~~~
E               compilation terminated.
E               """)