this derivation will be built:
  /nix/store/f1rf8wp57pz8xgac2pj42i0azl9rnsy0-nix-eval-jobs-functional-tests.drv
building '/nix/store/f1rf8wp57pz8xgac2pj42i0azl9rnsy0-nix-eval-jobs-functional-tests.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/f1rf8wp57pz8xgac2pj42i0azl9rnsy0-nix-eval-jobs-functional-tests.drv'
nix-eval-jobs-functional-tests> ============================= test session starts ==============================
nix-eval-jobs-functional-tests> platform darwin -- Python 3.13.9, pytest-8.4.2, pluggy-1.6.0 -- /nix/store/xcjk9ill54kjk8mzgq6yydnx9015lidg-python3-3.13.9/bin/python3.13
nix-eval-jobs-functional-tests> cachedir: .pytest_cache
nix-eval-jobs-functional-tests> rootdir: /nix/var/nix/builds/nix-49230-3361655361
nix-eval-jobs-functional-tests> collected 23 items                                                             
nix-eval-jobs-functional-tests> 
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_flake PASSED                         [  4%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_query_cache_status PASSED            [  8%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_expression PASSED                    [ 13%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_input_drvs PASSED                    [ 17%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_eval_error PASSED                    [ 21%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_no_gcroot_dir PASSED                 [ 26%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_daemon_only_settings_do_not_warn PASSED [ 30%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_constituents PASSED                  [ 34%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_constituents_all PASSED              [ 39%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_constituents_glob_misc PASSED        [ 43%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_constituents_cycle PASSED            [ 47%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_constituents_error PASSED            [ 52%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_empty_needed PASSED                  [ 56%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_apply PASSED                         [ 60%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_select_flake PASSED                  [ 65%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_recursion_error PASSED               [ 69%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_no_instantiate_mode PASSED           [ 73%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_fod_with_uncached_input_issue413[file] PASSED [ 78%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_fod_with_uncached_input_issue413[http] PASSED [ 82%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_worker_log_format_survives_fork PASSED [ 86%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_worker_restart_on_last_job_exits_cleanly PASSED [ 91%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_fetchers_survive_worker_restart PASSED [ 95%]
nix-eval-jobs-functional-tests> tests-functional/test_eval.py::test_workers_do_not_race_flake_fetch FAILED [100%]
nix-eval-jobs-functional-tests> 
nix-eval-jobs-functional-tests> =================================== FAILURES ===================================
nix-eval-jobs-functional-tests> _____________________ test_workers_do_not_race_flake_fetch _____________________
nix-eval-jobs-functional-tests> 
nix-eval-jobs-functional-tests> tmp_path = PosixPath('/nix/var/nix/builds/nix-49230-3361655361/pytest-of-_nixbld1/pytest-0/test_workers_do_not_race_flake0')
nix-eval-jobs-functional-tests> 
nix-eval-jobs-functional-tests>     def test_workers_do_not_race_flake_fetch(tmp_path: Path) -> None:
nix-eval-jobs-functional-tests>         """Workers fetching the same flake input concurrently spam "waiting
nix-eval-jobs-functional-tests>         for another Nix process to finish fetching input" (issue #432)."""
nix-eval-jobs-functional-tests>         env = _hermetic_nix_env(tmp_path)
nix-eval-jobs-functional-tests>         repo = tmp_path / "flake"
nix-eval-jobs-functional-tests>         repo.mkdir()
nix-eval-jobs-functional-tests>         jobs = "\n".join(
nix-eval-jobs-functional-tests>             f"""
nix-eval-jobs-functional-tests>             job-{i} = derivation {{
nix-eval-jobs-functional-tests>               name = "race-{i}";
nix-eval-jobs-functional-tests>               system = "x86_64-linux";
nix-eval-jobs-functional-tests>               builder = "/bin/sh";
nix-eval-jobs-functional-tests>               args = [ "-c" "echo {i} > $out" ]; }};"""
nix-eval-jobs-functional-tests>             for i in range(8)
nix-eval-jobs-functional-tests>         )
nix-eval-jobs-functional-tests>         repo.joinpath("flake.nix").write_text(f"{{ outputs = _: {{ hydraJobs = {{ {jobs} }}; }}; }}")
nix-eval-jobs-functional-tests> >       subprocess.run(["git", "init", "-q"], cwd=repo, check=True, env=env)
nix-eval-jobs-functional-tests> 
nix-eval-jobs-functional-tests> tests-functional/test_eval.py:875: 
nix-eval-jobs-functional-tests> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
nix-eval-jobs-functional-tests> /nix/store/xcjk9ill54kjk8mzgq6yydnx9015lidg-python3-3.13.9/lib/python3.13/subprocess.py:554: in run
nix-eval-jobs-functional-tests>     with Popen(*popenargs, **kwargs) as process:
nix-eval-jobs-functional-tests>          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
nix-eval-jobs-functional-tests> /nix/store/xcjk9ill54kjk8mzgq6yydnx9015lidg-python3-3.13.9/lib/python3.13/subprocess.py:1039: in __init__
nix-eval-jobs-functional-tests>     self._execute_child(args, executable, preexec_fn, close_fds,
nix-eval-jobs-functional-tests> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 
nix-eval-jobs-functional-tests> 
nix-eval-jobs-functional-tests> self = <Popen: returncode: 255 args: ['git', 'init', '-q']>
nix-eval-jobs-functional-tests> args = ['git', 'init', '-q'], executable = b'git', preexec_fn = None
nix-eval-jobs-functional-tests> close_fds = True, pass_fds = ()
nix-eval-jobs-functional-tests> cwd = PosixPath('/nix/var/nix/builds/nix-49230-3361655361/pytest-of-_nixbld1/pytest-0/test_workers_do_not_race_flake0/flake')
nix-eval-jobs-functional-tests> env = {'CONFIG_SHELL': '/nix/store/p0k9r5h8qs7220xdbdihhfgzwjcly70x-bash-5.3p3/bin/bash', 'DETERMINISTIC_BUILD': '1', 'GZIP_...OME': '/nix/var/nix/builds/nix-49230-3361655361/pytest-of-_nixbld1/pytest-0/test_workers_do_not_race_flake0/home', ...}
nix-eval-jobs-functional-tests> startupinfo = None, creationflags = 0, shell = False, p2cread = -1
nix-eval-jobs-functional-tests> p2cwrite = -1, c2pread = -1, c2pwrite = -1, errread = -1, errwrite = -1
nix-eval-jobs-functional-tests> restore_signals = True, gid = None, gids = None, uid = None, umask = -1
nix-eval-jobs-functional-tests> start_new_session = False, process_group = -1
nix-eval-jobs-functional-tests> 
nix-eval-jobs-functional-tests>     def _execute_child(self, args, executable, preexec_fn, close_fds,
nix-eval-jobs-functional-tests>                        pass_fds, cwd, env,
nix-eval-jobs-functional-tests>                        startupinfo, creationflags, shell,
nix-eval-jobs-functional-tests>                        p2cread, p2cwrite,
nix-eval-jobs-functional-tests>                        c2pread, c2pwrite,
nix-eval-jobs-functional-tests>                        errread, errwrite,
nix-eval-jobs-functional-tests>                        restore_signals,
nix-eval-jobs-functional-tests>                        gid, gids, uid, umask,
nix-eval-jobs-functional-tests>                        start_new_session, process_group):
nix-eval-jobs-functional-tests>         """Execute program (POSIX version)"""
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>         if isinstance(args, (str, bytes)):
nix-eval-jobs-functional-tests>             args = [args]
nix-eval-jobs-functional-tests>         elif isinstance(args, os.PathLike):
nix-eval-jobs-functional-tests>             if shell:
nix-eval-jobs-functional-tests>                 raise TypeError('path-like args is not allowed when '
nix-eval-jobs-functional-tests>                                 'shell is true')
nix-eval-jobs-functional-tests>             args = [args]
nix-eval-jobs-functional-tests>         else:
nix-eval-jobs-functional-tests>             args = list(args)
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>         if shell:
nix-eval-jobs-functional-tests>             # On Android the default shell is at '/system/bin/sh'.
nix-eval-jobs-functional-tests>             unix_shell = ('/system/bin/sh' if
nix-eval-jobs-functional-tests>                       hasattr(sys, 'getandroidapilevel') else '/nix/store/p0k9r5h8qs7220xdbdihhfgzwjcly70x-bash-5.3p3/bin/sh')
nix-eval-jobs-functional-tests>             args = [unix_shell, "-c"] + args
nix-eval-jobs-functional-tests>             if executable:
nix-eval-jobs-functional-tests>                 args[0] = executable
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>         if executable is None:
nix-eval-jobs-functional-tests>             executable = args[0]
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>         sys.audit("subprocess.Popen", executable, args, cwd, env)
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>         if (_USE_POSIX_SPAWN
nix-eval-jobs-functional-tests>                 and os.path.dirname(executable)
nix-eval-jobs-functional-tests>                 and preexec_fn is None
nix-eval-jobs-functional-tests>                 and (not close_fds or _HAVE_POSIX_SPAWN_CLOSEFROM)
nix-eval-jobs-functional-tests>                 and not pass_fds
nix-eval-jobs-functional-tests>                 and cwd is None
nix-eval-jobs-functional-tests>                 and (p2cread == -1 or p2cread > 2)
nix-eval-jobs-functional-tests>                 and (c2pwrite == -1 or c2pwrite > 2)
nix-eval-jobs-functional-tests>                 and (errwrite == -1 or errwrite > 2)
nix-eval-jobs-functional-tests>                 and not start_new_session
nix-eval-jobs-functional-tests>                 and process_group == -1
nix-eval-jobs-functional-tests>                 and gid is None
nix-eval-jobs-functional-tests>                 and gids is None
nix-eval-jobs-functional-tests>                 and uid is None
nix-eval-jobs-functional-tests>                 and umask < 0):
nix-eval-jobs-functional-tests>             self._posix_spawn(args, executable, env, restore_signals, close_fds,
nix-eval-jobs-functional-tests>                               p2cread, p2cwrite,
nix-eval-jobs-functional-tests>                               c2pread, c2pwrite,
nix-eval-jobs-functional-tests>                               errread, errwrite)
nix-eval-jobs-functional-tests>             return
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>         orig_executable = executable
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>         # For transferring possible exec failure from child to parent.
nix-eval-jobs-functional-tests>         # Data format: "exception name:hex errno:description"
nix-eval-jobs-functional-tests>         # Pickle is not used; it is complex and involves memory allocation.
nix-eval-jobs-functional-tests>         errpipe_read, errpipe_write = os.pipe()
nix-eval-jobs-functional-tests>         # errpipe_write must not be in the standard io 0, 1, or 2 fd range.
nix-eval-jobs-functional-tests>         low_fds_to_close = []
nix-eval-jobs-functional-tests>         while errpipe_write < 3:
nix-eval-jobs-functional-tests>             low_fds_to_close.append(errpipe_write)
nix-eval-jobs-functional-tests>             errpipe_write = os.dup(errpipe_write)
nix-eval-jobs-functional-tests>         for low_fd in low_fds_to_close:
nix-eval-jobs-functional-tests>             os.close(low_fd)
nix-eval-jobs-functional-tests>         try:
nix-eval-jobs-functional-tests>             try:
nix-eval-jobs-functional-tests>                 # We must avoid complex work that could involve
nix-eval-jobs-functional-tests>                 # malloc or free in the child process to avoid
nix-eval-jobs-functional-tests>                 # potential deadlocks, thus we do all this here.
nix-eval-jobs-functional-tests>                 # and pass it to fork_exec()
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>                 if env is not None:
nix-eval-jobs-functional-tests>                     env_list = []
nix-eval-jobs-functional-tests>                     for k, v in env.items():
nix-eval-jobs-functional-tests>                         k = os.fsencode(k)
nix-eval-jobs-functional-tests>                         if b'=' in k:
nix-eval-jobs-functional-tests>                             raise ValueError("illegal environment variable name")
nix-eval-jobs-functional-tests>                         env_list.append(k + b'=' + os.fsencode(v))
nix-eval-jobs-functional-tests>                 else:
nix-eval-jobs-functional-tests>                     env_list = None  # Use execv instead of execve.
nix-eval-jobs-functional-tests>                 executable = os.fsencode(executable)
nix-eval-jobs-functional-tests>                 if os.path.dirname(executable):
nix-eval-jobs-functional-tests>                     executable_list = (executable,)
nix-eval-jobs-functional-tests>                 else:
nix-eval-jobs-functional-tests>                     # This matches the behavior of os._execvpe().
nix-eval-jobs-functional-tests>                     executable_list = tuple(
nix-eval-jobs-functional-tests>                         os.path.join(os.fsencode(dir), executable)
nix-eval-jobs-functional-tests>                         for dir in os.get_exec_path(env))
nix-eval-jobs-functional-tests>                 fds_to_keep = set(pass_fds)
nix-eval-jobs-functional-tests>                 fds_to_keep.add(errpipe_write)
nix-eval-jobs-functional-tests>                 self.pid = _fork_exec(
nix-eval-jobs-functional-tests>                         args, executable_list,
nix-eval-jobs-functional-tests>                         close_fds, tuple(sorted(map(int, fds_to_keep))),
nix-eval-jobs-functional-tests>                         cwd, env_list,
nix-eval-jobs-functional-tests>                         p2cread, p2cwrite, c2pread, c2pwrite,
nix-eval-jobs-functional-tests>                         errread, errwrite,
nix-eval-jobs-functional-tests>                         errpipe_read, errpipe_write,
nix-eval-jobs-functional-tests>                         restore_signals, start_new_session,
nix-eval-jobs-functional-tests>                         process_group, gid, gids, uid, umask,
nix-eval-jobs-functional-tests>                         preexec_fn, _USE_VFORK)
nix-eval-jobs-functional-tests>                 self._child_created = True
nix-eval-jobs-functional-tests>             finally:
nix-eval-jobs-functional-tests>                 # be sure the FD is closed no matter what
nix-eval-jobs-functional-tests>                 os.close(errpipe_write)
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>             self._close_pipe_fds(p2cread, p2cwrite,
nix-eval-jobs-functional-tests>                                  c2pread, c2pwrite,
nix-eval-jobs-functional-tests>                                  errread, errwrite)
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>             # Wait for exec to fail or succeed; possibly raising an
nix-eval-jobs-functional-tests>             # exception (limited in size)
nix-eval-jobs-functional-tests>             errpipe_data = bytearray()
nix-eval-jobs-functional-tests>             while True:
nix-eval-jobs-functional-tests>                 part = os.read(errpipe_read, 50000)
nix-eval-jobs-functional-tests>                 errpipe_data += part
nix-eval-jobs-functional-tests>                 if not part or len(errpipe_data) > 50000:
nix-eval-jobs-functional-tests>                     break
nix-eval-jobs-functional-tests>         finally:
nix-eval-jobs-functional-tests>             # be sure the FD is closed no matter what
nix-eval-jobs-functional-tests>             os.close(errpipe_read)
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>         if errpipe_data:
nix-eval-jobs-functional-tests>             try:
nix-eval-jobs-functional-tests>                 pid, sts = os.waitpid(self.pid, 0)
nix-eval-jobs-functional-tests>                 if pid == self.pid:
nix-eval-jobs-functional-tests>                     self._handle_exitstatus(sts)
nix-eval-jobs-functional-tests>                 else:
nix-eval-jobs-functional-tests>                     self.returncode = sys.maxsize
nix-eval-jobs-functional-tests>             except ChildProcessError:
nix-eval-jobs-functional-tests>                 pass
nix-eval-jobs-functional-tests>     
nix-eval-jobs-functional-tests>             try:
nix-eval-jobs-functional-tests>                 exception_name, hex_errno, err_msg = (
nix-eval-jobs-functional-tests>                         errpipe_data.split(b':', 2))
nix-eval-jobs-functional-tests>                 # The encoding here should match the encoding
nix-eval-jobs-functional-tests>                 # written in by the subprocess implementations
nix-eval-jobs-functional-tests>                 # like _posixsubprocess
nix-eval-jobs-functional-tests>                 err_msg = err_msg.decode()
nix-eval-jobs-functional-tests>             except ValueError:
nix-eval-jobs-functional-tests>                 exception_name = b'SubprocessError'
nix-eval-jobs-functional-tests>                 hex_errno = b'0'
nix-eval-jobs-functional-tests>                 err_msg = 'Bad exception data from child: {!r}'.format(
nix-eval-jobs-functional-tests>                               bytes(errpipe_data))
nix-eval-jobs-functional-tests>             child_exception_type = getattr(
nix-eval-jobs-functional-tests>                     builtins, exception_name.decode('ascii'),
nix-eval-jobs-functional-tests>                     SubprocessError)
nix-eval-jobs-functional-tests>             if issubclass(child_exception_type, OSError) and hex_errno:
nix-eval-jobs-functional-tests>                 errno_num = int(hex_errno, 16)
nix-eval-jobs-functional-tests>                 if err_msg == "noexec:chdir":
nix-eval-jobs-functional-tests>                     err_msg = ""
nix-eval-jobs-functional-tests>                     # The error must be from chdir(cwd).
nix-eval-jobs-functional-tests>                     err_filename = cwd
nix-eval-jobs-functional-tests>                 elif err_msg == "noexec":
nix-eval-jobs-functional-tests>                     err_msg = ""
nix-eval-jobs-functional-tests>                     err_filename = None
nix-eval-jobs-functional-tests>                 else:
nix-eval-jobs-functional-tests>                     err_filename = orig_executable
nix-eval-jobs-functional-tests>                 if errno_num != 0:
nix-eval-jobs-functional-tests>                     err_msg = os.strerror(errno_num)
nix-eval-jobs-functional-tests>                 if err_filename is not None:
nix-eval-jobs-functional-tests> >                   raise child_exception_type(errno_num, err_msg, err_filename)
nix-eval-jobs-functional-tests> E                   FileNotFoundError: [Errno 2] No such file or directory: 'git'
nix-eval-jobs-functional-tests> 
nix-eval-jobs-functional-tests> /nix/store/xcjk9ill54kjk8mzgq6yydnx9015lidg-python3-3.13.9/lib/python3.13/subprocess.py:1972: FileNotFoundError
nix-eval-jobs-functional-tests> =========================== short test summary info ============================
nix-eval-jobs-functional-tests> FAILED tests-functional/test_eval.py::test_workers_do_not_race_flake_fetch - FileNotFoundError: [Errno 2] No such file or directory: 'git'
nix-eval-jobs-functional-tests> ========================= 1 failed, 22 passed in 4.19s =========================
error: build of '/nix/store/f1rf8wp57pz8xgac2pj42i0azl9rnsy0-nix-eval-jobs-functional-tests.drv' on 'ssh-ng://customer@mac02' failed: Cannot build '/nix/store/f1rf8wp57pz8xgac2pj42i0azl9rnsy0-nix-eval-jobs-functional-tests.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/a3bpw2vpnd2hmn2mp4zv0qlqd9bfm97m-nix-eval-jobs-functional-tests
       Last 25 log lines:
       >                               bytes(errpipe_data))
       >             child_exception_type = getattr(
       >                     builtins, exception_name.decode('ascii'),
       >                     SubprocessError)
       >             if issubclass(child_exception_type, OSError) and hex_errno:
       >                 errno_num = int(hex_errno, 16)
       >                 if err_msg == "noexec:chdir":
       >                     err_msg = ""
       >                     # The error must be from chdir(cwd).
       >                     err_filename = cwd
       >                 elif err_msg == "noexec":
       >                     err_msg = ""
       >                     err_filename = None
       >                 else:
       >                     err_filename = orig_executable
       >                 if errno_num != 0:
       >                     err_msg = os.strerror(errno_num)
       >                 if err_filename is not None:
       > >                   raise child_exception_type(errno_num, err_msg, err_filename)
       > E                   FileNotFoundError: [Errno 2] No such file or directory: 'git'
       >
       > /nix/store/xcjk9ill54kjk8mzgq6yydnx9015lidg-python3-3.13.9/lib/python3.13/subprocess.py:1972: FileNotFoundError
       > =========================== short test summary info ============================
       > FAILED tests-functional/test_eval.py::test_workers_do_not_race_flake_fetch - FileNotFoundError: [Errno 2] No such file or directory: 'git'
       > ========================= 1 failed, 22 passed in 4.19s =========================
       For full logs, run:
         nix log /nix/store/f1rf8wp57pz8xgac2pj42i0azl9rnsy0-nix-eval-jobs-functional-tests.drv
error: Cannot build '/nix/store/f1rf8wp57pz8xgac2pj42i0azl9rnsy0-nix-eval-jobs-functional-tests.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/a3bpw2vpnd2hmn2mp4zv0qlqd9bfm97m-nix-eval-jobs-functional-tests