error: builder for '/nix/store/ijhhy291glr87n55j9k8cpmpav6pwy0f-rnsh-0.1.5.drv' failed with exit code 2;
       last 25 log lines:
       > tests/test_rnsh.py:111
       >   /build/source/tests/test_rnsh.py:111: PytestUnknownMarkWarning: Unknown pytest.mark.asyncio - is this a typo?  You can register custom marks to avoid this warning - for details, see https://docs.pytest.org/en/stable/how-to/mark.html
       >     @pytest.mark.asyncio
       >
       > tests/test_rnsh.py:159
       >   /build/source/tests/test_rnsh.py:159: PytestUnknownMarkWarning: Unknown pytest.mark.asyncio - is this a typo?  You can register custom marks to avoid this warning - for details, see https://docs.pytest.org/en/stable/how-to/mark.html
       >     @pytest.mark.asyncio
       >
       > tests/test_rnsh.py:175
       >   /build/source/tests/test_rnsh.py:175: PytestUnknownMarkWarning: Unknown pytest.mark.asyncio - is this a typo?  You can register custom marks to avoid this warning - for details, see https://docs.pytest.org/en/stable/how-to/mark.html
       >     @pytest.mark.asyncio
       >
       > tests/test_rnsh.py:191
       >   /build/source/tests/test_rnsh.py:191: PytestUnknownMarkWarning: Unknown pytest.mark.asyncio - is this a typo?  You can register custom marks to avoid this warning - for details, see https://docs.pytest.org/en/stable/how-to/mark.html
       >     @pytest.mark.asyncio
       >
       > tests/test_rnsh.py:207
       >   /build/source/tests/test_rnsh.py:207: PytestUnknownMarkWarning: Unknown pytest.mark.asyncio - is this a typo?  You can register custom marks to avoid this warning - for details, see https://docs.pytest.org/en/stable/how-to/mark.html
       >     @pytest.mark.asyncio
       >
       > -- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
       > =========================== short test summary info ============================
       > ERROR tty_test.py - TypeError: unsupported format string passed to NoneType.__format__
       > !!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
       > ======================== 21 warnings, 1 error in 0.25s =========================
       For full logs, run 'nix log /nix/store/ijhhy291glr87n55j9k8cpmpav6pwy0f-rnsh-0.1.5.drv'.

       > tty_test.py:5: in <module>
       >     print(f"{stream.name:8s} " + ("tty" if os.isatty(stream.fileno()) else "not tty"))
       > E   TypeError: unsupported format string passed to NoneType.__format__
       > =============================== warnings summary ===============================
       > rnsh/docopt.py:156
       >   /build/source/rnsh/docopt.py:156: SyntaxWarning: invalid escape sequence '\S'
       >     name = re.findall('(<\S*?>)', source)[0]
       >
       > rnsh/docopt.py:157
       >   /build/source/rnsh/docopt.py:157: SyntaxWarning: invalid escape sequence '\['
       >     value = re.findall('\[default: (.*)\]', source, flags=re.I)
       >
       > rnsh/docopt.py:198
       >   /build/source/rnsh/docopt.py:198: SyntaxWarning: invalid escape sequence '\['
       >     matched = re.findall('\[default: (.*)\]', description, flags=re.I)
       >
       > rnsh/docopt.py:432
       >   /build/source/rnsh/docopt.py:432: SyntaxWarning: invalid escape sequence '\S'
       >     split = re.split('\n *(<\S+?>|-\S+?)', doc)[1:]
       >
       > -- Docs: https://docs.pytest.org/en/stable/how-to/capture-warnings.html
       > =========================== short test summary info ============================
       > ERROR tty_test.py - TypeError: unsupported format string passed to NoneType.__format__
       > !!!!!!!!!!!!!!!!!!!! Interrupted: 1 error during collection !!!!!!!!!!!!!!!!!!!!
       > ========================= 4 warnings, 1 error in 0.34s =========================