Free-threaded Python Library Compatibility Checker

sMethod’:
      asyncpg/pgproto/pgproto.c:49206:6: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
      49206 |      __pyx_vectorcallfunc vc = __Pyx_CyFunction_func_vectorcall(cyfunc);
            |      ^~~~~~~~~~~~~~~~~~~~
            |      vectorcallfunc
      asyncpg/pgproto/pgproto.c:2883:45: warning: initialization of ‘int’ from ‘vectorcallfunc’ {aka ‘struct _object * (*)(struct _object *, struct _object * const*, long unsigned int,  struct _object *)’} makes integer from pointer without a cast [-Wint-conversion]
       2883 | #define __Pyx_CyFunction_func_vectorcall(f) (((PyCFunctionObject*)f)->vectorcall)
            |                                             ^
      asyncpg/pgproto/pgproto.c:49206:32: note: in expansion of macro ‘__Pyx_CyFunction_func_vectorcall’
      49206 |      __pyx_vectorcallfunc vc = __Pyx_CyFunction_func_vectorcall(cyfunc);
            |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      asyncpg/pgproto/pgproto.c:49209:16: warning: implicit declaration of function ‘__Pyx_PyVectorcall_FastCallDict’; did you mean ‘__Pyx_PyObject_FastCallDict’? [-Wimplicit-function-declaration]
      49209 |         return __Pyx_PyVectorcall_FastCallDict(func, vc, &PyTuple_GET_ITEM(args, 0), (size_t)PyTuple_GET_SIZE(args), kw);
            |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            |                __Pyx_PyObject_FastCallDict
      asyncpg/pgproto/pgproto.c:49209:16: warning: returning ‘int’ from a function with return type ‘PyObject *’ {aka ‘struct _object *’} makes pointer from integer without a cast [-Wint-conversion]
      49209 |         return __Pyx_PyVectorcall_FastCallDict(func, vc, &PyTuple_GET_ITEM(args, 0), (size_t)PyTuple_GET_SIZE(args), kw);
            |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      In file included from /home/runner/.local/share/uv/python/cpython-3.13.3+freethreaded-linux-x86_64-gnu/include/python3.13t/internal/pycore_code.h:12,
                       from /home/runner/.local/share/uv/python/cpython-3.13.3+freethreaded-linux-x86_64-gnu/include/python3.13t/internal/pycore_frame.h:13,
                       from asyncpg/pgproto/pgproto.c:49677:
      /home/runner/.local/share/uv/python/cpython-3.13.3+freethreaded-linux-x86_64-gnu/include/python3.13t/internal/pycore_backoff.h: In function ‘make_backoff_counter’:
      /home/runner/.local/share/uv/python/cpython-3.13.3+freethreaded-linux-x86_64-gnu/include/python3.13t/internal/pycore_backoff.h:60:20: warning: conversion from ‘uint16_t’ {aka ‘short unsigned int’} to ‘short unsigned int:12’ may change value [-Wconversion]
         60 |     result.value = value;
            |                    ^~~~~
      /home/runner/.local/share/uv/python/cpython-3.13.3+freethreaded-linux-x86_64-gnu/include/python3.13t/internal/pycore_backoff.h:61:22: warning: conversion from ‘uint16_t’ {aka ‘short unsigned int’} to ‘unsigned char:4’ may change value [-Wconversion]
         61 |     result.backoff = backoff;
            |                      ^~~~~~~
      /home/runner/.local/share/uv/python/cpython-3.13.3+freethreaded-linux-x86_64-gnu/include/python3.13t/internal/pycore_backoff.h: In function ‘restart_backoff_counter’:
      /home/runner/.local/share/uv/python/cpython-3.13.3+freethreaded-linux-x86_64-gnu/include/python3.13t/internal/pycore_backoff.h:78:66: warning: conversion from ‘int’ to ‘uint16_t’ {aka ‘short unsigned int’} may change value [-Wconversion]
         78 |         return make_backoff_counter((1 << (counter.backoff + 1)) - 1, counter.backoff + 1);
            |                                     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~
      asyncpg/pgproto/pgproto.c: At top level:
      asyncpg/pgproto/pgproto.c:30439:18: warning: ‘__pyx_f_7asyncpg_7pgproto_7pgproto_json_decode’ defined but not used [-Wunused-function]
      30439 | static PyObject *__pyx_f_7asyncpg_7pgproto_7pgproto_json_decode(struct __pyx_obj_7asyncpg_7pgproto_7pgproto_CodecContext *__pyx_v_settings, struct __pyx_t_7asyncpg_7pgproto_7pgproto_FRBuffer *__pyx_v_buf) {
            |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      asyncpg/pgproto/pgproto.c:30323:18: warning: ‘__pyx_f_7asyncpg_7pgproto_7pgproto_json_encode’ defined but not used [-Wunused-function]
      30323 | static PyObject *__pyx_f_7asyncpg_7pgproto_7pgproto_json_encode(struct __pyx_obj_7asyncpg_7pgproto_7pgproto_CodecContext *__pyx_v_settings, struct __pyx_obj_7asyncpg_7pgproto_7pgproto_WriteBuffer *__pyx_v_buf, PyObject *__pyx_v_obj) {
            |                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      error: command '/usr/bin/cc' failed with exit code 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for asyncpg
ERROR: Failed to build installable wheels for some pyproject.toml based projects (asyncpg)

ackend-0be5c59cdc9db8aa/build-script-build`
           Running `/tmp/pip-install-ubp9yee3/tiktoken_f871086b8e434656912a7550a2285e35/target/release/build/pyo3-ffi-44a60d7002fb8ff6/build-script-build`
      error: failed to run custom build command for `pyo3-ffi v0.22.6`
      
      Caused by:
        process didn't exit successfully: `/tmp/pip-install-ubp9yee3/tiktoken_f871086b8e434656912a7550a2285e35/target/release/build/pyo3-ffi-44a60d7002fb8ff6/build-script-build` (exit status: 1)
        --- stdout
        cargo:rustc-check-cfg=cfg(Py_LIMITED_API)
        cargo:rustc-check-cfg=cfg(PyPy)
        cargo:rustc-check-cfg=cfg(GraalPy)
        cargo:rustc-check-cfg=cfg(py_sys_config, values("Py_DEBUG", "Py_REF_DEBUG", "Py_TRACE_REFS", "COUNT_ALLOCS"))
        cargo:rustc-check-cfg=cfg(invalid_from_utf8_lint)
        cargo:rustc-check-cfg=cfg(pyo3_disable_reference_pool)
        cargo:rustc-check-cfg=cfg(pyo3_leak_on_drop_without_reference_pool)
        cargo:rustc-check-cfg=cfg(diagnostic_namespace)
        cargo:rustc-check-cfg=cfg(c_str_lit)
        cargo:rustc-check-cfg=cfg(Py_3_7)
        cargo:rustc-check-cfg=cfg(Py_3_8)
        cargo:rustc-check-cfg=cfg(Py_3_9)
        cargo:rustc-check-cfg=cfg(Py_3_10)
        cargo:rustc-check-cfg=cfg(Py_3_11)
        cargo:rustc-check-cfg=cfg(Py_3_12)
        cargo:rustc-check-cfg=cfg(Py_3_13)
        cargo:rerun-if-env-changed=PYO3_CROSS
        cargo:rerun-if-env-changed=PYO3_CROSS_LIB_DIR
        cargo:rerun-if-env-changed=PYO3_CROSS_PYTHON_VERSION
        cargo:rerun-if-env-changed=PYO3_CROSS_PYTHON_IMPLEMENTATION
        cargo:rerun-if-env-changed=PYO3_PRINT_CONFIG
      
        --- stderr
        error: the Python interpreter was built with the GIL disabled, which is not yet supported by PyO3
        = help: see https://github.com/PyO3/pyo3/issues/4265 for more information
        = help: please check if an updated version of PyO3 is available. Current version: 0.22.6
        = help: set UNSAFE_PYO3_BUILD_FREE_THREADED=1 to suppress this check and build anyway for free-threaded Python
      warning: build failed, waiting for other jobs to finish...
      error: `cargo rustc --lib --message-format=json-render-diagnostics --manifest-path Cargo.toml --release -v --features 'pyo3/extension-module python' --crate-type cdylib --` failed with code 101
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for tiktoken
  error: subprocess-exited-with-error
  
  × Building wheel for zstandard (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [25 lines of output]
      <string>:41: DeprecationWarning: distutils Version classes are deprecated. Use packaging.version instead.
      <string>:42: DeprecationWarning: distutils Version classes are deprecated. Use packaging.version instead.
      <frozen importlib._bootstrap>:488: RuntimeWarning: The global interpreter lock (GIL) has been enabled to load module '_cffi_backend', which has not declared that it can run safely without the GIL. To override this behavior and keep the GIL disabled (at your own risk), run with PYTHON_GIL=0 or -Xgil=0.
      not modified: 'build/zstandard/_cffi.c'
      generating build/zstandard/_cffi.c
      (already up-to-date)
      running bdist_wheel
      running build
      running build_py
      creating build/lib.linux-x86_64-cpython-313
      creating build/lib.linux-x86_64-cpython-313/zstandard
      copying zstandard/backend_cffi.py -> build/lib.linux-x86_64-cpython-313/zstandard
      copying zstandard/__init__.py -> build/lib.linux-x86_64-cpython-313/zstandard
      copying zstandard/__init__.pyi -> build/lib.linux-x86_64-cpython-313/zstandard
      copying zstandard/py.typed -> build/lib.linux-x86_64-cpython-313/zstandard
      running build_ext
      building 'zstandard.backend_c' extension
      creating build/temp.linux-x86_64-cpython-313
      creating build/temp.linux-x86_64-cpython-313/c-ext
      cc -pthread -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -fPIC -fPIC -Ic-ext -Izstd -I/tmp/tmp2qovidp6/venv/include -I/home/runner/.local/share/uv/python/cpython-3.13.3+freethreaded-linux-x86_64-gnu/include/python3.13t -c c-ext/backend_c.c -o build/temp.linux-x86_64-cpython-313/c-ext/backend_c.o -DZSTD_SINGLE_FILE -DZSTDLIB_VISIBLE= -DZDICTLIB_VISIBLE= -DZSTDERRORLIB_VISIBLE= -fvisibility=hidden
      c-ext/backend_c.c: In function ‘safe_pybytes_resize’:
      c-ext/backend_c.c:316:15: error: ‘PyObject’ {aka ‘struct _object’} has no member named ‘ob_refcnt’
        316 |     if ((*obj)->ob_refcnt == 1) {
            |               ^~
      error: command '/usr/bin/cc' failed with exit code 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for zstandard
ERROR: Failed to build installable wheels for some pyproject.toml based projects (orjson, tiktoken, zstandard)