Free-threaded Python Library Compatibility Checker

iled to build a native library through cargo
        Caused by: Cargo build finished with "exit status: 101": `env -u CARGO PYO3_ENVIRONMENT_SIGNATURE="cpython-3.14-64bit" PYO3_PYTHON="/tmp/tmp3kfpdqom/venv/bin/python" PYTHON_SYS_EXECUTABLE="/tmp/tmp3kfpdqom/venv/bin/python" "cargo" "rustc" "--message-format" "json-render-diagnostics" "--manifest-path" "/tmp/pip-install-e5wt_3s7/orjson_61da642a581444508410d1f328d97e73/Cargo.toml" "--release" "--lib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/tmp/tmp3kfpdqom/venv/bin/python', '--compatibility', 'off'] returned non-zero exit status 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for orjson
  error: subprocess-exited-with-error
  
  × Building wheel for pydantic-core (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [13 lines of output]
      Running `maturin pep517 build-wheel -i /tmp/tmp3kfpdqom/venv/bin/python --compatibility off`
      📦 Including license file "/tmp/pip-install-e5wt_3s7/pydantic-core_7008f03041f3433491aba7aa60f1e6bf/LICENSE"
      🍹 Building a mixed python/rust project
      🔗 Found pyo3 bindings
      🐍 Found CPython 3.14t at /tmp/tmp3kfpdqom/venv/bin/python
      📡 Using build options features, bindings from pyproject.toml
      warning: unused manifest key: lints
      error: package `pydantic-core v2.33.2 (/tmp/pip-install-e5wt_3s7/pydantic-core_7008f03041f3433491aba7aa60f1e6bf)` cannot be built because it requires rustc 1.75 or newer, while the currently active rustc version is 1.63.0
      
      💥 maturin failed
        Caused by: Failed to build a native library through cargo
        Caused by: Cargo build finished with "exit status: 101": `env -u CARGO PYO3_ENVIRONMENT_SIGNATURE="cpython-3.14-64bit" PYO3_PYTHON="/tmp/tmp3kfpdqom/venv/bin/python" PYTHON_SYS_EXECUTABLE="/tmp/tmp3kfpdqom/venv/bin/python" "cargo" "rustc" "--features" "pyo3/extension-module" "--message-format" "json-render-diagnostics" "--manifest-path" "/tmp/pip-install-e5wt_3s7/pydantic-core_7008f03041f3433491aba7aa60f1e6bf/Cargo.toml" "--release" "--lib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/tmp/tmp3kfpdqom/venv/bin/python', '--compatibility', 'off'] returned non-zero exit status 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for pydantic-core
  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.
      generating build/zstandard/_cffi.c
      (already up-to-date)
      not modified: 'build/zstandard/_cffi.c'
      running bdist_wheel
      running build
      running build_py
      creating build/lib.linux-x86_64-cpython-314
      creating build/lib.linux-x86_64-cpython-314/zstandard
      copying zstandard/__init__.py -> build/lib.linux-x86_64-cpython-314/zstandard
      copying zstandard/backend_cffi.py -> build/lib.linux-x86_64-cpython-314/zstandard
      copying zstandard/__init__.pyi -> build/lib.linux-x86_64-cpython-314/zstandard
      copying zstandard/py.typed -> build/lib.linux-x86_64-cpython-314/zstandard
      running build_ext
      building 'zstandard.backend_c' extension
      creating build/temp.linux-x86_64-cpython-314
      creating build/temp.linux-x86_64-cpython-314/c-ext
      cc -pthread -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -fPIC -fPIC -Ic-ext -Izstd -I/tmp/tmp3kfpdqom/venv/include -I/root/.local/share/uv/python/cpython-3.14.0a6+freethreaded-linux-x86_64-gnu/include/python3.14t -c c-ext/backend_c.c -o build/temp.linux-x86_64-cpython-314/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, pydantic-core, zstandard)

andom__mt19937.pyx.c.o -MF numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/meson-generated_numpy_random__mt19937.pyx.c.o.d -o numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/meson-generated_numpy_random__mt19937.pyx.c.o -c numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/numpy/random/_mt19937.pyx.c
      numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/numpy/random/_mt19937.pyx.c:2358:80: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
       2358 | static CYTHON_INLINE PyObject *__Pyx_PyVectorcall_FastCallDict(PyObject *func, __pyx_vectorcallfunc vc, PyObject *const *args, size_t nargs, PyObject *kw);
            |                                                                                ^~~~~~~~~~~~~~~~~~~~
            |                                                                                vectorcallfunc
      numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/numpy/random/_mt19937.pyx.c:11219:69: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
      11219 | static PyObject *__Pyx_PyVectorcall_FastCallDict_kw(PyObject *func, __pyx_vectorcallfunc vc, PyObject *const *args, size_t nargs, PyObject *kw)
            |                                                                     ^~~~~~~~~~~~~~~~~~~~
            |                                                                     vectorcallfunc
      numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/numpy/random/_mt19937.pyx.c:11264:80: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
      11264 | static CYTHON_INLINE PyObject *__Pyx_PyVectorcall_FastCallDict(PyObject *func, __pyx_vectorcallfunc vc, PyObject *const *args, size_t nargs, PyObject *kw)
            |                                                                                ^~~~~~~~~~~~~~~~~~~~
            |                                                                                vectorcallfunc
      numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/numpy/random/_mt19937.pyx.c: In function ‘__Pyx_CyFunction_CallAsMethod’:
      numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/numpy/random/_mt19937.pyx.c:11953:6: error: unknown type name ‘__pyx_vectorcallfunc’; did you mean ‘vectorcallfunc’?
      11953 |      __pyx_vectorcallfunc vc = __Pyx_CyFunction_func_vectorcall(cyfunc);
            |      ^~~~~~~~~~~~~~~~~~~~
            |      vectorcallfunc
      numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/numpy/random/_mt19937.pyx.c:2448:45: 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]
       2448 | #define __Pyx_CyFunction_func_vectorcall(f) (((PyCFunctionObject*)f)->vectorcall)
            |                                             ^
      numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/numpy/random/_mt19937.pyx.c:11953:32: note: in expansion of macro ‘__Pyx_CyFunction_func_vectorcall’
      11953 |      __pyx_vectorcallfunc vc = __Pyx_CyFunction_func_vectorcall(cyfunc);
            |                                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/numpy/random/_mt19937.pyx.c:11956:16: warning: implicit declaration of function ‘__Pyx_PyVectorcall_FastCallDict’; did you mean ‘__Pyx_PyObject_FastCallDict’? [-Wimplicit-function-declaration]
      11956 |         return __Pyx_PyVectorcall_FastCallDict(func, vc, &PyTuple_GET_ITEM(args, 0), (size_t)PyTuple_GET_SIZE(args), kw);
            |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            |                __Pyx_PyObject_FastCallDict
      numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/numpy/random/_mt19937.pyx.c:11956:16: warning: returning ‘int’ from a function with return type ‘PyObject *’ {aka ‘struct _object *’} makes pointer from integer without a cast [-Wint-conversion]
      11956 |         return __Pyx_PyVectorcall_FastCallDict(func, vc, &PyTuple_GET_ITEM(args, 0), (size_t)PyTuple_GET_SIZE(args), kw);
            |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      [501/530] Compiling C object numpy/random/_bounded_integers.cpython-314t-x86_64-linux-gnu.so.p/meson-generated_numpy_random__bounded_integers.pyx.c.o
      [502/530] Compiling C object numpy/random/_common.cpython-314t-x86_64-linux-gnu.so.p/meson-generated_numpy_random__common.pyx.c.o
      ninja: build stopped: subcommand failed.
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.

hon --compatibility off`
      📦 Including license file "/tmp/pip-install-1r2hzxwm/cryptography_96eb4af3a5cc4b71b19b1e8e988a7f5c/LICENSE"
      📦 Including license file "/tmp/pip-install-1r2hzxwm/cryptography_96eb4af3a5cc4b71b19b1e8e988a7f5c/LICENSE.APACHE"
      📦 Including license file "/tmp/pip-install-1r2hzxwm/cryptography_96eb4af3a5cc4b71b19b1e8e988a7f5c/LICENSE.BSD"
      🍹 Building a mixed python/rust project
      🔗 Found pyo3 bindings with abi3 support for Python ≥ 3.7
      🐍 Not using a specific python interpreter
      📡 Using build options features, locked from pyproject.toml
      ⚠️ Warning: CPython 3.14t at /tmp/tmp_25k0mif/venv/bin/python does not yet support abi3 so the build artifacts will be version-specific.
      warning: /tmp/pip-install-1r2hzxwm/cryptography_96eb4af3a5cc4b71b19b1e8e988a7f5c/src/rust/cryptography-cffi/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-1r2hzxwm/cryptography_96eb4af3a5cc4b71b19b1e8e988a7f5c/src/rust/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-1r2hzxwm/cryptography_96eb4af3a5cc4b71b19b1e8e988a7f5c/src/rust/cryptography-key-parsing/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-1r2hzxwm/cryptography_96eb4af3a5cc4b71b19b1e8e988a7f5c/src/rust/cryptography-openssl/Cargo.toml: unused manifest key: lints
      error: package `cryptography-openssl v0.1.0 (/tmp/pip-install-1r2hzxwm/cryptography_96eb4af3a5cc4b71b19b1e8e988a7f5c/src/rust/cryptography-openssl)` cannot be built because it requires rustc 1.65.0 or newer, while the currently active rustc version is 1.63.0
      
      💥 maturin failed
        Caused by: Failed to build a native library through cargo
        Caused by: Cargo build finished with "exit status: 101": `env -u CARGO PYO3_ENVIRONMENT_SIGNATURE="cpython-3.14-64bit" PYO3_PYTHON="/tmp/tmp_25k0mif/venv/bin/python" PYTHON_SYS_EXECUTABLE="/tmp/tmp_25k0mif/venv/bin/python" "cargo" "rustc" "--features" "pyo3/abi3-py37" "--message-format" "json-render-diagnostics" "--locked" "--manifest-path" "/tmp/pip-install-1r2hzxwm/cryptography_96eb4af3a5cc4b71b19b1e8e988a7f5c/src/rust/Cargo.toml" "--release" "--lib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/tmp/tmp_25k0mif/venv/bin/python', '--compatibility', 'off'] returned non-zero exit status 1
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
  ERROR: Failed building wheel for cryptography
  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.
      generating build/zstandard/_cffi.c
      (already up-to-date)
      not modified: 'build/zstandard/_cffi.c'
      running bdist_wheel
      running build
      running build_py
      creating build/lib.linux-x86_64-cpython-314
      creating build/lib.linux-x86_64-cpython-314/zstandard
      copying zstandard/__init__.py -> build/lib.linux-x86_64-cpython-314/zstandard
      copying zstandard/backend_cffi.py -> build/lib.linux-x86_64-cpython-314/zstandard
      copying zstandard/__init__.pyi -> build/lib.linux-x86_64-cpython-314/zstandard
      copying zstandard/py.typed -> build/lib.linux-x86_64-cpython-314/zstandard
      running build_ext
      building 'zstandard.backend_c' extension
      creating build/temp.linux-x86_64-cpython-314
      creating build/temp.linux-x86_64-cpython-314/c-ext
      cc -pthread -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -fPIC -fPIC -Ic-ext -Izstd -I/tmp/tmp_25k0mif/venv/include -I/root/.local/share/uv/python/cpython-3.14.0a6+freethreaded-linux-x86_64-gnu/include/python3.14t -c c-ext/backend_c.c -o build/temp.linux-x86_64-cpython-314/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 (msgpack, cryptography, zstandard)