Free-threaded Python Library Compatibility Checker

  error: subprocess-exited-with-error
  
  × Building wheel for cryptography (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [19 lines of output]
      Running `maturin pep517 build-wheel -i /tmp/tmpe9mzvyuw/venv/bin/python --compatibility off`
      📦 Including license file "/tmp/pip-install-dyan4tjn/cryptography_26378e4150664dacabbfccbe34ea373d/LICENSE"
      📦 Including license file "/tmp/pip-install-dyan4tjn/cryptography_26378e4150664dacabbfccbe34ea373d/LICENSE.APACHE"
      📦 Including license file "/tmp/pip-install-dyan4tjn/cryptography_26378e4150664dacabbfccbe34ea373d/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/tmpe9mzvyuw/venv/bin/python does not yet support abi3 so the build artifacts will be version-specific.
      warning: /tmp/pip-install-dyan4tjn/cryptography_26378e4150664dacabbfccbe34ea373d/src/rust/cryptography-cffi/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-dyan4tjn/cryptography_26378e4150664dacabbfccbe34ea373d/src/rust/cryptography-key-parsing/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-dyan4tjn/cryptography_26378e4150664dacabbfccbe34ea373d/src/rust/cryptography-openssl/Cargo.toml: unused manifest key: lints
      warning: /tmp/pip-install-dyan4tjn/cryptography_26378e4150664dacabbfccbe34ea373d/src/rust/Cargo.toml: unused manifest key: lints
      error: package `cryptography-x509 v0.1.0 (/tmp/pip-install-dyan4tjn/cryptography_26378e4150664dacabbfccbe34ea373d/src/rust/cryptography-x509)` 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/tmpe9mzvyuw/venv/bin/python" PYTHON_SYS_EXECUTABLE="/tmp/tmpe9mzvyuw/venv/bin/python" "cargo" "rustc" "--features" "pyo3/abi3-py37" "--message-format" "json-render-diagnostics" "--locked" "--manifest-path" "/tmp/pip-install-dyan4tjn/cryptography_26378e4150664dacabbfccbe34ea373d/src/rust/Cargo.toml" "--release" "--lib"`
      Error: command ['maturin', 'pep517', 'build-wheel', '-i', '/tmp/tmpe9mzvyuw/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: Failed to build installable wheels for some pyproject.toml based projects (cryptography)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      [501/530] Compiling Cython source /tmp/pip-install-tpv3l3i_/numpy_3d515cfca67b49abbf95e0b5cad40f9c/numpy/random/_philox.pyx
      [502/530] Compiling C object numpy/linalg/_umath_linalg.cpython-314t-x86_64-linux-gnu.so.p/lapack_lite_f2c_blas.c.o
      [503/530] Compiling C object numpy/random/_bounded_integers.cpython-314t-x86_64-linux-gnu.so.p/meson-generated_numpy_random__bounded_integers.pyx.c.o
      [504/530] 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.

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.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      [498/530] Compiling C object numpy/random/_mt19937.cpython-314t-x86_64-linux-gnu.so.p/src_mt19937_mt19937.c.o
      [499/530] Compiling Cython source /tmp/pip-install-g9keyufu/numpy_013c78bc579c4db2981f6738e2ec40b9/numpy/random/_common.pyx
      [500/530] Compiling C object numpy/linalg/_umath_linalg.cpython-314t-x86_64-linux-gnu.so.p/lapack_lite_f2c_blas.c.o
      [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
      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.

ck (most recent call last):
        File "/tmp/pip-build-env-93w0y5jy/overlay/lib/python3.14t/site-packages/setuptools/_distutils/compilers/C/unix.py", line 217, in _compile
          self.spawn(
          ~~~~~~~~~~^
              compiler_so_cxx + cc_args + [src, '-o', obj] + extra_postargs
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          )
          ^
        File "/tmp/pip-install-wbb6yv4_/grpcio_16c7abd275f347f39b4dfc0857ff3892/src/python/grpcio/_spawn_patch.py", line 66, in _commandfile_spawn
          _classic_spawn(self, command, **kwargs)
          ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-93w0y5jy/overlay/lib/python3.14t/site-packages/setuptools/_distutils/compilers/C/base.py", line 1158, in spawn
          spawn(cmd, dry_run=self.dry_run, **kwargs)
          ~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-93w0y5jy/overlay/lib/python3.14t/site-packages/setuptools/_distutils/spawn.py", line 93, in spawn
          raise DistutilsExecError(
              f"command {_debug(cmd)!r} failed with exit code {err.returncode}"
          ) from err
      distutils.errors.DistutilsExecError: command '/usr/bin/c++' failed with exit code 1
      
      During handling of the above exception, another exception occurred:
      
      Traceback (most recent call last):
        File "/tmp/pip-install-wbb6yv4_/grpcio_16c7abd275f347f39b4dfc0857ff3892/src/python/grpcio/commands.py", line 282, in build_extensions
          build_ext.build_ext.build_extensions(self)
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
        File "/tmp/pip-build-env-93w0y5jy/overlay/lib/python3.14t/site-packages/setuptools/_distutils/command/build_ext.py", line 484, in build_extensions
          self._build_extensions_serial()
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
        File "/tmp/pip-build-env-93w0y5jy/overlay/lib/python3.14t/site-packages/setuptools/_distutils/command/build_ext.py", line 510, in _build_extensions_serial
          self.build_extension(ext)
          ~~~~~~~~~~~~~~~~~~~~^^^^^
        File "/tmp/pip-build-env-93w0y5jy/overlay/lib/python3.14t/site-packages/setuptools/command/build_ext.py", line 264, in build_extension
          _build_ext.build_extension(self, ext)
          ~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
        File "/tmp/pip-build-env-93w0y5jy/overlay/lib/python3.14t/site-packages/setuptools/_distutils/command/build_ext.py", line 565, in build_extension
          objects = self.compiler.compile(
              sources,
          ...<5 lines>...
              depends=ext.depends,
          )
        File "/tmp/pip-install-wbb6yv4_/grpcio_16c7abd275f347f39b4dfc0857ff3892/src/python/grpcio/_parallel_compile_patch.py", line 70, in _parallel_compile
          multiprocessing.pool.ThreadPool(BUILD_EXT_COMPILER_JOBS).map(
          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
              _compile_single_file, objects
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
          )
          ^
        File "/root/.local/share/uv/python/cpython-3.14.0a6+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 367, in map
          return self._map_async(func, iterable, mapstar, chunksize).get()
                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
        File "/root/.local/share/uv/python/cpython-3.14.0a6+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 774, in get
          raise self._value
        File "/root/.local/share/uv/python/cpython-3.14.0a6+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 125, in worker
          result = (True, func(*args, **kwds))
                          ~~~~^^^^^^^^^^^^^^^
        File "/root/.local/share/uv/python/cpython-3.14.0a6+freethreaded-linux-x86_64-gnu/lib/python3.14t/multiprocessing/pool.py", line 48, in mapstar
          return list(map(*args))
        File "/tmp/pip-install-wbb6yv4_/grpcio_16c7abd275f347f39b4dfc0857ff3892/src/python/grpcio/_parallel_compile_patch.py", line 65, in _compile_single_file
          self._compile(obj, src, ext, cc_args, extra_postargs, pp_opts)
          ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-install-wbb6yv4_/grpcio_16c7abd275f347f39b4dfc0857ff3892/src/python/grpcio/commands.py", line 264, in new_compile
          return old_compile(obj, src, ext, cc_args, extra_postargs, pp_opts)
        File "/tmp/pip-build-env-93w0y5jy/overlay/lib/python3.14t/site-packages/setuptools/_distutils/compilers/C/unix.py", line 223, in _compile
          raise CompileError(msg)
      distutils.compilers.C.errors.CompileError: command '/usr/bin/c++' 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 grpcio
ERROR: Failed to build installable wheels for some pyproject.toml based projects (grpcio)

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.

PIC -I/tmp/tmpxanb9v14/venv/include -I/root/.local/share/uv/python/cpython-3.14.0a6+freethreaded-linux-x86_64-gnu/include/python3.14t -c lib/zoneinfo_module.c -o build/temp.linux-x86_64-cpython-314t/lib/zoneinfo_module.o -std=c99
      lib/zoneinfo_module.c: In function ‘zoneinfo_fromutc’:
      lib/zoneinfo_module.c:600:19: error: ‘_PyLong_One’ undeclared (first use in this function); did you mean ‘_PyLong_New’?
        600 |             one = _PyLong_One;
            |                   ^~~~~~~~~~~
            |                   _PyLong_New
      lib/zoneinfo_module.c:600:19: note: each undeclared identifier is reported only once for each function it appears in
      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 backports-zoneinfo
ERROR: Failed to build installable wheels for some pyproject.toml based projects (backports-zoneinfo)

*******************
              Please consider removing the following classifiers in favor of a SPDX license expression:
      
              License :: OSI Approved :: BSD License
      
              See https://packaging.python.org/en/latest/guides/writing-pyproject-toml/#license for details.
              ********************************************************************************
      
      !!
        self._finalize_license_expression()
      running bdist_wheel
      running build
      running build_py
      creating build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/__init__.py -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/_json_schema.py -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/_utils.py -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/_version.py -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/inspect.py -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/json.py -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/msgpack.py -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/structs.py -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/toml.py -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/yaml.py -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/__init__.pyi -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/json.pyi -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/msgpack.pyi -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/structs.pyi -> build/lib.linux-x86_64-cpython-314t/msgspec
      copying msgspec/py.typed -> build/lib.linux-x86_64-cpython-314t/msgspec
      UPDATING build/lib.linux-x86_64-cpython-314t/msgspec/_version.py
      set build/lib.linux-x86_64-cpython-314t/msgspec/_version.py to '0.19.0'
      running build_ext
      building 'msgspec._core' extension
      creating build/temp.linux-x86_64-cpython-314t/msgspec
      cc -pthread -fno-strict-overflow -Wsign-compare -Wunreachable-code -DNDEBUG -g -O3 -Wall -fPIC -fPIC -I/tmp/tmpq4frw_d1/venv/include -I/root/.local/share/uv/python/cpython-3.14.0a6+freethreaded-linux-x86_64-gnu/include/python3.14t -c msgspec/_core.c -o build/temp.linux-x86_64-cpython-314t/msgspec/_core.o
      msgspec/_core.c:2150:5: warning: braces around scalar initializer
       2150 |     { MS_IMMORTAL_INITIAL_REFCNT },
            |     ^
      msgspec/_core.c:2150:5: note: (near initialization for ‘_NoDefault_Object.ob_tid’)
      msgspec/_core.c:2151:5: warning: initialization of ‘short unsigned int’ from ‘PyTypeObject *’ {aka ‘struct _typeobject *’} makes integer from pointer without a cast [-Wint-conversion]
       2151 |     &NoDefault_Type
            |     ^
      msgspec/_core.c:2151:5: note: (near initialization for ‘_NoDefault_Object.ob_flags’)
      msgspec/_core.c:2151:5: error: initializer element is not computable at load time
      msgspec/_core.c:2151:5: note: (near initialization for ‘_NoDefault_Object.ob_flags’)
      msgspec/_core.c:2254:5: warning: braces around scalar initializer
       2254 |     { MS_IMMORTAL_INITIAL_REFCNT },
            |     ^
      msgspec/_core.c:2254:5: note: (near initialization for ‘_Unset_Object.ob_tid’)
      msgspec/_core.c:2255:5: warning: initialization of ‘short unsigned int’ from ‘PyTypeObject *’ {aka ‘struct _typeobject *’} makes integer from pointer without a cast [-Wint-conversion]
       2255 |     &Unset_Type
            |     ^
      msgspec/_core.c:2255:5: note: (near initialization for ‘_Unset_Object.ob_flags’)
      msgspec/_core.c:2255:5: error: initializer element is not computable at load time
      msgspec/_core.c:2255:5: note: (near initialization for ‘_Unset_Object.ob_flags’)
      msgspec/_core.c: In function ‘ms_passes_big_int_constraints’:
      msgspec/_core.c:9795:5: warning: ‘_PyLong_Sign’ is deprecated [-Wdeprecated-declarations]
       9795 |     bool neg = _PyLong_Sign(obj) < 0;
            |     ^~~~
      In file included from /root/.local/share/uv/python/cpython-3.14.0a6+freethreaded-linux-x86_64-gnu/include/python3.14t/longobject.h:119,
                       from /root/.local/share/uv/python/cpython-3.14.0a6+freethreaded-linux-x86_64-gnu/include/python3.14t/Python.h:83,
                       from msgspec/_core.c:9:
      /root/.local/share/uv/python/cpython-3.14.0a6+freethreaded-linux-x86_64-gnu/include/python3.14t/cpython/longobject.h:89:37: note: declared here
         89 | Py_DEPRECATED(3.14) PyAPI_FUNC(int) _PyLong_Sign(PyObject *v);
            |                                     ^~~~~~~~~~~~
      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 msgspec
ERROR: Failed to build installable wheels for some pyproject.toml based projects (msgspec)