All CI job are failing

[NicolasHug]

e.g. https://github.com/pytorch/vision/actions/runs/8141135591/job/22247761309

  Traceback (most recent call last):
    File "/pytorch/vision/test/smoke_test.py", line 7, in <module>
      import torchvision
    File "/pytorch/vision/torchvision/__init__.py", line 6, in <module>
      from torchvision import _meta_registrations, datasets, io, models, ops, transforms, utils
    File "/pytorch/vision/torchvision/models/__init__.py", line 2, in <module>
      from .convnext import *
    File "/pytorch/vision/torchvision/models/convnext.py", line 8, in <module>
      from ..ops.misc import Conv2dNormActivation, Permute
    File "/pytorch/vision/torchvision/ops/__init__.py", line 23, in <module>
      from .poolers import MultiScaleRoIAlign
    File "/pytorch/vision/torchvision/ops/poolers.py", line 10, in <module>
      from .roi_align import roi_align
    File "/pytorch/vision/torchvision/ops/roi_align.py", line 4, in <module>
      import torch._dynamo
    File "/opt/conda/envs/ci/lib/python3.9/site-packages/torch/_dynamo/__init__.py", line 2, in <module>
      from . import convert_frame, eval_frame, resume_execution
    File "/opt/conda/envs/ci/lib/python3.9/site-packages/torch/_dynamo/convert_frame.py", line 31, in <module>
      from torch.fx.experimental.symbolic_shapes import (
    File "/opt/conda/envs/ci/lib/python3.9/site-packages/torch/fx/experimental/symbolic_shapes.py", line 63, in <module>
      from torch.utils._sympy.functions import FloorDiv, Mod, IsNonOverlappingAndDenseIndicator
    File "/opt/conda/envs/ci/lib/python3.9/site-packages/torch/utils/_sympy/functions.py", line 1, in <module>
      import sympy
    File "/opt/conda/envs/ci/lib/python3.9/site-packages/sympy/__init__.py", line 30, in <module>
      from sympy.core.cache import lazy_function
    File "/opt/conda/envs/ci/lib/python3.9/site-packages/sympy/core/__init__.py", line 9, in <module>
  Traceback (most recent call last):
    File "/home/ec2-user/actions-runner/_work/vision/vision/test-infra/.github/scripts/run_with_env_secrets.py", line 100, in <module>
      main()
    File "/home/ec2-user/actions-runner/_work/vision/vision/test-infra/.github/scripts/run_with_env_secrets.py", line 96, in main
      run_cmd_or_die(f"docker exec -t {container_name} /exec")
    File "/home/ec2-user/actions-runner/_work/vision/vision/test-infra/.github/scripts/run_with_env_secrets.py", line 38, in run_cmd_or_die
      raise RuntimeError(f"Command {cmd} failed with exit code {exit_code}")
  RuntimeError: Command docker exec -t a54479f4bb64811255ff0c9e7db93fbc369ef516bfc5be032a430222e6c2499a /exec failed with exit code 1
      from .expr import Expr, AtomicExpr, UnevaluatedExpr
    File "/opt/conda/envs/ci/lib/python3.9/site-packages/sympy/core/expr.py", line 4159, in <module>
      from .mul import Mul
    File "/opt/conda/envs/ci/lib/python3.9/site-packages/sympy/core/mul.py", line 2193, in <module>
      from .numbers import Rational
    File "/opt/conda/envs/ci/lib/python3.9/site-packages/sympy/core/numbers.py", line 4567, in <module>
      _sympy_converter[type(mpmath.rational.mpq(1, 2))] = sympify_mpmath_mpq
  AttributeError: module 'mpmath' has no attribute 'rational'

@vmoens 's investigations suggest that the --pre flag in our pip install command will also install the newly pre-released mpmath-1.4.0a0 which leads to the above error.

(PR in torchRL: pytorch/rl#1988)