Strange pipeline failure copying file

Sometime I see this: https://gitlab.com/tango-controls/pytango/-/jobs/10759926290#L749 , https://gitlab.com/tango-controls/pytango/-/jobs/10760293566#L746

  [64/64] /opt/conda/bin/cmake -E cmake_symlink_library _tango.so.10.1.0.0  _tango.so.10 _tango.so && :
  *** Installing project into wheel...
  -- Install configuration: "Release"
  -- Installing: /tmp/tmpn6x8evz4/wheel/platlib/tango/_tango.so.10.1.0.0
  -- Installing: /tmp/tmpn6x8evz4/wheel/platlib/tango/_tango.so.10
  -- Installing: /tmp/tmpn6x8evz4/wheel/platlib/tango/_tango.so
  Generating .pyi stub files.
  CMake Error at cmakebuild/cmake_install.cmake:86 (file):
    file COPY cannot copy file
    "/builds/tango-controls/pytango/cmakebuild/_tango.so.10.1.0.0" to
    "/builds/tango-controls/pytango/tango/_tango.so.10.1.0.0": Permission
    denied.
  *** CMake install failed
  error: subprocess-exited-with-error

After restart it works. Needs to be investigated