Read the Docs build information Build id: 52231 Project: citrix-netscaler-advanced-policy-expression-reference Version: latest Commit: afc8c1bd072bd146080474c7a83118b7e6d309a7 Date: 2017-07-03T15:53:56.628224Z State: finished Success: False [rtd-command-info] start-time: 2017-07-03T20:52:57.788569Z, end-time: 2017-07-03T20:52:57.904050Z, duration: 0, exit-code: 1 python2.7 -mvirtualenv --no-site-packages --no-download New python executable in /home/docs/checkouts/readthedocs.org/user_builds/citrix-netscaler-advanced-policy-expression-reference/envs/latest/bin/python2.7 Traceback (most recent call last): File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main "__main__", fname, loader, pkg_name) File "/usr/lib/python2.7/runpy.py", line 72, in _run_code exec code in run_globals File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 2328, in main() File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 713, in main symlink=options.symlink) File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 925, in create_environment site_packages=site_packages, clear=clear, symlink=symlink)) File "/usr/local/lib/python2.7/dist-packages/virtualenv.py", line 1231, in install_python shutil.copyfile(executable, py_executable) File "/usr/lib/python2.7/shutil.py", line 83, in copyfile with open(dst, 'wb') as fdst: IOError: [Errno 26] Text file busy: '/home/docs/checkouts/readthedocs.org/user_builds/citrix-netscaler-advanced-policy-expression-reference/envs/latest/bin/python2.7'