Build fails with non-informative traceback from subprocess

[cdeil]

I think this is the same issue as #627 from January.

It happened to the PDF build for me today after I wiped my project earlier today:
https://readthedocs.org/builds/gammapy/1615772/

The only error message displayed is this which doesn't give me any clue what the problem is or what I have to do to fix it:

Traceback (most recent call last):
  File "/home/docs/checkouts/readthedocs.org/readthedocs/projects/utils.py", line 85, in run
    stderr=subprocess.PIPE, env=environment)
  File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1327, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

[ericholscher]

Yea, we have a plan to fix the build output. Not sure why that particular error is happening though. I will look into it.

[barnumbirr]

Hi there,

I'm encountering the same error and the error message:

Traceback (most recent call last):
  File "/www/readthedocs.org/readthedocs/projects/utils.py", line 85, in run
    stderr=subprocess.PIPE, env=environment)
  File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1335, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory
Traceback (most recent call last):
  File "/www/readthedocs.org/readthedocs/projects/utils.py", line 85, in run
    stderr=subprocess.PIPE, env=environment)
  File "/usr/lib/python2.7/subprocess.py", line 710, in __init__
    errread, errwrite)
  File "/usr/lib/python2.7/subprocess.py", line 1335, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

Cheers.

[kwisatz]

Having the same issue here and I saw that we're not alone in this. Looking at some Google search results, many builds on readthedocs.org seem to experience this as well.
Does anybody know whether this is an issue with pip (as was mentioned in some related issues) or rather with pdflatex?
From the error trace, it is not really clear which file or directory is missing, so I'm not too sure where to start looking.

[ericholscher]

Closing this, but in general we're working to fix the build system so these issues won't happen anymore