I have set the Octave Forge tests to run every week, since the complete run of all tests should take nearly a day. It has recently been hanging, though, with an error about closing an IPC pipe:
Running some tests that reset the IPC and produce output
Resetting the octsympy communication mechanism
Closing the Python pipe…
Build was aborted
Earlier in the log there is a message
OctSymPy: Communication established. SymPy v0.7.6.
skipping: char(x) of assumptions suboptimal in <= 0.7.6
So it is worth updating to the latest version of SymPy anyway, and, if we’re lucky, that will fix the IPC problem too.