Bug#895890: pandas: FTBFS on mips and powerpc: test_unstack_odd_failure crashes

[Graham Inggs]

Source: pandas
Version: 0.22.0-2
Severity: serious

Hi Science Team

Since the upload of 0.22.0-2, pandas has FTBFS on mips and powerpc with 
errors similar to the following:

../debian/tmp/usr/lib/python2.7/dist-packages/pandas/tests/test_multilevel.py::TestMultiLevel::test_unstack_odd_failure 
realloc(): invalid next size
Aborted
XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":99"

make[1]: *** [debian/rules:127: python-test2.7] Error 134
make[1]: Leaving directory '/<<PKGBUILDDIR>>'

The errors I have found in the build logs are:
realloc(): invalid next size
malloc(): smallbin double linked list corrupted
Segmentation fault
corrupted double-linked list

Pandas 0.22.0-1 failed for an unrelated reason.
The test_unstack_odd_failure did not fail with any of the 0.20.3-* 
uploads (it either passed, or the build failed for other reasons).

I'm marking this serious as the failure on mips prevents the migration 
of pandas to testing.

Regards
Graham