Bug#894623: numexpr FTBFS with dh-python >= 3.20180313

[Adrian Bunk]

Source: numexpr
Version: 2.6.4-1
Severity: serious

https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/numexpr.html

...
make[1]: Entering directory '/build/1st/numexpr-2.6.4'
pyversions: missing X(S)-Python-Version in control file, fall back to debian/pyversions
py3versions: no X-Python3-Version in control file, using supported versions
set -e -x;\
for py in 2.7 3.6; do \
	cd /build/1st/numexpr-2.6.4/.pybuild/pythonX.Y_$py/build;\
	env PYTHONPATH=. python$py numexpr/tests/test_numexpr.py -v;\
	cd /build/1st/numexpr-2.6.4/.pybuild/pythonX.Y-dbg_$py/build;\
	env PYTHONPATH=. python$py-dbg numexpr/tests/test_numexpr.py -v;\
done
+ cd /build/1st/numexpr-2.6.4/.pybuild/pythonX.Y_2.7/build
/bin/sh: 3: cd: can't cd to /build/1st/numexpr-2.6.4/.pybuild/pythonX.Y_2.7/build
make[1]: *** [debian/rules:36: override_dh_auto_test] Error 2