pipex: If a test gives a timeout while executing, the program errors out with a "NoneType"

[xicodomingues]

I should handle the timeouts more gracefully.

Also while at it, put some tests under strict (the weirder ones)

[luguimar]

Hello!! What are the tests 6 and 8 in pipex?? My pipex does not pass in this two and I would like to know how to resolve it...
I also get the "'NoneType' object has no attribute 'stderr'". Thankyou!

[TianhengQin]

for test 6

./pipex infile.txt 'sed "s/And/But/"' "awk '{count++} END {printf "count: %i", count}'" outfile.txt

should exec like this

[Tilidien]

So this happens when Test 9 timouts? got that right now and im not shure what to do.