travis: Debugging failing tests.

.travis.yml

@@ -16,4 +16,7 @@ script:
   - make -C stmhal
   - cd tests && MICROPY_CPYTHON3=python3.3 ./run-tests
 
-after_failure: cd tests && for exp in *.exp; do testbase=$(basename $exp .exp); echo -e "\nFAILURE $testbase"; diff $testbase.exp $testbase.out; done
+after_failure:
+  - cat tests/memoryerror.py.exp
+  - cat tests/memoryerror.py.out
+  - cd tests && for exp in *.exp; do testbase=$(basename $exp .exp); echo -e "\nFAILURE $testbase"; diff $testbase.exp $testbase.out; done

tests/basics/memoryerror.py

 l = list(range(10000))
+hex(1)
 try:
     100000000 * l
 except MemoryError: