TEST: debug test_terminal failures

Author: blueyed

.travis.yml

@@ -39,7 +39,7 @@ jobs:
     # - old attrs
     # - verbose=0
     # - test_sys_breakpoint_interception (via pexpect).
-    - env: TOXENV=py37-lsof-numpy-oldattrs-pexpect-twisted PYTEST_COVERAGE=1 PYTEST_ADDOPTS=
+    - env: TOXENV=py37-lsof-numpy-oldattrs-pexpect-twisted PYTEST_COVERAGE=1 PYTEST_ADDOPTS=-vv
       python: '3.7'
 
     # Coverage for Python 3.5.{0,1} specific code, mostly typing related.