Allow non-zero exit codes in nvm setup

See nvm-sh/nvm#721. NVM expects us to not
terminate even if it produces non-zero exit codes.

setup.py

@@ -2,7 +2,7 @@
 from setuptools import setup, find_packages
 
 setup(name='travis-runner',
-      version='0.3.0',
+      version='0.3.1',
       description='Local job runner for travis using docker',
       url='https://github.com/asmundg/travis-runner',
       author='Åsmund Grammeltvedt',

travis_runner/generate.py

@@ -68,6 +68,7 @@ def setup_system_env(env):
             0, 'echo "Acquire::http::Proxy \\"{}\\";" > /etc/apt/apt.conf'
             .format(proxy))
         env.insert(0, 'export http_proxy={}'.format(proxy))
+    env.insert(0, 'set -o errexit')
     env.insert(0, 'set -o pipefail')
 
 
@@ -132,7 +133,11 @@ def setup_node(config, envs):
             'curl --location'
             ' https://raw.github.com/creationix/nvm/master/nvm.sh'
             ' -o /tmp/nvm.sh')
+        # Disable error checking in NVM
+        # (https://github.com/creationix/nvm/issues/721)
+        setup.append('set +o errexit')
         setup.append('. /tmp/nvm.sh')
+        setup.append('set -o errexit')
         setup.append('nvm install {}'.format(version))
 
 

travis_runner/runner.py

@@ -21,7 +21,7 @@ def main():
         try:
             subprocess.check_call(
                 'docker run {} --rm -e http_proxy=$http_proxy -v $(pwd):/src'
-                '  ubuntu:precise bash -ex /src/{}'.format(
+                '  ubuntu:precise bash -x /src/{}'.format(
                     link_arg, env), shell=True)
         except subprocess.CalledProcessError:
             if links: