Keep command output when it's killed

readthedocs/doc_builder/environments.py

@@ -3,10 +3,13 @@
 """Documentation Builder Environments."""
 
 from __future__ import (
-    absolute_import, division, print_function, unicode_literals)
+    absolute_import,
+    division,
+    print_function,
+    unicode_literals,
+)
 
 import logging
-import json
 import os
 import re
 import socket
@@ -32,13 +35,28 @@
 from readthedocs.restapi.client import api as api_v2
 
 from .constants import (
-    DOCKER_HOSTNAME_MAX_LEN, DOCKER_IMAGE, DOCKER_LIMITS, DOCKER_OOM_EXIT_CODE,
-    DOCKER_SOCKET, DOCKER_TIMEOUT_EXIT_CODE, DOCKER_VERSION,
-    MKDOCS_TEMPLATE_DIR, SPHINX_TEMPLATE_DIR)
+    DOCKER_HOSTNAME_MAX_LEN,
+    DOCKER_IMAGE,
+    DOCKER_LIMITS,
+    DOCKER_OOM_EXIT_CODE,
+    DOCKER_SOCKET,
+    DOCKER_TIMEOUT_EXIT_CODE,
+    DOCKER_VERSION,
+    MKDOCS_TEMPLATE_DIR,
+    SPHINX_TEMPLATE_DIR,
+)
 from .exceptions import (
-    BuildEnvironmentCreationFailed, BuildEnvironmentError,
-    BuildEnvironmentException, BuildEnvironmentWarning, BuildTimeoutError,
-    ProjectBuildsSkippedError, VersionLockedError, YAMLParseError, MkDocsYAMLParseError)
+    BuildEnvironmentCreationFailed,
+    BuildEnvironmentError,
+    BuildEnvironmentException,
+    BuildEnvironmentWarning,
+    BuildTimeoutError,
+    MkDocsYAMLParseError,
+    ProjectBuildsSkippedError,
+    VersionLockedError,
+    YAMLParseError,
+)
+
 
 log = logging.getLogger(__name__)
 
@@ -295,8 +313,9 @@ def run(self):
             # is in the last 15 lines of the command's output
             killed_in_output = 'Killed' in '\n'.join(self.output.splitlines()[-15:])
             if self.exit_code == DOCKER_OOM_EXIT_CODE or (self.exit_code == 1 and killed_in_output):
-                self.output = _('Command killed due to excessive memory '
-                                'consumption\n')
+                self.output += str(_(
+                    'Command killed due to excessive memory consumption\n'
+                ))
         except DockerAPIError:
             self.exit_code = -1
             if self.output is None or not self.output:

readthedocs/rtd_tests/tests/test_doc_building.py

@@ -6,7 +6,11 @@
 * the Command wrappers encapsulate the bytes and expose unicode
 """
 from __future__ import (
-    absolute_import, division, print_function, unicode_literals)
+    absolute_import,
+    division,
+    print_function,
+    unicode_literals,
+)
 
 import json
 import os
@@ -27,15 +31,19 @@
 from readthedocs.builds.models import Version
 from readthedocs.doc_builder.config import load_yaml_config
 from readthedocs.doc_builder.environments import (
-    BuildCommand, DockerBuildCommand, DockerBuildEnvironment,
-    LocalBuildEnvironment)
+    BuildCommand,
+    DockerBuildCommand,
+    DockerBuildEnvironment,
+    LocalBuildEnvironment,
+)
 from readthedocs.doc_builder.exceptions import BuildEnvironmentError
 from readthedocs.doc_builder.python_environments import Conda, Virtualenv
 from readthedocs.projects.models import Project
 from readthedocs.rtd_tests.mocks.environment import EnvironmentMockGroup
 from readthedocs.rtd_tests.mocks.paths import fake_paths_lookup
 from readthedocs.rtd_tests.tests.test_config_integration import create_load
 
+
 DUMMY_BUILD_ID = 123
 SAMPLE_UNICODE = u'HérÉ îß sömê ünïçó∂é'
 SAMPLE_UTF8_BYTES = SAMPLE_UNICODE.encode('utf-8')
@@ -1127,9 +1135,10 @@ def test_command_oom_kill(self):
         cmd.build_env.get_client.return_value = self.mocks.docker_client
         type(cmd.build_env).container_id = PropertyMock(return_value='foo')
         cmd.run()
-        self.assertEqual(
-            str(cmd.output),
-            u'Command killed due to excessive memory consumption\n')
+        self.assertIn(
+            'Command killed due to excessive memory consumption\n',
+            str(cmd.output)
+        )
 
 
 class TestPythonEnvironment(TestCase):