diff --git a/doc/source/developer/datamodel.rst b/doc/source/developer/datamodel.rst
index 9df6505..2996ff4 100644
--- a/doc/source/developer/datamodel.rst
+++ b/doc/source/developer/datamodel.rst
@@ -26,12 +26,12 @@
 
 A :py:class:`~zuul.model.Job` represents the definition of what to do. A
 :py:class:`~zuul.model.Build` represents a single run of a
-:py:class:`~zuul.model.Job`. A :py:class:`~zuul.model.JobTree` is used to
+:py:class:`~zuul.model.Job`. A :py:class:`~zuul.model.JobGraph` is used to
 encapsulate the dependencies between one or more :py:class:`~zuul.model.Job`
 objects.
 
 .. autoclass:: zuul.model.Job
-.. autoclass:: zuul.model.JobTree
+.. autoclass:: zuul.model.JobGraph
 .. autoclass:: zuul.model.Build
 
 The :py:class:`~zuul.manager.base.PipelineManager` enqueues each
@@ -48,7 +48,6 @@
 Changes
 ~~~~~~~
 
-.. autoclass:: zuul.model.Changeish
 .. autoclass:: zuul.model.Change
 .. autoclass:: zuul.model.Ref
 
diff --git a/doc/source/developer/testing.rst b/doc/source/developer/testing.rst
index 092754f..4a813d0 100644
--- a/doc/source/developer/testing.rst
+++ b/doc/source/developer/testing.rst
@@ -19,7 +19,7 @@
 .. autoclass:: tests.base.FakeGearmanServer
    :members:
 
-.. autoclass:: tests.base.RecordingLaunchServer
+.. autoclass:: tests.base.RecordingExecutorServer
    :members:
 
 .. autoclass:: tests.base.FakeBuild
diff --git a/setup.cfg b/setup.cfg
index 86ebf65..9ee64f3 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -31,6 +31,7 @@
 source-dir = doc/source
 build-dir = doc/build
 all_files = 1
+warning-is-error = 1
 
 [extras]
 mysql_reporter=
diff --git a/test-requirements.txt b/test-requirements.txt
index b99c803..6262a02 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,7 +1,7 @@
 hacking>=0.12.0,!=0.13.0,<0.14  # Apache-2.0
 
 coverage>=3.6
-sphinx>=1.1.2,!=1.2.0,!=1.3b1,<1.3
+sphinx>=1.5.1
 sphinxcontrib-blockdiag>=1.1.0
 fixtures>=0.3.14
 python-keystoneclient>=0.4.2
diff --git a/tests/base.py b/tests/base.py
index 2816b9f..9bd44f6 100755
--- a/tests/base.py
+++ b/tests/base.py
@@ -664,8 +664,8 @@
         """Return whether this build has certain changes in its git repos.
 
         :arg FakeChange changes: One or more changes (varargs) that
-        are expected to be present (in order) in the git repository of
-        the active project.
+            are expected to be present (in order) in the git repository of
+            the active project.
 
         :returns: Whether the build has the indicated changes.
         :rtype: bool
@@ -1970,7 +1970,7 @@
             this method.
 
         :arg str connection: The name of the connection corresponding
-        to the gerrit server.
+            to the gerrit server.
         :arg str event: The JSON-encoded event.
 
         """