Update build from database at __exit__ (readthedocs#3292)

* Update build from database at __exit__

When an exception happens and it's handled by __exit__ our Build in
the database is not updated and it stay in 'Installing' forever. So,
when something bad happens we force a call to `update_build` with the
FINISHED state

Attempt to fix readthedocs#3285

* `update_build` when FINISHED in the right place

Author: humitos

.gitignore

@@ -44,3 +44,4 @@ private_*
 readthedocs/htmlcov
 tags
 .python-version
+*.pyo

readthedocs/projects/tasks.py

@@ -196,6 +196,7 @@ def run_setup(self, record=True):
             if not isinstance(self.setup_env.failure, vcs_support_utils.LockTimeout):
                 self.send_notifications()
 
+            self.setup_env.update_build(state=BUILD_STATE_FINISHED)
             return False
 
         if self.setup_env.successful and not self.project.has_valid_clone:
@@ -257,6 +258,8 @@ def run_build(self, docker=False, record=True):
 
         if self.build_env.failed:
             self.send_notifications()
+
+        self.build_env.update_build(state=BUILD_STATE_FINISHED)
         build_complete.send(sender=Build, build=self.build_env.build)
 
     @staticmethod