[IMP] runbot_merge, forwardport: update some logging

Downgrade an error and a warning to info, and upgrade two warnings to
error.

Point is to improve logic of log levels & sentry visibility.

Fixes #258

forwardport/models/project.py

@@ -74,7 +74,7 @@ class Project(models.Model):
                 'Authorization': 'token %s' % project.fp_github_token
             })
             if not (r0.ok and r1.ok):
-                _logger.warning("Failed to fetch bot information for project %s: %s", project.name, (r0.text or r0.content) if not r0.ok else (r1.text or r1.content))
+                _logger.error("Failed to fetch bot information for project %s: %s", project.name, (r0.text or r0.content) if not r0.ok else (r1.text or r1.content))
                 continue
             project.fp_github_name = r0.json()['login']
             project.fp_github_email = next((
@@ -587,7 +587,7 @@ class PullRequests(models.Model):
 
         notarget = [p.repository.name for p in self if not p.repository.fp_remote_target]
         if notarget:
-            _logger.warning(
+            _logger.error(
                 "Can not forward-port %s: repos %s don't have a remote configured",
                 self, ', '.join(notarget)
             )

runbot_merge/controllers/__init__.py

@@ -160,7 +160,7 @@ def handle_pr(env, event):
 
     pr_obj = env['runbot_merge.pull_requests']._get_or_schedule(r, pr['number'])
     if not pr_obj:
-        _logger.warning("webhook %s on unknown PR %s#%s, scheduled fetch", event['action'], repo.name, pr['number'])
+        _logger.info("webhook %s on unknown PR %s#%s, scheduled fetch", event['action'], repo.name, pr['number'])
         return "Unknown PR {}:{}, scheduling fetch".format(repo.name, pr['number'])
     if event['action'] == 'synchronize':
         if pr_obj.head == pr['head']['sha']:

runbot_merge/models/pull_requests.py

@@ -1691,7 +1691,7 @@ class Stagings(models.Model):
         })
 
     def fail(self, message, prs=None):
-        _logger.error("Staging %s failed: %s", self, message)
+        _logger.info("Staging %s failed: %s", self, message)
         prs = prs or self.batch_ids.prs
         prs.write({'state': 'error'})
         for pr in prs: