[backend] Output warning messages in case admins need to be informed

beat/web/backend/models.py

@@ -448,6 +448,7 @@ class Worker(models.Model):
                             j.job.block.name,
                             j.job.block.experiment.fullname(),
                             )
+                    logger.warn(message)
                     j.end(Result(status=1, usrerr=settings.DEFAULT_USER_ERROR,
                       syserr=message))
 
@@ -476,6 +477,7 @@ class Worker(models.Model):
                             "Available environments are `%s'" % \
                                 '|'.join(environments.keys()),
                                 )
+                    logger.warn(message)
                     split.end(Result(status=1,
                       usrerr=settings.DEFAULT_USER_ERROR, syserr=message))
                     continue