This project was scheduled for deletion, but failed with the following message:
PG::TRDeadlockDetected: ERROR: deadlock detected
DETAIL: Process 1480392 waits for ShareLock on transaction 270718; blocked by process 1480391.
Process 1480391 waits for ShareLock on transaction 270717; blocked by process 1480392.
HINT: See server log for query details.
CONTEXT: while deleting tuple (38,20) in relation "events"
SQL statement "DELETE FROM ONLY "public"."events" WHERE $1 OPERATOR(pg_catalog.=) "project_id""
The project visibility may have been made more restrictive if the parent group's visibility changed while the deletion was scheduled.