Damnit.

MariaDB [(none)]> show slave status\G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.1.1.42
                  Master_User: repl_user
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: drupal-db5-binlog.041531
          Read_Master_Log_Pos: 4814904
               Relay_Log_File: relay-bin.000077
                Relay_Log_Pos: 8668522
        Relay_Master_Log_File: drupal-db5-binlog.041529
             Slave_IO_Running: Yes
            Slave_SQL_Running: No
              Replicate_Do_DB:
          Replicate_Ignore_DB:
           Replicate_Do_Table:
       Replicate_Ignore_Table:
      Replicate_Wild_Do_Table:
  Replicate_Wild_Ignore_Table:
                   Last_Errno: 1032
                   Last_Error: Could not execute Delete_rows_v1 event on table drupal.cache_metatag; Can't find record in 'cache_metatag', Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND; the event's master log drupal-db5-binlog.041529, end_log_pos 27856782
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 27529678
              Relay_Log_Space: 195677892
              Until_Condition: None
               Until_Log_File:
                Until_Log_Pos: 0
           Master_SSL_Allowed: No
           Master_SSL_CA_File:
           Master_SSL_CA_Path:
              Master_SSL_Cert:
            Master_SSL_Cipher:
               Master_SSL_Key:
        Seconds_Behind_Master: NULL
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error:
               Last_SQL_Errno: 1032
               Last_SQL_Error: Could not execute Delete_rows_v1 event on table drupal.cache_metatag; Can't find record in 'cache_metatag', Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND; the event's master log drupal-db5-binlog.041529, end_log_pos 27856782
  Replicate_Ignore_Server_Ids:
             Master_Server_Id: 5
               Master_SSL_Crl:
           Master_SSL_Crlpath:
                   Using_Gtid: No
                  Gtid_IO_Pos:
1 row in set (0.00 sec)