$ cat git-output-august-october-2018.txt | python3 -m group_by_exception --loader-type git --no-aggregate  | jq .
{
  "total": 1167689,
  "errors": {
    "FileNotFoundError(2, 'No such file or directory')": 648242,   // <- worker03 had a missing mount point, had the issue with mercurial loader
    "dulwich.errors.GitProtocolError: unexpected http resp 401 for": 403090,
    "psycopg2.extensions.QueryCanceledError: canceling statement due to statement timeout": 36628,
    "502 Bad Gateway": 34300,
    "gaierror(-3, 'Temporary failure in name resolution')": 17493,
    "consumer: Cannot connect to amqp": 6649,
    "pgbouncer cannot connect to server": 4811,
    "StorageAPIError(ConnectionError(MaxRetryError('None: Max retries exceeded with url: ": 3307,
    "Worker exited prematurely: signal 9": 2749,
    "MemoryError": 2164,
    "ValueError: invalid literal for int() with base 16: b''": 1898,
    "swh.objstorage.exc.ObjStorageAPIError: An unexpected error occurred in the api backend:": 1309,
    "OSError: Pack file too big for repository": 978,
    "TypeError: snapshot_add() got an unexpected keyword argument 'back_compat'": 890,
    "ConnectionResetError: [Errno 104] Connection reset by peer": 597,
    "socket.gaierror: [Errno -3] Temporary failure in name resolution": 563,
    "http.client.IncompleteRead:": 509,
    "dulwich.errors.NotGitRepository": 231,
    "BrokenPipeError: [Errno 32] Broken pipe": 208,
    "dulwich.errors.GitProtocolError: unexpected http resp 503": 168,
    "504 Gateway Time-out": 127,
    "dulwich.errors.ObjectFormatException: invalid literal for int() with base 10:": 115,
    "StorageDBError(OperationalError('could not connect to server: Connection refused": 113,
    "psycopg2.IntegrityError: duplicate key value violates unique constraint ": 102,
    "ConnectionResetError(104, 'Connection reset by peer')": 89,
    "psycopg2.InternalError: current transaction is aborted, commands ignored until end of transaction block": 53,
    "psycopg2.extensions.TransactionRollbackError: deadlock detected": 39,
    "psycopg2.IntegrityError: null value in column ": 38,
    "SSL connection has been closed unexpectedly": 29,
    "socket.gaierror: [Errno -5] No address associated with hostname": 25,
    "psycopg2.DatabaseError: server conn crashed?": 22,
    "ValueError: invalid literal for int() with base 16:": 20,
    "OSError(ConnectionRefusedError(111, 'Connection refused')": 15,
    "ValueError: year is out of range": 14,
    "KeyError": 14,
    "OSError(timeout('timed out',),)": 12,
    "OSError(113, 'No route to host')": 12,
    "dulwich.errors.GitProtocolError: unexpected http resp 500": 11,
    "TimeoutError: [Errno 110] Connection timed out": 8,
    "Worker exited prematurely: signal 15 (SIGTERM).',)": 6,
    "socket.gaierror: [Errno -2] Name or service not known": 5,
    "dulwich.errors.GitProtocolError: unexpected http resp 502 for": 4,
    "dulwich.errors.HangupException: The remote server unexpectedly closed the connection.": 4,
    "TimeoutError(110, 'Connection timed out')": 4,
    "OSError: [Errno 113] No route to host": 3,
    "ValueError: Wrong content type `text/html` for API response": 3,
    "psycopg2.OperationalError: terminating connection due to administrator command": 2,
    "OverflowError: timestamp out of range for platform time_t": 2,
    "amqp.exceptions.NotFound: Basic.publish: (404) NOT_FOUND": 2,
    "CONNECTION_FORCED - broker forced connection closure with reason": 2,
    "OSError(OSError(113, 'No route to host'),)": 2,
    "Timed out waiting for UP message from": 1,
    "psycopg2.OperationalError: index row size": 1,
    "dulwich.errors.ObjectFormatException: Unknown field": 1,
    "dulwich.errors.GitProtocolError: unexpected http resp 429": 1,
    "gaierror(-2, 'Name or service not known')": 1,
    "OSError(5, 'Input/output error')": 1,
    "msgpack.exceptions.UnpackValueError: Unpack failed: error = 0": 1,
    "ValueError: not enough values to unpack": 1
  }
}