missing `error` variant?

[remexre]

INFO :tri::controller::rtm : Connected to Slack!
INFO :slack                : Unable to deserialize slack message, error: Json Error: ErrorImpl { code: Message("unknown variant `error`, expected one of `hello`, `message`, `user_typing`, `channel_marked`, `channel_created`, `channel_joined`, `channel_left`, `channel_deleted`, `channel_rename`, `channel_archive`, `channel_un_archive`, `channel_history_changed`, `im_created`, `im_open`, `im_close`, `im_marked`, `im_history_changed`, `group_joined`, `group_left`, `group_open`, `group_close`, `group_archive`, `group_un_archive`, `group_rename`, `group_marked`, `group_history_changed`, `file_created`, `file_shared`, `file_un_shared`, `file_public`, `file_private`, `file_change`, `file_deleted`, `file_comment_added`, `file_comment_edited`, `file_comment_deleted`, `pin_added`, `pin_removed`, `presence_change`, `manual_presence_change`, `pref_change`, `user_change`, `team_join`, `star_added`, `star_removed`, `reaction_added`, `re
INFO :slack                : Unable to deserialize slack message, error: Json Error: ErrorImpl { code: Message("missing field `type`"), line: 1, column: 2 }: json: {}
ERROR:tri::controller      : Websocket Error: Protocol("Connection reset without closing handshake")

Source of Tri, just in case I'm using the library incorrectly or something.

[dten]

Not sure what's happening. Can't see anything obviously wrong from browsing your source.

The json you're getting seems to be {}, is the first message longer?

[remexre]

Oh, huh, seems like papertrail truncated the logs. The full entry there is:

INFO :slack                             : Unable to deserialize slack message, error: Json Error: ErrorImpl { code: Message("unknown variant `error`, expected one of `hello`, `message`, `user_typing`, `channel_marked`, `channel_created`, `channel_joined`, `channel_left`, `channel_deleted`, `channel_rename`, `channel_archive`, `channel_un_archive`, `channel_history_changed`, `im_created`, `im_open`, `im_close`, `im_marked`, `im_history_changed`, `group_joined`, `group_left`, `group_open`, `group_close`, `group_archive`, `group_un_archive`, `group_rename`, `group_marked`, `group_history_changed`, `file_created`, `file_shared`, `file_un_shared`, `file_public`, `file_private`, `file_change`, `file_deleted`, `file_comment_added`, `file_comment_edited`, `file_comment_deleted`, `pin_added`, `pin_removed`, `presence_change`, `manual_presence_change`, `pref_change`, `user_change`, `team_join`, `star_added`, `star_removed`, `reaction_added`, `reaction_removed`, `emoji_changed`, `commands_changed`, `team_plan_change`, `team_pref_change`, `team_rename`, `team_domain_change`, `email_domain_changed`, `bot_added`, `bot_changed`, `accounts_changed`, `team_migration_started`, `reconnect_url`, `message_sent`, `message_error`, `desktop_notification`"), line: 1, column: 15 }: json: {"type":"error","error":{"msg":"Socket URL has expired","code":1}}

[dten]

https://api.slack.com/rtm says that error occurs if you were too slow to connect after receiving the socket url or tried to use it twice