zed-industries/zed · error · anyhow::Error

not room participants

Error message

not room participants

What it means

check_room_participants counts room_participant rows for the leader and follower connections in the given room; when the count is short, at least one of the two connections is not a participant, and the sentinel 'not room participants' is returned.

Source

Thrown at crates/collab/src/db/queries/projects.rs:1332

            use room_participant::Column;

            let count = room_participant::Entity::find()
                .filter(
                    Condition::all().add(Column::RoomId.eq(room_id)).add(
                        Condition::any()
                            .add(Column::AnsweringConnectionId.eq(leader_id.id as i32).and(
                                Column::AnsweringConnectionServerId.eq(leader_id.owner_id as i32),
                            ))
                            .add(Column::AnsweringConnectionId.eq(follower_id.id as i32).and(
                                Column::AnsweringConnectionServerId.eq(follower_id.owner_id as i32),
                            )),
                    ),
                )
                .count(&*tx)
                .await?;

            if count < 2 {
                Err(anyhow!("not room participants"))?;
            }

            Ok(())
        })
        .await
    }

    /// Adds the given follower connection as a follower of the given leader connection.
    pub async fn follow(
        &self,
        room_id: RoomId,
        project_id: ProjectId,
        leader_connection: ConnectionId,
        follower_connection: ConnectionId,
    ) -> Result<TransactionGuard<proto::Room>> {
        self.room_transaction(room_id, |tx| async move {
            follower::ActiveModel {
                room_id: ActiveValue::set(room_id),

View on GitHub (pinned to f4178619ac)

Solutions

1. Ensure both leader and follower have joined the room before the operation
2. Retry after both participants are registered in the room

When it happens

Trigger: Thrown at crates/collab/src/db/queries/projects.rs:1332 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of zed-industries/zed@f4178619ac (2026-08-20). Data as JSON: /api/errors/bb2208a1e57dc4a9. Report an issue: GitHub.