# mcp.exec.WaitOutcome.StreamLost

**MCP concept example** A working example of the core library. It can change without notice.

- **Module:** mcp.exec
- **Package:** tmux-mcp
- **Language:** Rust
- **Kind:** constant
- **Source:** https://github.com/libtmux/libtmux-rs/blob/2c165c4433d1bdb747a350bd460364daa4a06a55/crates/tmux-mcp/src/exec.rs#L127
- **Page:** https://libtmux.org/en/rs/latest/mcp/reference/mcp-exec-waitoutcome-streamlost/

```
StreamLost
```

The control stream ended while the pane was still alive, for example because its client was detached.

Nothing says the pane stopped, only that this wait can no longer see
it. Wait again to watch it afresh; `text` holds the output seen up to
the loss. The polling path, used below tmux 3.7, has no stream to lose.