# Libtmux.Output.Failure

- **Module:** Libtmux.Output
- **Package:** libtmux
- **Language:** OCaml
- **Kind:** constant
- **Source:** https://github.com/libtmux/libtmux-ocaml/blob/205dfda49742592b479247049d186956e4a4cfe9/lib/libtmux.mli#L1063
- **Public owner:** Libtmux
- **Page:** https://libtmux.org/en/ocaml/latest/reference/libtmux-output-wait_error-failure/

A future-byte wait either loses its subscription's continuity or fails an operation. Neither result establishes that the text was absent earlier.