pub fn try_init() -> Result<(), TryInitError>Expand description
Try to initialize the logging system.
Returns Ok(()) if successful, or Err if logging has already been
initialized.
This is the whole implementation; init is this plus a panic. The two used
to assemble the same filter and the same layer separately, and a change to
either had to be made twice — the with_ansi(false) above is there because
that is exactly what happened once already.