Shouldn't failure conditions return Err?

[AeriaVelocity]

I looked at the source for nop_clipboard.rs, and this doesn't seem right:

impl ClipboardProvider for NopClipboardContext {
    fn new() -> Result<NopClipboardContext, Box<Error>> {
        Ok(NopClipboardContext)
    }
    fn get_contents(&mut self) -> Result<String, Box<Error>> {
        println!("Attempting to get the contents of the clipboard, which hasn't yet been \
                  implemented on this platform.");
        Ok("".to_string())
    }
    fn set_contents(&mut self, _: String) -> Result<(), Box<Error>> {
        println!("Attempting to set the contents of the clipboard, which hasn't yet been \
                  implemented on this platform.");
        Ok(())
    }
}

Shouldn't this return Err, not Ok? It's kind of a pain to deal with an error condition that indicates success