pub fn spawn_supervised(f: ~fn())
Creates a child task supervised by the current one. If the child task fails, the parent will not be killed, but if the parent fails, the child will be killed.
Prefix searches with a type followed by a colon (e.g.
fn:) to restrict the search to a given type.
Accepted types are: fn, mod,
struct (or str), enum,
trait, typedef (or
tdef).