pub fn try<T: Send>(f: proc(): Send -> T) -> Result<T, Box<Any + Send>>
Execute a function in a newly-spawned task and return either the return value of the function or an error if the task failed.
This is equivalent to TaskBuilder::new().try.
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).