Crate send_sync_static 

A very basic crate, whose only purpose is to allow marking types Send, Sync, and 'static

Traits

FutureSSS

A marker which identifies a Future (but not necessarily its output) as Send, Sync, and 'static.

SSS

A marker which identifies a type as Send, Sync, and 'static. This trait is automatically implemented for any types which fulfill these requirements, and it is intended to be used as a shorthand for writing out each bound. For example: