futures-join-macro-preview 0.3.0-alpha.19

Definition of the `join!` macro and the `try_join!` macro.

futures-join-macro-preview's sandbox limits

All the builds on docs.rs are executed inside a sandbox with limited resources. The limits for this crate are the following:

Available RAM 3 GB
Maximum rustdoc execution time 15 minutes
Maximum size of a build log 100 KB
Network access blocked
Maximum number of build targets 10

If a build fails because it hit one of those limits please open an issue to get them increased.