rocket_contrib does not compile on latest nightly (8a37c75a3 2018-05-02)

[tim3z]

As it seems the #![feature(macro_reexport)] has been removed in the latest nightly - so rocket_contrib does not compile anymore...

Checking rocket_contrib v0.3.9
error[E0557]: feature has been removed
 --> /home/.../.cargo/registry/src/github.com-1ecc6299db9ec823/rocket_contrib-0.3.9/src/lib.rs:1:12
  |
1 | #![feature(macro_reexport)]
  |            ^^^^^^^^^^^^^^
  |
note: subsumed by `#![feature(use_extern_macros)]` and `pub use`
 --> /home/.../.cargo/registry/src/github.com-1ecc6299db9ec823/rocket_contrib-0.3.9/src/lib.rs:1:12
  |
1 | #![feature(macro_reexport)]
  |            ^^^^^^^^^^^^^^

error[E0658]: The attribute `macro_reexport` is currently unknown to the compiler and may have meaning added to it in the future (see issue #29642)
  --> /home/.../.cargo/registry/src/github.com-1ecc6299db9ec823/rocket_contrib-0.3.9/src/lib.rs:47:30
   |
47 | #[cfg_attr(feature = "json", macro_reexport(json_internal))]
   |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: add #![feature(custom_attribute)] to the crate attributes to enable

error: aborting due to 2 previous errors

Some errors occurred: E0557, E0658.
For more information about an error, try `rustc --explain E0557`.
error: Could not compile `rocket_contrib`.

[tim3z]

See rust-lang/rust#49982

[tim3z]

Ah never mind #624 already fixes this