Compilation error on nightly rust

[TerminalWitchcraft]

Rocket fails to compile on latest(as of writing this) version of nightly rust. The version of rust used is:

rustc 1.37.0-nightly (17e62f77f 2019-07-01)

Below is the error:

error[E0432]: unresolved import `std::boxed::FnBox`
 --> /home/[username]/.cargo/registry/src/github.com-1ecc6299db9ec823/rocket-0.4.1/src/fairing/ad_hoc.rs:2:5
  |
2 | use std::boxed::FnBox;
  |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`

   Compiling reqwest v0.9.18
error: aborting due to previous error

For more information about this error, try `rustc --explain E0432`.
error: Could not compile `rocket`.
warning: build failed, waiting for other jobs to finish...
error: build failed

Any help would be appreciated.

[perlish]

same issue after update with rustup

[doctorn]

Updating to 0.4.2 fixed this for me.

[SergioBenitez]

Please update to Rocket 0.4.2. Running cargo update should do it for you.

[perlish]

0.4.2 fixed this for me.