Firefox failing to build due to rustc update

[jonringer]

Firefox is faililng to build due to log limit being exceeded.

see: https://hydra.nixos.org/build/105989750/nixlog/1

cc @worldofpeace @taku0

[taku0]

The last words in the log:
https://hydra.nixos.org/build/105989490/nixlog/1/raw

error[E0204]: the trait `Copy` may not be implemented for this type
  --> /build/firefox-70.0.1/obj-x86_64-pc-linux-gnu/x86_64-unknown-linux-gnu/release/build/style-c564edf60d55a972/out/gecko/structs.rs:23:287610
   |
23 | # [ allow ( non_snake_case , non_camel_case_types , non_upper_case_globals ) ] ...

Maybe this commit affects the problem.

commit 14ee26ccf5cf5f1d320a0a5d249a6b6ae3f2b105
Author: Eelco Dolstra <edolstra@gmail.com>
Date:   Thu Nov 7 15:04:06 2019 +0100

    rustc: 1.38.0 -> 1.39.0

[jonringer]

very likely, also broke rustbindgen

[taku0]

Made PR #73039 for rustc.

[oscarvarto]

Firefox keeps failing to build even after #73039

[taku0]

firefox package is not updated yet. Made PR #73050.

[worldofpeace]

@edolstra Shouldn't we be updating rustc on staging and not master?

[taku0]

#73050 is merged. @jonringer could you check build and close if succeeds?

[jonringer]

launches fine, thank you all ;)