Build failures using dockcross

[bsvh]

I've been trying to build plato using the dockcross image you provided however it fails with the following error

error[E0635]: unknown feature `integer_atomics`
  --> /home/bsvh/.cargo/registry/src/github.com-1ecc6299db9ec823/atomic-0.4.0/src/lib.rs:36:67
   |
36 |     feature = "nightly", feature(const_fn, cfg_target_has_atomic, integer_atomics, atomic_min_max)
   | 

I know zero rust, so I have no idea how to fix this. If possible, could you add a new release to the releases page with the updated changes?

[darvin]

project abandoned please take over if interested