building stdgba with latest nightly

gistfile1.txt

cargo build                                                                                       ✘ 130
   Compiling g v0.1.0 (file:///Users/mendler/Code/snippets/rust/g)
   Compiling gbaimg v0.1.0 (file:///Users/mendler/Code/snippets/rust/g/gbaimg)
warning: unused import: `Term`
 --> gbaimg/src/lib.rs:8:43
  |
8 | use proc_macro::{ TokenStream, TokenTree, Term };
  |                                           ^^^^
  |
  = note: #[warn(unused_imports)] on by default

warning: unused import: `std::fs::File`
  --> gbaimg/src/lib.rs:17:5
   |
17 | use std::fs::File;
   |     ^^^^^^^^^^^^^

warning: unused import: `std::collections::HashMap`
  --> gbaimg/src/lib.rs:19:5
   |
19 | use std::collections::HashMap;
   |     ^^^^^^^^^^^^^^^^^^^^^^^^^

warning: unnecessary parentheses around `for` head expression
  --> gbaimg/src/lib.rs:64:22
   |
64 |             for y in (0..8) {
   |                      ^^^^^^ help: remove these parentheses
   |
   = note: #[warn(unused_parens)] on by default

warning: unnecessary parentheses around `for` head expression
  --> gbaimg/src/lib.rs:66:26
   |
66 |                 for x in (0..8) {
   |                          ^^^^^^ help: remove these parentheses

warning: unnecessary parentheses around `for` head expression
   --> gbaimg/src/lib.rs:144:22
    |
144 |             for y in (0..8) {
    |                      ^^^^^^ help: remove these parentheses

warning: unnecessary parentheses around `for` head expression
   --> gbaimg/src/lib.rs:146:26
    |
146 |                 for x in (0..8) {
    |                          ^^^^^^ help: remove these parentheses

warning: unused import: `image`
  --> gbaimg/src/lib.rs:11:5
   |
11 | use image::*;
   |     ^^^^^

error[E0512]: transmute called with types of different sizes
   --> gbaimg/src/lib.rs:192:34
    |
192 |             let trans = unsafe { transmute::<proc_macro::Literal, token::Token>(x.clone()) };
    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: source type: proc_macro::Literal (160 bits)
    = note: target type: syntax::parse::token::Token (192 bits)

error: aborting due to previous error

For more information about this error, try `rustc --explain E0512`.
error: Could not compile `gbaimg`.
warning: build failed, waiting for other jobs to finish...