Building with "unsafe" and "std" features fails with alloc-stdlib 0.2.2

[plugwash]

If I try and build with both the "std" and "unsafe" features enabled and alloc-stdlib 0.2.2 the build fails with

error[E0061]: this function takes 1 argument but 0 arguments were supplied
   --> src/reader.rs:150:33
    |
150 |     let mut alloc_u8 = unsafe { HeapAllocUninitialized::<u8>::new() };
    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^-- an argument of type `u8` is missing
    |

and a bunch more similar errors.

If I force alloc-stdlib to version 0.2.1 the build succeeds, so it seems like alloc-stdlib broke API.