batch-impl 0.8.2

A proc-macro library for batch generating trait impls with a powerful DSL
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error: batch-impl: `impl{...}` template cannot destructure the target type (template `fn(A) -> B` does not match target `fn(u8) -> u16`)
 --> tests/ui/impl_shape_fn_bound.rs:5:1
  |
5 | #[batch_impl(fn(u8) -> u16 impl{fn(A) -> B} { fn call(&self, x: u8) -> u16 { self(x) } })]
  | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |
  = note: this error originates in the attribute macro `batch_impl` (in Nightly builds, run with -Z macro-backtrace for more info)