could not find `compile_error` in `$crate`

[JeanMertz]

When compiling an invalid html! implementation, the compiler wants to show a detailed error message, but is unable to do so:

error[E0433]: failed to resolve: could not find `compile_error` in `$crate`
  --> myapp/src/lib.rs:26:9
   |
26 | /         html! {
27 | |             <div>Woohoo</div>
28 | |             <table></table>
29 | |         }
   | |_________^ could not find `compile_error` in `$crate`

This seems to be similar to rust-bakery/nom#862, which was fixed in rust-bakery/nom@34df620.

[jstarry]

This shouldn't be an issue after #500 is merged

[jstarry]

@JeanMertz this should be fixed in 0.7