The compiler swallows opDispatch errors

[Nicholas Wilson]

On Friday, 27 August 2021 at 16:08:37 UTC, Steven Schveighoffer 
wrote:
> This bit me again:
> What? I have to tell the compiler to *explicitly instantiate 
> opDispatch* in order for it to tell me the actual message?

https://github.com/dlang/dmd/pull/12288#issuecomment-802852873

because I couldn't figure out how to do it properly.