Bad compiler error messages while using diesel

[weiznich]

Following this request on twitter I've put together a "best of" of some compiler errors that can occur if something went wrong while using diesel. The test cases are mostly taken out of our issue tracker, containing things our users have encountered in the past. So cc @estebank

See this repository for the code examples with some explanation what's going wrong there and what would be more helpful in my opinion. Feel free to contact me for any diesel related question about those error messages.

[weiznich]

Likely also related #81374

[Aaron1011]

I've opened #83794 to track fixing the underlying cause of bad_insertable.rs.

[weiznich]

#51992 Would probably help much with the bad_insertable case. (I believe this error message was the motivate to write the corresponding RFC back then)

[estebank]

CC #28894