ideas for rust bug minimization sequel

[pnkfelix]

I do plan to eventually finish my epic saga of minimizing rust-lang/rust#65774

Or maybe I'll document the process of minimizing a different bug

[pnkfelix]

in any case, while discussing the matter with centril they pointed out their own list of transformations they perform while minimizing bugs. I noted that while I often do similar things, I didn't document any of them in my first blog post on the subject.

Here was Centril's list:

Ah cool; before I read the post, here are some things I would do myself:

• Remove elided lifetimes for explicit quantification
• Desugar bounds to where clauses
• Create dummy functions and/or use panic!() liberally as a substitute while shrinking
• Generally prefer desugared constructs (match over if, type Alias = impl Trait; over -> impl Trait, the actual type over Self)
• Prefer record structs and variants over tuple structs (simplifies the MIR)
• When you've minimized a bit and it's reasonably short, look at the MIR to see if you can shrink some more
• Use cargo expand to get rid of macros