Rollup merge of #32641 - tbu-:pr_e0277, r=pnkfelix
Rollup merge of #32641 - tbu-:pr_e0277, r=pnkfelix

Improve E0277 error message in a generic context

This now mentions that you can restrict type parameters to be able to
call functions of traits.

graydon/rust,aidancully/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,GBGamer/rust,aidancully/rust,GBGamer/rust,graydon/rust,graydon/rust,GBGamer/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,GBGamer/rust,aidancully/rust,GBGamer/rust,GBGamer/rust,graydon/rust