Rollup merge of #71166 - GuillaumeGomez:cleanup-e0518, r=Dylan-DPC
Rollup merge of #71166 - GuillaumeGomez:cleanup-e0518, r=Dylan-DPC

Clean up E0518 explanation

r? @Dylan-DPC

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