Rollup merge of #82040 - GuillaumeGomez:ensure-src-link, r=CraftSpider
Rollup merge of #82040 - GuillaumeGomez:ensure-src-link, r=CraftSpider

Add test to prevent src link regression

Fixes #80502.

This PR is simply about adding a test to prevent a regression.

cc `@bugadani` `@CraftSpider`
r? `@camelid`

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