Auto merge of rust-lang#149059 - GuillaumeGomez:rollup-s6m2mmy, r=GuillaumeGomez

Rollup of 4 pull requests

Successful merges:

 - rust-lang#148970 (std: sys: fs: uefi: Implement stat)
 - rust-lang#149020 (flush_delayed: add note about stashed diagnostics)
 - rust-lang#149026 (Add test for href of reexported enum variant)
 - rust-lang#149049 (compiletest: Use JSON "binary-format" to decide `//@ only-elf` and `//@ ignore-elf`)

r? `@ghost`
`@rustbot` modify labels: rollup

Author: bors