Auto merge of #144731 - samueltardieu:rollup-36y30k2, r=samueltardieu

Rollup of 4 pull requests

Successful merges:

 - rust-lang/rust#136840 (Fix linker-plugin-lto only doing thin lto)
 - rust-lang/rust#144053 (Remove install Rust script from CI)
 - rust-lang/rust#144297 (Make `libtest::ERROR_EXIT_CODE` const public to not redefine it in rustdoc)
 - rust-lang/rust#144721 (`std_detect`: Linux 6.16 support for RISC-V)

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

Author: bors