> I.e., is there an increased risk in using RUSTC_BOOTSTRAP in a non-nightly compiler (the proposed case for us downstream) in comparison to using the unstable options in a nightly compiler (what upstream does)?
Normally, it is not. Rust compilers, even in the stable channel, include the complete logic of a nightly compiler. The logic is disabled by default during the runtime when the compiler is in the stable channel. The reason why the variable is called "RUSTC_BOOTSTRAP" is that this functionality is usually required when building the next version of the Rust compiler. In this case, the Rust compiler needs to understand newer syntax unavailable in the previous version. I hope my explanation makes sense. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/2049493 Title: Newer rustc version needed in jammy to build chromium updates Status in chromium-browser package in Ubuntu: New Status in rustc package in Ubuntu: New Bug description: The next chromium version is making rustc mandatory to build. Chromium is a snap built from core22 so using the jammy packages, the build is currently failing because it needs libprofiler_builtins.rlib which isn't available. Upstream provides toolchain builds that can be used but only for amd64 so currently the snap is failing to build on arm https://launchpad.net/~chromium-team/+snap/chromium-snap-from-source-beta The version upstream is using is 1.75 but it's possible that a lower version would be enough for now if libprofiler was enabled To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/2049493/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

