Bump bootstrap to 1.98 beta

[Mark-Simulacrum]

https://forge.rust-lang.org/release/process.html#default-branch-bootstrap-update-and-crater-tuesday

[rustbot]

miri is developed in its own repository. If possible, consider making this change to rust-lang/miri instead.

cc @rust-lang/miri

stdarch is developed in its own repository. If possible, consider making this change to rust-lang/stdarch instead.

cc @Amanieu, @folkertdev, @sayantn

Some changes occurred in integer formatting

cc @tgross35

[rustbot]

r? @JohnTitor

rustbot has assigned @JohnTitor.
They will have a look at your PR within the next two weeks and either review your PR or reassign to another reviewer.

Use r? to explicitly pick a reviewer

Why was this reviewer chosen?

The reviewer was selected based on:

• Owners of files modified in this PR: libs
• libs expanded to 12 candidates
• Random selection from Darksonn, JohnTitor, clarfonthey, jhpratt

[jieyouxu]

Thanks
r? me @bors r+ rollup=never

View changes since this review

[rust-bors]

📌 Commit 8e98714 has been approved by jieyouxu

It is now in the queue for this repository.

[JonathanBrouwer]

@bors p=6

[rust-bors]

💔 Test for 2d0b8c5 failed: CI. Failed job:

• auto - dist-i686-msvc (web logs, enhanced plaintext logs)

[JonathanBrouwer]

exit code: 0xc0000017, STATUS_NO_MEMORY

Does this reproduce?
@bors try jobs=dist-i686-msvc

[rust-bors]

💔 Test for 37c8ee2 failed: CI. Failed job:

• try - dist-i686-msvc (web logs, enhanced plaintext logs)

[rustbot]

Warning

If you are changing how CI LLVM is built or linked, make sure to bump
src/bootstrap/download-ci-llvm-stamp.

cc @jieyouxu

[Mark-Simulacrum]

@bors try jobs=dist-i686-msvc

[rust-bors]

💔 Test for 08446ec failed: CI. Failed job:

• try - dist-i686-msvc (web logs, enhanced plaintext logs)

[rust-log-analyzer]

The job dist-i686-msvc failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

LowFree:        12196008 kB
SwapTotal:       3014656 kB
SwapFree:        2860456 kB
##[endgroup]
Executing python x.py -j2 dist bootstrap --include-default-paths
+ python x.py -j2 dist bootstrap --include-default-paths
##[group]Building bootstrap
    Finished `dev` profile [unoptimized] target(s) in 1.76s
##[endgroup]
downloading https://static.rust-lang.org/dist/2026-07-06/rustfmt-nightly-i686-pc-windows-msvc.tar.xz
extracting D:\a\rust\rust\build\cache\2026-07-06\rustfmt-nightly-i686-pc-windows-msvc.tar.xz to D:\a\rust\rust\build\i686-pc-windows-msvc\rustfmt
---
   Compiling quote v1.0.45
error: could not compile `quote` (build script)

Caused by:
  process didn't exit successfully: `sccache 'D:\a\rust\rust\build\bootstrap\debug\rustc' --crate-name build_script_build --edition=2021 'C:\Users\runneradmin\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\quote-1.0.45\build.rs' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debug-assertions=off --cfg 'feature="default"' --cfg 'feature="proc-macro"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("default", "proc-macro"))' -C metadata=b72bb3a3a834151a --out-dir 'D:\a\rust\rust\build\i686-pc-windows-msvc\stage1-rustc\release\build\quote/03279c42beaf3f44\out' -L 'dependency=D:\a\rust\rust\build\i686-pc-windows-msvc\stage1-rustc\release\build\quote/03279c42beaf3f44\out' --cap-lints allow -Z binary-dep-depinfo` (exit code: 0xc0000017, STATUS_NO_MEMORY)
warning: build failed, waiting for other jobs to finish...
error: could not compile `proc-macro2` (build script)

Caused by:
  process didn't exit successfully: `sccache 'D:\a\rust\rust\build\bootstrap\debug\rustc' --crate-name build_script_build --edition=2021 'C:\Users\runneradmin\.cargo\registry\src\index.crates.io-1949cf8c6b5b557f\proc-macro2-1.0.106\build.rs' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C embed-bitcode=no -C debug-assertions=off --cfg 'feature="default"' --cfg 'feature="proc-macro"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("default", "nightly", "proc-macro", "span-locations"))' -C metadata=0e3c0cd282f1e688 --out-dir 'D:\a\rust\rust\build\i686-pc-windows-msvc\stage1-rustc\release\build\proc-macro2/b3c4050290632628\out' -L 'dependency=D:\a\rust\rust\build\i686-pc-windows-msvc\stage1-rustc\release\build\proc-macro2/b3c4050290632628\out' --cap-lints allow -Z binary-dep-depinfo` (exit code: 0xc0000017, STATUS_NO_MEMORY)
Bootstrap failed while executing `-j2 dist bootstrap --include-default-paths`
Build completed unsuccessfully in 0:18:38
  local time: Fri Jul 10 02:51:27 CUT 2026
  network time: Fri, 10 Jul 2026 02:51:27 GMT
##[error]Process completed with exit code 1.
##[group]Run echo "disk usage:"