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<code>./x test library/std</code> fails with library profile

A-contributor-roadblockArea: Makes things more difficult for new or seasoned contributors to RustArea: Makes things more difficult for new or seasoned contributors to Rust

A-download-rustcArea: The `rust.download-rustc` build option.Area: The `rust.download-rustc` build option.

C-bugCategory: This is a bug.Category: This is a bug.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Status: Open.

#142505 In rust-lang/rust;

· clarfonthey opened on Jun 14, 2025

bootstrap: download-rustc should not download rustc_dev unless it is needed

A-download-rustcArea: The `rust.download-rustc` build option.Area: The `rust.download-rustc` build option.

C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Status: Open.

#142468 In rust-lang/rust;

· RalfJung opened on Jun 13, 2025

download-rustc appears broken under CI conditions

A-CIArea: Our Github Actions CIArea: Our Github Actions CI

A-download-rustcArea: The `rust.download-rustc` build option.Area: The `rust.download-rustc` build option.

C-bugCategory: This is a bug.Category: This is a bug.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.Relevant to the infrastructure team, which will review and decide on the PR/issue.

Status: Open.

#142244 In rust-lang/rust;

· jieyouxu opened on Jun 9, 2025

download-rustc downloads rustc-dev even when it is not needed

A-download-rustcArea: The `rust.download-rustc` build option.Area: The `rust.download-rustc` build option.

C-discussionCategory: Discussion or questions that doesn't represent real issues.Category: Discussion or questions that doesn't represent real issues.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Status: Open.

#142013 In rust-lang/rust;

· RalfJung opened on Jun 4, 2025

bootstrap: Build using <code>download-rustc</code> can modify <code>Cargo.lock</code> for non <code>compiler/</code> deps, causing rustc to not be downloaded on next build

A-download-rustcArea: The `rust.download-rustc` build option.Area: The `rust.download-rustc` build option.

C-bugCategory: This is a bug.Category: This is a bug.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Status: Open.

#141986 In rust-lang/rust;

· aDotInTheVoid opened on Jun 3, 2025

bootstrap: force download-rustc=if-unchanged even if settings differ

A-download-rustcArea: The `rust.download-rustc` build option.Area: The `rust.download-rustc` build option.

C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.

E-needs-designThis issue needs exploration and design to see how and if we can fix/implement itThis issue needs exploration and design to see how and if we can fix/implement it

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Status: Open.

#141953 In rust-lang/rust;

· RalfJung opened on Jun 3, 2025

Investigate why repr-128-dwarf doesn't fail in CI test jobs

A-compiletestArea: The compiletest test runnerArea: The compiletest test runner

A-debuginfoArea: Debugging information in compiled programs (DWARF, PDB, etc.)Area: Debugging information in compiled programs (DWARF, PDB, etc.)

A-download-rustcArea: The `rust.download-rustc` build option.Area: The `rust.download-rustc` build option.

A-LLVMArea: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.Area: Code generation parts specific to LLVM. Both correctness bugs and optimization-related issues.

A-test-infraArea: test infrastructure (may span bootstrap/compiletest/more)Area: test infrastructure (may span bootstrap/compiletest/more)

C-bugCategory: This is a bug.Category: This is a bug.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

T-infraRelevant to the infrastructure team, which will review and decide on the PR/issue.Relevant to the infrastructure team, which will review and decide on the PR/issue.

Status: Open.

#138334 In rust-lang/rust;

· jieyouxu opened on Mar 11, 2025

<code>download-rustc</code> should support a cross-compiled <code>host</code>

A-crossArea: Cross compilationArea: Cross compilation

A-download-rustcArea: The `rust.download-rustc` build option.Area: The `rust.download-rustc` build option.

C-enhancementCategory: An issue proposing an enhancement or a PR with one.Category: An issue proposing an enhancement or a PR with one.

E-hardCall for participation: Hard difficulty. Experience needed to fix: A lot.Call for participation: Hard difficulty. Experience needed to fix: A lot.

T-bootstrapRelevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)

Status: Open.

#110411 In rust-lang/rust;

· jyn514 opened on Apr 16, 2023