"found possibly newer version of crate std which cc depends on" while building rustc
#49979
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C-bug
Category: This is a bug.
T-bootstrap
Relevant to the bootstrap subteam: Rust's build system (x.py and src/bootstrap)
T-compiler
Relevant to the compiler team, which will review and decide on the PR/issue.
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SimonSapin
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A-build
T-bootstrap
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I think I know what the problem here is but it won't be a trivial fix -- we'll need to split |
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Stuff like this is especially annoying during bisecting, you can't just checkout a commit and test. |
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I can confirm this error still happens. Restarting the build didn't help I had to first delete the generated libraries. @Mark-Simulacrum did the refactor of rustbuild already land? |
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It's in progress; there's a PR open which I think might help with this or at least help make a future PR simpler (#52036). |
XAMPPRocky
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jonas-schievink
added
T-bootstrap
Mark-Simulacrum
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Aug 14, 2019
…xcrichton Utilize -Zbinary-dep-depinfo in rustbuild The last commit moves us over to using binary-dep-depinfo while the first two permit us to bootstrap from what will become future beta, to be released in the next week (it's the `cfg(bootstrap)` processing). We no longer utilize stamp-file mtimes at all inside rustbuild, and a future PR may be able to entirely eliminate them by eagerly copying to the appropriate sysroot. The only mtime-based dependency tracking left is for documentation because we lie to Cargo about the rustdoc binary, so Cargo does not track changes to the real binary, and codegen-backends because binary-dep-depinfo does not emit that information into the depfiles. Both of these are fixable in the longer term but this existing patch gives us the following benefits: * We no longer delete Cargo target directories manually within a stage. Cross-stage, changes to codegen backends will still clear out target directories. This means that incremental state persists across individual steps (e.g., rebuilding libstd does not clear out librustc incremental state). Fixes rust-lang#54712. * Dependency tracking across steps within a given stage is now fully precise. We will not clear out all codegen backend dependencies due to changes in librustc_driver, for example, only deleting the final librustc_codegen_llvm crate. Fixes rust-lang#54008, fixes rust-lang#50481. * We properly track codegen backends as a dependency (equivalent to rustc) across changes. Fixes rust-lang#53284, and fixes rust-lang#52719. * Cross-stage dependency tracking of crates is also much more accurate and reliable. Most likely fixes rust-lang#49979 (but no reproduction steps in that issue). Fixes rust-lang#59105. cc rust-lang#63012
Centril
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Aug 15, 2019
…xcrichton Utilize -Zbinary-dep-depinfo in rustbuild The last commit moves us over to using binary-dep-depinfo while the first two permit us to bootstrap from what will become future beta, to be released in the next week (it's the `cfg(bootstrap)` processing). We no longer utilize stamp-file mtimes at all inside rustbuild, and a future PR may be able to entirely eliminate them by eagerly copying to the appropriate sysroot. The only mtime-based dependency tracking left is for documentation because we lie to Cargo about the rustdoc binary, so Cargo does not track changes to the real binary, and codegen-backends because binary-dep-depinfo does not emit that information into the depfiles. Both of these are fixable in the longer term but this existing patch gives us the following benefits: * We no longer delete Cargo target directories manually within a stage. Cross-stage, changes to codegen backends will still clear out target directories. This means that incremental state persists across individual steps (e.g., rebuilding libstd does not clear out librustc incremental state). Fixes rust-lang#54712. * Dependency tracking across steps within a given stage is now fully precise. We will not clear out all codegen backend dependencies due to changes in librustc_driver, for example, only deleting the final librustc_codegen_llvm crate. Fixes rust-lang#54008, fixes rust-lang#50481. * We properly track codegen backends as a dependency (equivalent to rustc) across changes. Fixes rust-lang#53284, and fixes rust-lang#52719. * Cross-stage dependency tracking of crates is also much more accurate and reliable. Most likely fixes rust-lang#49979 (but no reproduction steps in that issue). Fixes rust-lang#59105. cc rust-lang#63012
Centril
added a commit
to Centril/rust
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this issue
Aug 15, 2019
…xcrichton Utilize -Zbinary-dep-depinfo in rustbuild The last commit moves us over to using binary-dep-depinfo while the first two permit us to bootstrap from what will become future beta, to be released in the next week (it's the `cfg(bootstrap)` processing). We no longer utilize stamp-file mtimes at all inside rustbuild, and a future PR may be able to entirely eliminate them by eagerly copying to the appropriate sysroot. The only mtime-based dependency tracking left is for documentation because we lie to Cargo about the rustdoc binary, so Cargo does not track changes to the real binary, and codegen-backends because binary-dep-depinfo does not emit that information into the depfiles. Both of these are fixable in the longer term but this existing patch gives us the following benefits: * We no longer delete Cargo target directories manually within a stage. Cross-stage, changes to codegen backends will still clear out target directories. This means that incremental state persists across individual steps (e.g., rebuilding libstd does not clear out librustc incremental state). Fixes rust-lang#54712. * Dependency tracking across steps within a given stage is now fully precise. We will not clear out all codegen backend dependencies due to changes in librustc_driver, for example, only deleting the final librustc_codegen_llvm crate. Fixes rust-lang#54008, fixes rust-lang#50481. * We properly track codegen backends as a dependency (equivalent to rustc) across changes. Fixes rust-lang#53284, and fixes rust-lang#52719. * Cross-stage dependency tracking of crates is also much more accurate and reliable. Most likely fixes rust-lang#49979 (but no reproduction steps in that issue). Fixes rust-lang#59105. cc rust-lang#63012
Centril
added a commit
to Centril/rust
that referenced
this issue
Aug 15, 2019
…xcrichton Utilize -Zbinary-dep-depinfo in rustbuild The last commit moves us over to using binary-dep-depinfo while the first two permit us to bootstrap from what will become future beta, to be released in the next week (it's the `cfg(bootstrap)` processing). We no longer utilize stamp-file mtimes at all inside rustbuild, and a future PR may be able to entirely eliminate them by eagerly copying to the appropriate sysroot. The only mtime-based dependency tracking left is for documentation because we lie to Cargo about the rustdoc binary, so Cargo does not track changes to the real binary, and codegen-backends because binary-dep-depinfo does not emit that information into the depfiles. Both of these are fixable in the longer term but this existing patch gives us the following benefits: * We no longer delete Cargo target directories manually within a stage. Cross-stage, changes to codegen backends will still clear out target directories. This means that incremental state persists across individual steps (e.g., rebuilding libstd does not clear out librustc incremental state). Fixes rust-lang#54712. * Dependency tracking across steps within a given stage is now fully precise. We will not clear out all codegen backend dependencies due to changes in librustc_driver, for example, only deleting the final librustc_codegen_llvm crate. Fixes rust-lang#54008, fixes rust-lang#50481. * We properly track codegen backends as a dependency (equivalent to rustc) across changes. Fixes rust-lang#53284, and fixes rust-lang#52719. * Cross-stage dependency tracking of crates is also much more accurate and reliable. Most likely fixes rust-lang#49979 (but no reproduction steps in that issue). Fixes rust-lang#59105. cc rust-lang#63012
Centril
added a commit
to Centril/rust
that referenced
this issue
Aug 15, 2019
…xcrichton Utilize -Zbinary-dep-depinfo in rustbuild The last commit moves us over to using binary-dep-depinfo while the first two permit us to bootstrap from what will become future beta, to be released in the next week (it's the `cfg(bootstrap)` processing). We no longer utilize stamp-file mtimes at all inside rustbuild, and a future PR may be able to entirely eliminate them by eagerly copying to the appropriate sysroot. The only mtime-based dependency tracking left is for documentation because we lie to Cargo about the rustdoc binary, so Cargo does not track changes to the real binary, and codegen-backends because binary-dep-depinfo does not emit that information into the depfiles. Both of these are fixable in the longer term but this existing patch gives us the following benefits: * We no longer delete Cargo target directories manually within a stage. Cross-stage, changes to codegen backends will still clear out target directories. This means that incremental state persists across individual steps (e.g., rebuilding libstd does not clear out librustc incremental state). Fixes rust-lang#54712. * Dependency tracking across steps within a given stage is now fully precise. We will not clear out all codegen backend dependencies due to changes in librustc_driver, for example, only deleting the final librustc_codegen_llvm crate. Fixes rust-lang#54008, fixes rust-lang#50481. * We properly track codegen backends as a dependency (equivalent to rustc) across changes. Fixes rust-lang#53284, and fixes rust-lang#52719. * Cross-stage dependency tracking of crates is also much more accurate and reliable. Most likely fixes rust-lang#49979 (but no reproduction steps in that issue). Fixes rust-lang#59105. cc rust-lang#63012
Centril
added a commit
to Centril/rust
that referenced
this issue
Aug 15, 2019
…xcrichton Utilize -Zbinary-dep-depinfo in rustbuild The last commit moves us over to using binary-dep-depinfo while the first two permit us to bootstrap from what will become future beta, to be released in the next week (it's the `cfg(bootstrap)` processing). We no longer utilize stamp-file mtimes at all inside rustbuild, and a future PR may be able to entirely eliminate them by eagerly copying to the appropriate sysroot. The only mtime-based dependency tracking left is for documentation because we lie to Cargo about the rustdoc binary, so Cargo does not track changes to the real binary, and codegen-backends because binary-dep-depinfo does not emit that information into the depfiles. Both of these are fixable in the longer term but this existing patch gives us the following benefits: * We no longer delete Cargo target directories manually within a stage. Cross-stage, changes to codegen backends will still clear out target directories. This means that incremental state persists across individual steps (e.g., rebuilding libstd does not clear out librustc incremental state). Fixes rust-lang#54712. * Dependency tracking across steps within a given stage is now fully precise. We will not clear out all codegen backend dependencies due to changes in librustc_driver, for example, only deleting the final librustc_codegen_llvm crate. Fixes rust-lang#54008, fixes rust-lang#50481. * We properly track codegen backends as a dependency (equivalent to rustc) across changes. Fixes rust-lang#53284, and fixes rust-lang#52719. * Cross-stage dependency tracking of crates is also much more accurate and reliable. Most likely fixes rust-lang#49979 (but no reproduction steps in that issue). Fixes rust-lang#59105. cc rust-lang#63012
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i am new to rust, i am brought here by search engine with the same error message. i "fixed" the error with cargo clean.
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While working on std lately, I semi-regularly end up with an error like below. Unfortunately I don’t know the exact conditions to reproduce this. It possibly involves re-using a build directory after starting a new branch from a new position of git
upstream/master.This looks similar to #44739, which was fixed in #44792. Maybe something there regressed? CC @Mark-Simulacrum
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