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error_index_generator in 1.24.0 fails to build using 1.24.0, entity not found #48308
Description
I can build rust 1.24.0 using our 1.23.0 package, but when I try to build 1.24.0 again using the 1.24.0 package I already built I get the following error during python2 ./x.py install:
Documenting error index (x86_64-unknown-linux-gnu)
Building stage2 tool error_index_generator (x86_64-unknown-linux-gnu)
Compiling error_index_generator v0.0.0 (file:///build/rust/src/rustc-1.24.0-src/src/tools/error_index_generator)
Finished release [optimized] target(s) in 4.3 secs
thread 'main' panicked at 'entity not found', tools/error_index_generator/main.rs:209:9
note: Run with `RUST_BACKTRACE=1` for a backtrace.
command did not execute successfully: "/build/rust/src/rustc-1.24.0-src/build/x86_64-unknown-linux-gnu/stage2-tools-bin/error_index_generator" "html" "/build/rust/src/rustc-1.24.0-src/build/x86_64-unknown-linux-gnu/doc/error-index.html"
expected success, got: exit code: 101
failed to run: /build/rust/src/rustc-1.24.0-src/build/bootstrap/debug/bootstrap install
Build completed unsuccessfully in 0:01:47
Activity
Mark-Simulacrum commentedon Feb 18, 2018
Looks like maybe we didn't generate the relevant metadata. Could you provide the full log by chance?
kyrias commentedon Feb 18, 2018
@Mark-Simulacrum https://ptpb.pw/bkT0
cuviper commentedon Feb 21, 2018
This was seen on Fedora too, in the build.log here:
https://koji.fedoraproject.org/koji/taskinfo?taskID=25212630
cuviper commentedon Feb 22, 2018
To get away from distro idiosyncrasies, I tried default builds of stable, beta, and nightly, just pointing each to their matching
--local-rust-root ~/.rustup/toolchains/{stable,beta,nightly}...for a local rebuild. Stable (1.24) still failed, but beta and nightly were fine.cuviper commentedon Feb 22, 2018
The actual error via strace is:
I strongly suspect we need 8c9bf66 from #47141.
cuviper commentedon Feb 22, 2018
I backported that commit to stable, without the unrelated stage0-diagnostic stuff, and it seems to work:
cuviper@b445a52
Mark-Simulacrum commentedon Feb 22, 2018
Thanks for experimenting! Since it's looking like we might be releasing 1.24.1 anyway (due to a variety of regressions that where detected post-release) I'll try to make sure that patch makes it into that.
nikomatsakis commentedon Feb 22, 2018
triage: P-high
Gotta get this fixed.
cuviper commentedon Mar 2, 2018
Fixed in 1.24.1.