[INFO] fetching crate hypermangle-core 0.6.3...
[INFO] documenting hypermangle-core-0.6.3 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate hypermangle-core 0.6.3 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate hypermangle-core 0.6.3 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hypermangle-core 0.6.3
[INFO] finished tweaking crates.io crate hypermangle-core 0.6.3
[INFO] tweaked toml for crates.io crate hypermangle-core 0.6.3 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded axum-macros v0.3.8
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[INFO] [stderr]   Downloaded console-api v0.5.0
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[INFO] [stderr]   Downloaded tokio v1.30.0
[INFO] [stderr]   Downloaded clap_builder v4.3.24
[INFO] [stderr]   Downloaded pyo3-asyncio v0.19.0
[INFO] [stderr]   Downloaded console-subscriber v0.1.10
[INFO] [stderr]   Downloaded hypermangle-py v0.2.0
[INFO] [stderr]   Downloaded lers v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52e911c4b201f0856f5603a4ab773facb7c114a252538cfb823d10cfcb679913
[INFO] running `Command { std: "docker" "start" "-a" "52e911c4b201f0856f5603a4ab773facb7c114a252538cfb823d10cfcb679913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52e911c4b201f0856f5603a4ab773facb7c114a252538cfb823d10cfcb679913", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52e911c4b201f0856f5603a4ab773facb7c114a252538cfb823d10cfcb679913", kill_on_drop: false }`
[INFO] [stdout] 52e911c4b201f0856f5603a4ab773facb7c114a252538cfb823d10cfcb679913
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7f0d101f17bce5f85f206ec7b2cd874435c4916bff5e96bbc9b701df6eb2748
[INFO] running `Command { std: "docker" "start" "-a" "d7f0d101f17bce5f85f206ec7b2cd874435c4916bff5e96bbc9b701df6eb2748", kill_on_drop: false }`
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[INFO] [stderr]     Checking toml_datetime v0.6.5
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[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/hypermangle-py-0.2.0/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(exclusive_wrapper)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hypermangle-py` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d7f0d101f17bce5f85f206ec7b2cd874435c4916bff5e96bbc9b701df6eb2748", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7f0d101f17bce5f85f206ec7b2cd874435c4916bff5e96bbc9b701df6eb2748", kill_on_drop: false }`
[INFO] [stdout] d7f0d101f17bce5f85f206ec7b2cd874435c4916bff5e96bbc9b701df6eb2748
