[INFO] fetching crate ppl 0.1.4...
[INFO] documenting ppl-0.1.4 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate ppl 0.1.4 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate ppl 0.1.4 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ppl 0.1.4
[INFO] finished tweaking crates.io crate ppl 0.1.4
[INFO] tweaked toml for crates.io crate ppl 0.1.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate ppl 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded core_affinity v0.8.1
[INFO] [stderr]   Downloaded env_logger v0.10.1
[INFO] [stderr]   Downloaded rustix v0.38.15
[INFO] [stderr]   Downloaded ff_buffer v0.1.0
[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" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7d3d9729d83c5b8cbcee65df81198152a9e77ac351a8e9ac9ee8dd101bda106
[INFO] running `Command { std: "docker" "start" "-a" "f7d3d9729d83c5b8cbcee65df81198152a9e77ac351a8e9ac9ee8dd101bda106", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7d3d9729d83c5b8cbcee65df81198152a9e77ac351a8e9ac9ee8dd101bda106", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7d3d9729d83c5b8cbcee65df81198152a9e77ac351a8e9ac9ee8dd101bda106", kill_on_drop: false }`
[INFO] [stdout] f7d3d9729d83c5b8cbcee65df81198152a9e77ac351a8e9ac9ee8dd101bda106
[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" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e3ccfd78f3abeeb077ea95c01392b95e3036c3fea79c66eef13bc054a2cba860
[INFO] running `Command { std: "docker" "start" "-a" "e3ccfd78f3abeeb077ea95c01392b95e3036c3fea79c66eef13bc054a2cba860", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling libc v0.2.148
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]     Checking dyn-clone v1.0.16
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking core_affinity v0.8.1
[INFO] [stderr]  Documenting ppl v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(unsized_fn_params)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(box_into_inner)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `ppl`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name ppl src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="crossbeam"' --cfg 'feature="crossbeam-channel"' --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=39a62c4b9548e717 -L dependency=/opt/rustwide/target/debug/deps --extern core_affinity=/opt/rustwide/target/debug/deps/libcore_affinity-9d6c9e9792495800.rmeta --extern crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-e9911020c02abe87.rmeta --extern crossbeam_deque=/opt/rustwide/target/debug/deps/libcrossbeam_deque-513bea1af9b2d454.rmeta --extern dyn_clone=/opt/rustwide/target/debug/deps/libdyn_clone-c1353a6a39ca7b22.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-c2b9fe8f0bb60ac5.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-02aed8f6035fc7a6.rmeta --cap-lints=warn --crate-version 0.1.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e3ccfd78f3abeeb077ea95c01392b95e3036c3fea79c66eef13bc054a2cba860", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3ccfd78f3abeeb077ea95c01392b95e3036c3fea79c66eef13bc054a2cba860", kill_on_drop: false }`
[INFO] [stdout] e3ccfd78f3abeeb077ea95c01392b95e3036c3fea79c66eef13bc054a2cba860
