[INFO] fetching crate space-filling 0.4.0...
[INFO] documenting space-filling-0.4.0 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate space-filling 0.4.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate space-filling 0.4.0 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 space-filling 0.4.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate space-filling 0.4.0
[INFO] tweaked toml for crates.io crate space-filling 0.4.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate space-filling 0.4.0 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded lexical-sort v0.3.1
[INFO] [stderr]   Downloaded open v1.7.1
[INFO] [stderr]   Downloaded any_ascii v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 6cc4d276b2346a006f1cfd2eadc1e171acad55a6c19aa21032db11d7bbd7cec7
[INFO] running `Command { std: "docker" "start" "-a" "6cc4d276b2346a006f1cfd2eadc1e171acad55a6c19aa21032db11d7bbd7cec7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cc4d276b2346a006f1cfd2eadc1e171acad55a6c19aa21032db11d7bbd7cec7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cc4d276b2346a006f1cfd2eadc1e171acad55a6c19aa21032db11d7bbd7cec7", kill_on_drop: false }`
[INFO] [stdout] 6cc4d276b2346a006f1cfd2eadc1e171acad55a6c19aa21032db11d7bbd7cec7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3fcc3225794fb9ffb4b1d557cb97b2804837794c57e1d8f9667ef9e1345e1eca
[INFO] running `Command { std: "docker" "start" "-a" "3fcc3225794fb9ffb4b1d557cb97b2804837794c57e1d8f9667ef9e1345e1eca", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling anyhow v1.0.71
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking humansize v1.1.1
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking num_cpus v1.15.0
[INFO] [stderr]     Checking euclid v0.22.9
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]  Documenting space-filling v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:165:18
[INFO] [stdout]     |
[INFO] [stdout] 165 | #![cfg_attr(doc, feature(doc_cfg))]
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 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 document `space-filling`
[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 space_filling src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b2cae7582bb1bb81 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-8f726a71570e27c2.rmeta --extern euclid=/opt/rustwide/target/debug/deps/libeuclid-f2525f3363a65055.rmeta --extern humansize=/opt/rustwide/target/debug/deps/libhumansize-28edbe9027052c40.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-79c427e0fff9c765.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-9c9b48217335b94b.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-3cd1571608ca8317.rmeta --extern rand_pcg=/opt/rustwide/target/debug/deps/librand_pcg-4c89cff903ff39a0.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-905c825737904fe3.rmeta --cap-lints=warn --crate-version 0.4.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3fcc3225794fb9ffb4b1d557cb97b2804837794c57e1d8f9667ef9e1345e1eca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fcc3225794fb9ffb4b1d557cb97b2804837794c57e1d8f9667ef9e1345e1eca", kill_on_drop: false }`
[INFO] [stdout] 3fcc3225794fb9ffb4b1d557cb97b2804837794c57e1d8f9667ef9e1345e1eca
