[INFO] cloning repository https://github.com/FredericaBernkastel/gallery-of-babel
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FredericaBernkastel/gallery-of-babel" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredericaBernkastel%2Fgallery-of-babel", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredericaBernkastel%2Fgallery-of-babel'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ca478cb8ecf5a033c2c3d2b7bdba1bece39b2f8e
[INFO] documenting FredericaBernkastel/gallery-of-babel against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredericaBernkastel%2Fgallery-of-babel" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FredericaBernkastel/gallery-of-babel 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 git repo https://github.com/FredericaBernkastel/gallery-of-babel
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/FredericaBernkastel/gallery-of-babel
[INFO] tweaked toml for git repo https://github.com/FredericaBernkastel/gallery-of-babel 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]     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] 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] 970af0fbcb3a524c212c90bd89c13a78168a9d8fb78da38980c8cb60261f6d1f
[INFO] running `Command { std: "docker" "start" "-a" "970af0fbcb3a524c212c90bd89c13a78168a9d8fb78da38980c8cb60261f6d1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "970af0fbcb3a524c212c90bd89c13a78168a9d8fb78da38980c8cb60261f6d1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "970af0fbcb3a524c212c90bd89c13a78168a9d8fb78da38980c8cb60261f6d1f", kill_on_drop: false }`
[INFO] [stdout] 970af0fbcb3a524c212c90bd89c13a78168a9d8fb78da38980c8cb60261f6d1f
[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] e1f2eba3224734ddef63ffdfa4e7d2a508fa590525b445b1d1e473794cdd3f18
[INFO] running `Command { std: "docker" "start" "-a" "e1f2eba3224734ddef63ffdfa4e7d2a508fa590525b445b1d1e473794cdd3f18", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.18
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking humansize v1.1.1
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking euclid v0.22.9
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.17
[INFO] [stderr]     Checking crossbeam-deque v0.8.4
[INFO] [stderr]     Checking rayon v1.8.0
[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 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/1.75.0-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=ed9e987dcb5e377b -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-fd85f3ee78419db7.rmeta --extern euclid=/opt/rustwide/target/debug/deps/libeuclid-d33a5f159a14191a.rmeta --extern humansize=/opt/rustwide/target/debug/deps/libhumansize-65254caf85668881.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-dbd7922ddc771bc2.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-8c2cab534c36cbcf.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-b6a868347a114a06.rmeta --extern rand_pcg=/opt/rustwide/target/debug/deps/librand_pcg-670bd37f16e1b00c.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-2b287af2ade4ac5a.rmeta --cap-lints=warn --crate-version 0.4.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e1f2eba3224734ddef63ffdfa4e7d2a508fa590525b445b1d1e473794cdd3f18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1f2eba3224734ddef63ffdfa4e7d2a508fa590525b445b1d1e473794cdd3f18", kill_on_drop: false }`
[INFO] [stdout] e1f2eba3224734ddef63ffdfa4e7d2a508fa590525b445b1d1e473794cdd3f18
[INFO] documenting FredericaBernkastel/gallery-of-babel against beta-2023-12-22 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFredericaBernkastel%2Fgallery-of-babel" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FredericaBernkastel/gallery-of-babel on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FredericaBernkastel/gallery-of-babel
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/FredericaBernkastel/gallery-of-babel
[INFO] tweaked toml for git repo https://github.com/FredericaBernkastel/gallery-of-babel written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 383a24d39be16f79b75e2b26a7f8395e300a1f5338190a917910a26924ba711b
[INFO] running `Command { std: "docker" "start" "-a" "383a24d39be16f79b75e2b26a7f8395e300a1f5338190a917910a26924ba711b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "383a24d39be16f79b75e2b26a7f8395e300a1f5338190a917910a26924ba711b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "383a24d39be16f79b75e2b26a7f8395e300a1f5338190a917910a26924ba711b", kill_on_drop: false }`
[INFO] [stdout] 383a24d39be16f79b75e2b26a7f8395e300a1f5338190a917910a26924ba711b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "+beta-2023-12-22" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25360839d4532d1d7c920edf37b98a89918bf197351956806bc55d47d90b531f
[INFO] running `Command { std: "docker" "start" "-a" "25360839d4532d1d7c920edf37b98a89918bf197351956806bc55d47d90b531f", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.18
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking humansize v1.1.1
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking euclid v0.22.9
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rand_pcg v0.3.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.17
[INFO] [stderr]     Checking crossbeam-deque v0.8.4
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]  Documenting space-filling v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta 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/beta-2023-12-22-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=136f149e54a58a17 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-a3466ae9a2f9d580.rmeta --extern euclid=/opt/rustwide/target/debug/deps/libeuclid-568a55d05bddb901.rmeta --extern humansize=/opt/rustwide/target/debug/deps/libhumansize-0fdf7d54719cee8a.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-caa732e6743421e5.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-4e7ac28810aa7d15.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-9a549052291e4153.rmeta --extern rand_pcg=/opt/rustwide/target/debug/deps/librand_pcg-30dd76b41f119582.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-bc9a80acbc2a9081.rmeta --cap-lints=warn --crate-version 0.4.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "25360839d4532d1d7c920edf37b98a89918bf197351956806bc55d47d90b531f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25360839d4532d1d7c920edf37b98a89918bf197351956806bc55d47d90b531f", kill_on_drop: false }`
[INFO] [stdout] 25360839d4532d1d7c920edf37b98a89918bf197351956806bc55d47d90b531f
