[INFO] cloning repository https://github.com/R4chel/art
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/R4chel/art" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FR4chel%2Fart", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FR4chel%2Fart'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4a5b931a54a986bcd00bca9c20409cda5093a74
[INFO] documenting R4chel/art 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%2FR4chel%2Fart" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/R4chel/art 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/R4chel/art
[INFO] finished tweaking git repo https://github.com/R4chel/art
[INFO] tweaked toml for git repo https://github.com/R4chel/art written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/R4chel/art 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hsl v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] e73d865f5ee1ac81e0b4be4ba11e7c1b797bc0e3cfc7e869abb76a3b7f3e9b1f
[INFO] running `Command { std: "docker" "start" "-a" "e73d865f5ee1ac81e0b4be4ba11e7c1b797bc0e3cfc7e869abb76a3b7f3e9b1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e73d865f5ee1ac81e0b4be4ba11e7c1b797bc0e3cfc7e869abb76a3b7f3e9b1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e73d865f5ee1ac81e0b4be4ba11e7c1b797bc0e3cfc7e869abb76a3b7f3e9b1f", kill_on_drop: false }`
[INFO] [stdout] e73d865f5ee1ac81e0b4be4ba11e7c1b797bc0e3cfc7e869abb76a3b7f3e9b1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 47a05e666c6ad6496f7f57261232ae1b6ee845f8e9f811c02e4ae8a765712134
[INFO] running `Command { std: "docker" "start" "-a" "47a05e666c6ad6496f7f57261232ae1b6ee845f8e9f811c02e4ae8a765712134", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.82
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling bumpalo v3.10.0
[INFO] [stderr]    Compiling libc v0.2.127
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling wasm-bindgen v0.2.82
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking hsl v0.1.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.82
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.82
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.82
[INFO] [stderr]     Checking js-sys v0.3.59
[INFO] [stderr]     Checking web-sys v0.3.59
[INFO] [stderr]  Documenting art v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `art`
[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=2018 --crate-type cdylib --crate-name art src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=2199dfbfcd4391b3 -L dependency=/opt/rustwide/target/debug/deps --extern hsl=/opt/rustwide/target/debug/deps/libhsl-d5f9d622c8599a14.rmeta --extern js_sys=/opt/rustwide/target/debug/deps/libjs_sys-c1e3a24a6976d54c.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-f2624fc474fb822c.rmeta --extern wasm_bindgen=/opt/rustwide/target/debug/deps/libwasm_bindgen-f35dbf771fcd5acf.rmeta --extern web_sys=/opt/rustwide/target/debug/deps/libweb_sys-60ad1a10ea5960c4.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "47a05e666c6ad6496f7f57261232ae1b6ee845f8e9f811c02e4ae8a765712134", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47a05e666c6ad6496f7f57261232ae1b6ee845f8e9f811c02e4ae8a765712134", kill_on_drop: false }`
[INFO] [stdout] 47a05e666c6ad6496f7f57261232ae1b6ee845f8e9f811c02e4ae8a765712134
