[INFO] fetching crate rslab 0.2.1...
[INFO] documenting rslab-0.2.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate rslab 0.2.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate rslab 0.2.1 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 rslab 0.2.1
[INFO] finished tweaking crates.io crate rslab 0.2.1
[INFO] tweaked toml for crates.io crate rslab 0.2.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate rslab 0.2.1 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 preprint v0.1.0
[INFO] [stderr]   Downloaded buddy_system_allocator v0.8.0
[INFO] [stderr]   Downloaded float-ord v0.3.2
[INFO] [stderr]   Downloaded linked_list_allocator v0.10.4
[INFO] [stderr]   Downloaded volatile v0.4.5
[INFO] [stderr]   Downloaded simple-chunk-allocator v0.1.5
[INFO] [stderr]   Downloaded spin v0.7.1
[INFO] [stderr]   Downloaded average v0.13.1
[INFO] [stderr]   Downloaded easy-cast v0.4.4
[INFO] [stderr]   Downloaded spinning_top v0.2.4
[INFO] [stderr]   Downloaded raw-cpuid v10.6.0
[INFO] [stderr]   Downloaded libm v0.2.5
[INFO] [stderr]   Downloaded x86 v0.51.0
[INFO] [stderr]   Downloaded doubly-linked-list v0.2.0
[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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 588584da755a2cad98fcb730f2452fbefbb80d82b295c55acd0257e1b913ee94
[INFO] running `Command { std: "docker" "start" "-a" "588584da755a2cad98fcb730f2452fbefbb80d82b295c55acd0257e1b913ee94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "588584da755a2cad98fcb730f2452fbefbb80d82b295c55acd0257e1b913ee94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "588584da755a2cad98fcb730f2452fbefbb80d82b295c55acd0257e1b913ee94", kill_on_drop: false }`
[INFO] [stdout] 588584da755a2cad98fcb730f2452fbefbb80d82b295c55acd0257e1b913ee94
[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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6eb664c83ec829f01357cb3fde97c8128418a5a5d486b9716b634d0bf1de439d
[INFO] running `Command { std: "docker" "start" "-a" "6eb664c83ec829f01357cb3fde97c8128418a5a5d486b9716b634d0bf1de439d", kill_on_drop: false }`
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking volatile v0.4.5
[INFO] [stderr]     Checking preprint v0.1.0
[INFO] [stderr]     Checking doubly-linked-list v0.2.0
[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/doubly-linked-list-0.2.0/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(core_intrinsics)]
[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 `doubly-linked-list` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6eb664c83ec829f01357cb3fde97c8128418a5a5d486b9716b634d0bf1de439d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eb664c83ec829f01357cb3fde97c8128418a5a5d486b9716b634d0bf1de439d", kill_on_drop: false }`
[INFO] [stdout] 6eb664c83ec829f01357cb3fde97c8128418a5a5d486b9716b634d0bf1de439d
[INFO] documenting rslab-0.2.1 against beta-2023-12-22 for beta-1.76-rustdoc-1
[INFO] extracting crate rslab 0.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate rslab 0.2.1 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 crates.io crate rslab 0.2.1
[INFO] finished tweaking crates.io crate rslab 0.2.1
[INFO] tweaked toml for crates.io crate rslab 0.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate rslab 0.2.1 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" "+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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7577df721d2ebcca63882f86cb48b1309a9b1b73647aa8af87f237572271f586
[INFO] running `Command { std: "docker" "start" "-a" "7577df721d2ebcca63882f86cb48b1309a9b1b73647aa8af87f237572271f586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7577df721d2ebcca63882f86cb48b1309a9b1b73647aa8af87f237572271f586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7577df721d2ebcca63882f86cb48b1309a9b1b73647aa8af87f237572271f586", kill_on_drop: false }`
[INFO] [stdout] 7577df721d2ebcca63882f86cb48b1309a9b1b73647aa8af87f237572271f586
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e089ec0cde09d63b89f24a0660dfdd4766b6c05cf1f5deb85e478f7e3d8c781d
[INFO] running `Command { std: "docker" "start" "-a" "e089ec0cde09d63b89f24a0660dfdd4766b6c05cf1f5deb85e478f7e3d8c781d", kill_on_drop: false }`
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking volatile v0.4.5
[INFO] [stderr]     Checking preprint v0.1.0
[INFO] [stderr]     Checking doubly-linked-list v0.2.0
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/doubly-linked-list-0.2.0/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(core_intrinsics)]
[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 compile `doubly-linked-list` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "e089ec0cde09d63b89f24a0660dfdd4766b6c05cf1f5deb85e478f7e3d8c781d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e089ec0cde09d63b89f24a0660dfdd4766b6c05cf1f5deb85e478f7e3d8c781d", kill_on_drop: false }`
[INFO] [stdout] e089ec0cde09d63b89f24a0660dfdd4766b6c05cf1f5deb85e478f7e3d8c781d
