[INFO] fetching crate grades 0.2.0...
[INFO] documenting grades-0.2.0 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate grades 0.2.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate grades 0.2.0 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 grades 0.2.0
[INFO] finished tweaking crates.io crate grades 0.2.0
[INFO] tweaked toml for crates.io crate grades 0.2.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate grades 0.2.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded xdg v2.5.0
[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" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15388eaac454ae62187363eb75cac307aa58cf3a66cc9e9c4487fcd5d783f0eb
[INFO] running `Command { std: "docker" "start" "-a" "15388eaac454ae62187363eb75cac307aa58cf3a66cc9e9c4487fcd5d783f0eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15388eaac454ae62187363eb75cac307aa58cf3a66cc9e9c4487fcd5d783f0eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15388eaac454ae62187363eb75cac307aa58cf3a66cc9e9c4487fcd5d783f0eb", kill_on_drop: false }`
[INFO] [stdout] 15388eaac454ae62187363eb75cac307aa58cf3a66cc9e9c4487fcd5d783f0eb
[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] 3fc66e50e0deb8afdd498fa710a6871c8787f75373d9948e5724f85f93e32aae
[INFO] running `Command { std: "docker" "start" "-a" "3fc66e50e0deb8afdd498fa710a6871c8787f75373d9948e5724f85f93e32aae", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.162
[INFO] [stderr]     Checking linux-raw-sys v0.3.7
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling serde v1.0.162
[INFO] [stderr]     Checking anstyle-parse v0.2.0
[INFO] [stderr]     Checking anstyle v1.0.0
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking clap_lex v0.4.1
[INFO] [stderr]     Checking indexmap v1.9.3
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking unsafe-libyaml v0.2.8
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking home v0.5.5
[INFO] [stderr]     Checking xdg v2.5.0
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking num-rational v0.4.1
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking is-terminal v0.4.7
[INFO] [stderr]     Checking fraction v0.13.1
[INFO] [stderr]     Checking anstream v0.3.2
[INFO] [stderr]     Checking clap_builder v4.2.7
[INFO] [stderr]    Compiling clap_derive v4.2.0
[INFO] [stderr]     Checking clap v4.2.7
[INFO] [stderr]     Checking ron v0.8.0
[INFO] [stderr]     Checking serde_yaml v0.9.21
[INFO] [stderr]  Documenting grades v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_group_by)]
[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 `grades`
[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 bin --crate-name grades src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=5c5b284bd036da74 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-db78b1732c06d56f.rmeta --extern fraction=/opt/rustwide/target/debug/deps/libfraction-6cd76eeeff260ec7.rmeta --extern pretty_assertions=/opt/rustwide/target/debug/deps/libpretty_assertions-a3d5bacb46eb8855.rmeta --extern ron=/opt/rustwide/target/debug/deps/libron-d9b482694ccdff83.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-ef49108e1bb9c274.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-4c5ca0eca38378f9.rmeta --extern xdg=/opt/rustwide/target/debug/deps/libxdg-68a5caaff0d0227d.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3fc66e50e0deb8afdd498fa710a6871c8787f75373d9948e5724f85f93e32aae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fc66e50e0deb8afdd498fa710a6871c8787f75373d9948e5724f85f93e32aae", kill_on_drop: false }`
[INFO] [stdout] 3fc66e50e0deb8afdd498fa710a6871c8787f75373d9948e5724f85f93e32aae
[INFO] documenting grades-0.2.0 against beta-2024-02-10 for beta-1.77-rustdoc-1
[INFO] extracting crate grades 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate grades 0.2.0 on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate grades 0.2.0
[INFO] finished tweaking crates.io crate grades 0.2.0
[INFO] tweaked toml for crates.io crate grades 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate grades 0.2.0 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" "+beta-2024-02-10" "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-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec76e0ecf481f7f8057fb18af3ad7ed456f7981dffdee522a0f385c75fc037b6
[INFO] running `Command { std: "docker" "start" "-a" "ec76e0ecf481f7f8057fb18af3ad7ed456f7981dffdee522a0f385c75fc037b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec76e0ecf481f7f8057fb18af3ad7ed456f7981dffdee522a0f385c75fc037b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec76e0ecf481f7f8057fb18af3ad7ed456f7981dffdee522a0f385c75fc037b6", kill_on_drop: false }`
[INFO] [stdout] ec76e0ecf481f7f8057fb18af3ad7ed456f7981dffdee522a0f385c75fc037b6
[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-2024-02-10" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8edf8b60792331b4fd46382bfe17e3d29ef1e5106dffa4a1cb095eb89a66042e
[INFO] running `Command { std: "docker" "start" "-a" "8edf8b60792331b4fd46382bfe17e3d29ef1e5106dffa4a1cb095eb89a66042e", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling quote v1.0.27
[INFO] [stderr]    Compiling libc v0.2.144
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling io-lifetimes v1.0.10
[INFO] [stderr]    Compiling rustix v0.37.19
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.162
[INFO] [stderr]     Checking linux-raw-sys v0.3.7
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling serde v1.0.162
[INFO] [stderr]     Checking anstyle-parse v0.2.0
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]     Checking anstyle v1.0.0
[INFO] [stderr]     Checking anstyle-query v1.0.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking clap_lex v0.4.1
[INFO] [stderr]     Checking indexmap v1.9.3
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking unsafe-libyaml v0.2.8
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking home v0.5.5
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking xdg v2.5.0
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking num-rational v0.4.1
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking is-terminal v0.4.7
[INFO] [stderr]     Checking fraction v0.13.1
[INFO] [stderr]     Checking anstream v0.3.2
[INFO] [stderr]     Checking clap_builder v4.2.7
[INFO] [stderr]    Compiling clap_derive v4.2.0
[INFO] [stderr]     Checking clap v4.2.7
[INFO] [stderr]     Checking ron v0.8.0
[INFO] [stderr]     Checking serde_yaml v0.9.21
[INFO] [stderr]  Documenting grades v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_group_by)]
[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 `grades`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/beta-2024-02-10-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type bin --crate-name grades src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=40a4ac2b2826e965 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-5b226e287c1e1b54.rmeta --extern fraction=/opt/rustwide/target/debug/deps/libfraction-0100f3f75e303d01.rmeta --extern pretty_assertions=/opt/rustwide/target/debug/deps/libpretty_assertions-37799873a07a49c4.rmeta --extern ron=/opt/rustwide/target/debug/deps/libron-44ed8a7084affa01.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-f3d40aa4152bab2d.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-2e9a50e2a3e19f2f.rmeta --extern xdg=/opt/rustwide/target/debug/deps/libxdg-74ebdc1cfc5d3fc4.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8edf8b60792331b4fd46382bfe17e3d29ef1e5106dffa4a1cb095eb89a66042e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8edf8b60792331b4fd46382bfe17e3d29ef1e5106dffa4a1cb095eb89a66042e", kill_on_drop: false }`
[INFO] [stdout] 8edf8b60792331b4fd46382bfe17e3d29ef1e5106dffa4a1cb095eb89a66042e
