[INFO] fetching crate grades 0.1.1...
[INFO] documenting grades-0.1.1 against beta-2023-04-20 for beta-1.70-rustdoc-1
[INFO] extracting crate grades 0.1.1 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate grades 0.1.1 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate grades 0.1.1
[INFO] finished tweaking crates.io crate grades 0.1.1
[INFO] tweaked toml for crates.io crate grades 0.1.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate grades 0.1.1 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-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_yaml v0.9.19
[INFO] [stderr]   Downloaded fraction v0.13.1
[INFO] [stderr]   Downloaded serde_derive v1.0.154
[INFO] [stderr]   Downloaded serde v1.0.154
[INFO] [stderr]   Downloaded unsafe-libyaml v0.2.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 842aff7f7778b745228845c3be0d1e83aca3b34111dddcf378c2878df457ff6a
[INFO] running `Command { std: "docker" "start" "-a" "842aff7f7778b745228845c3be0d1e83aca3b34111dddcf378c2878df457ff6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "842aff7f7778b745228845c3be0d1e83aca3b34111dddcf378c2878df457ff6a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "842aff7f7778b745228845c3be0d1e83aca3b34111dddcf378c2878df457ff6a", kill_on_drop: false }`
[INFO] [stdout] 842aff7f7778b745228845c3be0d1e83aca3b34111dddcf378c2878df457ff6a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9a6b0ee5b2266fc853bb7eb2da3f9196eda661e8be7abcf17b7c89c4fcfcd91
[INFO] running `Command { std: "docker" "start" "-a" "e9a6b0ee5b2266fc853bb7eb2da3f9196eda661e8be7abcf17b7c89c4fcfcd91", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.51
[INFO] [stderr]    Compiling quote v1.0.23
[INFO] [stderr]    Compiling unicode-ident v1.0.8
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling serde_derive v1.0.154
[INFO] [stderr]    Compiling io-lifetimes v1.0.6
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling serde v1.0.154
[INFO] [stderr]    Compiling rustix v0.36.9
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]     Checking linux-raw-sys v0.1.4
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking os_str_bytes v6.4.1
[INFO] [stderr]     Checking termcolor v1.2.0
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]     Checking clap_lex v0.3.2
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking unsafe-libyaml v0.2.7
[INFO] [stderr]     Checking pretty_assertions v1.3.0
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking dirs-sys v0.3.7
[INFO] [stderr]     Checking dirs v4.0.0
[INFO] [stderr]     Checking xdg v2.4.1
[INFO] [stderr]     Checking is-terminal v0.4.4
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking fraction v0.13.1
[INFO] [stderr]    Compiling clap_derive v4.1.8
[INFO] [stderr]     Checking clap v4.1.8
[INFO] [stderr]     Checking serde_yaml v0.9.19
[INFO] [stderr]     Checking ron v0.8.0
[INFO] [stderr]  Documenting grades v0.1.1 (/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 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: `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=5b24473649ca6be6 -L dependency=/opt/rustwide/target/debug/deps --extern clap=/opt/rustwide/target/debug/deps/libclap-269a96b31cf38bcf.rmeta --extern fraction=/opt/rustwide/target/debug/deps/libfraction-d05b3fd2b6f7fd73.rmeta --extern pretty_assertions=/opt/rustwide/target/debug/deps/libpretty_assertions-81d2fc220d6baa1c.rmeta --extern ron=/opt/rustwide/target/debug/deps/libron-f7dd8a20db405eec.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-2ecb22a9b681e98b.rmeta --extern serde_yaml=/opt/rustwide/target/debug/deps/libserde_yaml-c5f24a16301523f9.rmeta --extern xdg=/opt/rustwide/target/debug/deps/libxdg-6b4a3cff789893ac.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "e9a6b0ee5b2266fc853bb7eb2da3f9196eda661e8be7abcf17b7c89c4fcfcd91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9a6b0ee5b2266fc853bb7eb2da3f9196eda661e8be7abcf17b7c89c4fcfcd91", kill_on_drop: false }`
[INFO] [stdout] e9a6b0ee5b2266fc853bb7eb2da3f9196eda661e8be7abcf17b7c89c4fcfcd91
