[INFO] cloning repository https://github.com/Eosis/AoC2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Eosis/AoC2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEosis%2FAoC2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEosis%2FAoC2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18ed7c647304c9d2f8be5a3ec497e316f9de250a
[INFO] documenting Eosis/AoC2021 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEosis%2FAoC2021" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Eosis/AoC2021 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/Eosis/AoC2021
[INFO] finished tweaking git repo https://github.com/Eosis/AoC2021
[INFO] tweaked toml for git repo https://github.com/Eosis/AoC2021 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Eosis/AoC2021 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e1e48348635e2f4c7380fe0452a23124328258f081368df5d34b9d658ae74eea
[INFO] running `Command { std: "docker" "start" "-a" "e1e48348635e2f4c7380fe0452a23124328258f081368df5d34b9d658ae74eea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e1e48348635e2f4c7380fe0452a23124328258f081368df5d34b9d658ae74eea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1e48348635e2f4c7380fe0452a23124328258f081368df5d34b9d658ae74eea", kill_on_drop: false }`
[INFO] [stdout] e1e48348635e2f4c7380fe0452a23124328258f081368df5d34b9d658ae74eea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8388974c4f5c5612e8c58cb79b48460fb60d36198fae6e8f9426a70d7329d8a3
[INFO] running `Command { std: "docker" "start" "-a" "8388974c4f5c5612e8c58cb79b48460fb60d36198fae6e8f9426a70d7329d8a3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling futures-core v0.3.18
[INFO] [stderr]    Compiling futures-channel v0.3.18
[INFO] [stderr]    Compiling futures-task v0.3.18
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking futures-sink v0.3.18
[INFO] [stderr]     Checking futures-io v0.3.18
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking funty v1.2.0
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking peeking_take_while v1.0.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking wyz v0.4.0
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking async-rwlock v1.3.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking counter v0.5.2
[INFO] [stderr]     Checking bitvec v0.22.3
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]    Compiling darling_core v0.13.1
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling argh_derive v0.1.4
[INFO] [stderr]    Compiling darling_macro v0.13.1
[INFO] [stderr]     Checking argh v0.1.4
[INFO] [stderr]    Compiling darling v0.13.1
[INFO] [stderr]    Compiling cached_proc_macro v0.7.1
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking cached v0.26.2
[INFO] [stderr]  Documenting aoc_2020 v0.1.0 (/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(int_abs_diff)]
[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 `aoc_2020`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name aoc_2020 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=dae111ebc1faa4b3 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-8ce4b7cd40c1573c.rmeta --extern argh=/opt/rustwide/target/debug/deps/libargh-53ac320d8c323689.rmeta --extern bit_vec=/opt/rustwide/target/debug/deps/libbit_vec-6f34190b003b90ae.rmeta --extern bitvec=/opt/rustwide/target/debug/deps/libbitvec-e36b805de111542a.rmeta --extern cached=/opt/rustwide/target/debug/deps/libcached-903a7bebd02da4ec.rmeta --extern counter=/opt/rustwide/target/debug/deps/libcounter-4b9951450f7151a6.rmeta --extern hashbrown=/opt/rustwide/target/debug/deps/libhashbrown-92224d0d2b3385ef.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-e10dc731f9ac719c.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-701e134f05ff346a.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-81eba19251b12311.rmeta --extern peeking_take_while=/opt/rustwide/target/debug/deps/libpeeking_take_while-5af1bee997347028.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-5d8681f266e26029.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-93251fd65088a55f.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8388974c4f5c5612e8c58cb79b48460fb60d36198fae6e8f9426a70d7329d8a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8388974c4f5c5612e8c58cb79b48460fb60d36198fae6e8f9426a70d7329d8a3", kill_on_drop: false }`
[INFO] [stdout] 8388974c4f5c5612e8c58cb79b48460fb60d36198fae6e8f9426a70d7329d8a3