[INFO] cloning repository https://github.com/dcchut/aoc2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dcchut/aoc2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdcchut%2Faoc2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdcchut%2Faoc2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd41eb3af8a2fdda3b3da2eb1d314308719e22b9
[INFO] documenting dcchut/aoc2021 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdcchut%2Faoc2021" "/workspace/builds/worker-29/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-29/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dcchut/aoc2021 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-29/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/dcchut/aoc2021
[INFO] finished tweaking git repo https://github.com/dcchut/aoc2021
[INFO] tweaked toml for git repo https://github.com/dcchut/aoc2021 written to /workspace/builds/worker-29/source/Cargo.toml
[INFO] crate git repo https://github.com/dcchut/aoc2021 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rprompt v1.0.5
[INFO] [stderr]   Downloaded defaultmap v0.5.0
[INFO] [stderr]   Downloaded ryu v1.0.7
[INFO] [stderr]   Downloaded wide v0.7.3
[INFO] [stderr]   Downloaded pathfinding v2.2.3
[INFO] [stderr]   Downloaded from_iter v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8a4f4161c460e98ccedf5997120d3f1a72ba82361df220cfb4325f639678509
[INFO] running `Command { std: "docker" "start" "-a" "d8a4f4161c460e98ccedf5997120d3f1a72ba82361df220cfb4325f639678509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8a4f4161c460e98ccedf5997120d3f1a72ba82361df220cfb4325f639678509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8a4f4161c460e98ccedf5997120d3f1a72ba82361df220cfb4325f639678509", kill_on_drop: false }`
[INFO] [stdout] d8a4f4161c460e98ccedf5997120d3f1a72ba82361df220cfb4325f639678509
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-29/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d92c0f6f5b35b8e355c3a8be45d22fad6c976ea0ecc7f70fa6b53133a182302
[INFO] running `Command { std: "docker" "start" "-a" "0d92c0f6f5b35b8e355c3a8be45d22fad6c976ea0ecc7f70fa6b53133a182302", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.33
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling libc v0.2.109
[INFO] [stderr]     Checking bytemuck v1.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.131
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling serde v1.0.131
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]    Compiling crossbeam-queue v0.3.2
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]    Compiling paste v1.0.6
[INFO] [stderr]     Checking fixedbitset v0.4.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling serde_json v1.0.72
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking ryu v1.0.7
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]     Checking defaultmap v0.5.0
[INFO] [stderr]     Checking from_iter v1.0.0
[INFO] [stderr]     Checking rprompt v1.0.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]     Checking safe_arch v0.6.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking wide v0.7.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking petgraph v0.6.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking approx v0.5.0
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking ordered-float v2.8.0
[INFO] [stderr]     Checking crossbeam v0.8.1
[INFO] [stderr]     Checking pathfinding v2.2.3
[INFO] [stderr]     Checking num-iter v0.1.42
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking simba v0.6.0
[INFO] [stderr]     Checking num-rational v0.4.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling nalgebra-macros v0.1.0
[INFO] [stderr]     Checking nalgebra v0.29.0
[INFO] [stderr]  Documenting aoc2021 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(drain_filter)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(array_windows)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(const_eval_limit)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `aoc2021`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name aoc2021 src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=bd492849cd935893 -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-2b51f40009cfbc32.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-0d4cc8212c10f011.rmeta --extern defaultmap=/opt/rustwide/target/debug/deps/libdefaultmap-e718ca58152b7180.rmeta --extern from_iter=/opt/rustwide/target/debug/deps/libfrom_iter-0f6146770e097f77.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-c3e915a3b5e36158.rmeta --extern nalgebra=/opt/rustwide/target/debug/deps/libnalgebra-621309bd4ce168ed.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-62654a9e0915dbad.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-f04befd43a542516.rmeta --extern ordered_float=/opt/rustwide/target/debug/deps/libordered_float-a37add543847d718.rmeta --extern pathfinding=/opt/rustwide/target/debug/deps/libpathfinding-84129cb1ed0ba5be.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-1c9852d083bf455b.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-5be417555eb433d4.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-01d9c5dc0d72cf1f.rmeta --extern rprompt=/opt/rustwide/target/debug/deps/librprompt-cc6b37ee74905fae.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-5228d4972a782e7b.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-03433ab0eff06e93.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "0d92c0f6f5b35b8e355c3a8be45d22fad6c976ea0ecc7f70fa6b53133a182302", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d92c0f6f5b35b8e355c3a8be45d22fad6c976ea0ecc7f70fa6b53133a182302", kill_on_drop: false }`
[INFO] [stdout] 0d92c0f6f5b35b8e355c3a8be45d22fad6c976ea0ecc7f70fa6b53133a182302