[INFO] cloning repository https://github.com/calebissharp/advent-of-code-2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/calebissharp/advent-of-code-2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcalebissharp%2Fadvent-of-code-2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcalebissharp%2Fadvent-of-code-2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 432edc80756d123c3f4ddc16f5c17a75be1fc41a
[INFO] documenting calebissharp/advent-of-code-2021 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%2Fcalebissharp%2Fadvent-of-code-2021" "/workspace/builds/worker-30/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-30/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/calebissharp/advent-of-code-2021 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] started tweaking git repo https://github.com/calebissharp/advent-of-code-2021
[INFO] finished tweaking git repo https://github.com/calebissharp/advent-of-code-2021
[INFO] tweaked toml for git repo https://github.com/calebissharp/advent-of-code-2021 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] crate git repo https://github.com/calebissharp/advent-of-code-2021 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] [stdout] 281746a544ce0df187b86e014419da44d7cce7fadd804acd89abc738520f886b
[INFO] running `Command { std: "docker" "start" "-a" "281746a544ce0df187b86e014419da44d7cce7fadd804acd89abc738520f886b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "281746a544ce0df187b86e014419da44d7cce7fadd804acd89abc738520f886b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "281746a544ce0df187b86e014419da44d7cce7fadd804acd89abc738520f886b", kill_on_drop: false }`
[INFO] [stdout] 281746a544ce0df187b86e014419da44d7cce7fadd804acd89abc738520f886b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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] [stdout] cefdfa52af14f36466a83958c4930658c95202b826b1d8dd4fff8aaa50bacbb6
[INFO] running `Command { std: "docker" "start" "-a" "cefdfa52af14f36466a83958c4930658c95202b826b1d8dd4fff8aaa50bacbb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]  Documenting aoc-2 v0.1.0 (/opt/rustwide/workdir/solutions/2)
[INFO] [stderr]  Documenting aoc-3 v0.1.0 (/opt/rustwide/workdir/solutions/3)
[INFO] [stderr]  Documenting aoc-1 v0.1.0 (/opt/rustwide/workdir/solutions/1)
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking ndarray v0.15.4
[INFO] [stderr]  Documenting aoc-5 v0.1.0 (/opt/rustwide/workdir/solutions/5)
[INFO] [stderr]  Documenting aoc-4 v0.1.0 (/opt/rustwide/workdir/solutions/4)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> solutions/4/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[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-4`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name aoc_4 solutions/4/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=719e0ce447910ae8 -L dependency=/opt/rustwide/target/debug/deps --extern ndarray=/opt/rustwide/target/debug/deps/libndarray-025ef09e07d31c13.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "cefdfa52af14f36466a83958c4930658c95202b826b1d8dd4fff8aaa50bacbb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cefdfa52af14f36466a83958c4930658c95202b826b1d8dd4fff8aaa50bacbb6", kill_on_drop: false }`
[INFO] [stdout] cefdfa52af14f36466a83958c4930658c95202b826b1d8dd4fff8aaa50bacbb6