[INFO] cloning repository https://github.com/kofeebrian/hpa-term-project-2022
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kofeebrian/hpa-term-project-2022" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkofeebrian%2Fhpa-term-project-2022", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkofeebrian%2Fhpa-term-project-2022'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2e3d2af1fe4f91a8ce63dd61ee69bdfc9f3ba58c
[INFO] documenting kofeebrian/hpa-term-project-2022 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%2Fkofeebrian%2Fhpa-term-project-2022" "/workspace/builds/worker-34/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-34/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kofeebrian/hpa-term-project-2022 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/kofeebrian/hpa-term-project-2022
[INFO] finished tweaking git repo https://github.com/kofeebrian/hpa-term-project-2022
[INFO] tweaked toml for git repo https://github.com/kofeebrian/hpa-term-project-2022 written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] crate git repo https://github.com/kofeebrian/hpa-term-project-2022 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] 36ace0552dd8df3d3853377144ed52fb4846d32eeb580ed2ca818899795608a4
[INFO] running `Command { std: "docker" "start" "-a" "36ace0552dd8df3d3853377144ed52fb4846d32eeb580ed2ca818899795608a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "36ace0552dd8df3d3853377144ed52fb4846d32eeb580ed2ca818899795608a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36ace0552dd8df3d3853377144ed52fb4846d32eeb580ed2ca818899795608a4", kill_on_drop: false }`
[INFO] [stdout] 36ace0552dd8df3d3853377144ed52fb4846d32eeb580ed2ca818899795608a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] dcffdcd64d68950dce5c2491cf28c6dc1a4ec2698a50d5bcd342b56cc2db30dc
[INFO] running `Command { std: "docker" "start" "-a" "dcffdcd64d68950dce5c2491cf28c6dc1a4ec2698a50d5bcd342b56cc2db30dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.8
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]  Documenting prog 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(unchecked_math)]
[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 `prog`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type bin --crate-name prog 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=77ec055b247ca597 -L dependency=/opt/rustwide/target/debug/deps --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-71a8a0ab68acf518.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-a852a6b752851bbf.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "dcffdcd64d68950dce5c2491cf28c6dc1a4ec2698a50d5bcd342b56cc2db30dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcffdcd64d68950dce5c2491cf28c6dc1a4ec2698a50d5bcd342b56cc2db30dc", kill_on_drop: false }`
[INFO] [stdout] dcffdcd64d68950dce5c2491cf28c6dc1a4ec2698a50d5bcd342b56cc2db30dc