[INFO] cloning repository https://github.com/python357-1/four-magic
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/python357-1/four-magic" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpython357-1%2Ffour-magic", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpython357-1%2Ffour-magic'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86d6beae474f14bdb719e3ba1acb0c1a020c39c5
[INFO] documenting python357-1/four-magic 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%2Fpython357-1%2Ffour-magic" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/python357-1/four-magic 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/python357-1/four-magic
[INFO] finished tweaking git repo https://github.com/python357-1/four-magic
[INFO] tweaked toml for git repo https://github.com/python357-1/four-magic written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/python357-1/four-magic 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] c73641d2f653f321e641b7a1c4277ca4c84ecf6be7d33c1f032f2d5c4ef65e6d
[INFO] running `Command { std: "docker" "start" "-a" "c73641d2f653f321e641b7a1c4277ca4c84ecf6be7d33c1f032f2d5c4ef65e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c73641d2f653f321e641b7a1c4277ca4c84ecf6be7d33c1f032f2d5c4ef65e6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c73641d2f653f321e641b7a1c4277ca4c84ecf6be7d33c1f032f2d5c4ef65e6d", kill_on_drop: false }`
[INFO] [stdout] c73641d2f653f321e641b7a1c4277ca4c84ecf6be7d33c1f032f2d5c4ef65e6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 9fa516f306de0e7b9a2584c02590ec0a8a8f95a733f3e9c0b45da56933c7af63
[INFO] running `Command { std: "docker" "start" "-a" "9fa516f306de0e7b9a2584c02590ec0a8a8f95a733f3e9c0b45da56933c7af63", kill_on_drop: false }`
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]  Documenting four-magic v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: comparison operators cannot be chained
[INFO] [stdout]  --> src/main.rs:9:42
[INFO] [stdout]   |
[INFO] [stdout] 9 |     while encoded_number.chars().count() != 4 >{
[INFO] [stdout]   |     -----                                ^^   ^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     while parsing the condition of this `while` expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `four-magic`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name four_magic 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=0be3ce561d43ca8d -L dependency=/opt/rustwide/target/debug/deps --extern text_io=/opt/rustwide/target/debug/deps/libtext_io-930363d1f3871fcf.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "9fa516f306de0e7b9a2584c02590ec0a8a8f95a733f3e9c0b45da56933c7af63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9fa516f306de0e7b9a2584c02590ec0a8a8f95a733f3e9c0b45da56933c7af63", kill_on_drop: false }`
[INFO] [stdout] 9fa516f306de0e7b9a2584c02590ec0a8a8f95a733f3e9c0b45da56933c7af63