[INFO] cloning repository https://github.com/CheaterCodes/easy-cluster
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CheaterCodes/easy-cluster" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCheaterCodes%2Feasy-cluster", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCheaterCodes%2Feasy-cluster'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d376a629fcf3ec2861fe3f88db6408d3254663b5
[INFO] documenting CheaterCodes/easy-cluster against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCheaterCodes%2Feasy-cluster" "/workspace/builds/worker-78/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-78/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/CheaterCodes/easy-cluster on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/CheaterCodes/easy-cluster
[INFO] finished tweaking git repo https://github.com/CheaterCodes/easy-cluster
[INFO] tweaked toml for git repo https://github.com/CheaterCodes/easy-cluster written to /workspace/builds/worker-78/source/Cargo.toml
[INFO] crate git repo https://github.com/CheaterCodes/easy-cluster already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded named-binary-tag v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6cdf45cd4e58d36f018849d6a0d5b1db0776e5d34a6a5adf8c2a2172e4a9fc9
[INFO] running `Command { std: "docker" "start" "-a" "a6cdf45cd4e58d36f018849d6a0d5b1db0776e5d34a6a5adf8c2a2172e4a9fc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6cdf45cd4e58d36f018849d6a0d5b1db0776e5d34a6a5adf8c2a2172e4a9fc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6cdf45cd4e58d36f018849d6a0d5b1db0776e5d34a6a5adf8c2a2172e4a9fc9", kill_on_drop: false }`
[INFO] [stdout] a6cdf45cd4e58d36f018849d6a0d5b1db0776e5d34a6a5adf8c2a2172e4a9fc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-78/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 704f661bca309f13b87c714266c6dfd7ef74d54841e67a6ca4a90350186b58d4
[INFO] running `Command { std: "docker" "start" "-a" "704f661bca309f13b87c714266c6dfd7ef74d54841e67a6ca4a90350186b58d4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking flate2 v1.0.20
[INFO] [stderr]     Checking named-binary-tag v0.6.0
[INFO] [stderr]     Checking minecraft-schematics v0.1.0 (/opt/rustwide/workdir/minecraft-schematics)
[INFO] [stderr]  Documenting easy-cluster 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `easy-cluster`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name easy_cluster src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern minecraft_schematics=/opt/rustwide/target/debug/deps/libminecraft_schematics-0e704552f5489a00.rmeta --extern petgraph=/opt/rustwide/target/debug/deps/libpetgraph-2e9d92a26af4e9ff.rmeta --extern png=/opt/rustwide/target/debug/deps/libpng-9b8f5273ad561a7c.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "704f661bca309f13b87c714266c6dfd7ef74d54841e67a6ca4a90350186b58d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "704f661bca309f13b87c714266c6dfd7ef74d54841e67a6ca4a90350186b58d4", kill_on_drop: false }`
[INFO] [stdout] 704f661bca309f13b87c714266c6dfd7ef74d54841e67a6ca4a90350186b58d4
