[INFO] cloning repository https://github.com/davidszotten/advent-of-code-2017
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidszotten/advent-of-code-2017" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidszotten%2Fadvent-of-code-2017", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidszotten%2Fadvent-of-code-2017'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e96ce8e41cba8632888e78694298b6a88ea498ce
[INFO] documenting davidszotten/advent-of-code-2017 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidszotten%2Fadvent-of-code-2017" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidszotten/advent-of-code-2017 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davidszotten/advent-of-code-2017
[INFO] finished tweaking git repo https://github.com/davidszotten/advent-of-code-2017
[INFO] tweaked toml for git repo https://github.com/davidszotten/advent-of-code-2017 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/davidszotten/advent-of-code-2017 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4f0f0b20dd75d33429f5098c27f086c722947c84d47f746d76ba7102718df97
[INFO] running `Command { std: "docker" "start" "-a" "c4f0f0b20dd75d33429f5098c27f086c722947c84d47f746d76ba7102718df97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4f0f0b20dd75d33429f5098c27f086c722947c84d47f746d76ba7102718df97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4f0f0b20dd75d33429f5098c27f086c722947c84d47f746d76ba7102718df97", kill_on_drop: false }`
[INFO] [stdout] c4f0f0b20dd75d33429f5098c27f086c722947c84d47f746d76ba7102718df97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87c3e3212b0066fd7c2c2e482a66e34df41ca887bb87f9702f2815a47c49ef54
[INFO] running `Command { std: "docker" "start" "-a" "87c3e3212b0066fd7c2c2e482a66e34df41ca887bb87f9702f2815a47c49ef54", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]     Checking rustc-demangle v0.1.5
[INFO] [stderr]     Checking ansi_term v0.10.2
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking atty v0.2.3
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking clap v2.28.0
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[INFO] [stderr]     Checking backtrace v0.3.4
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]  Documenting aoc2017 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(conservative_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(match_default_bindings)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `match_default_bindings` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(slice_rotate)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(universal_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `universal_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[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 `aoc2017`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name aoc2017 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 clap=/opt/rustwide/target/debug/deps/libclap-83516d974d86fe87.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-d140b5de3aeec233.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-0b29daba8c373f35.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "87c3e3212b0066fd7c2c2e482a66e34df41ca887bb87f9702f2815a47c49ef54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87c3e3212b0066fd7c2c2e482a66e34df41ca887bb87f9702f2815a47c49ef54", kill_on_drop: false }`
[INFO] [stdout] 87c3e3212b0066fd7c2c2e482a66e34df41ca887bb87f9702f2815a47c49ef54
