[INFO] cloning repository https://github.com/cleech/adventofcode2016
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cleech/adventofcode2016" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcleech%2Fadventofcode2016", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcleech%2Fadventofcode2016'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] caab75d8a62b0f0fc1b33a91b81d1d045917d237
[INFO] documenting cleech/adventofcode2016 against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcleech%2Fadventofcode2016" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cleech/adventofcode2016 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cleech/adventofcode2016
[INFO] finished tweaking git repo https://github.com/cleech/adventofcode2016
[INFO] tweaked toml for git repo https://github.com/cleech/adventofcode2016 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/cleech/adventofcode2016 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ba62459b9c95670efca5d9c73b36e234cef457bc642b3371ac34ee3a608ef17e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ba62459b9c95670efca5d9c73b36e234cef457bc642b3371ac34ee3a608ef17e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba62459b9c95670efca5d9c73b36e234cef457bc642b3371ac34ee3a608ef17e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba62459b9c95670efca5d9c73b36e234cef457bc642b3371ac34ee3a608ef17e", kill_on_drop: false }`
[INFO] [stdout] ba62459b9c95670efca5d9c73b36e234cef457bc642b3371ac34ee3a608ef17e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 61ef46c73b12e01d0afc69ea1251376cefc96b9ab0065d6984069463809df859
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "61ef46c73b12e01d0afc69ea1251376cefc96b9ab0065d6984069463809df859", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.41
[INFO] [stderr]     Checking odds v0.2.25
[INFO] [stderr]     Checking nom v2.0.1
[INFO] [stderr]     Checking scan_fmt v0.1.1
[INFO] [stderr]     Checking lazy_static v0.2.2
[INFO] [stderr]     Checking permutohedron v0.2.2
[INFO] [stderr]     Checking num_cpus v1.2.1
[INFO] [stderr]     Checking itertools v0.5.8
[INFO] [stderr]     Checking clap v2.19.3
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking nalgebra v0.10.1
[INFO] [stderr]     Checking nodrop v0.1.8
[INFO] [stderr]     Checking arrayvec v0.3.20
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]  Documenting adventofcode2016 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/bin/day05.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(step_by)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/bin/day11-astar.rs:57:13
[INFO] [stdout]    |
[INFO] [stdout] 57 |             (3 - m)
[INFO] [stdout]    |             ^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[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 `adventofcode2016`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name day05 src/bin/day05.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern arrayvec=/opt/rustwide/target/debug/deps/libarrayvec-c8a16f17831af3e7.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-a6f71b0e06fd297c.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-ea89862dc1e43cd7.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-d2872ee78d3ccd26.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-05876b33e070d8af.rmeta --extern nalgebra=/opt/rustwide/target/debug/deps/libnalgebra-d7af9c0aeaf39561.rmeta --extern nom=/opt/rustwide/target/debug/deps/libnom-c06431eb5b30b8bb.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-a19342d8e6fc817a.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-41e7579ec51a8b5f.rmeta --extern permutohedron=/opt/rustwide/target/debug/deps/libpermutohedron-cebe44f5b7aaa368.rmeta --extern crypto=/opt/rustwide/target/debug/deps/libcrypto-c68804fa5d6d6141.rmeta --extern rustc_serialize=/opt/rustwide/target/debug/deps/librustc_serialize-d096a073f603757f.rmeta --extern scan_fmt=/opt/rustwide/target/debug/deps/libscan_fmt-f4256c67ceeb75d6.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "61ef46c73b12e01d0afc69ea1251376cefc96b9ab0065d6984069463809df859", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61ef46c73b12e01d0afc69ea1251376cefc96b9ab0065d6984069463809df859", kill_on_drop: false }`
[INFO] [stdout] 61ef46c73b12e01d0afc69ea1251376cefc96b9ab0065d6984069463809df859
