[INFO] cloning repository https://github.com/davidszotten/advent-of-code-2019
[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-2019" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidszotten%2Fadvent-of-code-2019", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidszotten%2Fadvent-of-code-2019'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02015e57148d1e358591d35e92579000190a62a5
[INFO] documenting davidszotten/advent-of-code-2019 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidszotten%2Fadvent-of-code-2019" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidszotten/advent-of-code-2019 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davidszotten/advent-of-code-2019
[INFO] finished tweaking git repo https://github.com/davidszotten/advent-of-code-2019
[INFO] tweaked toml for git repo https://github.com/davidszotten/advent-of-code-2019 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/davidszotten/advent-of-code-2019 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded permutohedron v0.2.4
[INFO] [stderr]   Downloaded once_cell v0.1.8
[INFO] [stderr]   Downloaded cached v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9e0bd1600684a564347f235ab4e07346872fa7051827632dd5b5070bbf9a2e42
[INFO] running `Command { std: "docker" "start" "-a" "9e0bd1600684a564347f235ab4e07346872fa7051827632dd5b5070bbf9a2e42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e0bd1600684a564347f235ab4e07346872fa7051827632dd5b5070bbf9a2e42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e0bd1600684a564347f235ab4e07346872fa7051827632dd5b5070bbf9a2e42", kill_on_drop: false }`
[INFO] [stdout] 9e0bd1600684a564347f235ab4e07346872fa7051827632dd5b5070bbf9a2e42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a7a2bd96d4196210477c37295e3f2cf706310b1da19a047e705bba68bbcbda0c
[INFO] running `Command { std: "docker" "start" "-a" "a7a2bd96d4196210477c37295e3f2cf706310b1da19a047e705bba68bbcbda0c", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking num-complex v0.2.3
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking num-bigint v0.2.3
[INFO] [stderr]     Checking once_cell v0.1.8
[INFO] [stderr]     Checking cached v0.8.1
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking num-rational v0.2.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking aoc2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting aoc2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/bin/day04.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/bin/day03.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(generators, generator_trait)]
[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 `aoc2019`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name day04 src/bin/day04.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern aoc2019=/opt/rustwide/target/debug/deps/libaoc2019-587afa445cbf0a60.rmeta --extern cached=/opt/rustwide/target/debug/deps/libcached-66bcf28670330422.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-47d2469a64e723a3.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-159496d928db0d3e.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-0543c33e1b112089.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-230a21fa80529ab5.rmeta --extern permutohedron=/opt/rustwide/target/debug/deps/libpermutohedron-0ced619323eba3ff.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-4c39fe4927c3436a.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-13b01f7cffee51ae.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] 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: build failed
[INFO] running `Command { std: "docker" "inspect" "a7a2bd96d4196210477c37295e3f2cf706310b1da19a047e705bba68bbcbda0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7a2bd96d4196210477c37295e3f2cf706310b1da19a047e705bba68bbcbda0c", kill_on_drop: false }`
[INFO] [stdout] a7a2bd96d4196210477c37295e3f2cf706310b1da19a047e705bba68bbcbda0c