[INFO] cloning repository https://github.com/gissleh/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gissleh/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgissleh%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgissleh%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7eb0d06caf7fcef7ec2a7a701d7600446c363fe6
[INFO] documenting gissleh/aoc2020 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%2Fgissleh%2Faoc2020" "/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/gissleh/aoc2020 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/gissleh/aoc2020
[INFO] finished tweaking git repo https://github.com/gissleh/aoc2020
[INFO] tweaked toml for git repo https://github.com/gissleh/aoc2020 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/gissleh/aoc2020 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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded smallvec v1.5.1
[INFO] [stderr]   Downloaded num-bigint v0.2.3
[INFO] [stderr]   Downloaded cc v1.0.48
[INFO] [stderr]   Downloaded num-traits v0.2.10
[INFO] [stderr]   Downloaded syn v1.0.11
[INFO] [stderr]   Downloaded termion v1.5.4
[INFO] [stderr]   Downloaded blake2b_simd v0.5.9
[INFO] [stderr]   Downloaded backtrace v0.3.40
[INFO] [stderr]   Downloaded proc-macro2 v1.0.6
[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" "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] 4a2cfdd28655a757607fced3025bccab977bc49a688ed4feb8312f934666fb09
[INFO] running `Command { std: "docker" "start" "-a" "4a2cfdd28655a757607fced3025bccab977bc49a688ed4feb8312f934666fb09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a2cfdd28655a757607fced3025bccab977bc49a688ed4feb8312f934666fb09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a2cfdd28655a757607fced3025bccab977bc49a688ed4feb8312f934666fb09", kill_on_drop: false }`
[INFO] [stdout] 4a2cfdd28655a757607fced3025bccab977bc49a688ed4feb8312f934666fb09
[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" "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] 47ff895afe2ff61f6c305ec3b577ccb948909f467e3e514163c6bec3bdc42d16
[INFO] running `Command { std: "docker" "start" "-a" "47ff895afe2ff61f6c305ec3b577ccb948909f467e3e514163c6bec3bdc42d16", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]     Checking termion v1.5.4
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking num-bigint v0.2.3
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking num v0.2.0
[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 stable release channel
[INFO] [stdout]  --> src/day21.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(is_sorted)]
[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 day21 src/day21.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern common=/opt/rustwide/target/debug/deps/libcommon-7e6e8d3367432530.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-37efac27eea9a7b3.rmeta --extern num=/opt/rustwide/target/debug/deps/libnum-6e6fb5099267a212.rmeta --extern rustc_hash=/opt/rustwide/target/debug/deps/librustc_hash-435af4ab78bf1cae.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-de7f56ab4e99a822.rmeta --extern term=/opt/rustwide/target/debug/deps/libterm-16bcd4b1c52640ce.rmeta --extern termion=/opt/rustwide/target/debug/deps/libtermion-6a306c8ff233cec6.rmeta --extern time=/opt/rustwide/target/debug/deps/libtime-3d6f1c5a2e40e4a6.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "47ff895afe2ff61f6c305ec3b577ccb948909f467e3e514163c6bec3bdc42d16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47ff895afe2ff61f6c305ec3b577ccb948909f467e3e514163c6bec3bdc42d16", kill_on_drop: false }`
[INFO] [stdout] 47ff895afe2ff61f6c305ec3b577ccb948909f467e3e514163c6bec3bdc42d16
