[INFO] cloning repository https://github.com/janglada/advent-of-code2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/janglada/advent-of-code2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjanglada%2Fadvent-of-code2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjanglada%2Fadvent-of-code2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6a6aac1eebc65c67ff626fa731d81f1dee00dede
[INFO] documenting janglada/advent-of-code2020 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjanglada%2Fadvent-of-code2020" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/janglada/advent-of-code2020 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/janglada/advent-of-code2020
[INFO] finished tweaking git repo https://github.com/janglada/advent-of-code2020
[INFO] tweaked toml for git repo https://github.com/janglada/advent-of-code2020 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/janglada/advent-of-code2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded grid v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 33cf02615209b3c349a8542e9eb5b10519449ffa23b774e24c1f54e6e9a29d9b
[INFO] running `Command { std: "docker" "start" "-a" "33cf02615209b3c349a8542e9eb5b10519449ffa23b774e24c1f54e6e9a29d9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33cf02615209b3c349a8542e9eb5b10519449ffa23b774e24c1f54e6e9a29d9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33cf02615209b3c349a8542e9eb5b10519449ffa23b774e24c1f54e6e9a29d9b", kill_on_drop: false }`
[INFO] [stdout] 33cf02615209b3c349a8542e9eb5b10519449ffa23b774e24c1f54e6e9a29d9b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c5af6be55d91e2cde9427503c2ea8396cd6c86b58ab0b4c065b8dfe1f5c39fd
[INFO] running `Command { std: "docker" "start" "-a" "5c5af6be55d91e2cde9427503c2ea8396cd6c86b58ab0b4c065b8dfe1f5c39fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling peg-runtime v0.6.3
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking grid v0.2.3
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling peg-macros v0.6.3
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking peg v0.6.3
[INFO] [stderr]     Checking multimap v0.8.2
[INFO] [stderr]  Documenting advent_1 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:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(array_map)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `advent_1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name advent_1 src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=a6667027d2cb095c -L dependency=/opt/rustwide/target/debug/deps --extern grid=/opt/rustwide/target/debug/deps/libgrid-2e67f1d61f8f5479.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-4786d14927215e71.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-9c7d51f549cf58b7.rmeta --extern multimap=/opt/rustwide/target/debug/deps/libmultimap-fba479b8f116b390.rmeta --extern peg=/opt/rustwide/target/debug/deps/libpeg-76cbba2be704b842.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7e9d46d1ac6dee9a.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5c5af6be55d91e2cde9427503c2ea8396cd6c86b58ab0b4c065b8dfe1f5c39fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c5af6be55d91e2cde9427503c2ea8396cd6c86b58ab0b4c065b8dfe1f5c39fd", kill_on_drop: false }`
[INFO] [stdout] 5c5af6be55d91e2cde9427503c2ea8396cd6c86b58ab0b4c065b8dfe1f5c39fd
