[INFO] cloning repository https://github.com/gnuvince/aoc2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gnuvince/aoc2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgnuvince%2Faoc2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgnuvince%2Faoc2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9c3178e2fc34b5554c64b9b1af9e0fce65290ee7
[INFO] checking gnuvince/aoc2020 against master#f8c27dfe1a2e7fb538fd91dad53de06992c7c967 for pr-138915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgnuvince%2Faoc2020" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gnuvince/aoc2020 on toolchain f8c27dfe1a2e7fb538fd91dad53de06992c7c967
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f8c27dfe1a2e7fb538fd91dad53de06992c7c967" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gnuvince/aoc2020
[INFO] finished tweaking git repo https://github.com/gnuvince/aoc2020
[INFO] tweaked toml for git repo https://github.com/gnuvince/aoc2020 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/gnuvince/aoc2020 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" "+f8c27dfe1a2e7fb538fd91dad53de06992c7c967" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+f8c27dfe1a2e7fb538fd91dad53de06992c7c967" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 999f282bf1ee92a7d3c016dab7a7b96a881b971940c8c9b24365744dff5dc34a
[INFO] running `Command { std: "docker" "start" "-a" "999f282bf1ee92a7d3c016dab7a7b96a881b971940c8c9b24365744dff5dc34a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "999f282bf1ee92a7d3c016dab7a7b96a881b971940c8c9b24365744dff5dc34a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "999f282bf1ee92a7d3c016dab7a7b96a881b971940c8c9b24365744dff5dc34a", kill_on_drop: false }`
[INFO] [stdout] 999f282bf1ee92a7d3c016dab7a7b96a881b971940c8c9b24365744dff5dc34a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4b26683ee3c49f365255c425c23003cbf4366de097804722c29c5bbbee3624d2" "/opt/rustwide/cargo-home/bin/cargo" "+f8c27dfe1a2e7fb538fd91dad53de06992c7c967" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd51665b9e6fca8f409964f4d004e88d1f073b594170789a222e4419edabce20
[INFO] running `Command { std: "docker" "start" "-a" "fd51665b9e6fca8f409964f4d004e88d1f073b594170789a222e4419edabce20", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling anyhow v1.0.35
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rules`
[INFO] [stdout]   --> src/day19.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let rules = parse(&parts[0])?;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_rules`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day19.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut matching: usize = 0;
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rules`
[INFO] [stdout]   --> src/day19.rs:71:9
[INFO] [stdout]    |
[INFO] [stdout] 71 |     let rules = parse(&parts[0])?;
[INFO] [stdout]    |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_rules`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day19.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |     let mut matching: usize = 0;
[INFO] [stdout]    |         ----^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.39s
[INFO] running `Command { std: "docker" "inspect" "fd51665b9e6fca8f409964f4d004e88d1f073b594170789a222e4419edabce20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd51665b9e6fca8f409964f4d004e88d1f073b594170789a222e4419edabce20", kill_on_drop: false }`
[INFO] [stdout] fd51665b9e6fca8f409964f4d004e88d1f073b594170789a222e4419edabce20