[INFO] cloning repository https://github.com/varunmehrishi/AdventOfCode2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/varunmehrishi/AdventOfCode2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarunmehrishi%2FAdventOfCode2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarunmehrishi%2FAdventOfCode2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dc4f98e752b7b877a1189039b77bdaf1e1d881fb
[INFO] checking varunmehrishi/AdventOfCode2021 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarunmehrishi%2FAdventOfCode2021" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/varunmehrishi/AdventOfCode2021
[INFO] finished tweaking git repo https://github.com/varunmehrishi/AdventOfCode2021
[INFO] tweaked toml for git repo https://github.com/varunmehrishi/AdventOfCode2021 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/varunmehrishi/AdventOfCode2021 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/varunmehrishi/AdventOfCode2021 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e63985d367ab0285e7bd48678697b3d6bc87799c42221fc9c8ea0b2f370dadb
[INFO] running `Command { std: "docker" "start" "-a" "3e63985d367ab0285e7bd48678697b3d6bc87799c42221fc9c8ea0b2f370dadb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e63985d367ab0285e7bd48678697b3d6bc87799c42221fc9c8ea0b2f370dadb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e63985d367ab0285e7bd48678697b3d6bc87799c42221fc9c8ea0b2f370dadb", kill_on_drop: false }`
[INFO] [stdout] 3e63985d367ab0285e7bd48678697b3d6bc87799c42221fc9c8ea0b2f370dadb
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76c4a324d5edb42c1ef68b249cdf4663451a4bc11616506add86b866f7d5eae4
[INFO] running `Command { std: "docker" "start" "-a" "76c4a324d5edb42c1ef68b249cdf4663451a4bc11616506add86b866f7d5eae4", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking aoc_2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `map_first_last` has been stable since 1.66.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `map_first_last` has been stable since 1.66.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(map_first_last)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.55s
[INFO] running `Command { std: "docker" "inspect" "76c4a324d5edb42c1ef68b249cdf4663451a4bc11616506add86b866f7d5eae4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76c4a324d5edb42c1ef68b249cdf4663451a4bc11616506add86b866f7d5eae4", kill_on_drop: false }`
[INFO] [stdout] 76c4a324d5edb42c1ef68b249cdf4663451a4bc11616506add86b866f7d5eae4