[INFO] cloning repository https://github.com/nik-johnson-net/aoc20
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nik-johnson-net/aoc20" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnik-johnson-net%2Faoc20", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnik-johnson-net%2Faoc20'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 27080638dd4c1b7a5e9730c5e5e7741a4b32e43c
[INFO] checking nik-johnson-net/aoc20 against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnik-johnson-net%2Faoc20" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nik-johnson-net/aoc20 on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nik-johnson-net/aoc20
[INFO] finished tweaking git repo https://github.com/nik-johnson-net/aoc20
[INFO] tweaked toml for git repo https://github.com/nik-johnson-net/aoc20 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/nik-johnson-net/aoc20 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ab0fccb42081525abf61aec23bcb738d493879d166a08e63e61ce59ed49fa50
[INFO] running `Command { std: "docker" "start" "-a" "9ab0fccb42081525abf61aec23bcb738d493879d166a08e63e61ce59ed49fa50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ab0fccb42081525abf61aec23bcb738d493879d166a08e63e61ce59ed49fa50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ab0fccb42081525abf61aec23bcb738d493879d166a08e63e61ce59ed49fa50", kill_on_drop: false }`
[INFO] [stdout] 9ab0fccb42081525abf61aec23bcb738d493879d166a08e63e61ce59ed49fa50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bdd358a4abfb31f9b2fe73c3fc4599d765b447115a1cd3aab370f6cd25b8a17
[INFO] running `Command { std: "docker" "start" "-a" "1bdd358a4abfb31f9b2fe73c3fc4599d765b447115a1cd3aab370f6cd25b8a17", kill_on_drop: false }`
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]     Checking aoc20-01-2 v0.1.0 (/opt/rustwide/workdir/aoc20-01-2)
[INFO] [stderr]     Checking aoc20-02-1 v0.1.0 (/opt/rustwide/workdir/aoc20-02-1)
[INFO] [stderr]     Checking aoc20-03-1 v0.1.0 (/opt/rustwide/workdir/aoc20-03-1)
[INFO] [stderr]     Checking aoc20-01-1 v0.1.0 (/opt/rustwide/workdir/aoc20-01-1)
[INFO] [stderr]     Checking aoc20-04-1 v0.1.0 (/opt/rustwide/workdir/aoc20-04-1)
[INFO] [stdout] warning: field is never read: `cid`
[INFO] [stdout]   --> aoc20-04-1/src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     cid: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `cid`
[INFO] [stdout]   --> aoc20-04-1/src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     cid: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "1bdd358a4abfb31f9b2fe73c3fc4599d765b447115a1cd3aab370f6cd25b8a17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bdd358a4abfb31f9b2fe73c3fc4599d765b447115a1cd3aab370f6cd25b8a17", kill_on_drop: false }`
[INFO] [stdout] 1bdd358a4abfb31f9b2fe73c3fc4599d765b447115a1cd3aab370f6cd25b8a17