[INFO] cloning repository https://github.com/halninethousand/aoc2017
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/halninethousand/aoc2017" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhalninethousand%2Faoc2017", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhalninethousand%2Faoc2017'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ddade082f650cbb2b56cb3c7771d881bde95041
[INFO] checking halninethousand/aoc2017 against master#cb40c25f6aebb637163d26bf76a680ed6e5d1eda for pr-156157-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhalninethousand%2Faoc2017" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/halninethousand/aoc2017
[INFO] finished tweaking git repo https://github.com/halninethousand/aoc2017
[INFO] tweaked toml for git repo https://github.com/halninethousand/aoc2017 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/halninethousand/aoc2017 on toolchain cb40c25f6aebb637163d26bf76a680ed6e5d1eda
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/halninethousand/aoc2017 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" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools v0.13.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b8966bdaf5502adffb76b07f7f75be3f5e17bfaf1d7393d15062092ed1d34b27
[INFO] running `Command { std: "docker" "start" "-a" "b8966bdaf5502adffb76b07f7f75be3f5e17bfaf1d7393d15062092ed1d34b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b8966bdaf5502adffb76b07f7f75be3f5e17bfaf1d7393d15062092ed1d34b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8966bdaf5502adffb76b07f7f75be3f5e17bfaf1d7393d15062092ed1d34b27", kill_on_drop: false }`
[INFO] [stdout] b8966bdaf5502adffb76b07f7f75be3f5e17bfaf1d7393d15062092ed1d34b27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+cb40c25f6aebb637163d26bf76a680ed6e5d1eda" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 37e0aa4b8e3a18dca4c1c617f0b9392597944bf9bd7ee691f8c7c9adbd16f489
[INFO] running `Command { std: "docker" "start" "-a" "37e0aa4b8e3a18dca4c1c617f0b9392597944bf9bd7ee691f8c7c9adbd16f489", kill_on_drop: false }`
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking itertools v0.13.0
[INFO] [stderr]     Checking aoc2017 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `sum` is never read
[INFO] [stdout]   --> src/bin/day1.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |             sum += input[i]; 
[INFO] [stdout]    |             --------------- `sum` is overwritten here before the previous value is read
[INFO] [stdout] ...
[INFO] [stdout] 18 |     sum = 0;
[INFO] [stdout]    |     ^^^^^^^ this value is reassigned later and never used
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sum` is never read
[INFO] [stdout]   --> src/bin/day1.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |             sum += input[i]; 
[INFO] [stdout]    |             --------------- `sum` is overwritten here before the previous value is read
[INFO] [stdout] ...
[INFO] [stdout] 18 |     sum = 0;
[INFO] [stdout]    |     ^^^^^^^ this value is reassigned later and never used
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.29s
[INFO] running `Command { std: "docker" "inspect" "37e0aa4b8e3a18dca4c1c617f0b9392597944bf9bd7ee691f8c7c9adbd16f489", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37e0aa4b8e3a18dca4c1c617f0b9392597944bf9bd7ee691f8c7c9adbd16f489", kill_on_drop: false }`
[INFO] [stdout] 37e0aa4b8e3a18dca4c1c617f0b9392597944bf9bd7ee691f8c7c9adbd16f489
