[INFO] cloning repository https://github.com/ztmark/aoc2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ztmark/aoc2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fztmark%2Faoc2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fztmark%2Faoc2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7d1941056a07091a3f7187fa9ddf7c207d7e339a
[INFO] checking ztmark/aoc2018 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fztmark%2Faoc2018" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ztmark/aoc2018 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ztmark/aoc2018
[INFO] finished tweaking git repo https://github.com/ztmark/aoc2018
[INFO] tweaked toml for git repo https://github.com/ztmark/aoc2018 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ztmark/aoc2018 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d629cae5c36c7545f702472a1bae5452ab54f3e6aed69f198fea9946fa1114ce
[INFO] running `Command { std: "docker" "start" "-a" "d629cae5c36c7545f702472a1bae5452ab54f3e6aed69f198fea9946fa1114ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d629cae5c36c7545f702472a1bae5452ab54f3e6aed69f198fea9946fa1114ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d629cae5c36c7545f702472a1bae5452ab54f3e6aed69f198fea9946fa1114ce", kill_on_drop: false }`
[INFO] [stdout] d629cae5c36c7545f702472a1bae5452ab54f3e6aed69f198fea9946fa1114ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8ff8f884c4685fd461ac506193339ce762e59f754ab03fc1a56c7fba3afa408
[INFO] running `Command { std: "docker" "start" "-a" "d8ff8f884c4685fd461ac506193339ce762e59f754ab03fc1a56c7fba3afa408", kill_on_drop: false }`
[INFO] [stderr]     Checking aoc2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `SeekFrom`, `Seek`
[INFO] [stdout]  --> src/day1/main.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, BufReader, Seek, SeekFrom, Read};
[INFO] [stdout]   |                                   ^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day1/main.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut reader = BufReader::new(f);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/day1/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let mut reader = BufReader::new(f);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calc`
[INFO] [stdout]   --> src/day1/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn calc() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `SeekFrom`, `Seek`
[INFO] [stdout]  --> src/day1/main.rs:3:35
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{BufRead, BufReader, Seek, SeekFrom, Read};
[INFO] [stdout]   |                                   ^^^^  ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/day1/main.rs:12:13
[INFO] [stdout]    |
[INFO] [stdout] 12 |         let mut reader = BufReader::new(f);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/day1/main.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let mut reader = BufReader::new(f);
[INFO] [stdout]    |             ----^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `calc`
[INFO] [stdout]   --> src/day1/main.rs:26:4
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn calc() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "d8ff8f884c4685fd461ac506193339ce762e59f754ab03fc1a56c7fba3afa408", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8ff8f884c4685fd461ac506193339ce762e59f754ab03fc1a56c7fba3afa408", kill_on_drop: false }`
[INFO] [stdout] d8ff8f884c4685fd461ac506193339ce762e59f754ab03fc1a56c7fba3afa408