[INFO] cloning repository https://github.com/Quantum-Desmond/Advent-of-Code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Quantum-Desmond/Advent-of-Code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuantum-Desmond%2FAdvent-of-Code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuantum-Desmond%2FAdvent-of-Code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 60073ca430a00a1cec9408d0ec036c44da3b4e57
[INFO] checking Quantum-Desmond/Advent-of-Code against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuantum-Desmond%2FAdvent-of-Code" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Quantum-Desmond/Advent-of-Code on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Quantum-Desmond/Advent-of-Code
[INFO] finished tweaking git repo https://github.com/Quantum-Desmond/Advent-of-Code
[INFO] tweaked toml for git repo https://github.com/Quantum-Desmond/Advent-of-Code written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Quantum-Desmond/Advent-of-Code 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools v0.8.1
[INFO] [stderr]   Downloaded num-traits v0.2.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 887c6ee6b3d11a7e6ba9dc07c068b974879877f09dfb18ed279095dc6b292294
[INFO] running `Command { std: "docker" "start" "-a" "887c6ee6b3d11a7e6ba9dc07c068b974879877f09dfb18ed279095dc6b292294", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "887c6ee6b3d11a7e6ba9dc07c068b974879877f09dfb18ed279095dc6b292294", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "887c6ee6b3d11a7e6ba9dc07c068b974879877f09dfb18ed279095dc6b292294", kill_on_drop: false }`
[INFO] [stdout] 887c6ee6b3d11a7e6ba9dc07c068b974879877f09dfb18ed279095dc6b292294
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c035ba14a3ffca46fddfd544cc1515c0ad32372cb24e75461255406a9323855
[INFO] running `Command { std: "docker" "start" "-a" "5c035ba14a3ffca46fddfd544cc1515c0ad32372cb24e75461255406a9323855", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking itertools v0.8.1
[INFO] [stderr]    Compiling num-traits v0.2.9
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking aoc_2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BTreeMap`, `BTreeSet`, `BinaryHeap`, `HashMap`, `HashSet`
[INFO] [stdout]   --> src/aoc_problems/day_23.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::collections::{BinaryHeap, BTreeMap, BTreeSet, HashMap, HashSet};
[INFO] [stdout]    |                        ^^^^^^^^^^  ^^^^^^^^  ^^^^^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]   --> src/aoc_problems/day_03.rs:10:34
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::collections::{BTreeMap, HashSet, HashMap};
[INFO] [stdout]    |                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BTreeMap`, `BTreeSet`, `BinaryHeap`, `HashMap`, `HashSet`
[INFO] [stdout]   --> src/aoc_problems/day_23.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::collections::{BinaryHeap, BTreeMap, BTreeSet, HashMap, HashSet};
[INFO] [stdout]    |                        ^^^^^^^^^^  ^^^^^^^^  ^^^^^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]   --> src/aoc_problems/day_03.rs:10:34
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::collections::{BTreeMap, HashSet, HashMap};
[INFO] [stdout]    |                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.15s
[INFO] running `Command { std: "docker" "inspect" "5c035ba14a3ffca46fddfd544cc1515c0ad32372cb24e75461255406a9323855", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c035ba14a3ffca46fddfd544cc1515c0ad32372cb24e75461255406a9323855", kill_on_drop: false }`
[INFO] [stdout] 5c035ba14a3ffca46fddfd544cc1515c0ad32372cb24e75461255406a9323855
[INFO] checking Quantum-Desmond/Advent-of-Code against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FQuantum-Desmond%2FAdvent-of-Code" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Quantum-Desmond/Advent-of-Code on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Quantum-Desmond/Advent-of-Code
[INFO] finished tweaking git repo https://github.com/Quantum-Desmond/Advent-of-Code
[INFO] tweaked toml for git repo https://github.com/Quantum-Desmond/Advent-of-Code written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Quantum-Desmond/Advent-of-Code 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 674d899e2db890d254606baafdc5f563e9bc5db57347fe0263c3875ce3458b99
[INFO] running `Command { std: "docker" "start" "-a" "674d899e2db890d254606baafdc5f563e9bc5db57347fe0263c3875ce3458b99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "674d899e2db890d254606baafdc5f563e9bc5db57347fe0263c3875ce3458b99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "674d899e2db890d254606baafdc5f563e9bc5db57347fe0263c3875ce3458b99", kill_on_drop: false }`
[INFO] [stdout] 674d899e2db890d254606baafdc5f563e9bc5db57347fe0263c3875ce3458b99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 21edb22c7f540a9a7254e59957c2f180a6954062f0ac10d913515116c5867efc
[INFO] running `Command { std: "docker" "start" "-a" "21edb22c7f540a9a7254e59957c2f180a6954062f0ac10d913515116c5867efc", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.12
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking itertools v0.8.1
[INFO] [stderr]    Compiling num-traits v0.2.9
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking regex v1.3.1
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking aoc_2018 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BTreeMap`, `BTreeSet`, `BinaryHeap`, `HashMap`, `HashSet`
[INFO] [stdout]   --> src/aoc_problems/day_23.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::collections::{BinaryHeap, BTreeMap, BTreeSet, HashMap, HashSet};
[INFO] [stdout]    |                        ^^^^^^^^^^  ^^^^^^^^  ^^^^^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]   --> src/aoc_problems/day_03.rs:10:34
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::collections::{BTreeMap, HashSet, HashMap};
[INFO] [stdout]    |                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BTreeMap`, `BTreeSet`, `BinaryHeap`, `HashMap`, `HashSet`
[INFO] [stdout]   --> src/aoc_problems/day_23.rs:12:24
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::collections::{BinaryHeap, BTreeMap, BTreeSet, HashMap, HashSet};
[INFO] [stdout]    |                        ^^^^^^^^^^  ^^^^^^^^  ^^^^^^^^  ^^^^^^^  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HashSet`
[INFO] [stdout]   --> src/aoc_problems/day_03.rs:10:34
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::collections::{BTreeMap, HashSet, HashMap};
[INFO] [stdout]    |                                  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.37s
[INFO] running `Command { std: "docker" "inspect" "21edb22c7f540a9a7254e59957c2f180a6954062f0ac10d913515116c5867efc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21edb22c7f540a9a7254e59957c2f180a6954062f0ac10d913515116c5867efc", kill_on_drop: false }`
[INFO] [stdout] 21edb22c7f540a9a7254e59957c2f180a6954062f0ac10d913515116c5867efc