[INFO] cloning repository https://github.com/mplanchard/aoc_2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mplanchard/aoc_2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmplanchard%2Faoc_2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmplanchard%2Faoc_2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4ac7268d230700a46cd60b338084f4210b54f96f
[INFO] checking mplanchard/aoc_2020 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmplanchard%2Faoc_2020" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mplanchard/aoc_2020 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mplanchard/aoc_2020
[INFO] finished tweaking git repo https://github.com/mplanchard/aoc_2020
[INFO] tweaked toml for git repo https://github.com/mplanchard/aoc_2020 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mplanchard/aoc_2020 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v0.7.15
[INFO] [stderr]   Downloaded thread_local v1.0.1
[INFO] [stderr]   Downloaded anyhow v1.0.35
[INFO] [stderr]   Downloaded memchr v2.3.4
[INFO] [stderr]   Downloaded regex v1.4.2
[INFO] [stderr]   Downloaded regex-syntax v0.6.21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89fac2eadcb84c6cb47aa759872f309d32720d35e695a1a356b246703d6c423f
[INFO] running `Command { std: "docker" "start" "-a" "89fac2eadcb84c6cb47aa759872f309d32720d35e695a1a356b246703d6c423f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89fac2eadcb84c6cb47aa759872f309d32720d35e695a1a356b246703d6c423f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89fac2eadcb84c6cb47aa759872f309d32720d35e695a1a356b246703d6c423f", kill_on_drop: false }`
[INFO] [stdout] 89fac2eadcb84c6cb47aa759872f309d32720d35e695a1a356b246703d6c423f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 73d247349e28454ea87841d9d0753254c1fe6c1baa624abc6722ab397a364fa8
[INFO] running `Command { std: "docker" "start" "-a" "73d247349e28454ea87841d9d0753254c1fe6c1baa624abc6722ab397a364fa8", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling anyhow v1.0.35
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking aoc_2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow;
[INFO] [stdout]   |     ^^^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]  --> src/day2.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use anyhow;
[INFO] [stdout]   |     ^^^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use anyhow;
[INFO] [stdout]   |     ^^^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `anyhow` is imported redundantly
[INFO] [stdout]  --> src/day2.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use anyhow;
[INFO] [stdout]   |     ^^^^^^ the item `anyhow` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `number` and `unit` are never read
[INFO] [stdout]   --> src/day4.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct Height {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 43 |     number: usize,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 44 |     unit: HeightUnit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Height` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/day4.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 88 | struct ValidPassport {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 89 |     birth_year: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 90 |     issue_year: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 91 |     expiration_year: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 92 |     height: Height,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 93 |     hair_color: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 94 |     eye_color: EyeColor,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 95 |     passport_id: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 96 |     country_id: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ValidPassport` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `number` and `unit` are never read
[INFO] [stdout]   --> src/day4.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 42 | struct Height {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 43 |     number: usize,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 44 |     unit: HeightUnit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Height` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple fields are never read
[INFO] [stdout]   --> src/day4.rs:89:5
[INFO] [stdout]    |
[INFO] [stdout] 88 | struct ValidPassport {
[INFO] [stdout]    |        ------------- fields in this struct
[INFO] [stdout] 89 |     birth_year: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 90 |     issue_year: usize,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 91 |     expiration_year: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 92 |     height: Height,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 93 |     hair_color: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 94 |     eye_color: EyeColor,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 95 |     passport_id: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 96 |     country_id: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ValidPassport` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `Command { std: "docker" "inspect" "73d247349e28454ea87841d9d0753254c1fe6c1baa624abc6722ab397a364fa8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73d247349e28454ea87841d9d0753254c1fe6c1baa624abc6722ab397a364fa8", kill_on_drop: false }`
[INFO] [stdout] 73d247349e28454ea87841d9d0753254c1fe6c1baa624abc6722ab397a364fa8