[INFO] cloning repository https://github.com/cassava/aoc20.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cassava/aoc20.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcassava%2Faoc20.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcassava%2Faoc20.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da722ecc61773909e008ae3fc156c39504ea509d
[INFO] checking cassava/aoc20.rs against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcassava%2Faoc20.rs" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cassava/aoc20.rs 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/cassava/aoc20.rs
[INFO] finished tweaking git repo https://github.com/cassava/aoc20.rs
[INFO] tweaked toml for git repo https://github.com/cassava/aoc20.rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cassava/aoc20.rs 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] ad6d4b0f70dcaab8f104be01e746a305e5372848e4088f92c22c62b47d9fd864
[INFO] running `Command { std: "docker" "start" "-a" "ad6d4b0f70dcaab8f104be01e746a305e5372848e4088f92c22c62b47d9fd864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad6d4b0f70dcaab8f104be01e746a305e5372848e4088f92c22c62b47d9fd864", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad6d4b0f70dcaab8f104be01e746a305e5372848e4088f92c22c62b47d9fd864", kill_on_drop: false }`
[INFO] [stdout] ad6d4b0f70dcaab8f104be01e746a305e5372848e4088f92c22c62b47d9fd864
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 454822ffe70d09f7a0ed21e6d6ddd676b1fac5a1366d96d108d2a1ebfd93c996
[INFO] running `Command { std: "docker" "start" "-a" "454822ffe70d09f7a0ed21e6d6ddd676b1fac5a1366d96d108d2a1ebfd93c996", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking aoc20 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `aoc20` is imported redundantly
[INFO] [stdout]   --> src/bin/01_report.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | use aoc20;
[INFO] [stdout]    |     ^^^^^ the item `aoc20` 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 `aoc20` is imported redundantly
[INFO] [stdout]   --> src/bin/05_boarding.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 | use aoc20;
[INFO] [stdout]    |     ^^^^^ the item `aoc20` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/bin/05_boarding.rs:154:10
[INFO] [stdout]     |
[INFO] [stdout] 154 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `aoc20` is imported redundantly
[INFO] [stdout]   --> src/bin/03_trajectory.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 | use aoc20;
[INFO] [stdout]    |     ^^^^^ the item `aoc20` 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 `aoc20` is imported redundantly
[INFO] [stdout]   --> src/bin/05_boarding.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 73 | use aoc20;
[INFO] [stdout]    |     ^^^^^ the item `aoc20` 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 `aoc20` is imported redundantly
[INFO] [stdout]   --> src/bin/07_handy.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 | use aoc20;
[INFO] [stdout]    |     ^^^^^ the item `aoc20` 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 `aoc20` is imported redundantly
[INFO] [stdout]    --> src/bin/06_customs.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 | use aoc20;
[INFO] [stdout]     |     ^^^^^ the item `aoc20` 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 `aoc20` is imported redundantly
[INFO] [stdout]   --> src/bin/02_passwords.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 | use aoc20;
[INFO] [stdout]    |     ^^^^^ the item `aoc20` 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 `aoc20` is imported redundantly
[INFO] [stdout]   --> src/bin/03_trajectory.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 | use aoc20;
[INFO] [stdout]    |     ^^^^^ the item `aoc20` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `aoc20` is imported redundantly
[INFO] [stdout]   --> src/bin/01_report.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | use aoc20;
[INFO] [stdout]    |     ^^^^^ the item `aoc20` 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 `aoc20` is imported redundantly
[INFO] [stdout]   --> src/bin/02_passwords.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 | use aoc20;
[INFO] [stdout]    |     ^^^^^ the item `aoc20` 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 `aoc20` is imported redundantly
[INFO] [stdout]    --> src/bin/04_passport.rs:143:5
[INFO] [stdout]     |
[INFO] [stdout] 143 | use aoc20;
[INFO] [stdout]     |     ^^^^^ the item `aoc20` 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 `aoc20` is imported redundantly
[INFO] [stdout]    --> src/bin/06_customs.rs:104:5
[INFO] [stdout]     |
[INFO] [stdout] 104 | use aoc20;
[INFO] [stdout]     |     ^^^^^ the item `aoc20` 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 `aoc20` is imported redundantly
[INFO] [stdout]    --> src/bin/04_passport.rs:143:5
[INFO] [stdout]     |
[INFO] [stdout] 143 | use aoc20;
[INFO] [stdout]     |     ^^^^^ the item `aoc20` is already defined by prelude
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `aoc20` is imported redundantly
[INFO] [stdout]   --> src/bin/07_handy.rs:85:5
[INFO] [stdout]    |
[INFO] [stdout] 85 | use aoc20;
[INFO] [stdout]    |     ^^^^^ the item `aoc20` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rules` is never read
[INFO] [stdout]    --> src/bin/07_handy.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | pub struct RuleSet {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 116 |     rules: Vec<Rule>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RuleSet` 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rules` is never read
[INFO] [stdout]    --> src/bin/07_handy.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | pub struct RuleSet {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 116 |     rules: Vec<Rule>,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RuleSet` 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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.37s
[INFO] running `Command { std: "docker" "inspect" "454822ffe70d09f7a0ed21e6d6ddd676b1fac5a1366d96d108d2a1ebfd93c996", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "454822ffe70d09f7a0ed21e6d6ddd676b1fac5a1366d96d108d2a1ebfd93c996", kill_on_drop: false }`
[INFO] [stdout] 454822ffe70d09f7a0ed21e6d6ddd676b1fac5a1366d96d108d2a1ebfd93c996