[INFO] cloning repository https://github.com/tyleo/advent_of_code_2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tyleo/advent_of_code_2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyleo%2Fadvent_of_code_2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyleo%2Fadvent_of_code_2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 24f40cd268405892ccbd67540e658ad0852285e1
[INFO] checking tyleo/advent_of_code_2020 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyleo%2Fadvent_of_code_2020" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tyleo/advent_of_code_2020 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/tyleo/advent_of_code_2020
[INFO] finished tweaking git repo https://github.com/tyleo/advent_of_code_2020
[INFO] tweaked toml for git repo https://github.com/tyleo/advent_of_code_2020 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/tyleo/advent_of_code_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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 480cb5fb1ee6287e1c81795931531d8bd5bbd9af7b91659b64bc5f76cab401fe
[INFO] running `Command { std: "docker" "start" "-a" "480cb5fb1ee6287e1c81795931531d8bd5bbd9af7b91659b64bc5f76cab401fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "480cb5fb1ee6287e1c81795931531d8bd5bbd9af7b91659b64bc5f76cab401fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "480cb5fb1ee6287e1c81795931531d8bd5bbd9af7b91659b64bc5f76cab401fe", kill_on_drop: false }`
[INFO] [stdout] 480cb5fb1ee6287e1c81795931531d8bd5bbd9af7b91659b64bc5f76cab401fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 365d5c7e8003754cd1db3222b3c8356314b250abad6a395815b36d4a37144418
[INFO] running `Command { std: "docker" "start" "-a" "365d5c7e8003754cd1db3222b3c8356314b250abad6a395815b36d4a37144418", kill_on_drop: false }`
[INFO] [stderr]     Checking advent_of_code_2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::util`
[INFO] [stdout]  --> src/problem_13_1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util`
[INFO] [stdout]  --> src/problem_13_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `regex` is imported redundantly
[INFO] [stdout]  --> src/problem_2_1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use regex;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate regex;
[INFO] [stdout]   | ------------------- the item `regex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/problem_2_1.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |         };
[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 `regex` is imported redundantly
[INFO] [stdout]  --> src/problem_2_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use regex;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate regex;
[INFO] [stdout]   | ------------------- the item `regex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/problem_2_2.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util`
[INFO] [stdout]  --> src/problem_13_1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util`
[INFO] [stdout]  --> src/problem_13_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `regex` is imported redundantly
[INFO] [stdout]  --> src/problem_2_1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use regex;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate regex;
[INFO] [stdout]   | ------------------- the item `regex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/problem_2_1.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |         };
[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 `regex` is imported redundantly
[INFO] [stdout]  --> src/problem_2_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use regex;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate regex;
[INFO] [stdout]   | ------------------- the item `regex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/problem_2_2.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bag` is never read
[INFO] [stdout]   --> src/problem_7_1.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct BagWithRules {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 15 |     bag: Bag,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BagWithRules` 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: field `bag` is never read
[INFO] [stdout]   --> src/problem_7_2.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct BagWithRules {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 15 |     bag: Bag,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BagWithRules` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bag` is never read
[INFO] [stdout]   --> src/problem_7_1.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct BagWithRules {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 15 |     bag: Bag,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BagWithRules` 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: field `bag` is never read
[INFO] [stdout]   --> src/problem_7_2.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct BagWithRules {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 15 |     bag: Bag,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BagWithRules` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "365d5c7e8003754cd1db3222b3c8356314b250abad6a395815b36d4a37144418", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "365d5c7e8003754cd1db3222b3c8356314b250abad6a395815b36d4a37144418", kill_on_drop: false }`
[INFO] [stdout] 365d5c7e8003754cd1db3222b3c8356314b250abad6a395815b36d4a37144418
[INFO] checking tyleo/advent_of_code_2020 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyleo%2Fadvent_of_code_2020" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tyleo/advent_of_code_2020 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/tyleo/advent_of_code_2020
[INFO] finished tweaking git repo https://github.com/tyleo/advent_of_code_2020
[INFO] tweaked toml for git repo https://github.com/tyleo/advent_of_code_2020 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/tyleo/advent_of_code_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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 27aab16e716f6ac0ee5bae7bd24bd5d3d6fb2cdc4bf295baecbd14b4b358cd9d
[INFO] running `Command { std: "docker" "start" "-a" "27aab16e716f6ac0ee5bae7bd24bd5d3d6fb2cdc4bf295baecbd14b4b358cd9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27aab16e716f6ac0ee5bae7bd24bd5d3d6fb2cdc4bf295baecbd14b4b358cd9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27aab16e716f6ac0ee5bae7bd24bd5d3d6fb2cdc4bf295baecbd14b4b358cd9d", kill_on_drop: false }`
[INFO] [stdout] 27aab16e716f6ac0ee5bae7bd24bd5d3d6fb2cdc4bf295baecbd14b4b358cd9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 0a16763d7a8ac88edac0bb54dc5cd00b7f75104d3b1ba8198897bbfe64ac1d4d
[INFO] running `Command { std: "docker" "start" "-a" "0a16763d7a8ac88edac0bb54dc5cd00b7f75104d3b1ba8198897bbfe64ac1d4d", kill_on_drop: false }`
[INFO] [stderr]     Checking advent_of_code_2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::util`
[INFO] [stdout]  --> src/problem_13_1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util`
[INFO] [stdout]  --> src/problem_13_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `regex` is imported redundantly
[INFO] [stdout]  --> src/problem_2_1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use regex;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate regex;
[INFO] [stdout]   | ------------------- the item `regex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/problem_2_1.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |         };
[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 `regex` is imported redundantly
[INFO] [stdout]  --> src/problem_2_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use regex;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate regex;
[INFO] [stdout]   | ------------------- the item `regex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/problem_2_2.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util`
[INFO] [stdout]  --> src/problem_13_1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::util`
[INFO] [stdout]  --> src/problem_13_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::util;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `regex` is imported redundantly
[INFO] [stdout]  --> src/problem_2_1.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use regex;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate regex;
[INFO] [stdout]   | ------------------- the item `regex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/problem_2_1.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |         };
[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 `regex` is imported redundantly
[INFO] [stdout]  --> src/problem_2_2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use regex;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | extern crate regex;
[INFO] [stdout]   | ------------------- the item `regex` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]   --> src/problem_2_2.rs:42:10
[INFO] [stdout]    |
[INFO] [stdout] 42 |         };
[INFO] [stdout]    |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bag` is never read
[INFO] [stdout]   --> src/problem_7_1.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct BagWithRules {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 15 |     bag: Bag,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BagWithRules` 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: field `bag` is never read
[INFO] [stdout]   --> src/problem_7_2.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct BagWithRules {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 15 |     bag: Bag,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BagWithRules` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `bag` is never read
[INFO] [stdout]   --> src/problem_7_1.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct BagWithRules {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 15 |     bag: Bag,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BagWithRules` 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: field `bag` is never read
[INFO] [stdout]   --> src/problem_7_2.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | struct BagWithRules {
[INFO] [stdout]    |        ------------ field in this struct
[INFO] [stdout] 15 |     bag: Bag,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `BagWithRules` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "0a16763d7a8ac88edac0bb54dc5cd00b7f75104d3b1ba8198897bbfe64ac1d4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a16763d7a8ac88edac0bb54dc5cd00b7f75104d3b1ba8198897bbfe64ac1d4d", kill_on_drop: false }`
[INFO] [stdout] 0a16763d7a8ac88edac0bb54dc5cd00b7f75104d3b1ba8198897bbfe64ac1d4d