[INFO] cloning repository https://github.com/locks/advent-of-code-2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/locks/advent-of-code-2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flocks%2Fadvent-of-code-2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flocks%2Fadvent-of-code-2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1ffca7d73a46afe241bcf96f7137965c024b7d31
[INFO] testing locks/advent-of-code-2021 against 1.85.0 for beta-1.86-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flocks%2Fadvent-of-code-2021" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/locks/advent-of-code-2021 on toolchain 1.85.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.85.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/locks/advent-of-code-2021
[INFO] finished tweaking git repo https://github.com/locks/advent-of-code-2021
[INFO] tweaked toml for git repo https://github.com/locks/advent-of-code-2021 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/locks/advent-of-code-2021 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" "+1.85.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0480f3a66bca40f25815738e71605d24a22db6374da25de392540571b4e948f5
[INFO] running `Command { std: "docker" "start" "-a" "0480f3a66bca40f25815738e71605d24a22db6374da25de392540571b4e948f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0480f3a66bca40f25815738e71605d24a22db6374da25de392540571b4e948f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0480f3a66bca40f25815738e71605d24a22db6374da25de392540571b4e948f5", kill_on_drop: false }`
[INFO] [stdout] 0480f3a66bca40f25815738e71605d24a22db6374da25de392540571b4e948f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a3b40e0c035620bd2763a0b6658a1f5e10ccac4d5eb5bea71e3652712a2784eb
[INFO] running `Command { std: "docker" "start" "-a" "a3b40e0c035620bd2763a0b6658a1f5e10ccac4d5eb5bea71e3652712a2784eb", kill_on_drop: false }`
[INFO] [stderr]    Compiling advent-of-code-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `process::exit`
[INFO] [stdout]  --> src/day4/mod.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt, process::exit};
[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/day6/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut seed = read_input();
[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/day6/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut seed = read_input();
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "a3b40e0c035620bd2763a0b6658a1f5e10ccac4d5eb5bea71e3652712a2784eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3b40e0c035620bd2763a0b6658a1f5e10ccac4d5eb5bea71e3652712a2784eb", kill_on_drop: false }`
[INFO] [stdout] a3b40e0c035620bd2763a0b6658a1f5e10ccac4d5eb5bea71e3652712a2784eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9ac3a208f7639ab3159da9ade33fe62746e457d0d937cc78b6d38b3ff12b2508
[INFO] running `Command { std: "docker" "start" "-a" "9ac3a208f7639ab3159da9ade33fe62746e457d0d937cc78b6d38b3ff12b2508", kill_on_drop: false }`
[INFO] [stderr]    Compiling advent-of-code-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `process::exit`
[INFO] [stdout]  --> src/day4/mod.rs:1:16
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt, process::exit};
[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/day6/mod.rs:9:9
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut seed = read_input();
[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/day6/mod.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout] 16 |     let mut seed = read_input();
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "9ac3a208f7639ab3159da9ade33fe62746e457d0d937cc78b6d38b3ff12b2508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ac3a208f7639ab3159da9ade33fe62746e457d0d937cc78b6d38b3ff12b2508", kill_on_drop: false }`
[INFO] [stdout] 9ac3a208f7639ab3159da9ade33fe62746e457d0d937cc78b6d38b3ff12b2508
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+1.85.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fd16cd1ba4495d26b3a56c342f3108701350d7f28881776bc90efb26bf29388f
[INFO] running `Command { std: "docker" "start" "-a" "fd16cd1ba4495d26b3a56c342f3108701350d7f28881776bc90efb26bf29388f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `process::exit`
[INFO] [stderr]  --> src/day4/mod.rs:1:16
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::{fmt, process::exit};
[INFO] [stderr]   |                ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/day6/mod.rs:9:9
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let mut seed = read_input();
[INFO] [stderr]   |         ----^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day6/mod.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr] 16 |     let mut seed = read_input();
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `advent-of-code-2021` (bin "advent-of-code-2021" test) generated 3 warnings (run `cargo fix --bin "advent-of-code-2021" --tests` to apply 3 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/advent_of_code_2021-183a3d42b3e564a7)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fd16cd1ba4495d26b3a56c342f3108701350d7f28881776bc90efb26bf29388f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd16cd1ba4495d26b3a56c342f3108701350d7f28881776bc90efb26bf29388f", kill_on_drop: false }`
[INFO] [stdout] fd16cd1ba4495d26b3a56c342f3108701350d7f28881776bc90efb26bf29388f