[INFO] cloning repository https://github.com/kjvalencik/rust-adventofcode2018
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kjvalencik/rust-adventofcode2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjvalencik%2Frust-adventofcode2018", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjvalencik%2Frust-adventofcode2018'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66874ce7d4ba095c19d79ba5e476df9cb8aa5402
[INFO] testing kjvalencik/rust-adventofcode2018 against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjvalencik%2Frust-adventofcode2018" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kjvalencik/rust-adventofcode2018 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kjvalencik/rust-adventofcode2018
[INFO] finished tweaking git repo https://github.com/kjvalencik/rust-adventofcode2018
[INFO] tweaked toml for git repo https://github.com/kjvalencik/rust-adventofcode2018 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/kjvalencik/rust-adventofcode2018 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8bcfd6b18703dae9a4246df79631ef0d6eceb134eaf646b18da8a36d291fae99
[INFO] running `Command { std: "docker" "start" "-a" "8bcfd6b18703dae9a4246df79631ef0d6eceb134eaf646b18da8a36d291fae99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8bcfd6b18703dae9a4246df79631ef0d6eceb134eaf646b18da8a36d291fae99", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8bcfd6b18703dae9a4246df79631ef0d6eceb134eaf646b18da8a36d291fae99", kill_on_drop: false }`
[INFO] [stdout] 8bcfd6b18703dae9a4246df79631ef0d6eceb134eaf646b18da8a36d291fae99
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 578c6df5f0fac6fcc06699fff69184dd5cccb12fc78d4b001783dff64fc9dd77
[INFO] running `Command { std: "docker" "start" "-a" "578c6df5f0fac6fcc06699fff69184dd5cccb12fc78d4b001783dff64fc9dd77", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling day10 v0.1.0 (/opt/rustwide/workdir/solutions/day10)
[INFO] [stderr]    Compiling day08 v0.1.0 (/opt/rustwide/workdir/solutions/day08)
[INFO] [stderr]    Compiling day07 v0.1.0 (/opt/rustwide/workdir/solutions/day07)
[INFO] [stderr]    Compiling day06 v0.1.0 (/opt/rustwide/workdir/solutions/day06)
[INFO] [stderr]    Compiling day05 v0.1.0 (/opt/rustwide/workdir/solutions/day05)
[INFO] [stderr]    Compiling day09 v0.1.0 (/opt/rustwide/workdir/solutions/day09)
[INFO] [stderr]    Compiling day03 v0.1.0 (/opt/rustwide/workdir/solutions/day03)
[INFO] [stderr]    Compiling day14 v0.1.0 (/opt/rustwide/workdir/solutions/day14)
[INFO] [stderr]    Compiling day13 v0.1.0 (/opt/rustwide/workdir/solutions/day13)
[INFO] [stderr]    Compiling day12 v0.1.0 (/opt/rustwide/workdir/solutions/day12)
[INFO] [stderr]    Compiling day01 v0.1.0 (/opt/rustwide/workdir/solutions/day01)
[INFO] [stderr]    Compiling day02 v0.1.0 (/opt/rustwide/workdir/solutions/day02)
[INFO] [stderr]    Compiling day11 v0.1.0 (/opt/rustwide/workdir/solutions/day11)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> solutions/day10/src/main.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Error = Box<std::error::Error>;
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> solutions/day12/src/main.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Error = Box<std::error::Error>;
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> solutions/day09/src/main.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | type BoxError = Box<std::error::Error>;
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> solutions/day13/src/main.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Error = Box<std::error::Error>;
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling day04 v0.1.0 (/opt/rustwide/workdir/solutions/day04)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.68s
[INFO] running `Command { std: "docker" "inspect" "578c6df5f0fac6fcc06699fff69184dd5cccb12fc78d4b001783dff64fc9dd77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "578c6df5f0fac6fcc06699fff69184dd5cccb12fc78d4b001783dff64fc9dd77", kill_on_drop: false }`
[INFO] [stdout] 578c6df5f0fac6fcc06699fff69184dd5cccb12fc78d4b001783dff64fc9dd77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 91f88cbe32e59aa0fefc32ddac16d05c770867b6412d9b4a3d3268c5bd457f3d
[INFO] running `Command { std: "docker" "start" "-a" "91f88cbe32e59aa0fefc32ddac16d05c770867b6412d9b4a3d3268c5bd457f3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling day12 v0.1.0 (/opt/rustwide/workdir/solutions/day12)
[INFO] [stderr]    Compiling day11 v0.1.0 (/opt/rustwide/workdir/solutions/day11)
[INFO] [stderr]    Compiling day06 v0.1.0 (/opt/rustwide/workdir/solutions/day06)
[INFO] [stderr]    Compiling day09 v0.1.0 (/opt/rustwide/workdir/solutions/day09)
[INFO] [stderr]    Compiling day08 v0.1.0 (/opt/rustwide/workdir/solutions/day08)
[INFO] [stderr]    Compiling day05 v0.1.0 (/opt/rustwide/workdir/solutions/day05)
[INFO] [stderr]    Compiling day14 v0.1.0 (/opt/rustwide/workdir/solutions/day14)
[INFO] [stderr]    Compiling day13 v0.1.0 (/opt/rustwide/workdir/solutions/day13)
[INFO] [stderr]    Compiling day10 v0.1.0 (/opt/rustwide/workdir/solutions/day10)
[INFO] [stderr]    Compiling day02 v0.1.0 (/opt/rustwide/workdir/solutions/day02)
[INFO] [stderr]    Compiling day07 v0.1.0 (/opt/rustwide/workdir/solutions/day07)
[INFO] [stderr]    Compiling day01 v0.1.0 (/opt/rustwide/workdir/solutions/day01)
[INFO] [stderr]    Compiling day03 v0.1.0 (/opt/rustwide/workdir/solutions/day03)
[INFO] [stderr]    Compiling day04 v0.1.0 (/opt/rustwide/workdir/solutions/day04)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> solutions/day09/src/main.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | type BoxError = Box<std::error::Error>;
[INFO] [stdout]   |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> solutions/day10/src/main.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Error = Box<std::error::Error>;
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> solutions/day12/src/main.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Error = Box<std::error::Error>;
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> solutions/day13/src/main.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | type Error = Box<std::error::Error>;
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.57s
[INFO] running `Command { std: "docker" "inspect" "91f88cbe32e59aa0fefc32ddac16d05c770867b6412d9b4a3d3268c5bd457f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91f88cbe32e59aa0fefc32ddac16d05c770867b6412d9b4a3d3268c5bd457f3d", kill_on_drop: false }`
[INFO] [stdout] 91f88cbe32e59aa0fefc32ddac16d05c770867b6412d9b4a3d3268c5bd457f3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a973f18b55f0913a05da12d639ba4ea272e179e2d79b64dd8cfae69fb016fe62
[INFO] running `Command { std: "docker" "start" "-a" "a973f18b55f0913a05da12d639ba4ea272e179e2d79b64dd8cfae69fb016fe62", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout] running 3 tests
[INFO] [stderr]  --> solutions/day13/src/main.rs:5:18
[INFO] [stdout] test tests::frequency ... ok
[INFO] [stderr]   |
[INFO] [stdout] test tests::parse ... ok
[INFO] [stderr] 5 | type Error = Box<std::error::Error>;
[INFO] [stdout] test tests::first_repeat ... ok
[INFO] [stderr]   |                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> solutions/day12/src/main.rs:5:18
[INFO] [stderr]   |
[INFO] [stderr] 5 | type Error = Box<std::error::Error>;
[INFO] [stderr]   |                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> solutions/day10/src/main.rs:4:18
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Error = Box<std::error::Error>;
[INFO] [stderr]   |                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> solutions/day09/src/main.rs:3:21
[INFO] [stderr]   |
[INFO] [stderr] 3 | type BoxError = Box<std::error::Error>;
[INFO] [stderr]   |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: `day13` (bin "day13" test) generated 1 warning
[INFO] [stderr] warning: `day12` (bin "day12" test) generated 1 warning
[INFO] [stderr] warning: `day10` (bin "day10" test) generated 1 warning
[INFO] [stderr] warning: `day09` (bin "day09" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day01-e81d656933eb8bfa)
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day02-a2cca9a4c0f3358e)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::parse ... ok
[INFO] [stdout] test tests::checksum ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day03-602dfdde00462e70)
[INFO] [stdout] test tests::matches ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day04-25dbe5f0f976f3f0)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::total_overlapped ... ok
[INFO] [stdout] test tests::non_overlapped ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::ids ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day05-7b2fa0d560679c04)
[INFO] [stdout] test tests::max_minute ... ok
[INFO] [stdout] test tests::max_frequency ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::reaction ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day06-e7509568f2f7103a)
[INFO] [stdout] test tests::improve_reaction ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::largest_area ... ok
[INFO] [stdout] test tests::close_region_size ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day07-71047de64e85e48f)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::multi_worker ... ok
[INFO] [stdout] test tests::single_order ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day08-9938a8af05fd5f5c)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::root_value ... ok
[INFO] [stdout] test tests::checksum ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day09-cb39f961b71f1ea5)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::parse ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day10-11d0d0030dd8bc1b)
[INFO] [stdout] test tests::max_score ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day11-0bce5f61eb424900)
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::graph ... ok
[INFO] [stdout] test tests::guess ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test tests::largest_power_grid ... ignored
[INFO] [stdout] test tests::total_power ... ok
[INFO] [stdout] test tests::cell ... ok
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day12-87ff6ffb7cff233e)
[INFO] [stdout] test tests::largest_power ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 5.86s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day13-36a1e7c1cda3faef)
[INFO] [stdout] test tests::count ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/day14-bc39a5c03d765b12)
[INFO] [stdout] test tests::simulate ... ok
[INFO] [stdout] test tests::collision ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::simulate_two ... ok
[INFO] [stdout] test tests::simulate ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a973f18b55f0913a05da12d639ba4ea272e179e2d79b64dd8cfae69fb016fe62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a973f18b55f0913a05da12d639ba4ea272e179e2d79b64dd8cfae69fb016fe62", kill_on_drop: false }`
[INFO] [stdout] a973f18b55f0913a05da12d639ba4ea272e179e2d79b64dd8cfae69fb016fe62