[INFO] cloning repository https://github.com/ivardb/AdventOfCode2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ivardb/AdventOfCode2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivardb%2FAdventOfCode2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivardb%2FAdventOfCode2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0ba07af90afca60b7a62def23a0eec67e001f2ca
[INFO] checking ivardb/AdventOfCode2020 against 5c543b0b8c73c7b72bc8284ced4fb22ead15734d for pr-160186
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivardb%2FAdventOfCode2020" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ivardb/AdventOfCode2020
[INFO] finished tweaking git repo https://github.com/ivardb/AdventOfCode2020
[INFO] tweaked toml for git repo https://github.com/ivardb/AdventOfCode2020 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ivardb/AdventOfCode2020 on toolchain 5c543b0b8c73c7b72bc8284ced4fb22ead15734d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ivardb/AdventOfCode2020 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" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded coord_2d v0.2.22
[INFO] [stderr]   Downloaded direction v0.17.10
[INFO] [stderr]   Downloaded grid v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 0caeae9788d59fe1c1f30eebcbf33a42993a56729aa3619bfe27ec0ca7a6a990
[INFO] running `Command { std: "docker" "start" "0caeae9788d59fe1c1f30eebcbf33a42993a56729aa3619bfe27ec0ca7a6a990", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0caeae9788d59fe1c1f30eebcbf33a42993a56729aa3619bfe27ec0ca7a6a990", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "0caeae9788d59fe1c1f30eebcbf33a42993a56729aa3619bfe27ec0ca7a6a990" "/opt/rustwide/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0caeae9788d59fe1c1f30eebcbf33a42993a56729aa3619bfe27ec0ca7a6a990", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "0caeae9788d59fe1c1f30eebcbf33a42993a56729aa3619bfe27ec0ca7a6a990" "/opt/rustwide/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex-syntax v0.6.21
[INFO] [stderr]     Checking coord_2d v0.2.22
[INFO] [stderr]     Checking grid v0.2.3
[INFO] [stderr]     Checking direction v0.17.10
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking aho-corasick v0.7.15
[INFO] [stderr]     Checking bstr v0.2.14
[INFO] [stderr]     Checking csv v1.1.5
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Checking aoc2020 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `tests`
[INFO] [stdout]   --> src/days/day16/part1.rs:21:7
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[cfg(tests)]
[INFO] [stdout]    |       ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tests)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tests)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `tests`
[INFO] [stdout]   --> src/days/day16/part2.rs:58:7
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[cfg(tests)]
[INFO] [stdout]    |       ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tests)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tests)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `tests`
[INFO] [stdout]   --> src/days/day17/part1.rs:36:7
[INFO] [stdout]    |
[INFO] [stdout] 36 | #[cfg(tests)]
[INFO] [stdout]    |       ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tests)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tests)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `tests`
[INFO] [stdout]   --> src/days/day17/part2.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 | #[cfg(tests)]
[INFO] [stdout]    |       ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tests)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tests)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `tests`
[INFO] [stdout]   --> src/days/day16/part1.rs:21:7
[INFO] [stdout]    |
[INFO] [stdout] 21 | #[cfg(tests)]
[INFO] [stdout]    |       ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tests)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tests)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `tests`
[INFO] [stdout]   --> src/days/day16/part2.rs:58:7
[INFO] [stdout]    |
[INFO] [stdout] 58 | #[cfg(tests)]
[INFO] [stdout]    |       ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tests)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tests)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `tests`
[INFO] [stdout]   --> src/days/day17/part1.rs:36:7
[INFO] [stdout]    |
[INFO] [stdout] 36 | #[cfg(tests)]
[INFO] [stdout]    |       ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tests)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tests)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `tests`
[INFO] [stdout]   --> src/days/day17/part2.rs:44:7
[INFO] [stdout]    |
[INFO] [stdout] 44 | #[cfg(tests)]
[INFO] [stdout]    |       ^^^^^ help: there is a config with a similar name: `test`
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider using a Cargo feature instead
[INFO] [stdout]    = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]             [lints.rust]
[INFO] [stdout]             unexpected_cfgs = { level = "warn", check-cfg = ['cfg(tests)'] }
[INFO] [stdout]    = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(tests)");` to the top of the `build.rs`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl i64>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]   --> src/days/day9/part2.rs:22:32
[INFO] [stdout]    |
[INFO] [stdout] 22 |             let mut min = i64::max_value();
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl i64>::min_value`: replaced by the `MIN` associated constant on this type
[INFO] [stdout]   --> src/days/day9/part2.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let mut max = i64::min_value();
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl i32>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]   --> src/days/day13/part1.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut min = i32::max_value();
[INFO] [stdout]    |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl i64>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]   --> src/days/day9/part2.rs:22:32
[INFO] [stdout]    |
[INFO] [stdout] 22 |             let mut min = i64::max_value();
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl i64>::min_value`: replaced by the `MIN` associated constant on this type
[INFO] [stdout]   --> src/days/day9/part2.rs:23:32
[INFO] [stdout]    |
[INFO] [stdout] 23 |             let mut max = i64::min_value();
[INFO] [stdout]    |                                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::num::<impl i32>::max_value`: replaced by the `MAX` associated constant on this type
[INFO] [stdout]   --> src/days/day13/part1.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut min = i32::max_value();
[INFO] [stdout]    |                        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day16/part2.rs:38:39
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 match_rule = Some(rule.clone());
[INFO] [stdout]    |                                       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&String` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day21/part2.rs:32:39
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 match_rule = Some(rule.clone());
[INFO] [stdout]    |                                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&&String` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day21/part2.rs:46:35
[INFO] [stdout]    |
[INFO] [stdout] 46 |         .sorted_by_key(|(k, _v)| k.clone())
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part1.rs:23:46
[INFO] [stdout]    |
[INFO] [stdout] 23 | ...   let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr)...
[INFO] [stdout]    |                                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part1.rs:23:96
[INFO] [stdout]    |
[INFO] [stdout] 23 | ...   let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr)...
[INFO] [stdout]    |                                                                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part1.rs:23:164
[INFO] [stdout]    |
[INFO] [stdout] 23 | ..., nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()];
[INFO] [stdout]    |                                                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part1.rs:43:47
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut nxt_node = nxt.get(node1).unwrap().clone();
[INFO] [stdout]    |                                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part1.rs:47:46
[INFO] [stdout]    |
[INFO] [stdout] 47 |         nxt_node = nxt.get(nxt_node).unwrap().clone();
[INFO] [stdout]    |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:26:46
[INFO] [stdout]    |
[INFO] [stdout] 26 | ...   let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr)...
[INFO] [stdout]    |                                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:26:96
[INFO] [stdout]    |
[INFO] [stdout] 26 | ...   let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr)...
[INFO] [stdout]    |                                                                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:26:164
[INFO] [stdout]    |
[INFO] [stdout] 26 | ..., nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()];
[INFO] [stdout]    |                                                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:38:46
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let dest = lookup.get(&dest).unwrap().clone();
[INFO] [stdout]    |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:43:40
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let node1 = lookup.get(&1).unwrap().clone();
[INFO] [stdout]    |                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:44:43
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let nxt_node = nxt.get(node1).unwrap().clone();
[INFO] [stdout]    |                                           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:45:50
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let nxt_nxt_node = nxt.get(nxt_node).unwrap().clone();
[INFO] [stdout]    |                                                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&String` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day16/part2.rs:38:39
[INFO] [stdout]    |
[INFO] [stdout] 38 |                 match_rule = Some(rule.clone());
[INFO] [stdout]    |                                       ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&String` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day21/part2.rs:32:39
[INFO] [stdout]    |
[INFO] [stdout] 32 |                 match_rule = Some(rule.clone());
[INFO] [stdout]    |                                       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&&&String` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day21/part2.rs:46:35
[INFO] [stdout]    |
[INFO] [stdout] 46 |         .sorted_by_key(|(k, _v)| k.clone())
[INFO] [stdout]    |                                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part1.rs:23:46
[INFO] [stdout]    |
[INFO] [stdout] 23 | ...   let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr)...
[INFO] [stdout]    |                                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part1.rs:23:96
[INFO] [stdout]    |
[INFO] [stdout] 23 | ...   let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr)...
[INFO] [stdout]    |                                                                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part1.rs:23:164
[INFO] [stdout]    |
[INFO] [stdout] 23 | ..., nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()];
[INFO] [stdout]    |                                                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part1.rs:43:47
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let mut nxt_node = nxt.get(node1).unwrap().clone();
[INFO] [stdout]    |                                               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part1.rs:47:46
[INFO] [stdout]    |
[INFO] [stdout] 47 |         nxt_node = nxt.get(nxt_node).unwrap().clone();
[INFO] [stdout]    |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:26:46
[INFO] [stdout]    |
[INFO] [stdout] 26 | ...   let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr)...
[INFO] [stdout]    |                                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:26:96
[INFO] [stdout]    |
[INFO] [stdout] 26 | ...   let removed = [nxt.get(curr).unwrap().clone(), nxt.get(nxt.get(curr).unwrap()).unwrap().clone(), nxt.get(nxt.get(nxt.get(curr)...
[INFO] [stdout]    |                                                                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:26:164
[INFO] [stdout]    |
[INFO] [stdout] 26 | ..., nxt.get(nxt.get(nxt.get(curr).unwrap()).unwrap()).unwrap().clone()];
[INFO] [stdout]    |                                                                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:38:46
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let dest = lookup.get(&dest).unwrap().clone();
[INFO] [stdout]    |                                              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:43:40
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let node1 = lookup.get(&1).unwrap().clone();
[INFO] [stdout]    |                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:44:43
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let nxt_node = nxt.get(node1).unwrap().clone();
[INFO] [stdout]    |                                           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Node<i64>` instead of cloning the inner type
[INFO] [stdout]   --> src/days/day23/part2.rs:45:50
[INFO] [stdout]    |
[INFO] [stdout] 45 |     let nxt_nxt_node = nxt.get(nxt_node).unwrap().clone();
[INFO] [stdout]    |                                                  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.50s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: criterion v0.3.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 12`
[INFO] running `Command { std: "docker" "inspect" "0caeae9788d59fe1c1f30eebcbf33a42993a56729aa3619bfe27ec0ca7a6a990", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0caeae9788d59fe1c1f30eebcbf33a42993a56729aa3619bfe27ec0ca7a6a990", kill_on_drop: false }`
[INFO] [stdout] 0caeae9788d59fe1c1f30eebcbf33a42993a56729aa3619bfe27ec0ca7a6a990
