[INFO] cloning repository https://github.com/garretpremo/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/garretpremo/advent-of-code-2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarretpremo%2Fadvent-of-code-2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarretpremo%2Fadvent-of-code-2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 55fc4a51f5b646bfae1d1f71b59b836a238da8f5
[INFO] checking garretpremo/advent-of-code-2021 against master#8424f8e8cdf07010967a57584fd647b30e930d4d for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarretpremo%2Fadvent-of-code-2021" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/garretpremo/advent-of-code-2021 on toolchain 8424f8e8cdf07010967a57584fd647b30e930d4d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/garretpremo/advent-of-code-2021
[INFO] finished tweaking git repo https://github.com/garretpremo/advent-of-code-2021
[INFO] tweaked toml for git repo https://github.com/garretpremo/advent-of-code-2021 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/garretpremo/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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eef12c9e6e79bdcdfcb8fc48064da4bbb3d2f5312abcdaa52d153ee4bddaa57f
[INFO] running `Command { std: "docker" "start" "-a" "eef12c9e6e79bdcdfcb8fc48064da4bbb3d2f5312abcdaa52d153ee4bddaa57f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eef12c9e6e79bdcdfcb8fc48064da4bbb3d2f5312abcdaa52d153ee4bddaa57f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eef12c9e6e79bdcdfcb8fc48064da4bbb3d2f5312abcdaa52d153ee4bddaa57f", kill_on_drop: false }`
[INFO] [stdout] eef12c9e6e79bdcdfcb8fc48064da4bbb3d2f5312abcdaa52d153ee4bddaa57f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+8424f8e8cdf07010967a57584fd647b30e930d4d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6691b2c33be3f5b76623109de81a2995b7ac3108282ef749c568f076f1388b1b
[INFO] running `Command { std: "docker" "start" "-a" "6691b2c33be3f5b76623109de81a2995b7ac3108282ef749c568f076f1388b1b", kill_on_drop: false }`
[INFO] [stderr]     Checking aoc04 v0.1.0 (/opt/rustwide/workdir/aoc04)
[INFO] [stderr]     Checking aoc10 v0.1.0 (/opt/rustwide/workdir/aoc10)
[INFO] [stderr]     Checking aoc13 v0.1.0 (/opt/rustwide/workdir/aoc13)
[INFO] [stderr]     Checking aoc17 v0.1.0 (/opt/rustwide/workdir/aoc17)
[INFO] [stderr]     Checking aoc18 v0.1.0 (/opt/rustwide/workdir/aoc18)
[INFO] [stderr]     Checking aoc09 v0.1.0 (/opt/rustwide/workdir/aoc09)
[INFO] [stderr]     Checking aoc15 v0.1.0 (/opt/rustwide/workdir/aoc15)
[INFO] [stderr]     Checking aoc08 v0.1.0 (/opt/rustwide/workdir/aoc08)
[INFO] [stderr]     Checking aoc03 v0.1.0 (/opt/rustwide/workdir/aoc03)
[INFO] [stderr]     Checking advent-of-code-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aoc16 v0.1.0 (/opt/rustwide/workdir/aoc16)
[INFO] [stderr]     Checking aoc01 v0.1.0 (/opt/rustwide/workdir/aoc01)
[INFO] [stderr]     Checking aoc07 v0.1.0 (/opt/rustwide/workdir/aoc07)
[INFO] [stderr]     Checking aoc02 v0.1.0 (/opt/rustwide/workdir/aoc02)
[INFO] [stderr]     Checking aoc06 v0.1.0 (/opt/rustwide/workdir/aoc06)
[INFO] [stdout] warning: function `calculate_winning_board_and_score` is never used
[INFO] [stdout]   --> aoc04/src/main.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn calculate_winning_board_and_score(number_draws: Vec<u32>, mut bingo_boards: Vec<Bingo>) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking aoc12 v0.1.0 (/opt/rustwide/workdir/aoc12)
[INFO] [stderr]     Checking aoc11 v0.1.0 (/opt/rustwide/workdir/aoc11)
[INFO] [stdout] warning: function `calculate_winning_board_and_score` is never used
[INFO] [stdout]   --> aoc04/src/main.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn calculate_winning_board_and_score(number_draws: Vec<u32>, mut bingo_boards: Vec<Bingo>) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking aoc05 v0.1.0 (/opt/rustwide/workdir/aoc05)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking aoc14 v0.1.0 (/opt/rustwide/workdir/aoc14)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "6691b2c33be3f5b76623109de81a2995b7ac3108282ef749c568f076f1388b1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6691b2c33be3f5b76623109de81a2995b7ac3108282ef749c568f076f1388b1b", kill_on_drop: false }`
[INFO] [stdout] 6691b2c33be3f5b76623109de81a2995b7ac3108282ef749c568f076f1388b1b
[INFO] checking garretpremo/advent-of-code-2021 against try#047472f299946caf090d1b5608ae4bd9f0416256+rustflags=-Ddereferencing_mut_binding for pr-120095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgarretpremo%2Fadvent-of-code-2021" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/garretpremo/advent-of-code-2021 on toolchain 047472f299946caf090d1b5608ae4bd9f0416256
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/garretpremo/advent-of-code-2021
[INFO] finished tweaking git repo https://github.com/garretpremo/advent-of-code-2021
[INFO] tweaked toml for git repo https://github.com/garretpremo/advent-of-code-2021 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/garretpremo/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" "+047472f299946caf090d1b5608ae4bd9f0416256" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+047472f299946caf090d1b5608ae4bd9f0416256" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07bd192c3248aac6f454f61c9d46da90476aea1301acd54884056ad7fd565429
[INFO] running `Command { std: "docker" "start" "-a" "07bd192c3248aac6f454f61c9d46da90476aea1301acd54884056ad7fd565429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07bd192c3248aac6f454f61c9d46da90476aea1301acd54884056ad7fd565429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07bd192c3248aac6f454f61c9d46da90476aea1301acd54884056ad7fd565429", kill_on_drop: false }`
[INFO] [stdout] 07bd192c3248aac6f454f61c9d46da90476aea1301acd54884056ad7fd565429
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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 -Ddereferencing_mut_binding" "-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" "+047472f299946caf090d1b5608ae4bd9f0416256" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3e0df874ae57e3532d747e6dd15b28c9004840ecf8ceb9bea42ebf2148592042
[INFO] running `Command { std: "docker" "start" "-a" "3e0df874ae57e3532d747e6dd15b28c9004840ecf8ceb9bea42ebf2148592042", kill_on_drop: false }`
[INFO] [stderr]     Checking advent-of-code-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking aoc14 v0.1.0 (/opt/rustwide/workdir/aoc14)
[INFO] [stderr]     Checking aoc11 v0.1.0 (/opt/rustwide/workdir/aoc11)
[INFO] [stderr]     Checking aoc01 v0.1.0 (/opt/rustwide/workdir/aoc01)
[INFO] [stderr]     Checking aoc12 v0.1.0 (/opt/rustwide/workdir/aoc12)
[INFO] [stderr]     Checking aoc04 v0.1.0 (/opt/rustwide/workdir/aoc04)
[INFO] [stderr]     Checking aoc15 v0.1.0 (/opt/rustwide/workdir/aoc15)
[INFO] [stderr]     Checking aoc17 v0.1.0 (/opt/rustwide/workdir/aoc17)
[INFO] [stderr]     Checking aoc13 v0.1.0 (/opt/rustwide/workdir/aoc13)
[INFO] [stderr]     Checking aoc16 v0.1.0 (/opt/rustwide/workdir/aoc16)
[INFO] [stderr]     Checking aoc18 v0.1.0 (/opt/rustwide/workdir/aoc18)
[INFO] [stderr]     Checking aoc09 v0.1.0 (/opt/rustwide/workdir/aoc09)
[INFO] [stderr]     Checking aoc07 v0.1.0 (/opt/rustwide/workdir/aoc07)
[INFO] [stderr]     Checking aoc06 v0.1.0 (/opt/rustwide/workdir/aoc06)
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> aoc18/src/main.rs:136:31
[INFO] [stdout]     |
[INFO] [stdout] 136 |                 SnailNum::Num(mut _value) => self.left = SnailNum::Num(_value + value)
[INFO] [stdout]     |                               ^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> aoc18/src/main.rs:136:31
[INFO] [stdout]     |
[INFO] [stdout] 136 |                 SnailNum::Num(mut _value) => self.left = SnailNum::Num(_value + value)
[INFO] [stdout]     |                               ^^^^^^^^^^
[INFO] [stdout]     = note: requested on the command line with `-D dereferencing-mut-binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> aoc18/src/main.rs:143:27
[INFO] [stdout]     |
[INFO] [stdout] 143 |             SnailNum::Num(mut _value) => self.right = SnailNum::Num(_value + value)
[INFO] [stdout]     |                           ^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> aoc18/src/main.rs:143:27
[INFO] [stdout]     |
[INFO] [stdout] 143 |             SnailNum::Num(mut _value) => self.right = SnailNum::Num(_value + value)
[INFO] [stdout]     |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> aoc18/src/main.rs:151:31
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 SnailNum::Num(mut _value) => self.right = SnailNum::Num(_value + value)
[INFO] [stdout]     |                               ^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> aoc18/src/main.rs:151:31
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 SnailNum::Num(mut _value) => self.right = SnailNum::Num(_value + value)
[INFO] [stdout]     |                               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> aoc18/src/main.rs:158:27
[INFO] [stdout]     |
[INFO] [stdout] 158 |             SnailNum::Num(mut _value) => self.left = SnailNum::Num(_value + value)
[INFO] [stdout]     |                           ^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> aoc18/src/main.rs:158:27
[INFO] [stdout]     |
[INFO] [stdout] 158 |             SnailNum::Num(mut _value) => self.left = SnailNum::Num(_value + value)
[INFO] [stdout]     |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking aoc05 v0.1.0 (/opt/rustwide/workdir/aoc05)
[INFO] [stderr]     Checking aoc03 v0.1.0 (/opt/rustwide/workdir/aoc03)
[INFO] [stdout] warning: function `calculate_winning_board_and_score` is never used
[INFO] [stdout]   --> aoc04/src/main.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn calculate_winning_board_and_score(number_draws: Vec<u32>, mut bingo_boards: Vec<Bingo>) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking aoc10 v0.1.0 (/opt/rustwide/workdir/aoc10)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> aoc18/src/main.rs:136:31
[INFO] [stdout]     |
[INFO] [stdout] 136 |                 SnailNum::Num(mut _value) => self.left = SnailNum::Num(_value + value)
[INFO] [stdout]     |                               ^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> aoc18/src/main.rs:136:31
[INFO] [stdout]     |
[INFO] [stdout] 136 |                 SnailNum::Num(mut _value) => self.left = SnailNum::Num(_value + value)
[INFO] [stdout]     |                               ^^^^^^^^^^
[INFO] [stdout]     = note: requested on the command line with `-D dereferencing-mut-binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> aoc18/src/main.rs:143:27
[INFO] [stdout]     |
[INFO] [stdout] 143 |             SnailNum::Num(mut _value) => self.right = SnailNum::Num(_value + value)
[INFO] [stdout]     |                           ^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> aoc18/src/main.rs:143:27
[INFO] [stdout]     |
[INFO] [stdout] 143 |             SnailNum::Num(mut _value) => self.right = SnailNum::Num(_value + value)
[INFO] [stdout]     |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> aoc18/src/main.rs:151:31
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 SnailNum::Num(mut _value) => self.right = SnailNum::Num(_value + value)
[INFO] [stdout]     |                               ^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> aoc18/src/main.rs:151:31
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 SnailNum::Num(mut _value) => self.right = SnailNum::Num(_value + value)
[INFO] [stdout]     |                               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: dereferencing `mut` binding
[INFO] [stdout]    --> aoc18/src/main.rs:158:27
[INFO] [stdout]     |
[INFO] [stdout] 158 |             SnailNum::Num(mut _value) => self.left = SnailNum::Num(_value + value)
[INFO] [stdout]     |                           ^^^^^^^^^^ `mut` dereferences the type of this binding
[INFO] [stdout]     |
[INFO] [stdout] help: this will change in edition 2024
[INFO] [stdout]    --> aoc18/src/main.rs:158:27
[INFO] [stdout]     |
[INFO] [stdout] 158 |             SnailNum::Num(mut _value) => self.left = SnailNum::Num(_value + value)
[INFO] [stdout]     |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking aoc08 v0.1.0 (/opt/rustwide/workdir/aoc08)
[INFO] [stderr]     Checking aoc02 v0.1.0 (/opt/rustwide/workdir/aoc02)
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc18` (bin "aoc18" test) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `aoc18` (bin "aoc18") due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "3e0df874ae57e3532d747e6dd15b28c9004840ecf8ceb9bea42ebf2148592042", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e0df874ae57e3532d747e6dd15b28c9004840ecf8ceb9bea42ebf2148592042", kill_on_drop: false }`
[INFO] [stdout] 3e0df874ae57e3532d747e6dd15b28c9004840ecf8ceb9bea42ebf2148592042