[INFO] cloning repository https://github.com/zookini/aoc-2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zookini/aoc-2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzookini%2Faoc-2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzookini%2Faoc-2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 48e6bce83dc6203433e9a0fc13d368c31f2f2e89
[INFO] fixing zookini/aoc-2021 against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=end=2015,2024 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzookini%2Faoc-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] started tweaking git repo https://github.com/zookini/aoc-2021
[INFO] finished tweaking git repo https://github.com/zookini/aoc-2021
[INFO] tweaked toml for git repo https://github.com/zookini/aoc-2021 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zookini/aoc-2021 on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zookini/aoc-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" "+622891a4e29178280638a6b63a8908bde2c0c854" "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/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] a2f75c41cfe62cba875cbaf74e978b3ba436ca674ed48c31b17d450bec470386
[INFO] running `Command { std: "docker" "start" "a2f75c41cfe62cba875cbaf74e978b3ba436ca674ed48c31b17d450bec470386", 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" "a2f75c41cfe62cba875cbaf74e978b3ba436ca674ed48c31b17d450bec470386" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2f75c41cfe62cba875cbaf74e978b3ba436ca674ed48c31b17d450bec470386", 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=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "a2f75c41cfe62cba875cbaf74e978b3ba436ca674ed48c31b17d450bec470386" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=end=2015,2024", kill_on_drop: false }`
[INFO] [stderr] crater-edition-check: migrating to next edition
[INFO] [stderr]    Migrating Cargo.toml from 2021 edition to 2024
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]    Compiling aoc-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking funty v1.2.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Migrating build.rs from 2021 edition to 2024
[INFO] [stderr]     Checking wyz v0.4.0
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking crossbeam-epoch v0.9.5
[INFO] [stderr]     Checking bitvec v0.22.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking dashmap v5.0.0
[INFO] [stderr]    Migrating src/lib.rs from 2021 edition to 2024
[INFO] [stderr]        Fixed src/monad.rs (14 fixes)
[INFO] [stderr]    Migrating src/bin/20.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/15.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/21.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/10.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/16.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/06.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/18.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/12.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/24c.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/02.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/09.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/04.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/05.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/07.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/25.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/11.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/01.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/17.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/23.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/22.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/24b.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/24.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/08.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/03.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/13.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/19.rs from 2021 edition to 2024
[INFO] [stderr]    Migrating src/bin/14.rs from 2021 edition to 2024
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.53s
[INFO] [stderr] crater-edition-check: aoc-2021 v0.1.0 (/opt/rustwide/workdir) updating edition from 2021 to 2024
[INFO] [stderr]    Compiling aoc-2021 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]  --> src/monad.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]   |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]   |          |      |      |
[INFO] [stdout]   |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]   |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]   |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]   |
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]  --> src/monad.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]   |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]  --> src/monad.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]   |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]   |          |      |      |
[INFO] [stdout]   |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]   |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]   |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]   |
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]  --> src/monad.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]   |
[INFO] [stdout] 3 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]   |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/monad.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      |      |
[INFO] [stdout]    |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]   --> src/monad.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/monad.rs:29:10
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      |      |
[INFO] [stdout]    |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]   --> src/monad.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/monad.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      |      |
[INFO] [stdout]    |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]   --> src/monad.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/monad.rs:55:10
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      |      |
[INFO] [stdout]    |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]   --> src/monad.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/monad.rs:81:10
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      |      |
[INFO] [stdout]    |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]   --> src/monad.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:107:10
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:133:10
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]   --> src/monad.rs:81:10
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      |      |
[INFO] [stdout]    |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]   --> src/monad.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]    |
[INFO] [stdout] 81 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]    |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:107:10
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:159:10
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:185:10
[INFO] [stdout]     |
[INFO] [stdout] 185 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 185 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:211:10
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:211:9
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:237:10
[INFO] [stdout]     |
[INFO] [stdout] 237 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:237:9
[INFO] [stdout]     |
[INFO] [stdout] 237 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 237 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:263:10
[INFO] [stdout]     |
[INFO] [stdout] 263 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:263:9
[INFO] [stdout]     |
[INFO] [stdout] 263 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 263 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:289:10
[INFO] [stdout]     |
[INFO] [stdout] 289 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 289 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:315:10
[INFO] [stdout]     |
[INFO] [stdout] 315 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:315:9
[INFO] [stdout]     |
[INFO] [stdout] 315 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 315 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:133:10
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:133:9
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 133 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:341:10
[INFO] [stdout]     |
[INFO] [stdout] 341 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:341:9
[INFO] [stdout]     |
[INFO] [stdout] 341 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 341 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:159:10
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 159 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:185:10
[INFO] [stdout]     |
[INFO] [stdout] 185 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 185 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:211:10
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:211:9
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 211 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:237:10
[INFO] [stdout]     |
[INFO] [stdout] 237 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:237:9
[INFO] [stdout]     |
[INFO] [stdout] 237 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 237 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:263:10
[INFO] [stdout]     |
[INFO] [stdout] 263 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:263:9
[INFO] [stdout]     |
[INFO] [stdout] 263 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 263 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:289:10
[INFO] [stdout]     |
[INFO] [stdout] 289 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:289:9
[INFO] [stdout]     |
[INFO] [stdout] 289 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 289 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc-2021` (lib test) due to 14 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:315:10
[INFO] [stdout]     |
[INFO] [stdout] 315 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:315:9
[INFO] [stdout]     |
[INFO] [stdout] 315 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 315 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot mutably bind by value within an implicitly-borrowing pattern
[INFO] [stdout]    --> src/monad.rs:341:10
[INFO] [stdout]     |
[INFO] [stdout] 341 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |          ^^^    ^^^    ^^^    ^^^ `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      |      |
[INFO] [stdout]     |          |      |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          |      `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |          `mut` binding modifier not allowed when implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/reference/patterns.html#binding-modes>
[INFO] [stdout] note: matching on a reference type with a non-reference pattern implicitly borrows the contents
[INFO] [stdout]    --> src/monad.rs:341:9
[INFO] [stdout]     |
[INFO] [stdout] 341 |     let [mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this non-reference pattern matches on a reference type `&_`
[INFO] [stdout] help: match on the reference with a reference pattern to avoid implicitly borrowing
[INFO] [stdout]     |
[INFO] [stdout] 341 |     let &[mut w, mut x, mut y, mut z] = vars;
[INFO] [stdout]     |         +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `aoc-2021` (lib) due to 14 previous errors
[INFO] running `Command { std: "docker" "inspect" "a2f75c41cfe62cba875cbaf74e978b3ba436ca674ed48c31b17d450bec470386", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2f75c41cfe62cba875cbaf74e978b3ba436ca674ed48c31b17d450bec470386", kill_on_drop: false }`
[INFO] [stdout] a2f75c41cfe62cba875cbaf74e978b3ba436ca674ed48c31b17d450bec470386
