[INFO] cloning repository https://github.com/BenGale93/aoc-2023
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BenGale93/aoc-2023" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenGale93%2Faoc-2023", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenGale93%2Faoc-2023'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fa459d738c80c872ac98ec7b95a5be3429ac1790
[INFO] testing BenGale93/aoc-2023 against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenGale93%2Faoc-2023" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BenGale93/aoc-2023 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BenGale93/aoc-2023
[INFO] finished tweaking git repo https://github.com/BenGale93/aoc-2023
[INFO] tweaked toml for git repo https://github.com/BenGale93/aoc-2023 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/BenGale93/aoc-2023 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded memoize v0.4.1
[INFO] [stderr]   Downloaded memoize-inner v0.4.0
[INFO] [stderr]   Downloaded fancy-regex v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1aa8a2ab3c923bf7014b16e4b348df3261775f8eefe1c99609bc78ea7ce18b09
[INFO] running `Command { std: "docker" "start" "-a" "1aa8a2ab3c923bf7014b16e4b348df3261775f8eefe1c99609bc78ea7ce18b09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1aa8a2ab3c923bf7014b16e4b348df3261775f8eefe1c99609bc78ea7ce18b09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1aa8a2ab3c923bf7014b16e4b348df3261775f8eefe1c99609bc78ea7ce18b09", kill_on_drop: false }`
[INFO] [stdout] 1aa8a2ab3c923bf7014b16e4b348df3261775f8eefe1c99609bc78ea7ce18b09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1bd5e7ffb5c9d5b0582d37fdd74d18170ff4a8a7998355f2f1ab8a69d8f84235
[INFO] running `Command { std: "docker" "start" "-a" "1bd5e7ffb5c9d5b0582d37fdd74d18170ff4a8a7998355f2f1ab8a69d8f84235", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling anstyle v1.0.4
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling clap_lex v0.6.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling anstyle-parse v0.2.2
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling anstream v0.6.4
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling itertools v0.12.0
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling ahash v0.7.7
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling clap_builder v4.4.9
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling rayon v1.8.0
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling counter v0.5.7
[INFO] [stderr]    Compiling lru v0.7.8
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling memoize-inner v0.4.0
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]    Compiling fancy-regex v0.12.0
[INFO] [stderr]    Compiling memoize v0.4.1
[INFO] [stderr]    Compiling clap v4.4.10
[INFO] [stderr]    Compiling aoc_utils v0.1.0 (/opt/rustwide/workdir/aoc_utils)
[INFO] [stderr]    Compiling d17 v0.1.0 (/opt/rustwide/workdir/d17)
[INFO] [stderr]    Compiling d10 v0.1.0 (/opt/rustwide/workdir/d10)
[INFO] [stderr]    Compiling d19 v0.1.0 (/opt/rustwide/workdir/d19)
[INFO] [stderr]    Compiling d20 v0.1.0 (/opt/rustwide/workdir/d20)
[INFO] [stderr]    Compiling d06 v0.1.0 (/opt/rustwide/workdir/d06)
[INFO] [stderr]    Compiling d01 v0.1.0 (/opt/rustwide/workdir/d01)
[INFO] [stderr]    Compiling d05 v0.1.0 (/opt/rustwide/workdir/d05)
[INFO] [stderr]    Compiling d14 v0.1.0 (/opt/rustwide/workdir/d14)
[INFO] [stderr]    Compiling d12 v0.1.0 (/opt/rustwide/workdir/d12)
[INFO] [stderr]    Compiling d11 v0.1.0 (/opt/rustwide/workdir/d11)
[INFO] [stderr]    Compiling d15 v0.1.0 (/opt/rustwide/workdir/d15)
[INFO] [stderr]    Compiling d18 v0.1.0 (/opt/rustwide/workdir/d18)
[INFO] [stderr]    Compiling d07 v0.1.0 (/opt/rustwide/workdir/d07)
[INFO] [stderr]    Compiling d08 v0.1.0 (/opt/rustwide/workdir/d08)
[INFO] [stderr]    Compiling d13 v0.1.0 (/opt/rustwide/workdir/d13)
[INFO] [stderr]    Compiling d04 v0.1.0 (/opt/rustwide/workdir/d04)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> d11/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iter_map_windows)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `d11` (bin "d11") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `module_map`
[INFO] [stdout]   --> d20/src/main.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut module_map = parse_puzzle(input);
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_module_map`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> d20/src/main.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut module_map = parse_puzzle(input);
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1bd5e7ffb5c9d5b0582d37fdd74d18170ff4a8a7998355f2f1ab8a69d8f84235", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1bd5e7ffb5c9d5b0582d37fdd74d18170ff4a8a7998355f2f1ab8a69d8f84235", kill_on_drop: false }`
[INFO] [stdout] 1bd5e7ffb5c9d5b0582d37fdd74d18170ff4a8a7998355f2f1ab8a69d8f84235
[INFO] testing BenGale93/aoc-2023 against beta-2023-12-22 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenGale93%2Faoc-2023" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BenGale93/aoc-2023 on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BenGale93/aoc-2023
[INFO] finished tweaking git repo https://github.com/BenGale93/aoc-2023
[INFO] tweaked toml for git repo https://github.com/BenGale93/aoc-2023 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/BenGale93/aoc-2023 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" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e61182680351bd1c9860f3bec42a3746c6fbf026f35000cebecff6b8d7f7f3a
[INFO] running `Command { std: "docker" "start" "-a" "1e61182680351bd1c9860f3bec42a3746c6fbf026f35000cebecff6b8d7f7f3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e61182680351bd1c9860f3bec42a3746c6fbf026f35000cebecff6b8d7f7f3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e61182680351bd1c9860f3bec42a3746c6fbf026f35000cebecff6b8d7f7f3a", kill_on_drop: false }`
[INFO] [stdout] 1e61182680351bd1c9860f3bec42a3746c6fbf026f35000cebecff6b8d7f7f3a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 995e2c8ca9edb60010f3045282ebbc479d1569e99eedd1625e32389f2f1a56bd
[INFO] running `Command { std: "docker" "start" "-a" "995e2c8ca9edb60010f3045282ebbc479d1569e99eedd1625e32389f2f1a56bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.70
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling utf8parse v0.2.1
[INFO] [stderr]    Compiling colorchoice v1.0.0
[INFO] [stderr]    Compiling anstyle-query v1.0.0
[INFO] [stderr]    Compiling anstyle v1.0.4
[INFO] [stderr]    Compiling clap_lex v0.6.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.6.4
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling regex-syntax v0.8.2
[INFO] [stderr]    Compiling anstyle-parse v0.2.2
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling once_cell v1.19.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling anstream v0.6.4
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling itertools v0.12.0
[INFO] [stderr]    Compiling ahash v0.7.7
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling clap_builder v4.4.9
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling aho-corasick v1.1.2
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]    Compiling bit-set v0.5.3
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling crossbeam-deque v0.8.3
[INFO] [stderr]    Compiling getrandom v0.2.11
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling rayon v1.8.0
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling counter v0.5.7
[INFO] [stderr]    Compiling lru v0.7.8
[INFO] [stderr]    Compiling regex-automata v0.4.3
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling clap_derive v4.4.7
[INFO] [stderr]    Compiling memoize-inner v0.4.0
[INFO] [stderr]    Compiling regex v1.10.2
[INFO] [stderr]    Compiling fancy-regex v0.12.0
[INFO] [stderr]    Compiling memoize v0.4.1
[INFO] [stderr]    Compiling clap v4.4.10
[INFO] [stderr]    Compiling aoc_utils v0.1.0 (/opt/rustwide/workdir/aoc_utils)
[INFO] [stderr]    Compiling d09 v0.1.0 (/opt/rustwide/workdir/d09)
[INFO] [stderr]    Compiling d19 v0.1.0 (/opt/rustwide/workdir/d19)
[INFO] [stderr]    Compiling d16 v0.1.0 (/opt/rustwide/workdir/d16)
[INFO] [stderr]    Compiling d12 v0.1.0 (/opt/rustwide/workdir/d12)
[INFO] [stderr]    Compiling d02 v0.1.0 (/opt/rustwide/workdir/d02)
[INFO] [stderr]    Compiling d10 v0.1.0 (/opt/rustwide/workdir/d10)
[INFO] [stderr]    Compiling d03 v0.1.0 (/opt/rustwide/workdir/d03)
[INFO] [stderr]    Compiling d06 v0.1.0 (/opt/rustwide/workdir/d06)
[INFO] [stderr]    Compiling d07 v0.1.0 (/opt/rustwide/workdir/d07)
[INFO] [stderr]    Compiling d05 v0.1.0 (/opt/rustwide/workdir/d05)
[INFO] [stderr]    Compiling d18 v0.1.0 (/opt/rustwide/workdir/d18)
[INFO] [stderr]    Compiling d20 v0.1.0 (/opt/rustwide/workdir/d20)
[INFO] [stderr]    Compiling d15 v0.1.0 (/opt/rustwide/workdir/d15)
[INFO] [stderr]    Compiling d01 v0.1.0 (/opt/rustwide/workdir/d01)
[INFO] [stderr]    Compiling d13 v0.1.0 (/opt/rustwide/workdir/d13)
[INFO] [stderr]    Compiling d14 v0.1.0 (/opt/rustwide/workdir/d14)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> d09/src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iter_map_windows)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `d09` (bin "d09") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `module_map`
[INFO] [stdout]   --> d20/src/main.rs:63:13
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut module_map = parse_puzzle(input);
[INFO] [stdout]    |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_module_map`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> d20/src/main.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |     let mut module_map = parse_puzzle(input);
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "995e2c8ca9edb60010f3045282ebbc479d1569e99eedd1625e32389f2f1a56bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "995e2c8ca9edb60010f3045282ebbc479d1569e99eedd1625e32389f2f1a56bd", kill_on_drop: false }`
[INFO] [stdout] 995e2c8ca9edb60010f3045282ebbc479d1569e99eedd1625e32389f2f1a56bd
