[INFO] cloning repository https://github.com/LXZE/AOC_2015
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LXZE/AOC_2015" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLXZE%2FAOC_2015", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLXZE%2FAOC_2015'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81c8038cb57f69b0a63990b8c826ae39286ef886
[INFO] checking LXZE/AOC_2015 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLXZE%2FAOC_2015" "/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/LXZE/AOC_2015 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/LXZE/AOC_2015
[INFO] finished tweaking git repo https://github.com/LXZE/AOC_2015
[INFO] tweaked toml for git repo https://github.com/LXZE/AOC_2015 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/LXZE/AOC_2015 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded regex v1.10.1
[INFO] [stderr]   Downloaded regex-automata v0.4.2
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b82b70a5042ba62e49de1b84b894f3003defc2f2e1d1286ba92d4c05ae3fe8ac
[INFO] running `Command { std: "docker" "start" "-a" "b82b70a5042ba62e49de1b84b894f3003defc2f2e1d1286ba92d4c05ae3fe8ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b82b70a5042ba62e49de1b84b894f3003defc2f2e1d1286ba92d4c05ae3fe8ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b82b70a5042ba62e49de1b84b894f3003defc2f2e1d1286ba92d4c05ae3fe8ac", kill_on_drop: false }`
[INFO] [stdout] b82b70a5042ba62e49de1b84b894f3003defc2f2e1d1286ba92d4c05ae3fe8ac
[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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 566c64a76a0518de9f135233eec9995a6fe4ca4ddb81b116cb19ed8178064dc2
[INFO] running `Command { std: "docker" "start" "-a" "566c64a76a0518de9f135233eec9995a6fe4ca4ddb81b116cb19ed8178064dc2", kill_on_drop: false }`
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking hashbrown v0.14.1
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking pico-args v0.5.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking indexmap v2.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking regex-automata v0.4.2
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking regex v1.10.1
[INFO] [stderr]     Checking serde_json v1.0.107
[INFO] [stderr]     Checking fancy-regex v0.11.0
[INFO] [stderr]     Checking advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `md5` is imported redundantly
[INFO] [stdout]  --> src/bin/04.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `md5` is imported redundantly
[INFO] [stdout]  --> src/bin/04.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Itertools` is imported redundantly
[INFO] [stdout]   --> src/bin/20.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     use itertools::Itertools;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 75 |
[INFO] [stdout] 76 |     use super::*;
[INFO] [stdout]    |         -------- the item `Itertools` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.17s
[INFO] running `Command { std: "docker" "inspect" "566c64a76a0518de9f135233eec9995a6fe4ca4ddb81b116cb19ed8178064dc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "566c64a76a0518de9f135233eec9995a6fe4ca4ddb81b116cb19ed8178064dc2", kill_on_drop: false }`
[INFO] [stdout] 566c64a76a0518de9f135233eec9995a6fe4ca4ddb81b116cb19ed8178064dc2
[INFO] checking LXZE/AOC_2015 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLXZE%2FAOC_2015" "/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/LXZE/AOC_2015 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6-tc2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/LXZE/AOC_2015
[INFO] finished tweaking git repo https://github.com/LXZE/AOC_2015
[INFO] tweaked toml for git repo https://github.com/LXZE/AOC_2015 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/LXZE/AOC_2015 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 338f5f459b2c65123380e1896d6db5e51acca0a17882b095174e7ca08b4e57fc
[INFO] running `Command { std: "docker" "start" "-a" "338f5f459b2c65123380e1896d6db5e51acca0a17882b095174e7ca08b4e57fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "338f5f459b2c65123380e1896d6db5e51acca0a17882b095174e7ca08b4e57fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "338f5f459b2c65123380e1896d6db5e51acca0a17882b095174e7ca08b4e57fc", kill_on_drop: false }`
[INFO] [stdout] 338f5f459b2c65123380e1896d6db5e51acca0a17882b095174e7ca08b4e57fc
[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" "-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca799b8e59ea87885d4c595ea0d011434045c430e1d2bbb66e41c6072bdbcadf
[INFO] running `Command { std: "docker" "start" "-a" "ca799b8e59ea87885d4c595ea0d011434045c430e1d2bbb66e41c6072bdbcadf", kill_on_drop: false }`
[INFO] [stderr]    Compiling memoffset v0.9.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.15
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling rayon-core v1.12.0
[INFO] [stderr]     Checking hashbrown v0.14.1
[INFO] [stderr]     Checking bit-vec v0.6.3
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]     Checking aho-corasick v1.1.2
[INFO] [stderr]     Checking pico-args v0.5.0
[INFO] [stderr]     Checking md5 v0.7.0
[INFO] [stderr]     Checking bit-set v0.5.3
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking indexmap v2.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking petgraph v0.6.4
[INFO] [stderr]     Checking rayon v1.8.0
[INFO] [stderr]     Checking regex-automata v0.4.2
[INFO] [stderr]     Checking regex v1.10.1
[INFO] [stderr]     Checking serde_json v1.0.107
[INFO] [stderr]     Checking fancy-regex v0.11.0
[INFO] [stderr]     Checking advent_of_code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Itertools` is imported redundantly
[INFO] [stdout]   --> src/bin/20.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     use itertools::Itertools;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 75 |
[INFO] [stdout] 76 |     use super::*;
[INFO] [stdout]    |         -------- the item `Itertools` is already imported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `md5` is imported redundantly
[INFO] [stdout]  --> src/bin/04.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `md5` is imported redundantly
[INFO] [stdout]  --> src/bin/04.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use md5;
[INFO] [stdout]   |     ^^^ the item `md5` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.02s
[INFO] running `Command { std: "docker" "inspect" "ca799b8e59ea87885d4c595ea0d011434045c430e1d2bbb66e41c6072bdbcadf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca799b8e59ea87885d4c595ea0d011434045c430e1d2bbb66e41c6072bdbcadf", kill_on_drop: false }`
[INFO] [stdout] ca799b8e59ea87885d4c595ea0d011434045c430e1d2bbb66e41c6072bdbcadf