[INFO] cloning repository https://github.com/Hsun1031/genetic_algorihm_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Hsun1031/genetic_algorihm_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHsun1031%2Fgenetic_algorihm_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHsun1031%2Fgenetic_algorihm_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d16b56fd5ec1d2d3c75977791bb99300296f16f3
[INFO] building Hsun1031/genetic_algorihm_rust against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHsun1031%2Fgenetic_algorihm_rust" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Hsun1031/genetic_algorihm_rust on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Hsun1031/genetic_algorihm_rust
[INFO] finished tweaking git repo https://github.com/Hsun1031/genetic_algorihm_rust
[INFO] tweaked toml for git repo https://github.com/Hsun1031/genetic_algorihm_rust written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Hsun1031/genetic_algorihm_rust 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "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-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7b59ffdccec269505f9d7c9f09debdc2daecec62c741c81ee7a34f1a1b27e186
[INFO] running `Command { std: "docker" "start" "-a" "7b59ffdccec269505f9d7c9f09debdc2daecec62c741c81ee7a34f1a1b27e186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b59ffdccec269505f9d7c9f09debdc2daecec62c741c81ee7a34f1a1b27e186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b59ffdccec269505f9d7c9f09debdc2daecec62c741c81ee7a34f1a1b27e186", kill_on_drop: false }`
[INFO] [stdout] 7b59ffdccec269505f9d7c9f09debdc2daecec62c741c81ee7a34f1a1b27e186
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae9d1320d409b1e96ec6844cdc76772f293687ad7a5e7f41b590246f8dbf2b4a
[INFO] running `Command { std: "docker" "start" "-a" "ae9d1320d409b1e96ec6844cdc76772f293687ad7a5e7f41b590246f8dbf2b4a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.149
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling genetic_algorithm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `new_output_list`
[INFO] [stdout]   --> src/main.rs:18:29
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let (new_bits_list, new_output_list)            = selection(&bits_list, &output_list);
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_output_list`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cross_output_list`
[INFO] [stdout]   --> src/main.rs:19:31
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let (cross_bits_list, cross_output_list)        = crossover(&new_bits_list);
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cross_output_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.21s
[INFO] running `Command { std: "docker" "inspect" "ae9d1320d409b1e96ec6844cdc76772f293687ad7a5e7f41b590246f8dbf2b4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae9d1320d409b1e96ec6844cdc76772f293687ad7a5e7f41b590246f8dbf2b4a", kill_on_drop: false }`
[INFO] [stdout] ae9d1320d409b1e96ec6844cdc76772f293687ad7a5e7f41b590246f8dbf2b4a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49e13868649665ec0d1f579a177e047f4e034de76c333fd7b17f15df94fe9484
[INFO] running `Command { std: "docker" "start" "-a" "49e13868649665ec0d1f579a177e047f4e034de76c333fd7b17f15df94fe9484", kill_on_drop: false }`
[INFO] [stderr]    Compiling genetic_algorithm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `new_output_list`
[INFO] [stdout]   --> src/main.rs:18:29
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let (new_bits_list, new_output_list)            = selection(&bits_list, &output_list);
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_new_output_list`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cross_output_list`
[INFO] [stdout]   --> src/main.rs:19:31
[INFO] [stdout]    |
[INFO] [stdout] 19 |         let (cross_bits_list, cross_output_list)        = crossover(&new_bits_list);
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cross_output_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "49e13868649665ec0d1f579a177e047f4e034de76c333fd7b17f15df94fe9484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49e13868649665ec0d1f579a177e047f4e034de76c333fd7b17f15df94fe9484", kill_on_drop: false }`
[INFO] [stdout] 49e13868649665ec0d1f579a177e047f4e034de76c333fd7b17f15df94fe9484