[INFO] cloning repository https://github.com/CalebLItalien/optimal_2048
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/CalebLItalien/optimal_2048" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCalebLItalien%2Foptimal_2048", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCalebLItalien%2Foptimal_2048'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 770e786ba7a2b3c34ca0c95c75f9aa5981abbbe1
[INFO] building CalebLItalien/optimal_2048 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%2FCalebLItalien%2Foptimal_2048" "/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/CalebLItalien/optimal_2048 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/CalebLItalien/optimal_2048
[INFO] finished tweaking git repo https://github.com/CalebLItalien/optimal_2048
[INFO] tweaked toml for git repo https://github.com/CalebLItalien/optimal_2048 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/CalebLItalien/optimal_2048 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] 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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad75febcdeac5b4974e1d396977802c4db63fb79cfb1226f53c7eb988d5fef03
[INFO] running `Command { std: "docker" "start" "-a" "ad75febcdeac5b4974e1d396977802c4db63fb79cfb1226f53c7eb988d5fef03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad75febcdeac5b4974e1d396977802c4db63fb79cfb1226f53c7eb988d5fef03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad75febcdeac5b4974e1d396977802c4db63fb79cfb1226f53c7eb988d5fef03", kill_on_drop: false }`
[INFO] [stdout] ad75febcdeac5b4974e1d396977802c4db63fb79cfb1226f53c7eb988d5fef03
[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 -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] 03e8b892ca53d3c4c0d046fea45c4be0385cf8643d16e64e3792591be488def3
[INFO] running `Command { std: "docker" "start" "-a" "03e8b892ca53d3c4c0d046fea45c4be0385cf8643d16e64e3792591be488def3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling getrandom v0.2.11
[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 optimal_2048 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `PadToWidth` is never used
[INFO] [stdout]   --> src/game_utils.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | trait PadToWidth {
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.57s
[INFO] running `Command { std: "docker" "inspect" "03e8b892ca53d3c4c0d046fea45c4be0385cf8643d16e64e3792591be488def3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03e8b892ca53d3c4c0d046fea45c4be0385cf8643d16e64e3792591be488def3", kill_on_drop: false }`
[INFO] [stdout] 03e8b892ca53d3c4c0d046fea45c4be0385cf8643d16e64e3792591be488def3
[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 -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] eb706d56f08995230d6100d36bd2e3297a18de51fbb8c4a9bb5368b6f68e6a02
[INFO] running `Command { std: "docker" "start" "-a" "eb706d56f08995230d6100d36bd2e3297a18de51fbb8c4a9bb5368b6f68e6a02", kill_on_drop: false }`
[INFO] [stderr]    Compiling optimal_2048 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `PadToWidth` is never used
[INFO] [stdout]   --> src/game_utils.rs:12:7
[INFO] [stdout]    |
[INFO] [stdout] 12 | trait PadToWidth {
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "eb706d56f08995230d6100d36bd2e3297a18de51fbb8c4a9bb5368b6f68e6a02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb706d56f08995230d6100d36bd2e3297a18de51fbb8c4a9bb5368b6f68e6a02", kill_on_drop: false }`
[INFO] [stdout] eb706d56f08995230d6100d36bd2e3297a18de51fbb8c4a9bb5368b6f68e6a02