[INFO] cloning repository https://github.com/mluts/rust-game-of-life
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mluts/rust-game-of-life" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmluts%2Frust-game-of-life", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmluts%2Frust-game-of-life'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba48ae7821b7b02edef6dfceb9dbbf5f12e11618
[INFO] checking mluts/rust-game-of-life against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmluts%2Frust-game-of-life" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mluts/rust-game-of-life 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] started tweaking git repo https://github.com/mluts/rust-game-of-life
[INFO] finished tweaking git repo https://github.com/mluts/rust-game-of-life
[INFO] tweaked toml for git repo https://github.com/mluts/rust-game-of-life written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mluts/rust-game-of-life 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 syn v1.0.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c89b35fc2836e98ada653d4723c7b766edb14dd716ef01df5a6cca78f65b0612
[INFO] running `Command { std: "docker" "start" "-a" "c89b35fc2836e98ada653d4723c7b766edb14dd716ef01df5a6cca78f65b0612", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c89b35fc2836e98ada653d4723c7b766edb14dd716ef01df5a6cca78f65b0612", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c89b35fc2836e98ada653d4723c7b766edb14dd716ef01df5a6cca78f65b0612", kill_on_drop: false }`
[INFO] [stdout] c89b35fc2836e98ada653d4723c7b766edb14dd716ef01df5a6cca78f65b0612
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] bb78d1dd3eb594e51b79ea8a5f050e095e2271ca8093f437f5c78dd6a2f9bb98
[INFO] running `Command { std: "docker" "start" "-a" "bb78d1dd3eb594e51b79ea8a5f050e095e2271ca8093f437f5c78dd6a2f9bb98", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.17
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[INFO] [stdout] warning: the item `Rng` is imported redundantly
[INFO] [stdout]  --> src/game.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::{prelude::*, Rng};
[INFO] [stdout]   |            ----------  ^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            the item `Rng` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Rng` is imported redundantly
[INFO] [stdout]  --> src/game.rs:2:24
[INFO] [stdout]   |
[INFO] [stdout] 2 | use rand::{prelude::*, Rng};
[INFO] [stdout]   |            ----------  ^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            the item `Rng` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary allocation, use `&` instead
[INFO] [stdout]    --> src/ui.rs:183:24
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let drawing_area = Box::new(gtk::DrawingArea::new)();
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_allocation)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary allocation, use `&` instead
[INFO] [stdout]    --> src/ui.rs:183:24
[INFO] [stdout]     |
[INFO] [stdout] 183 |     let drawing_area = Box::new(gtk::DrawingArea::new)();
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_allocation)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 52.55s
[INFO] running `Command { std: "docker" "inspect" "bb78d1dd3eb594e51b79ea8a5f050e095e2271ca8093f437f5c78dd6a2f9bb98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb78d1dd3eb594e51b79ea8a5f050e095e2271ca8093f437f5c78dd6a2f9bb98", kill_on_drop: false }`
[INFO] [stdout] bb78d1dd3eb594e51b79ea8a5f050e095e2271ca8093f437f5c78dd6a2f9bb98