[INFO] cloning repository https://github.com/ArchitBhonsle/gtk-rs-experiment
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ArchitBhonsle/gtk-rs-experiment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArchitBhonsle%2Fgtk-rs-experiment", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArchitBhonsle%2Fgtk-rs-experiment'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 87e83b35d57753b8a9ebb5a5ad0b81d420f1d318
[INFO] checking ArchitBhonsle/gtk-rs-experiment against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FArchitBhonsle%2Fgtk-rs-experiment" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ArchitBhonsle/gtk-rs-experiment on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ArchitBhonsle/gtk-rs-experiment
[INFO] finished tweaking git repo https://github.com/ArchitBhonsle/gtk-rs-experiment
[INFO] tweaked toml for git repo https://github.com/ArchitBhonsle/gtk-rs-experiment written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/ArchitBhonsle/gtk-rs-experiment already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] edaaef3124a54286c4385896030df4cfa938509dab5ff00491ba6c315f0f5041
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "edaaef3124a54286c4385896030df4cfa938509dab5ff00491ba6c315f0f5041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "edaaef3124a54286c4385896030df4cfa938509dab5ff00491ba6c315f0f5041", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edaaef3124a54286c4385896030df4cfa938509dab5ff00491ba6c315f0f5041", kill_on_drop: false }`
[INFO] [stdout] edaaef3124a54286c4385896030df4cfa938509dab5ff00491ba6c315f0f5041
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f11bc4a391cabf291848a0c4f151ecd6054128005982b00efaeed5ee0977ef0d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f11bc4a391cabf291848a0c4f151ecd6054128005982b00efaeed5ee0977ef0d", kill_on_drop: false }`
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[INFO] [stderr]    Compiling gio-sys v0.10.1
[INFO] [stderr]    Compiling pango-sys v0.10.0
[INFO] [stderr]    Compiling cairo-sys-rs v0.10.0
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[INFO] [stderr]    Compiling atk-sys v0.10.0
[INFO] [stderr]    Compiling gdk-sys v0.10.0
[INFO] [stderr]    Compiling gtk-sys v0.10.0
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[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking polars-arrow v0.12.0 (https://github.com/ritchie46/polars#1a632a3c)
[INFO] [stderr]     Checking polars-core v0.12.0 (https://github.com/ritchie46/polars#1a632a3c)
[INFO] [stderr]     Checking polars-io v0.12.0 (https://github.com/ritchie46/polars#1a632a3c)
[INFO] [stderr]     Checking polars-lazy v0.12.0 (https://github.com/ritchie46/polars#1a632a3c)
[INFO] [stderr]     Checking polars v0.12.0 (https://github.com/ritchie46/polars#1a632a3c)
[INFO] [stderr]     Checking gtk-rs-experiment v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `costs`
[INFO] [stdout]   --> src/ml.rs:94:10
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let (costs, weights, bias) = update(weights, bias, x_train, y_train, learning_rate, iterations);
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_costs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `costs`
[INFO] [stdout]   --> src/ml.rs:94:10
[INFO] [stdout]    |
[INFO] [stdout] 94 |     let (costs, weights, bias) = update(weights, bias, x_train, y_train, learning_rate, iterations);
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_costs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` 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 [unoptimized + debuginfo] target(s) in 3m 16s
[INFO] running `Command { std: "docker" "inspect" "f11bc4a391cabf291848a0c4f151ecd6054128005982b00efaeed5ee0977ef0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f11bc4a391cabf291848a0c4f151ecd6054128005982b00efaeed5ee0977ef0d", kill_on_drop: false }`
[INFO] [stdout] f11bc4a391cabf291848a0c4f151ecd6054128005982b00efaeed5ee0977ef0d