[INFO] cloning repository https://github.com/dmitmel/sort-visualization
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dmitmel/sort-visualization" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmitmel%2Fsort-visualization", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmitmel%2Fsort-visualization'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 895cedf116d57b1d9494297e1d56383c2370b57d
[INFO] checking dmitmel/sort-visualization against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdmitmel%2Fsort-visualization" "/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/dmitmel/sort-visualization 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/dmitmel/sort-visualization
[INFO] finished tweaking git repo https://github.com/dmitmel/sort-visualization
[INFO] tweaked toml for git repo https://github.com/dmitmel/sort-visualization written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dmitmel/sort-visualization 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pistoncore-window v0.34.0
[INFO] [stderr]   Downloaded piston-texture v0.6.0
[INFO] [stderr]   Downloaded vecmath v0.3.1
[INFO] [stderr]   Downloaded shader_version v0.3.0
[INFO] [stderr]   Downloaded pistoncore-input v0.23.0
[INFO] [stderr]   Downloaded pistoncore-event_loop v0.39.0
[INFO] [stderr]   Downloaded interpolation v0.1.0
[INFO] [stderr]   Downloaded pistoncore-sdl2_window v0.52.0
[INFO] [stderr]   Downloaded piston v0.39.0
[INFO] [stderr]   Downloaded backtrace v0.3.43
[INFO] [stderr]   Downloaded khronos_api v2.2.0
[INFO] [stderr]   Downloaded piston2d-opengl_graphics v0.57.0
[INFO] [stderr]   Downloaded piston2d-graphics v0.28.0
[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] c0d1e359abd467648fa1d594882111833906a1d3682fa4f1bcac76e7f8ac9819
[INFO] running `Command { std: "docker" "start" "-a" "c0d1e359abd467648fa1d594882111833906a1d3682fa4f1bcac76e7f8ac9819", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0d1e359abd467648fa1d594882111833906a1d3682fa4f1bcac76e7f8ac9819", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0d1e359abd467648fa1d594882111833906a1d3682fa4f1bcac76e7f8ac9819", kill_on_drop: false }`
[INFO] [stdout] c0d1e359abd467648fa1d594882111833906a1d3682fa4f1bcac76e7f8ac9819
[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] 616a3f7dd7694fb08ea621f73946b2fe3b52b10cea4cc2cca68d141b93cb367e
[INFO] running `Command { std: "docker" "start" "-a" "616a3f7dd7694fb08ea621f73946b2fe3b52b10cea4cc2cca68d141b93cb367e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]     Checking piston-float v0.3.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking shader_version v0.3.0
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling sdl2-sys v0.31.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking piston-viewport v0.5.0
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking vecmath v0.3.1
[INFO] [stderr]     Checking piston-texture v0.6.0
[INFO] [stderr]    Compiling gl_generator v0.10.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking interpolation v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
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[INFO] [stderr]    Compiling num-rational v0.2.3
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[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking num_cpus v1.12.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand v0.5.6
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[INFO] [stderr]    Compiling gl v0.11.0
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[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking piston2d-graphics v0.28.0
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[INFO] [stderr]     Checking sdl2 v0.31.0
[INFO] [stderr]     Checking backtrace v0.3.43
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking jpeg-decoder v0.1.18
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.20.1
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking piston2d-opengl_graphics v0.57.0
[INFO] [stderr]     Checking pistoncore-input v0.23.0
[INFO] [stderr]     Checking pistoncore-window v0.34.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.39.0
[INFO] [stderr]     Checking pistoncore-sdl2_window v0.52.0
[INFO] [stderr]     Checking piston v0.39.0
[INFO] [stderr]     Checking sorting-visualization v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self::$id::$type`
[INFO] [stdout]   --> src/algorithms/mod.rs:25:15
[INFO] [stdout]    |
[INFO] [stdout] 25 |         pub use self::$id::$type;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 | / algorithms![
[INFO] [stdout] 40 | |   bubble => BubbleSort,
[INFO] [stdout] 41 | |   cocktail => CocktailSort,
[INFO] [stdout] 42 | |   cycle => CycleSort,
[INFO] [stdout] ...  |
[INFO] [stdout] 50 | |   all => All,
[INFO] [stdout] 51 | | ];
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `algorithms` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self::$id::$type`
[INFO] [stdout]   --> src/algorithms/mod.rs:25:15
[INFO] [stdout]    |
[INFO] [stdout] 25 |         pub use self::$id::$type;
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 39 | / algorithms![
[INFO] [stdout] 40 | |   bubble => BubbleSort,
[INFO] [stdout] 41 | |   cocktail => CocktailSort,
[INFO] [stdout] 42 | |   cycle => CycleSort,
[INFO] [stdout] ...  |
[INFO] [stdout] 50 | |   all => All,
[INFO] [stdout] 51 | | ];
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `algorithms` (in Nightly builds, run with -Z macro-backtrace for more info)
[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 15.63s
[INFO] running `Command { std: "docker" "inspect" "616a3f7dd7694fb08ea621f73946b2fe3b52b10cea4cc2cca68d141b93cb367e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "616a3f7dd7694fb08ea621f73946b2fe3b52b10cea4cc2cca68d141b93cb367e", kill_on_drop: false }`
[INFO] [stdout] 616a3f7dd7694fb08ea621f73946b2fe3b52b10cea4cc2cca68d141b93cb367e