[INFO] cloning repository https://github.com/benschinn/img-catechesis
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/benschinn/img-catechesis" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenschinn%2Fimg-catechesis", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenschinn%2Fimg-catechesis'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b1885f6c10f7f8e69c7e54aa0e6f895652e59d7
[INFO] checking benschinn/img-catechesis against master#21de280cccb4eb02ead6bf0af40e2355a9136d6f for pr-100043-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbenschinn%2Fimg-catechesis" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/benschinn/img-catechesis on toolchain 21de280cccb4eb02ead6bf0af40e2355a9136d6f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+21de280cccb4eb02ead6bf0af40e2355a9136d6f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/benschinn/img-catechesis
[INFO] finished tweaking git repo https://github.com/benschinn/img-catechesis
[INFO] tweaked toml for git repo https://github.com/benschinn/img-catechesis written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/benschinn/img-catechesis already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+21de280cccb4eb02ead6bf0af40e2355a9136d6f" "fetch" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded color-convert v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+21de280cccb4eb02ead6bf0af40e2355a9136d6f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6ea6cd671fbeea8a820e652371936cd03507a3dd5116f3d28d8fad11ff40e98d
[INFO] running `Command { std: "docker" "start" "-a" "6ea6cd671fbeea8a820e652371936cd03507a3dd5116f3d28d8fad11ff40e98d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ea6cd671fbeea8a820e652371936cd03507a3dd5116f3d28d8fad11ff40e98d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ea6cd671fbeea8a820e652371936cd03507a3dd5116f3d28d8fad11ff40e98d", kill_on_drop: false }`
[INFO] [stdout] 6ea6cd671fbeea8a820e652371936cd03507a3dd5116f3d28d8fad11ff40e98d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+21de280cccb4eb02ead6bf0af40e2355a9136d6f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 860a92c003e1ae480656a971dd77be231ee84268e8434be2e3ae009533b6b7c0
[INFO] running `Command { std: "docker" "start" "-a" "860a92c003e1ae480656a971dd77be231ee84268e8434be2e3ae009533b6b7c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling rayon-core v1.6.1
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking color_quant v1.0.1
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[INFO] [stderr]    Compiling rustc_version v0.2.3
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[INFO] [stderr]     Checking crossbeam-queue v0.2.0
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[INFO] [stderr]     Checking serde_json v1.0.44
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[INFO] [stderr]     Checking img-catechesis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `GenericImageView`
[INFO] [stdout]  --> src/main.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | use image::{GenericImage, GenericImageView, ImageBuffer, RgbImage};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GenericImage`
[INFO] [stdout]  --> src/main.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use image::{GenericImage, GenericImageView, ImageBuffer, RgbImage};
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:19:55
[INFO] [stdout]    |
[INFO] [stdout] 19 |      let mut img = ImageBuffer::from_fn(512, 512, |x, y| {
[INFO] [stdout]    |                                                       ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `colors`
[INFO] [stdout]   --> src/main.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |      let colors = json.get("Color")
[INFO] [stdout]    |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_colors`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `img`
[INFO] [stdout]   --> src/main.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 |      let img: RgbImage = ImageBuffer::new(512, 512);
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_img`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]   --> src/main.rs:28:11
[INFO] [stdout]    |
[INFO] [stdout] 28 |      let (width, height) = img.dimensions();
[INFO] [stdout]    |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]   --> src/main.rs:28:18
[INFO] [stdout]    |
[INFO] [stdout] 28 |      let (width, height) = img.dimensions();
[INFO] [stdout]    |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pixel`
[INFO] [stdout]   --> src/main.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |      let pixel = img[(100, 100)];
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_pixel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GenericImageView`
[INFO] [stdout]  --> src/main.rs:4:27
[INFO] [stdout]   |
[INFO] [stdout] 4 | use image::{GenericImage, GenericImageView, ImageBuffer, RgbImage};
[INFO] [stdout]   |                           ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `GenericImage`
[INFO] [stdout]  --> src/main.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | use image::{GenericImage, GenericImageView, ImageBuffer, RgbImage};
[INFO] [stdout]   |             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:19:55
[INFO] [stdout]    |
[INFO] [stdout] 19 |      let mut img = ImageBuffer::from_fn(512, 512, |x, y| {
[INFO] [stdout]    |                                                       ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `colors`
[INFO] [stdout]   --> src/main.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |      let colors = json.get("Color")
[INFO] [stdout]    |          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_colors`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `img`
[INFO] [stdout]   --> src/main.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 |      let img: RgbImage = ImageBuffer::new(512, 512);
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_img`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `width`
[INFO] [stdout]   --> src/main.rs:28:11
[INFO] [stdout]    |
[INFO] [stdout] 28 |      let (width, height) = img.dimensions();
[INFO] [stdout]    |           ^^^^^ help: if this is intentional, prefix it with an underscore: `_width`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `height`
[INFO] [stdout]   --> src/main.rs:28:18
[INFO] [stdout]    |
[INFO] [stdout] 28 |      let (width, height) = img.dimensions();
[INFO] [stdout]    |                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_height`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pixel`
[INFO] [stdout]   --> src/main.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |      let pixel = img[(100, 100)];
[INFO] [stdout]    |          ^^^^^ help: if this is intentional, prefix it with an underscore: `_pixel`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.12s
[INFO] running `Command { std: "docker" "inspect" "860a92c003e1ae480656a971dd77be231ee84268e8434be2e3ae009533b6b7c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "860a92c003e1ae480656a971dd77be231ee84268e8434be2e3ae009533b6b7c0", kill_on_drop: false }`
[INFO] [stdout] 860a92c003e1ae480656a971dd77be231ee84268e8434be2e3ae009533b6b7c0