[INFO] fetching crate colorsys 0.6.7...
[INFO] checking colorsys-0.6.7 against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-2
[INFO] extracting crate colorsys 0.6.7 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate colorsys 0.6.7 on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate colorsys 0.6.7
[INFO] finished tweaking crates.io crate colorsys 0.6.7
[INFO] tweaked toml for crates.io crate colorsys 0.6.7 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c848aff586ad0a13819d0ed0e80d137af8b83bd7a46c2ac7b252a6df72d11c3
[INFO] running `Command { std: "docker" "start" "-a" "0c848aff586ad0a13819d0ed0e80d137af8b83bd7a46c2ac7b252a6df72d11c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c848aff586ad0a13819d0ed0e80d137af8b83bd7a46c2ac7b252a6df72d11c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c848aff586ad0a13819d0ed0e80d137af8b83bd7a46c2ac7b252a6df72d11c3", kill_on_drop: false }`
[INFO] [stdout] 0c848aff586ad0a13819d0ed0e80d137af8b83bd7a46c2ac7b252a6df72d11c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7ab82b46405cd33562a87a4cac81cf330e05d1c7bc85ff11682585563d63d34
[INFO] running `Command { std: "docker" "start" "-a" "c7ab82b46405cd33562a87a4cac81cf330e05d1c7bc85ff11682585563d63d34", kill_on_drop: false }`
[INFO] [stderr]     Checking colorsys v0.6.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rgb/grayscale.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 31 |   let mut vals = &mut rgb.units.list;
[INFO] [stdout]    |       ----^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rgb/grayscale.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 |   let mut vals = &mut rgb.units.list;
[INFO] [stdout]    |       ----^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rgb/grayscale.rs:61:7
[INFO] [stdout]    |
[INFO] [stdout] 61 |   let mut vals = &mut rgb.units.list;
[INFO] [stdout]    |       ----^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rgb/grayscale.rs:31:7
[INFO] [stdout]    |
[INFO] [stdout] 31 |   let mut vals = &mut rgb.units.list;
[INFO] [stdout]    |       ----^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rgb/grayscale.rs:50:7
[INFO] [stdout]    |
[INFO] [stdout] 50 |   let mut vals = &mut rgb.units.list;
[INFO] [stdout]    |       ----^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/rgb/grayscale.rs:61:7
[INFO] [stdout]    |
[INFO] [stdout] 61 |   let mut vals = &mut rgb.units.list;
[INFO] [stdout]    |       ----^^^^
[INFO] [stdout]    |       |
[INFO] [stdout]    |       help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hsla_tuple`
[INFO] [stdout]   --> tests/tst.rs:16:7
[INFO] [stdout]    |
[INFO] [stdout] 16 |   let hsla_tuple: (f64, f64, f64, f64) = Hsl::from(Rgb::from(rgb_arr)).into();
[INFO] [stdout]    |       ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hsla_tuple`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hex`
[INFO] [stdout]   --> tests/tst.rs:19:7
[INFO] [stdout]    |
[INFO] [stdout] 19 |   let hex: String = rgba.to_hex_string();
[INFO] [stdout]    |       ^^^ help: if this is intentional, prefix it with an underscore: `_hex`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "c7ab82b46405cd33562a87a4cac81cf330e05d1c7bc85ff11682585563d63d34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7ab82b46405cd33562a87a4cac81cf330e05d1c7bc85ff11682585563d63d34", kill_on_drop: false }`
[INFO] [stdout] c7ab82b46405cd33562a87a4cac81cf330e05d1c7bc85ff11682585563d63d34