[INFO] updating cached repository https://github.com/aidenbenner/rust-fractals
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e76da4257b001fa117b74a43a4f2a64cab4029da
[INFO] checking aidenbenner/rust-fractals against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faidenbenner%2Frust-fractals" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aidenbenner/rust-fractals on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/aidenbenner/rust-fractals
[INFO] finished tweaking git repo https://github.com/aidenbenner/rust-fractals
[INFO] tweaked toml for git repo https://github.com/aidenbenner/rust-fractals written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/aidenbenner/rust-fractals already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b6ce2cfa11dc8862c37c3349e413d28d2e0251df08a1ae7d2f8f9248a536116c
[INFO] running `"docker" "start" "-a" "b6ce2cfa11dc8862c37c3349e413d28d2e0251df08a1ae7d2f8f9248a536116c"`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking image v0.22.1
[INFO] [stderr]     Checking rust_fractals v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `pixel`
[INFO] [stderr]   --> src/main.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 |     for (x, y, pixel) in imgbuf.enumerate_pixels_mut() {
[INFO] [stderr]    |                ^^^^^ help: consider prefixing with an underscore: `_pixel`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/main.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let r = (0.1 * x as f32) as u8;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/main.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let b = (0.2 * y as f32) as u8;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `g`
[INFO] [stderr]   --> src/main.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |         let g = (0.4 * y as f32) as u8;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_g`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `total`
[INFO] [stderr]   --> src/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let total = imgx * imgy;
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_total`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]   --> src/main.rs:38:28
[INFO] [stderr]    |
[INFO] [stderr] 38 |             let image::Rgb(data) = *pixel;
[INFO] [stderr]    |                            ^^^^ help: consider prefixing with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pixel`
[INFO] [stderr]   --> src/main.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 |     for (x, y, pixel) in imgbuf.enumerate_pixels_mut() {
[INFO] [stderr]    |                ^^^^^ help: consider prefixing with an underscore: `_pixel`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/main.rs:15:13
[INFO] [stderr]    |
[INFO] [stderr] 15 |         let r = (0.1 * x as f32) as u8;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/main.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 |         let b = (0.2 * y as f32) as u8;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `g`
[INFO] [stderr]   --> src/main.rs:17:13
[INFO] [stderr]    |
[INFO] [stderr] 17 |         let g = (0.4 * y as f32) as u8;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_g`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `total`
[INFO] [stderr]   --> src/main.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let total = imgx * imgy;
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_total`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `data`
[INFO] [stderr]   --> src/main.rs:38:28
[INFO] [stderr]    |
[INFO] [stderr] 38 |             let image::Rgb(data) = *pixel;
[INFO] [stderr]    |                            ^^^^ help: consider prefixing with an underscore: `_data`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.80s
[INFO] running `"docker" "inspect" "b6ce2cfa11dc8862c37c3349e413d28d2e0251df08a1ae7d2f8f9248a536116c"`
[INFO] running `"docker" "rm" "-f" "b6ce2cfa11dc8862c37c3349e413d28d2e0251df08a1ae7d2f8f9248a536116c"`
[INFO] [stdout] b6ce2cfa11dc8862c37c3349e413d28d2e0251df08a1ae7d2f8f9248a536116c