[INFO] cloning repository https://github.com/gereeter/dither
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gereeter/dither" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgereeter%2Fdither"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgereeter%2Fdither'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 198cedce34b1dff1e33d5595e5f66fb1f299ba7d
[INFO] checking gereeter/dither against master#914adf04af1c1a984707f778da3d04590c03d144 for pr-72331
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgereeter%2Fdither" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gereeter/dither on toolchain 914adf04af1c1a984707f778da3d04590c03d144
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/gereeter/dither
[INFO] finished tweaking git repo https://github.com/gereeter/dither
[INFO] tweaked toml for git repo https://github.com/gereeter/dither written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/gereeter/dither already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+914adf04af1c1a984707f778da3d04590c03d144" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+914adf04af1c1a984707f778da3d04590c03d144" "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] d0d5e13f1c7a1f3aa69fe77383f6dd677a224446782a8e900f6dea7b4ea8977e
[INFO] running `"docker" "start" "-a" "d0d5e13f1c7a1f3aa69fe77383f6dd677a224446782a8e900f6dea7b4ea8977e"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.50
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling syn v0.15.29
[INFO] [stderr]    Compiling num-iter v0.1.37
[INFO] [stderr]    Compiling num-derive v0.2.4
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking adler32 v1.0.3
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking gif v0.10.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking deflate v0.7.19
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking png v0.14.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.15
[INFO] [stderr]     Checking tiff v0.2.2
[INFO] [stderr]     Checking image v0.21.0
[INFO] [stderr]     Checking dither v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable `diff_H_adj` should have a snake case name
[INFO] [stderr]    --> src/color.rs:236:13
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let diff_H_adj = 2.0 * (c1_adj * c2_adj).sqrt() * (diff_h_adj / 2.0).sin();
[INFO] [stderr]     |             ^^^^^^^^^^ help: convert the identifier to snake case: `diff_h_adj`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable `diff_H_adj` should have a snake case name
[INFO] [stderr]    --> src/color.rs:236:13
[INFO] [stderr]     |
[INFO] [stderr] 236 |         let diff_H_adj = 2.0 * (c1_adj * c2_adj).sqrt() * (diff_h_adj / 2.0).sin();
[INFO] [stderr]     |             ^^^^^^^^^^ help: convert the identifier to snake case: `diff_h_adj`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.56s
[INFO] running `"docker" "inspect" "d0d5e13f1c7a1f3aa69fe77383f6dd677a224446782a8e900f6dea7b4ea8977e"`
[INFO] running `"docker" "rm" "-f" "d0d5e13f1c7a1f3aa69fe77383f6dd677a224446782a8e900f6dea7b4ea8977e"`
[INFO] [stdout] d0d5e13f1c7a1f3aa69fe77383f6dd677a224446782a8e900f6dea7b4ea8977e