[INFO] fetching crate imagequant 2.13.0...
[INFO] checking imagequant-2.13.0 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate imagequant 2.13.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate imagequant 2.13.0 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate imagequant 2.13.0
[INFO] finished tweaking crates.io crate imagequant 2.13.0
[INFO] tweaked toml for crates.io crate imagequant 2.13.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate imagequant 2.13.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79f6e897009f629e7a66955739c3c71fab03785076f8d375a5979ccf24e67c8e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "79f6e897009f629e7a66955739c3c71fab03785076f8d375a5979ccf24e67c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79f6e897009f629e7a66955739c3c71fab03785076f8d375a5979ccf24e67c8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79f6e897009f629e7a66955739c3c71fab03785076f8d375a5979ccf24e67c8e", kill_on_drop: false }`
[INFO] [stdout] 79f6e897009f629e7a66955739c3c71fab03785076f8d375a5979ccf24e67c8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 06ae154ddccec51286a78f6e722aba630b68407c55d5637403ce609acddf097f
[INFO] running `Command { std: "docker" "start" "-a" "06ae154ddccec51286a78f6e722aba630b68407c55d5637403ce609acddf097f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]     Checking rgb v0.8.25
[INFO] [stderr]    Compiling imagequant-sys v2.13.0
[INFO] [stderr]     Checking imagequant v2.13.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:444:41
[INFO] [stdout]     |
[INFO] [stdout] 444 |     struct RGBA {r:u8, g:u8, b:u8, a:u8};
[INFO] [stdout]     |                                         ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lib.rs:456:34
[INFO] [stdout]     |
[INFO] [stdout] 456 |     struct RGB {r:u8, g:u8, b:u8};
[INFO] [stdout]     |                                  ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.02s
[INFO] running `Command { std: "docker" "inspect" "06ae154ddccec51286a78f6e722aba630b68407c55d5637403ce609acddf097f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06ae154ddccec51286a78f6e722aba630b68407c55d5637403ce609acddf097f", kill_on_drop: false }`
[INFO] [stdout] 06ae154ddccec51286a78f6e722aba630b68407c55d5637403ce609acddf097f