[INFO] fetching crate contrast-checker 0.1.1...
[INFO] checking contrast-checker-0.1.1 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate contrast-checker 0.1.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate contrast-checker 0.1.1 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate contrast-checker 0.1.1
[INFO] finished tweaking crates.io crate contrast-checker 0.1.1
[INFO] tweaked toml for crates.io crate contrast-checker 0.1.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate contrast-checker 0.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", 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] 8ebb7e0d9cd40dbdf06eb3a4b69662c103799a3480808c9a81434a2cc74eb459
[INFO] running `Command { std: "docker" "start" "-a" "8ebb7e0d9cd40dbdf06eb3a4b69662c103799a3480808c9a81434a2cc74eb459", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8ebb7e0d9cd40dbdf06eb3a4b69662c103799a3480808c9a81434a2cc74eb459", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8ebb7e0d9cd40dbdf06eb3a4b69662c103799a3480808c9a81434a2cc74eb459", kill_on_drop: false }`
[INFO] [stdout] 8ebb7e0d9cd40dbdf06eb3a4b69662c103799a3480808c9a81434a2cc74eb459
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 713ea9a0edfb498238f9f36e14d44b7b676d396f6dc6360a6100ef21b8a7e143
[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" "713ea9a0edfb498238f9f36e14d44b7b676d396f6dc6360a6100ef21b8a7e143", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking bytemuck v1.4.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking rust-hsluv v0.1.4
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking rgb v0.8.25
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking contrast v0.1.0
[INFO] [stderr]     Checking contrast-checker v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.42s
[INFO] running `Command { std: "docker" "inspect" "713ea9a0edfb498238f9f36e14d44b7b676d396f6dc6360a6100ef21b8a7e143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "713ea9a0edfb498238f9f36e14d44b7b676d396f6dc6360a6100ef21b8a7e143", kill_on_drop: false }`
[INFO] [stdout] 713ea9a0edfb498238f9f36e14d44b7b676d396f6dc6360a6100ef21b8a7e143