[INFO] fetching crate luminance 0.43.1...
[INFO] checking luminance-0.43.1 against beta for pr-78714
[INFO] extracting crate luminance 0.43.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate luminance 0.43.1 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate luminance 0.43.1
[INFO] finished tweaking crates.io crate luminance 0.43.1
[INFO] tweaked toml for crates.io crate luminance 0.43.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6dd97a79bd924fe5891db9064701bfbe1763c4606b050a0e9a62e83a37b80975
[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" "6dd97a79bd924fe5891db9064701bfbe1763c4606b050a0e9a62e83a37b80975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6dd97a79bd924fe5891db9064701bfbe1763c4606b050a0e9a62e83a37b80975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dd97a79bd924fe5891db9064701bfbe1763c4606b050a0e9a62e83a37b80975", kill_on_drop: false }`
[INFO] [stdout] 6dd97a79bd924fe5891db9064701bfbe1763c4606b050a0e9a62e83a37b80975
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "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] 492f4cc78b2e460e988eff7760b85f5e2518affc3669d41dae5c25927417d4bd
[INFO] running `Command { std: "docker" "start" "-a" "492f4cc78b2e460e988eff7760b85f5e2518affc3669d41dae5c25927417d4bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling luminance-derive v0.6.3
[INFO] [stderr]     Checking luminance v0.43.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.42s
[INFO] running `Command { std: "docker" "inspect" "492f4cc78b2e460e988eff7760b85f5e2518affc3669d41dae5c25927417d4bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "492f4cc78b2e460e988eff7760b85f5e2518affc3669d41dae5c25927417d4bd", kill_on_drop: false }`
[INFO] [stdout] 492f4cc78b2e460e988eff7760b85f5e2518affc3669d41dae5c25927417d4bd