[INFO] fetching crate servos 0.0.5...
[INFO] testing servos-0.0.5 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate servos 0.0.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate servos 0.0.5 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate servos 0.0.5
[INFO] finished tweaking crates.io crate servos 0.0.5
[INFO] tweaked toml for crates.io crate servos 0.0.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate servos 0.0.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ca634c2a92796f334843cbea5f9c7c3c9276e05af2e7f9503e7f448586e2de3
[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" "4ca634c2a92796f334843cbea5f9c7c3c9276e05af2e7f9503e7f448586e2de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ca634c2a92796f334843cbea5f9c7c3c9276e05af2e7f9503e7f448586e2de3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ca634c2a92796f334843cbea5f9c7c3c9276e05af2e7f9503e7f448586e2de3", kill_on_drop: false }`
[INFO] [stdout] 4ca634c2a92796f334843cbea5f9c7c3c9276e05af2e7f9503e7f448586e2de3
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3d3a4af5a26492ce5a3b191b9ca93dd0b86004444a35fa299d8625c2390772d
[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" "d3d3a4af5a26492ce5a3b191b9ca93dd0b86004444a35fa299d8625c2390772d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling rppal v0.11.3
[INFO] [stderr]    Compiling servos v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.64s
[INFO] running `Command { std: "docker" "inspect" "d3d3a4af5a26492ce5a3b191b9ca93dd0b86004444a35fa299d8625c2390772d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3d3a4af5a26492ce5a3b191b9ca93dd0b86004444a35fa299d8625c2390772d", kill_on_drop: false }`
[INFO] [stdout] d3d3a4af5a26492ce5a3b191b9ca93dd0b86004444a35fa299d8625c2390772d
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 718182b27d8e90d2f140371a9a11f611f253e0e240fa99fd198f9f6aab9c31b4
[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" "718182b27d8e90d2f140371a9a11f611f253e0e240fa99fd198f9f6aab9c31b4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling servos v0.0.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "718182b27d8e90d2f140371a9a11f611f253e0e240fa99fd198f9f6aab9c31b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "718182b27d8e90d2f140371a9a11f611f253e0e240fa99fd198f9f6aab9c31b4", kill_on_drop: false }`
[INFO] [stdout] 718182b27d8e90d2f140371a9a11f611f253e0e240fa99fd198f9f6aab9c31b4
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 58b6457a713c1097fdfc6e886fe26e3ea42f42842aa08935ff7ec43f7c330f7f
[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" "58b6457a713c1097fdfc6e886fe26e3ea42f42842aa08935ff7ec43f7c330f7f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/servos-c315c607fba950ef
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/servos-a7058fc1cec0e135
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests servos
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "58b6457a713c1097fdfc6e886fe26e3ea42f42842aa08935ff7ec43f7c330f7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "58b6457a713c1097fdfc6e886fe26e3ea42f42842aa08935ff7ec43f7c330f7f", kill_on_drop: false }`
[INFO] [stdout] 58b6457a713c1097fdfc6e886fe26e3ea42f42842aa08935ff7ec43f7c330f7f