[INFO] fetching crate median_three_quicksort 0.0.1...
[INFO] building median_three_quicksort-0.0.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate median_three_quicksort 0.0.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate median_three_quicksort 0.0.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate median_three_quicksort 0.0.1
[INFO] finished tweaking crates.io crate median_three_quicksort 0.0.1
[INFO] tweaked toml for crates.io crate median_three_quicksort 0.0.1 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 592974d710cbab9e79f70eaede956bce3c77628c828296e7895d43c37f8ffaac
[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" "592974d710cbab9e79f70eaede956bce3c77628c828296e7895d43c37f8ffaac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "592974d710cbab9e79f70eaede956bce3c77628c828296e7895d43c37f8ffaac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "592974d710cbab9e79f70eaede956bce3c77628c828296e7895d43c37f8ffaac", kill_on_drop: false }`
[INFO] [stdout] 592974d710cbab9e79f70eaede956bce3c77628c828296e7895d43c37f8ffaac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--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] c053f7c85d2d59f59ccda19dda41bd4b7dcb842db9602361da9bab58b0148fa9
[INFO] running `Command { std: "docker" "start" "-a" "c053f7c85d2d59f59ccda19dda41bd4b7dcb842db9602361da9bab58b0148fa9", kill_on_drop: false }`
[INFO] [stderr]    Compiling median_three_quicksort v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "c053f7c85d2d59f59ccda19dda41bd4b7dcb842db9602361da9bab58b0148fa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c053f7c85d2d59f59ccda19dda41bd4b7dcb842db9602361da9bab58b0148fa9", kill_on_drop: false }`
[INFO] [stdout] c053f7c85d2d59f59ccda19dda41bd4b7dcb842db9602361da9bab58b0148fa9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] d8f5915692d140863cf6b70eface0ee65739b4616d8c75ccd81deb2adc860dd9
[INFO] running `Command { std: "docker" "start" "-a" "d8f5915692d140863cf6b70eface0ee65739b4616d8c75ccd81deb2adc860dd9", kill_on_drop: false }`
[INFO] [stderr]    Compiling median_three_quicksort v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "d8f5915692d140863cf6b70eface0ee65739b4616d8c75ccd81deb2adc860dd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8f5915692d140863cf6b70eface0ee65739b4616d8c75ccd81deb2adc860dd9", kill_on_drop: false }`
[INFO] [stdout] d8f5915692d140863cf6b70eface0ee65739b4616d8c75ccd81deb2adc860dd9