[INFO] fetching crate arcus 0.1.0...
[INFO] testing arcus-0.1.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate arcus 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate arcus 0.1.0 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 arcus 0.1.0
[INFO] finished tweaking crates.io crate arcus 0.1.0
[INFO] tweaked toml for crates.io crate arcus 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] 0445b9f701f5d45025b14e5b81a7e62d3483526baa395091b5bbe2aeac562101
[INFO] running `Command { std: "docker" "start" "-a" "0445b9f701f5d45025b14e5b81a7e62d3483526baa395091b5bbe2aeac562101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0445b9f701f5d45025b14e5b81a7e62d3483526baa395091b5bbe2aeac562101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0445b9f701f5d45025b14e5b81a7e62d3483526baa395091b5bbe2aeac562101", kill_on_drop: false }`
[INFO] [stdout] 0445b9f701f5d45025b14e5b81a7e62d3483526baa395091b5bbe2aeac562101
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "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] b11cfbcc09d954635f0f1edbc971ae3099deff11fe8ec3a324f73449eb9a2e39
[INFO] running `Command { std: "docker" "start" "-a" "b11cfbcc09d954635f0f1edbc971ae3099deff11fe8ec3a324f73449eb9a2e39", kill_on_drop: false }`
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling arcus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.68s
[INFO] running `Command { std: "docker" "inspect" "b11cfbcc09d954635f0f1edbc971ae3099deff11fe8ec3a324f73449eb9a2e39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b11cfbcc09d954635f0f1edbc971ae3099deff11fe8ec3a324f73449eb9a2e39", kill_on_drop: false }`
[INFO] [stdout] b11cfbcc09d954635f0f1edbc971ae3099deff11fe8ec3a324f73449eb9a2e39
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2317e348cdd3d784de3cbdefc106f5c8981f3176edadc4a1978b7f84f302ebe1
[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" "2317e348cdd3d784de3cbdefc106f5c8981f3176edadc4a1978b7f84f302ebe1", kill_on_drop: false }`
[INFO] [stderr]    Compiling arcus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `Command { std: "docker" "inspect" "2317e348cdd3d784de3cbdefc106f5c8981f3176edadc4a1978b7f84f302ebe1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2317e348cdd3d784de3cbdefc106f5c8981f3176edadc4a1978b7f84f302ebe1", kill_on_drop: false }`
[INFO] [stdout] 2317e348cdd3d784de3cbdefc106f5c8981f3176edadc4a1978b7f84f302ebe1
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c03dbdce310c94c06b7429ef530b599be2d72ce95d0e97f08357ec4078aede38
[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" "c03dbdce310c94c06b7429ef530b599be2d72ce95d0e97f08357ec4078aede38", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/arcus-ea5f4356657a1868
[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" "c03dbdce310c94c06b7429ef530b599be2d72ce95d0e97f08357ec4078aede38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c03dbdce310c94c06b7429ef530b599be2d72ce95d0e97f08357ec4078aede38", kill_on_drop: false }`
[INFO] [stdout] c03dbdce310c94c06b7429ef530b599be2d72ce95d0e97f08357ec4078aede38