[INFO] fetching crate fractal 0.7.1...
[INFO] testing fractal-0.7.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate fractal 0.7.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate fractal 0.7.1 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 fractal 0.7.1
[INFO] finished tweaking crates.io crate fractal 0.7.1
[INFO] tweaked toml for crates.io crate fractal 0.7.1 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4a53fa3db970d13975e750727a81e15efb8d56bdfa82775ba72abc914bd038ea
[INFO] running `Command { std: "docker" "start" "-a" "4a53fa3db970d13975e750727a81e15efb8d56bdfa82775ba72abc914bd038ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a53fa3db970d13975e750727a81e15efb8d56bdfa82775ba72abc914bd038ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a53fa3db970d13975e750727a81e15efb8d56bdfa82775ba72abc914bd038ea", kill_on_drop: false }`
[INFO] [stdout] 4a53fa3db970d13975e750727a81e15efb8d56bdfa82775ba72abc914bd038ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] a9abb0b998068f85957f64d27c2da997136ce95dec1fe1e60f4b18b7a6c4df18
[INFO] running `Command { std: "docker" "start" "-a" "a9abb0b998068f85957f64d27c2da997136ce95dec1fe1e60f4b18b7a6c4df18", kill_on_drop: false }`
[INFO] [stderr]    Compiling random v0.12.2
[INFO] [stderr]    Compiling statistics v0.4.1
[INFO] [stderr]    Compiling special v0.8.1
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling dwt v0.5.2
[INFO] [stderr]    Compiling probability v0.17.0
[INFO] [stderr]    Compiling fractal v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.17s
[INFO] running `Command { std: "docker" "inspect" "a9abb0b998068f85957f64d27c2da997136ce95dec1fe1e60f4b18b7a6c4df18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9abb0b998068f85957f64d27c2da997136ce95dec1fe1e60f4b18b7a6c4df18", kill_on_drop: false }`
[INFO] [stdout] a9abb0b998068f85957f64d27c2da997136ce95dec1fe1e60f4b18b7a6c4df18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] 7584238ca51720dd5ee53fabc65607ba37685d7dab90a1ec2b33eba7430f47ef
[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" "7584238ca51720dd5ee53fabc65607ba37685d7dab90a1ec2b33eba7430f47ef", kill_on_drop: false }`
[INFO] [stderr]    Compiling assert v0.7.4
[INFO] [stderr]    Compiling fractal v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `Command { std: "docker" "inspect" "7584238ca51720dd5ee53fabc65607ba37685d7dab90a1ec2b33eba7430f47ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7584238ca51720dd5ee53fabc65607ba37685d7dab90a1ec2b33eba7430f47ef", kill_on_drop: false }`
[INFO] [stdout] 7584238ca51720dd5ee53fabc65607ba37685d7dab90a1ec2b33eba7430f47ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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", kill_on_drop: false }`
[INFO] [stdout] f68e599e7beb25a6af95edd83e4505f072c6eec67b683c298e8ed29f9e4c3c0f
[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" "f68e599e7beb25a6af95edd83e4505f072c6eec67b683c298e8ed29f9e4c3c0f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/fractal-7bbc4171adbdaccd
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::new ... ok
[INFO] [stdout] test tests::sample ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests fractal
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f68e599e7beb25a6af95edd83e4505f072c6eec67b683c298e8ed29f9e4c3c0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f68e599e7beb25a6af95edd83e4505f072c6eec67b683c298e8ed29f9e4c3c0f", kill_on_drop: false }`
[INFO] [stdout] f68e599e7beb25a6af95edd83e4505f072c6eec67b683c298e8ed29f9e4c3c0f