[INFO] fetching crate better-sink 0.0.0...
[INFO] testing better-sink-0.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate better-sink 0.0.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate better-sink 0.0.0 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 better-sink 0.0.0
[INFO] finished tweaking crates.io crate better-sink 0.0.0
[INFO] tweaked toml for crates.io crate better-sink 0.0.0 written to /workspace/builds/worker-12/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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 65fea690707ab40546dab925a8959b98c4396a33a7e1524d1b50eee1c232aa70
[INFO] running `Command { std: "docker" "start" "-a" "65fea690707ab40546dab925a8959b98c4396a33a7e1524d1b50eee1c232aa70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65fea690707ab40546dab925a8959b98c4396a33a7e1524d1b50eee1c232aa70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65fea690707ab40546dab925a8959b98c4396a33a7e1524d1b50eee1c232aa70", kill_on_drop: false }`
[INFO] [stdout] 65fea690707ab40546dab925a8959b98c4396a33a7e1524d1b50eee1c232aa70
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stdout] e5eef1b2344ad17261f9fa1b58435796cc697961dc1efd0ccbe3967520cce44d
[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" "e5eef1b2344ad17261f9fa1b58435796cc697961dc1efd0ccbe3967520cce44d", kill_on_drop: false }`
[INFO] [stderr]    Compiling better-sink v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "e5eef1b2344ad17261f9fa1b58435796cc697961dc1efd0ccbe3967520cce44d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5eef1b2344ad17261f9fa1b58435796cc697961dc1efd0ccbe3967520cce44d", kill_on_drop: false }`
[INFO] [stdout] e5eef1b2344ad17261f9fa1b58435796cc697961dc1efd0ccbe3967520cce44d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] cf126971fdf61c3ebe634c9a9c3bfd4bbbd605bf6a2dcc0dd9ca7dd5de0ce3ca
[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" "cf126971fdf61c3ebe634c9a9c3bfd4bbbd605bf6a2dcc0dd9ca7dd5de0ce3ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling better-sink v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.10s
[INFO] running `Command { std: "docker" "inspect" "cf126971fdf61c3ebe634c9a9c3bfd4bbbd605bf6a2dcc0dd9ca7dd5de0ce3ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf126971fdf61c3ebe634c9a9c3bfd4bbbd605bf6a2dcc0dd9ca7dd5de0ce3ca", kill_on_drop: false }`
[INFO] [stdout] cf126971fdf61c3ebe634c9a9c3bfd4bbbd605bf6a2dcc0dd9ca7dd5de0ce3ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2ae648db1b18694d2eb4e7c9dbd38b4941187035b7adb5859af4255734924222
[INFO] running `Command { std: "docker" "start" "-a" "2ae648db1b18694d2eb4e7c9dbd38b4941187035b7adb5859af4255734924222", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/better_sink-b43c301be8967930
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests better-sink
[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" "2ae648db1b18694d2eb4e7c9dbd38b4941187035b7adb5859af4255734924222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ae648db1b18694d2eb4e7c9dbd38b4941187035b7adb5859af4255734924222", kill_on_drop: false }`
[INFO] [stdout] 2ae648db1b18694d2eb4e7c9dbd38b4941187035b7adb5859af4255734924222