[INFO] fetching crate nails 0.11.0...
[INFO] testing nails-0.11.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate nails 0.11.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate nails 0.11.0 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 nails 0.11.0
[INFO] finished tweaking crates.io crate nails 0.11.0
[INFO] tweaked toml for crates.io crate nails 0.11.0 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] [stdout] 5b4e7bfba5d666ae5ed94c528d05fe7b5cc74c99a2dc920d277b429a27af1deb
[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" "5b4e7bfba5d666ae5ed94c528d05fe7b5cc74c99a2dc920d277b429a27af1deb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b4e7bfba5d666ae5ed94c528d05fe7b5cc74c99a2dc920d277b429a27af1deb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b4e7bfba5d666ae5ed94c528d05fe7b5cc74c99a2dc920d277b429a27af1deb", kill_on_drop: false }`
[INFO] [stdout] 5b4e7bfba5d666ae5ed94c528d05fe7b5cc74c99a2dc920d277b429a27af1deb
[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] 0ba1a0651f589b2a39494c869207adbdd6f9278c67192b19b54a55cac65ffa3c
[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" "0ba1a0651f589b2a39494c869207adbdd6f9278c67192b19b54a55cac65ffa3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v0.2.24
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling nails v0.11.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.42s
[INFO] running `Command { std: "docker" "inspect" "0ba1a0651f589b2a39494c869207adbdd6f9278c67192b19b54a55cac65ffa3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ba1a0651f589b2a39494c869207adbdd6f9278c67192b19b54a55cac65ffa3c", kill_on_drop: false }`
[INFO] [stdout] 0ba1a0651f589b2a39494c869207adbdd6f9278c67192b19b54a55cac65ffa3c
[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] 75aa3ffd392710cee84fa012caf50d38aed1750106cfd1c1b9605598e5c26c67
[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" "75aa3ffd392710cee84fa012caf50d38aed1750106cfd1c1b9605598e5c26c67", kill_on_drop: false }`
[INFO] [stderr]    Compiling nails v0.11.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.96s
[INFO] running `Command { std: "docker" "inspect" "75aa3ffd392710cee84fa012caf50d38aed1750106cfd1c1b9605598e5c26c67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75aa3ffd392710cee84fa012caf50d38aed1750106cfd1c1b9605598e5c26c67", kill_on_drop: false }`
[INFO] [stdout] 75aa3ffd392710cee84fa012caf50d38aed1750106cfd1c1b9605598e5c26c67
[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] [stdout] ca75e68de9e39a12bd176bf10797813afa8362cf8ca208db8caffe8d63c8f866
[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" "ca75e68de9e39a12bd176bf10797813afa8362cf8ca208db8caffe8d63c8f866", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/nails-9fc8936b20597d2b
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test codec::tests::roundtrip_chunks ... ok
[INFO] [stdout] test tests::roundtrip_cancellation ... ok
[INFO] [stdout] test tests::roundtrip_noop ... ok
[INFO] [stdout] test tests::roundtrip_echo ... ok
[INFO] [stdout] test tests::roundtrip_heartbeat_failure ... ok
[INFO] [stderr]    Doc-tests nails
[INFO] [stdout] test tests::roundtrip_heartbeat_success ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ca75e68de9e39a12bd176bf10797813afa8362cf8ca208db8caffe8d63c8f866", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca75e68de9e39a12bd176bf10797813afa8362cf8ca208db8caffe8d63c8f866", kill_on_drop: false }`
[INFO] [stdout] ca75e68de9e39a12bd176bf10797813afa8362cf8ca208db8caffe8d63c8f866