[INFO] fetching crate nails 0.12.0...
[INFO] testing nails-0.12.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate nails 0.12.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate nails 0.12.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nails 0.12.0
[INFO] finished tweaking crates.io crate nails 0.12.0
[INFO] tweaked toml for crates.io crate nails 0.12.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0654dae7fb327b7d81cddd79c22bdaad7ceeb4e40b7d91da4ee0011e8d3d608
[INFO] running `Command { std: "docker" "start" "-a" "e0654dae7fb327b7d81cddd79c22bdaad7ceeb4e40b7d91da4ee0011e8d3d608", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0654dae7fb327b7d81cddd79c22bdaad7ceeb4e40b7d91da4ee0011e8d3d608", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0654dae7fb327b7d81cddd79c22bdaad7ceeb4e40b7d91da4ee0011e8d3d608", kill_on_drop: false }`
[INFO] [stdout] e0654dae7fb327b7d81cddd79c22bdaad7ceeb4e40b7d91da4ee0011e8d3d608
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9cb3a3c0441567cb07d6fd90d166e850aa38ca814b5518ff9109f9866dab6fd3
[INFO] running `Command { std: "docker" "start" "-a" "9cb3a3c0441567cb07d6fd90d166e850aa38ca814b5518ff9109f9866dab6fd3", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]    Compiling tokio-util v0.6.8
[INFO] [stderr]    Compiling futures-executor v0.3.17
[INFO] [stderr]    Compiling futures v0.3.17
[INFO] [stderr]    Compiling nails v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.43s
[INFO] running `Command { std: "docker" "inspect" "9cb3a3c0441567cb07d6fd90d166e850aa38ca814b5518ff9109f9866dab6fd3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cb3a3c0441567cb07d6fd90d166e850aa38ca814b5518ff9109f9866dab6fd3", kill_on_drop: false }`
[INFO] [stdout] 9cb3a3c0441567cb07d6fd90d166e850aa38ca814b5518ff9109f9866dab6fd3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 739b7007a7b327bbf536c62e4d17b538c9426fbb255386b27a34f696cf1d451e
[INFO] running `Command { std: "docker" "start" "-a" "739b7007a7b327bbf536c62e4d17b538c9426fbb255386b27a34f696cf1d451e", kill_on_drop: false }`
[INFO] [stderr]    Compiling nails v0.12.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.47s
[INFO] running `Command { std: "docker" "inspect" "739b7007a7b327bbf536c62e4d17b538c9426fbb255386b27a34f696cf1d451e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "739b7007a7b327bbf536c62e4d17b538c9426fbb255386b27a34f696cf1d451e", kill_on_drop: false }`
[INFO] [stdout] 739b7007a7b327bbf536c62e4d17b538c9426fbb255386b27a34f696cf1d451e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 90bc4c8a7b0a0e861b7ef5ccfe9bfc8b814e604ac9e73bbe1d5c4061baabbfd9
[INFO] running `Command { std: "docker" "start" "-a" "90bc4c8a7b0a0e861b7ef5ccfe9bfc8b814e604ac9e73bbe1d5c4061baabbfd9", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 6 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/nails-1d1f149f42aba076)
[INFO] [stdout] test tests::roundtrip_echo ... ok
[INFO] [stdout] test tests::roundtrip_cancellation ... ok
[INFO] [stdout] test codec::tests::roundtrip_chunks ... ok
[INFO] [stdout] test tests::roundtrip_noop ... ok
[INFO] [stdout] test tests::roundtrip_heartbeat_failure ... ok
[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; finished in 0.41s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests nails
[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; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "90bc4c8a7b0a0e861b7ef5ccfe9bfc8b814e604ac9e73bbe1d5c4061baabbfd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90bc4c8a7b0a0e861b7ef5ccfe9bfc8b814e604ac9e73bbe1d5c4061baabbfd9", kill_on_drop: false }`
[INFO] [stdout] 90bc4c8a7b0a0e861b7ef5ccfe9bfc8b814e604ac9e73bbe1d5c4061baabbfd9