[INFO] fetching crate usb-device 0.2.7...
[INFO] testing usb-device-0.2.7 against 1.49.0 for beta-1.50-1
[INFO] extracting crate usb-device 0.2.7 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate usb-device 0.2.7 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 usb-device 0.2.7
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate usb-device 0.2.7
[INFO] tweaked toml for crates.io crate usb-device 0.2.7 written to /workspace/builds/worker-14/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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] bc1d876988b85f2e52fd1ec85235d55c708726ae85a7e22d13401cace91a95d7
[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" "bc1d876988b85f2e52fd1ec85235d55c708726ae85a7e22d13401cace91a95d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc1d876988b85f2e52fd1ec85235d55c708726ae85a7e22d13401cace91a95d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc1d876988b85f2e52fd1ec85235d55c708726ae85a7e22d13401cace91a95d7", kill_on_drop: false }`
[INFO] [stdout] bc1d876988b85f2e52fd1ec85235d55c708726ae85a7e22d13401cace91a95d7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] a14c16e64e10244b0229028389f3788c4b325f3aacc6f2b6b59da6135e63d709
[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" "a14c16e64e10244b0229028389f3788c4b325f3aacc6f2b6b59da6135e63d709", kill_on_drop: false }`
[INFO] [stderr]    Compiling usb-device v0.2.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `Command { std: "docker" "inspect" "a14c16e64e10244b0229028389f3788c4b325f3aacc6f2b6b59da6135e63d709", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a14c16e64e10244b0229028389f3788c4b325f3aacc6f2b6b59da6135e63d709", kill_on_drop: false }`
[INFO] [stdout] a14c16e64e10244b0229028389f3788c4b325f3aacc6f2b6b59da6135e63d709
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 6167072f03b608ecd65fcba9117fafbaa9daf384437c84af2edda42c4c38a4e5
[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" "6167072f03b608ecd65fcba9117fafbaa9daf384437c84af2edda42c4c38a4e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling libusb-sys v0.2.3
[INFO] [stderr]    Compiling bit-set v0.2.0
[INFO] [stderr]    Compiling libusb v0.3.0
[INFO] [stderr]    Compiling usb-device v0.2.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.10s
[INFO] running `Command { std: "docker" "inspect" "6167072f03b608ecd65fcba9117fafbaa9daf384437c84af2edda42c4c38a4e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6167072f03b608ecd65fcba9117fafbaa9daf384437c84af2edda42c4c38a4e5", kill_on_drop: false }`
[INFO] [stdout] 6167072f03b608ecd65fcba9117fafbaa9daf384437c84af2edda42c4c38a4e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 79158ef009fd49f4f8bf603828ca2810c231d8cb1a9e6c1693f0fc10b9814434
[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" "79158ef009fd49f4f8bf603828ca2810c231d8cb1a9e6c1693f0fc10b9814434", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/usb_device-6e8aa766832bc316
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/test_class_host-85f477bc50627e9d
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] test_class_host starting
[INFO] [stdout] looking for device...
[INFO] [stderr]    Doc-tests usb-device
[INFO] [stdout] Did not find a TestClass device. Make sure the device is correctly programmed and plugged in. Last error: No such device (it may have been disconnected)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/device.rs - device::UsbDevice::poll (line 145) ... ignored
[INFO] [stdout] test src/lib.rs - device (line 131) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "79158ef009fd49f4f8bf603828ca2810c231d8cb1a9e6c1693f0fc10b9814434", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79158ef009fd49f4f8bf603828ca2810c231d8cb1a9e6c1693f0fc10b9814434", kill_on_drop: false }`
[INFO] [stdout] 79158ef009fd49f4f8bf603828ca2810c231d8cb1a9e6c1693f0fc10b9814434