[INFO] crate usb-device 0.2.1 is already in cache
[INFO] extracting crate usb-device 0.2.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/usb-device/0.2.1
[INFO] extracting crate usb-device 0.2.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/usb-device/0.2.1
[INFO] validating manifest of usb-device-0.2.1 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of usb-device-0.2.1 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing usb-device-0.2.1
[INFO] removed 0 missing tests
[INFO] finished frobbing usb-device-0.2.1
[INFO] frobbed toml for usb-device-0.2.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/usb-device/0.2.1/Cargo.toml
[INFO] started frobbing usb-device-0.2.1
[INFO] removed 0 missing tests
[INFO] finished frobbing usb-device-0.2.1
[INFO] frobbed toml for usb-device-0.2.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/usb-device/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing usb-device-0.2.1 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/usb-device/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 94bb20e54bd4d2a0046711185d67c70763646fc42a1288d07e8843f65a6b8966
[INFO] running `"docker" "start" "-a" "94bb20e54bd4d2a0046711185d67c70763646fc42a1288d07e8843f65a6b8966"`
[INFO] [stderr]    Compiling usb-device v0.2.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `"docker" "inspect" "94bb20e54bd4d2a0046711185d67c70763646fc42a1288d07e8843f65a6b8966"`
[INFO] running `"docker" "rm" "-f" "94bb20e54bd4d2a0046711185d67c70763646fc42a1288d07e8843f65a6b8966"`
[INFO] [stdout] 94bb20e54bd4d2a0046711185d67c70763646fc42a1288d07e8843f65a6b8966
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/usb-device/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] e5be5ee3d5e199b4397bb2ac49a2df4e121fb6a5056bda2eaa3af7681583c399
[INFO] running `"docker" "start" "-a" "e5be5ee3d5e199b4397bb2ac49a2df4e121fb6a5056bda2eaa3af7681583c399"`
[INFO] [stderr]    Compiling bit-vec v0.6.1
[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 v0.2.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.29s
[INFO] running `"docker" "inspect" "e5be5ee3d5e199b4397bb2ac49a2df4e121fb6a5056bda2eaa3af7681583c399"`
[INFO] running `"docker" "rm" "-f" "e5be5ee3d5e199b4397bb2ac49a2df4e121fb6a5056bda2eaa3af7681583c399"`
[INFO] [stdout] e5be5ee3d5e199b4397bb2ac49a2df4e121fb6a5056bda2eaa3af7681583c399
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/usb-device/0.2.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 74a67ad9d0cfa7b1a17f3e76833c7bc86ec0a03cf6854f3bd8bc541cac22105a
[INFO] running `"docker" "start" "-a" "74a67ad9d0cfa7b1a17f3e76833c7bc86ec0a03cf6854f3bd8bc541cac22105a"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/usb_device-5ee879a362074bc6
[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] [stderr]      Running /opt/crater/target/debug/deps/test_class_host-0bc3a601ed734862
[INFO] [stdout] test_class_host starting
[INFO] [stdout] looking for 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] [stderr]    Doc-tests usb-device
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/device.rs - device::UsbDevice::poll (line 135) ... ignored
[INFO] [stdout] test src/lib.rs - device (line 130) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "74a67ad9d0cfa7b1a17f3e76833c7bc86ec0a03cf6854f3bd8bc541cac22105a"`
[INFO] running `"docker" "rm" "-f" "74a67ad9d0cfa7b1a17f3e76833c7bc86ec0a03cf6854f3bd8bc541cac22105a"`
[INFO] [stdout] 74a67ad9d0cfa7b1a17f3e76833c7bc86ec0a03cf6854f3bd8bc541cac22105a