[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 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 021ac9cda9c2276021637e60a4bd84bb1ffd2d5f7dd9ad198f0f73f19c0fb8b1
[INFO] running `"docker" "start" "-a" "021ac9cda9c2276021637e60a4bd84bb1ffd2d5f7dd9ad198f0f73f19c0fb8b1"`
[INFO] [stderr]    Compiling usb-device v0.2.1 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "021ac9cda9c2276021637e60a4bd84bb1ffd2d5f7dd9ad198f0f73f19c0fb8b1"`
[INFO] running `"docker" "rm" "-f" "021ac9cda9c2276021637e60a4bd84bb1ffd2d5f7dd9ad198f0f73f19c0fb8b1"`
[INFO] [stdout] 021ac9cda9c2276021637e60a4bd84bb1ffd2d5f7dd9ad198f0f73f19c0fb8b1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 24f5515c7dcad36ee0440df530eb9af72f72feae84cb03f2114780398bcaa58d
[INFO] running `"docker" "start" "-a" "24f5515c7dcad36ee0440df530eb9af72f72feae84cb03f2114780398bcaa58d"`
[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 3.20s
[INFO] running `"docker" "inspect" "24f5515c7dcad36ee0440df530eb9af72f72feae84cb03f2114780398bcaa58d"`
[INFO] running `"docker" "rm" "-f" "24f5515c7dcad36ee0440df530eb9af72f72feae84cb03f2114780398bcaa58d"`
[INFO] [stdout] 24f5515c7dcad36ee0440df530eb9af72f72feae84cb03f2114780398bcaa58d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 29aa2ebe74f5eba3e54b6f45d2951c75f6f056fedae1a4063d221b412714d87e
[INFO] running `"docker" "start" "-a" "29aa2ebe74f5eba3e54b6f45d2951c75f6f056fedae1a4063d221b412714d87e"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/usb_device-1181dda7cd3e7584
[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-63cce6d0bcd09c82
[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" "29aa2ebe74f5eba3e54b6f45d2951c75f6f056fedae1a4063d221b412714d87e"`
[INFO] running `"docker" "rm" "-f" "29aa2ebe74f5eba3e54b6f45d2951c75f6f056fedae1a4063d221b412714d87e"`
[INFO] [stdout] 29aa2ebe74f5eba3e54b6f45d2951c75f6f056fedae1a4063d221b412714d87e