[INFO] updating cached repository https://github.com/misson20000/transistor-serial-driver
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d540cc8a62779418b9f176defbf846132d486f79
[INFO] testing misson20000/transistor-serial-driver against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmisson20000%2Ftransistor-serial-driver" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/misson20000/transistor-serial-driver on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/misson20000/transistor-serial-driver
[INFO] finished tweaking git repo https://github.com/misson20000/transistor-serial-driver
[INFO] tweaked toml for git repo https://github.com/misson20000/transistor-serial-driver written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/misson20000/transistor-serial-driver already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 2dfd95636ac5e56fa9f1f5f6b76b54a2ebe55d29e1b88780bc5a82b1b41f395b
[INFO] running `"docker" "start" "-a" "2dfd95636ac5e56fa9f1f5f6b76b54a2ebe55d29e1b88780bc5a82b1b41f395b"`
[INFO] [stderr]    Compiling libusb-sys v0.2.3
[INFO] [stderr]    Compiling libusb v0.3.0
[INFO] [stderr]    Compiling serial_driver_output_only v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/main.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 |     for mut device in try!(context.devices()).iter() {
[INFO] [stderr]   |                       ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/main.rs:7:27
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let device_desc = try!(device.device_descriptor());
[INFO] [stderr]   |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     for mut device in try!(context.devices()).iter() {
[INFO] [stderr]   |         ----^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.99s
[INFO] running `"docker" "inspect" "2dfd95636ac5e56fa9f1f5f6b76b54a2ebe55d29e1b88780bc5a82b1b41f395b"`
[INFO] running `"docker" "rm" "-f" "2dfd95636ac5e56fa9f1f5f6b76b54a2ebe55d29e1b88780bc5a82b1b41f395b"`
[INFO] [stdout] 2dfd95636ac5e56fa9f1f5f6b76b54a2ebe55d29e1b88780bc5a82b1b41f395b
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0633dbcaeead888c80fe50caa476382bda8a985535c0e6826b0442a036e4e448
[INFO] running `"docker" "start" "-a" "0633dbcaeead888c80fe50caa476382bda8a985535c0e6826b0442a036e4e448"`
[INFO] [stderr]    Compiling serial_driver_output_only v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/main.rs:6:23
[INFO] [stderr]   |
[INFO] [stderr] 6 |     for mut device in try!(context.devices()).iter() {
[INFO] [stderr]   |                       ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]  --> src/main.rs:7:27
[INFO] [stderr]   |
[INFO] [stderr] 7 |         let device_desc = try!(device.device_descriptor());
[INFO] [stderr]   |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     for mut device in try!(context.devices()).iter() {
[INFO] [stderr]   |         ----^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `"docker" "inspect" "0633dbcaeead888c80fe50caa476382bda8a985535c0e6826b0442a036e4e448"`
[INFO] running `"docker" "rm" "-f" "0633dbcaeead888c80fe50caa476382bda8a985535c0e6826b0442a036e4e448"`
[INFO] [stdout] 0633dbcaeead888c80fe50caa476382bda8a985535c0e6826b0442a036e4e448
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] 577f0c18811453a91e1830cf1e2297989ca708d77999bfa17d86775ae6b07b04
[INFO] running `"docker" "start" "-a" "577f0c18811453a91e1830cf1e2297989ca708d77999bfa17d86775ae6b07b04"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/serial_driver_output_only-bedea933b5f3d292
[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 `"docker" "inspect" "577f0c18811453a91e1830cf1e2297989ca708d77999bfa17d86775ae6b07b04"`
[INFO] running `"docker" "rm" "-f" "577f0c18811453a91e1830cf1e2297989ca708d77999bfa17d86775ae6b07b04"`
[INFO] [stdout] 577f0c18811453a91e1830cf1e2297989ca708d77999bfa17d86775ae6b07b04