[INFO] crate camctl_rs 0.1.2 is already in cache
[INFO] testing camctl_rs-0.1.2 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate camctl_rs 0.1.2 into work/builds/worker-2/source
[INFO] validating manifest of crates.io crate camctl_rs 0.1.2 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 crates.io crate camctl_rs 0.1.2
[INFO] finished tweaking crates.io crate camctl_rs 0.1.2
[INFO] tweaked toml for crates.io crate camctl_rs 0.1.2 written to work/builds/worker-2/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] b52036fdcd45ea3a2d090109c0f402455deff7aa56e137178f5888b4e43e27b3
[INFO] running `"docker" "start" "-a" "b52036fdcd45ea3a2d090109c0f402455deff7aa56e137178f5888b4e43e27b3"`
[INFO] [stderr]    Compiling usb-device v0.2.3
[INFO] [stderr]    Compiling libusb v0.3.0
[INFO] [stderr]    Compiling camctl_rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `"docker" "inspect" "b52036fdcd45ea3a2d090109c0f402455deff7aa56e137178f5888b4e43e27b3"`
[INFO] running `"docker" "rm" "-f" "b52036fdcd45ea3a2d090109c0f402455deff7aa56e137178f5888b4e43e27b3"`
[INFO] [stdout] b52036fdcd45ea3a2d090109c0f402455deff7aa56e137178f5888b4e43e27b3
[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] f97ba66cd58e618364e33505bb4e220e39163e4a565b75424734b5dbab9468f2
[INFO] running `"docker" "start" "-a" "f97ba66cd58e618364e33505bb4e220e39163e4a565b75424734b5dbab9468f2"`
[INFO] [stderr]    Compiling camctl_rs v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "f97ba66cd58e618364e33505bb4e220e39163e4a565b75424734b5dbab9468f2"`
[INFO] running `"docker" "rm" "-f" "f97ba66cd58e618364e33505bb4e220e39163e4a565b75424734b5dbab9468f2"`
[INFO] [stdout] f97ba66cd58e618364e33505bb4e220e39163e4a565b75424734b5dbab9468f2
[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] d497ab5cf9e4aa07d7460adb445d20139548850cc6d77333aafeab129ec75fa6
[INFO] running `"docker" "start" "-a" "d497ab5cf9e4aa07d7460adb445d20139548850cc6d77333aafeab129ec75fa6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/camctl_rs-0f80bed53b6b8cf7
[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]    Doc-tests camctl_rs
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/cam.rs - cam::Kraken (line 16) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/cam.rs - cam::Kraken (line 16) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `camctl_rs::Kraken`
[INFO] [stdout]  --> src/cam.rs:17:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use camctl_rs::Kraken;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^ no `Kraken` in the root
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]  --> src/cam.rs:19:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | let ctx = libusb::Context::new()?;
[INFO] [stdout]   |           ^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]   = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]  --> src/cam.rs:20:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | let kraken = Kraken::from(&ctx)?;
[INFO] [stdout]   |              ^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]   = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0432.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/cam.rs - cam::Kraken (line 16)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "d497ab5cf9e4aa07d7460adb445d20139548850cc6d77333aafeab129ec75fa6"`
[INFO] running `"docker" "rm" "-f" "d497ab5cf9e4aa07d7460adb445d20139548850cc6d77333aafeab129ec75fa6"`
[INFO] [stdout] d497ab5cf9e4aa07d7460adb445d20139548850cc6d77333aafeab129ec75fa6