[INFO] updating cached repository adriankumpf/abacom-relay-board
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/adriankumpf/abacom-relay-board
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/adriankumpf/abacom-relay-board" "work/ex/beta-1.38-1/sources/1.37.0/gh/adriankumpf/abacom-relay-board"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/adriankumpf/abacom-relay-board'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/adriankumpf/abacom-relay-board" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/adriankumpf/abacom-relay-board"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/adriankumpf/abacom-relay-board'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 69c517caf8fafbf9b3ffffad684a448fc060d7dd
[INFO] sha for GitHub repo adriankumpf/abacom-relay-board: 69c517caf8fafbf9b3ffffad684a448fc060d7dd
[INFO] validating manifest of adriankumpf/abacom-relay-board on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of adriankumpf/abacom-relay-board on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing adriankumpf/abacom-relay-board
[INFO] finished frobbing adriankumpf/abacom-relay-board
[INFO] frobbed toml for adriankumpf/abacom-relay-board written to work/ex/beta-1.38-1/sources/1.37.0/gh/adriankumpf/abacom-relay-board/Cargo.toml
[INFO] started frobbing adriankumpf/abacom-relay-board
[INFO] finished frobbing adriankumpf/abacom-relay-board
[INFO] frobbed toml for adriankumpf/abacom-relay-board written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/adriankumpf/abacom-relay-board/Cargo.toml
[INFO] crate adriankumpf/abacom-relay-board already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/adriankumpf/abacom-relay-board/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/otavio/libusb-rs`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating git repository `https://github.com/otavio/libusb-rs`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing adriankumpf/abacom-relay-board against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/adriankumpf/abacom-relay-board:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] b124b81d8084b4fd0dbc1fa46249692f52ab313776ad6bd835c4f10a80c4a609
[INFO] running `"docker" "start" "-a" "b124b81d8084b4fd0dbc1fa46249692f52ab313776ad6bd835c4f10a80c4a609"`
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling libusb-sys v0.2.3
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling libusb v0.3.0 (https://github.com/otavio/libusb-rs#8484c35d)
[INFO] [stderr]    Compiling arb v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.50s
[INFO] running `"docker" "inspect" "b124b81d8084b4fd0dbc1fa46249692f52ab313776ad6bd835c4f10a80c4a609"`
[INFO] running `"docker" "rm" "-f" "b124b81d8084b4fd0dbc1fa46249692f52ab313776ad6bd835c4f10a80c4a609"`
[INFO] [stdout] b124b81d8084b4fd0dbc1fa46249692f52ab313776ad6bd835c4f10a80c4a609
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/adriankumpf/abacom-relay-board:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] c4f102a3a6c41cc30be4dd0afc67064be65050483165bb7c3d404828e5846d70
[INFO] running `"docker" "start" "-a" "c4f102a3a6c41cc30be4dd0afc67064be65050483165bb7c3d404828e5846d70"`
[INFO] [stderr]    Compiling arb v0.4.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.88s
[INFO] running `"docker" "inspect" "c4f102a3a6c41cc30be4dd0afc67064be65050483165bb7c3d404828e5846d70"`
[INFO] running `"docker" "rm" "-f" "c4f102a3a6c41cc30be4dd0afc67064be65050483165bb7c3d404828e5846d70"`
[INFO] [stdout] c4f102a3a6c41cc30be4dd0afc67064be65050483165bb7c3d404828e5846d70
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/adriankumpf/abacom-relay-board:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] f427405fe56bdb84c0b591110167b1843f10cffa4489928bec703dfefda34063
[INFO] running `"docker" "start" "-a" "f427405fe56bdb84c0b591110167b1843f10cffa4489928bec703dfefda34063"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/arb-12f47fcc5e67291d
[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 arb
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - reset (line 206) ... FAILED
[INFO] [stdout] test src/lib.rs - set_status (line 185) ... FAILED
[INFO] [stdout] test src/lib.rs - get_status (line 150) ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - reset (line 206) 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/lib.rs:207:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | arb::reset(None)?;
[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 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - set_status (line 185) 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/lib.rs:187:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | arb::set_status(55, true, None)?;
[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 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - reset (line 206)
[INFO] [stdout]     src/lib.rs - set_status (line 185)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `"docker" "inspect" "f427405fe56bdb84c0b591110167b1843f10cffa4489928bec703dfefda34063"`
[INFO] running `"docker" "rm" "-f" "f427405fe56bdb84c0b591110167b1843f10cffa4489928bec703dfefda34063"`
[INFO] [stdout] f427405fe56bdb84c0b591110167b1843f10cffa4489928bec703dfefda34063