[INFO] crate spidriver 0.1.0 is already in cache
[INFO] extracting crate spidriver 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/spidriver/0.1.0
[INFO] extracting crate spidriver 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/spidriver/0.1.0
[INFO] validating manifest of spidriver-0.1.0 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 spidriver-0.1.0 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 spidriver-0.1.0
[INFO] finished frobbing spidriver-0.1.0
[INFO] frobbed toml for spidriver-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/spidriver/0.1.0/Cargo.toml
[INFO] started frobbing spidriver-0.1.0
[INFO] finished frobbing spidriver-0.1.0
[INFO] frobbed toml for spidriver-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/spidriver/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing spidriver-0.1.0 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/spidriver/0.1.0:/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] c326d70bf460663b877a1bc9a6ee196820e5ec6dccc7afbfdc99b2a93f21e953
[INFO] running `"docker" "start" "-a" "c326d70bf460663b877a1bc9a6ee196820e5ec6dccc7afbfdc99b2a93f21e953"`
[INFO] [stderr]    Compiling spidriver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `"docker" "inspect" "c326d70bf460663b877a1bc9a6ee196820e5ec6dccc7afbfdc99b2a93f21e953"`
[INFO] running `"docker" "rm" "-f" "c326d70bf460663b877a1bc9a6ee196820e5ec6dccc7afbfdc99b2a93f21e953"`
[INFO] [stdout] c326d70bf460663b877a1bc9a6ee196820e5ec6dccc7afbfdc99b2a93f21e953
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/spidriver/0.1.0:/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] 139b2660675612c8276b7f4510bbcbb694c65142b54965cde057e6d46b5f8b31
[INFO] running `"docker" "start" "-a" "139b2660675612c8276b7f4510bbcbb694c65142b54965cde057e6d46b5f8b31"`
[INFO] [stderr]    Compiling serial-core v0.4.0
[INFO] [stderr]    Compiling ioctl-rs v0.1.6
[INFO] [stderr]    Compiling serial-unix v0.4.0
[INFO] [stderr]    Compiling serial v0.4.0
[INFO] [stderr]    Compiling serial-embedded-hal v0.1.2
[INFO] [stderr]    Compiling spidriver v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.15s
[INFO] running `"docker" "inspect" "139b2660675612c8276b7f4510bbcbb694c65142b54965cde057e6d46b5f8b31"`
[INFO] running `"docker" "rm" "-f" "139b2660675612c8276b7f4510bbcbb694c65142b54965cde057e6d46b5f8b31"`
[INFO] [stdout] 139b2660675612c8276b7f4510bbcbb694c65142b54965cde057e6d46b5f8b31
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/spidriver/0.1.0:/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] 7b54c7c6ce9a064084ee3011730779a93dbbc0c37f80d5dad8efb2f26cf529bb
[INFO] running `"docker" "start" "-a" "7b54c7c6ce9a064084ee3011730779a93dbbc0c37f80d5dad8efb2f26cf529bb"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/spidriver-0e2681796908f424
[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 spidriver
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 14) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs -  (line 14) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Serial`
[INFO] [stdout]  --> src/lib.rs:15:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | let port = Serial::new(
[INFO] [stdout]   |            ^^^^^^ use of undeclared type or module `Serial`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `SPIDriver`
[INFO] [stdout]   --> src/lib.rs:26:10
[INFO] [stdout]    |
[INFO] [stdout] 14 | let sd = SPIDriver::new(tx, rx);
[INFO] [stdout]    |          ^^^^^^^^^ use of undeclared type or module `SPIDriver`
[INFO] [stdout] 
[INFO] [stdout] error[E0422]: cannot find struct, variant or union type `PortSettings` in this scope
[INFO] [stdout]  --> src/lib.rs:17:6
[INFO] [stdout]   |
[INFO] [stdout] 5 |     &PortSettings {
[INFO] [stdout]   |      ^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] help: possible candidate is found in another module, you can import it into scope
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serial_embedded_hal::PortSettings;
[INFO] [stdout]   |
[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/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 3  |   let port = Serial::new(
[INFO] [stdout]    |  ____________^
[INFO] [stdout] 4  | |     "/dev/ttyUSB0",
[INFO] [stdout] 5  | |     &PortSettings {
[INFO] [stdout] 6  | |         baud_rate: serial_embedded_hal::BaudRate::BaudOther(460800),
[INFO] [stdout] ...  |
[INFO] [stdout] 11 | |     },
[INFO] [stdout] 12 | | )?;
[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 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0422, E0433.
[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/lib.rs -  (line 14)
[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" "7b54c7c6ce9a064084ee3011730779a93dbbc0c37f80d5dad8efb2f26cf529bb"`
[INFO] running `"docker" "rm" "-f" "7b54c7c6ce9a064084ee3011730779a93dbbc0c37f80d5dad8efb2f26cf529bb"`
[INFO] [stdout] 7b54c7c6ce9a064084ee3011730779a93dbbc0c37f80d5dad8efb2f26cf529bb