[INFO] crate relay8x 0.1.1 is already in cache
[INFO] extracting crate relay8x 0.1.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/relay8x/0.1.1
[INFO] extracting crate relay8x 0.1.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/relay8x/0.1.1
[INFO] validating manifest of relay8x-0.1.1 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 relay8x-0.1.1 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 relay8x-0.1.1
[INFO] finished frobbing relay8x-0.1.1
[INFO] frobbed toml for relay8x-0.1.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/relay8x/0.1.1/Cargo.toml
[INFO] started frobbing relay8x-0.1.1
[INFO] finished frobbing relay8x-0.1.1
[INFO] frobbed toml for relay8x-0.1.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/relay8x/0.1.1/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 relay8x-0.1.1 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/relay8x/0.1.1:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] a4b8cbec33befa7a10db87eb4101298f03b297288f146159887049a086d4d481
[INFO] running `"docker" "start" "-a" "a4b8cbec33befa7a10db87eb4101298f03b297288f146159887049a086d4d481"`
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling relay8x v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:22:15
[INFO] [stderr]    |
[INFO] [stderr] 22 |     port: Box<SerialPort>,
[INFO] [stderr]    |               ^^^^^^^^^^ help: use `dyn`: `dyn SerialPort`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.54s
[INFO] running `"docker" "inspect" "a4b8cbec33befa7a10db87eb4101298f03b297288f146159887049a086d4d481"`
[INFO] running `"docker" "rm" "-f" "a4b8cbec33befa7a10db87eb4101298f03b297288f146159887049a086d4d481"`
[INFO] [stdout] a4b8cbec33befa7a10db87eb4101298f03b297288f146159887049a086d4d481
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/relay8x/0.1.1:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2c4b383af57cc7f00942a775a832846f2daa8c43e6ea57218f251e71de984491
[INFO] running `"docker" "start" "-a" "2c4b383af57cc7f00942a775a832846f2daa8c43e6ea57218f251e71de984491"`
[INFO] [stderr]    Compiling relay8x v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:22:15
[INFO] [stderr]    |
[INFO] [stderr] 22 |     port: Box<SerialPort>,
[INFO] [stderr]    |               ^^^^^^^^^^ help: use `dyn`: `dyn SerialPort`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]    --> src/lib.rs:331:26
[INFO] [stderr]     |
[INFO] [stderr] 331 |             Relay8x::new(String::from("/dev/ttyUSB0"), 1).expect("Failed to connect to device");
[INFO] [stderr]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |                          |
[INFO] [stderr]     |                          expected &str, found struct `std::string::String`
[INFO] [stderr]     |                          help: consider borrowing here: `&String::from("/dev/ttyUSB0")`
[INFO] [stderr]     |
[INFO] [stderr]     = note: expected type `&str`
[INFO] [stderr]                found type `std::string::String`
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `init_device` found for type `Relay8x` in the current scope
[INFO] [stderr]    --> src/lib.rs:332:35
[INFO] [stderr]     |
[INFO] [stderr] 18  | pub struct Relay8x {
[INFO] [stderr]     | ------------------ method `init_device` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 332 |         let init_response = relay.init_device().expect("Failed to init device");
[INFO] [stderr]     |                                   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0308, E0599.
[INFO] [stderr] For more information about an error, try `rustc --explain E0308`.
[INFO] [stderr] error: Could not compile `relay8x`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "2c4b383af57cc7f00942a775a832846f2daa8c43e6ea57218f251e71de984491"`
[INFO] running `"docker" "rm" "-f" "2c4b383af57cc7f00942a775a832846f2daa8c43e6ea57218f251e71de984491"`
[INFO] [stdout] 2c4b383af57cc7f00942a775a832846f2daa8c43e6ea57218f251e71de984491