[INFO] crate arduino_mkrzero 0.3.0 is already in cache
[INFO] extracting crate arduino_mkrzero 0.3.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/arduino_mkrzero/0.3.0
[INFO] extracting crate arduino_mkrzero 0.3.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/arduino_mkrzero/0.3.0
[INFO] validating manifest of arduino_mkrzero-0.3.0 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 arduino_mkrzero-0.3.0 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 arduino_mkrzero-0.3.0
[INFO] finished frobbing arduino_mkrzero-0.3.0
[INFO] frobbed toml for arduino_mkrzero-0.3.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/arduino_mkrzero/0.3.0/Cargo.toml
[INFO] started frobbing arduino_mkrzero-0.3.0
[INFO] finished frobbing arduino_mkrzero-0.3.0
[INFO] frobbed toml for arduino_mkrzero-0.3.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/arduino_mkrzero/0.3.0/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] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing arduino_mkrzero-0.3.0 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-5/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/arduino_mkrzero/0.3.0:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 463f33552db69924521b37c4a9787a600e2fd3a4dd71d32e3b91a135328ccaa9
[INFO] running `"docker" "start" "-a" "463f33552db69924521b37c4a9787a600e2fd3a4dd71d32e3b91a135328ccaa9"`
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling cortex-m-rt v0.6.10
[INFO] [stderr]    Compiling atsamd21g18a v0.4.0
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling arduino_mkrzero v0.3.0 (/opt/crater/workdir)
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.5
[INFO] [stderr]    Compiling proc-macro-hack v0.5.8
[INFO] [stderr]    Compiling paste-impl v0.1.5
[INFO] [stderr]    Compiling paste v0.1.5
[INFO] [stderr]    Compiling atsamd-hal v0.5.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.90s
[INFO] running `"docker" "inspect" "463f33552db69924521b37c4a9787a600e2fd3a4dd71d32e3b91a135328ccaa9"`
[INFO] running `"docker" "rm" "-f" "463f33552db69924521b37c4a9787a600e2fd3a4dd71d32e3b91a135328ccaa9"`
[INFO] [stdout] 463f33552db69924521b37c4a9787a600e2fd3a4dd71d32e3b91a135328ccaa9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/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/arduino_mkrzero/0.3.0:/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" "+beta-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 8354d4b1c11db22c8cb6f5a5d9b2dc7336f098681d6e93068903a68652e6aead
[INFO] running `"docker" "start" "-a" "8354d4b1c11db22c8cb6f5a5d9b2dc7336f098681d6e93068903a68652e6aead"`
[INFO] [stderr]    Compiling arduino_mkrzero v0.3.0 (/opt/crater/workdir)
[INFO] [stderr] error: language item required, but not found: `eh_personality`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'hal::prelude::_embedded_hal_digital_OutputPin::set_high': Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stderr]   --> examples/blinky_basic.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |         led.set_high();
[INFO] [stderr]    |             ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'hal::prelude::_embedded_hal_digital_OutputPin::set_low': Deprecated because the methods cannot return errors. Users should use the traits in digital::v2.
[INFO] [stderr]   --> examples/blinky_basic.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |         led.set_low();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `arduino_mkrzero`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: duplicate lang item in crate `std`: `panic_impl`.
[INFO] [stderr]   |
[INFO] [stderr]   = note: first defined in crate `panic_halt`.
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `arduino_mkrzero`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8354d4b1c11db22c8cb6f5a5d9b2dc7336f098681d6e93068903a68652e6aead"`
[INFO] running `"docker" "rm" "-f" "8354d4b1c11db22c8cb6f5a5d9b2dc7336f098681d6e93068903a68652e6aead"`
[INFO] [stdout] 8354d4b1c11db22c8cb6f5a5d9b2dc7336f098681d6e93068903a68652e6aead