[INFO] crate arduino_mkrzero 0.5.0 is already in cache
[INFO] testing arduino_mkrzero-0.5.0 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate arduino_mkrzero 0.5.0 into work/builds/worker-3/source
[INFO] validating manifest of crates.io crate arduino_mkrzero 0.5.0 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 arduino_mkrzero 0.5.0
[INFO] finished tweaking crates.io crate arduino_mkrzero 0.5.0
[INFO] tweaked toml for crates.io crate arduino_mkrzero 0.5.0 written to work/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate arduino_mkrzero 0.5.0 already has a lockfile, it will not be regenerated
[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-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/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] b15bf6efaaaa7170778f2a7f040e475310a584750338f9ea5f957043c0632e93
[INFO] running `"docker" "start" "-a" "b15bf6efaaaa7170778f2a7f040e475310a584750338f9ea5f957043c0632e93"`
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling vcell v0.1.0
[INFO] [stderr]    Compiling cortex-m-rt v0.6.7
[INFO] [stderr]    Compiling nb v0.1.1
[INFO] [stderr]    Compiling arduino_mkrzero v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling bitfield v0.13.1
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling syn v0.15.27
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling embedded-hal v0.2.3
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling cortex-m v0.6.1
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.5
[INFO] [stderr]    Compiling proc-macro-hack v0.5.4
[INFO] [stderr]    Compiling paste-impl v0.1.4
[INFO] [stderr]    Compiling atsamd21g18a v0.6.0
[INFO] [stderr]    Compiling paste v0.1.4
[INFO] [stderr]    Compiling atsamd-hal v0.7.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.63s
[INFO] running `"docker" "inspect" "b15bf6efaaaa7170778f2a7f040e475310a584750338f9ea5f957043c0632e93"`
[INFO] running `"docker" "rm" "-f" "b15bf6efaaaa7170778f2a7f040e475310a584750338f9ea5f957043c0632e93"`
[INFO] [stdout] b15bf6efaaaa7170778f2a7f040e475310a584750338f9ea5f957043c0632e93
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/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] f6e5d1f00f8fc24465ca58c21eec89999f42c69dd022fc831d6b84ec642530fd
[INFO] running `"docker" "start" "-a" "f6e5d1f00f8fc24465ca58c21eec89999f42c69dd022fc831d6b84ec642530fd"`
[INFO] [stderr]    Compiling arduino_mkrzero v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: language item required, but not found: `eh_personality`
[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" "f6e5d1f00f8fc24465ca58c21eec89999f42c69dd022fc831d6b84ec642530fd"`
[INFO] running `"docker" "rm" "-f" "f6e5d1f00f8fc24465ca58c21eec89999f42c69dd022fc831d6b84ec642530fd"`
[INFO] [stdout] f6e5d1f00f8fc24465ca58c21eec89999f42c69dd022fc831d6b84ec642530fd