[INFO] crate samd21_mini 0.2.0 is already in cache
[INFO] extracting crate samd21_mini 0.2.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/samd21_mini/0.2.0
[INFO] extracting crate samd21_mini 0.2.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/samd21_mini/0.2.0
[INFO] validating manifest of samd21_mini-0.2.0 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 samd21_mini-0.2.0 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 samd21_mini-0.2.0
[INFO] finished frobbing samd21_mini-0.2.0
[INFO] frobbed toml for samd21_mini-0.2.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/samd21_mini/0.2.0/Cargo.toml
[INFO] started frobbing samd21_mini-0.2.0
[INFO] finished frobbing samd21_mini-0.2.0
[INFO] frobbed toml for samd21_mini-0.2.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/samd21_mini/0.2.0/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing samd21_mini-0.2.0 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-0/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/samd21_mini/0.2.0:/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] 4bac987e81863172bbdf31efb9a974a901638db3ff212da96a5e440eead0e9dd
[INFO] running `"docker" "start" "-a" "4bac987e81863172bbdf31efb9a974a901638db3ff212da96a5e440eead0e9dd"`
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling cortex-m-rt v0.6.10
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling atsamd21g18a v0.4.0
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling embedded-hal v0.2.3
[INFO] [stderr]    Compiling proc-macro-hack v0.5.8
[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 paste-impl v0.1.5
[INFO] [stderr]    Compiling paste v0.1.5
[INFO] [stderr]    Compiling atsamd-hal v0.5.0
[INFO] [stderr]    Compiling samd21_mini v0.2.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.31s
[INFO] running `"docker" "inspect" "4bac987e81863172bbdf31efb9a974a901638db3ff212da96a5e440eead0e9dd"`
[INFO] running `"docker" "rm" "-f" "4bac987e81863172bbdf31efb9a974a901638db3ff212da96a5e440eead0e9dd"`
[INFO] [stdout] 4bac987e81863172bbdf31efb9a974a901638db3ff212da96a5e440eead0e9dd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/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/samd21_mini/0.2.0:/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] 439c9c89e7627424e3d28d09a66a3f0399251752091df3d3844891285954d29b
[INFO] running `"docker" "start" "-a" "439c9c89e7627424e3d28d09a66a3f0399251752091df3d3844891285954d29b"`
[INFO] [stderr]    Compiling heapless v0.4.4
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.3
[INFO] [stderr]    Compiling cortex-m-rtfm v0.4.3
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling hash32 v0.1.0
[INFO] [stderr]    Compiling owned-singleton-macros v0.1.0
[INFO] [stderr]    Compiling cortex-m-rtfm-macros v0.4.3
[INFO] [stderr]    Compiling panic-semihosting v0.5.2
[INFO] [stderr]    Compiling owned-singleton v0.1.0
[INFO] [stderr]    Compiling samd21_mini v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] error: language item required, but not found: `eh_personality`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'atsamd21::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/serial.rs:88:26
[INFO] [stderr]    |
[INFO] [stderr] 88 |         resources.RX_LED.set_low();
[INFO] [stderr]    |                          ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'atsamd21::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/serial.rs:91:34
[INFO] [stderr]    |
[INFO] [stderr] 91 |                 resources.RX_LED.set_high();
[INFO] [stderr]    |                                  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'atsamd21::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/serial.rs:97:26
[INFO] [stderr]    |
[INFO] [stderr] 97 |         resources.TX_LED.set_low();
[INFO] [stderr]    |                          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'atsamd21::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/serial.rs:100:34
[INFO] [stderr]     |
[INFO] [stderr] 100 |                 resources.TX_LED.set_high();
[INFO] [stderr]     |                                  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'atsamd21::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/serial.rs:47:13
[INFO] [stderr]    |
[INFO] [stderr] 47 |         led.set_low();
[INFO] [stderr]    |             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'atsamd21::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/serial.rs:76:16
[INFO] [stderr]    |
[INFO] [stderr] 76 |         tx_led.set_high();
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'atsamd21::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/serial.rs:77:16
[INFO] [stderr]    |
[INFO] [stderr] 77 |         rx_led.set_high();
[INFO] [stderr]    |                ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `samd21_mini`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "439c9c89e7627424e3d28d09a66a3f0399251752091df3d3844891285954d29b"`
[INFO] running `"docker" "rm" "-f" "439c9c89e7627424e3d28d09a66a3f0399251752091df3d3844891285954d29b"`
[INFO] [stdout] 439c9c89e7627424e3d28d09a66a3f0399251752091df3d3844891285954d29b