[INFO] fetching crate arduino_mkr1000 0.6.0...
[INFO] checking arduino_mkr1000-0.6.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate arduino_mkr1000 0.6.0 into /workspace/builds/worker-0-tc2/source
[INFO] removed /workspace/builds/worker-0-tc2/source/.cargo/config.toml
[INFO] started tweaking crates.io crate arduino_mkr1000 0.6.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate arduino_mkr1000 0.6.0
[INFO] tweaked toml for crates.io crate arduino_mkr1000 0.6.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate arduino_mkr1000 0.6.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate arduino_mkr1000 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d6cc8208184f3dc1252fff5797bec07aa1e8b3164a1bc2ef8f81052ef957c773
[INFO] running `Command { std: "docker" "start" "-a" "d6cc8208184f3dc1252fff5797bec07aa1e8b3164a1bc2ef8f81052ef957c773", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6cc8208184f3dc1252fff5797bec07aa1e8b3164a1bc2ef8f81052ef957c773", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6cc8208184f3dc1252fff5797bec07aa1e8b3164a1bc2ef8f81052ef957c773", kill_on_drop: false }`
[INFO] [stdout] d6cc8208184f3dc1252fff5797bec07aa1e8b3164a1bc2ef8f81052ef957c773
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb80dcb9647728c7e457cbdd61ba9306c98ad98020374f658e468efb57bd8b5f
[INFO] running `Command { std: "docker" "start" "-a" "eb80dcb9647728c7e457cbdd61ba9306c98ad98020374f658e468efb57bd8b5f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m-rt v0.7.5
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling atsamd21g v0.12.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking volatile-register v0.2.2
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling lock_api v0.4.13
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling heapless v0.7.17
[INFO] [stderr]     Checking gcd v2.3.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]     Checking embedded-hal v0.2.7
[INFO] [stderr]     Checking usb-device v0.2.9
[INFO] [stderr]     Checking fugit v0.3.7
[INFO] [stderr]     Checking hash32 v0.2.1
[INFO] [stderr]    Compiling cortex-m-rtic v1.1.4
[INFO] [stderr]    Compiling seq-macro v0.3.6
[INFO] [stderr]    Compiling arduino_mkr1000 v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cortex-m v0.7.7
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]     Checking rtic-monotonic v1.0.0
[INFO] [stderr]     Checking rtic-core v1.0.0
[INFO] [stderr]     Checking usbd-serial v0.1.1
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking cipher v0.3.0
[INFO] [stderr]     Checking panic-semihosting v0.5.6
[INFO] [stderr]     Checking aes v0.7.5
[INFO] [stderr]    Compiling rtic-syntax v1.0.3
[INFO] [stderr]    Compiling modular-bitfield-impl v0.11.2
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.7.5
[INFO] [stderr]    Compiling cortex-m-rtic-macros v1.1.6
[INFO] [stderr]     Checking modular-bitfield v0.11.2
[INFO] [stderr]     Checking atsamd-hal v0.16.0
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `arduino_mkr1000` (example "blinky_basic") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `arduino_mkr1000` (example "usb_logging") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "eb80dcb9647728c7e457cbdd61ba9306c98ad98020374f658e468efb57bd8b5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb80dcb9647728c7e457cbdd61ba9306c98ad98020374f658e468efb57bd8b5f", kill_on_drop: false }`
[INFO] [stdout] eb80dcb9647728c7e457cbdd61ba9306c98ad98020374f658e468efb57bd8b5f