[INFO] fetching crate samd21_mini 0.8.0...
[INFO] testing samd21_mini-0.8.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate samd21_mini 0.8.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate samd21_mini 0.8.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-8/source/.cargo/config
[INFO] started tweaking crates.io crate samd21_mini 0.8.0
[INFO] finished tweaking crates.io crate samd21_mini 0.8.0
[INFO] tweaked toml for crates.io crate samd21_mini 0.8.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate samd21_mini 0.8.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ca834443dea16bfee2bd976bcef7cd9cb43fde6b1881ffe53393169517983de
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1ca834443dea16bfee2bd976bcef7cd9cb43fde6b1881ffe53393169517983de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ca834443dea16bfee2bd976bcef7cd9cb43fde6b1881ffe53393169517983de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ca834443dea16bfee2bd976bcef7cd9cb43fde6b1881ffe53393169517983de", kill_on_drop: false }`
[INFO] [stdout] 1ca834443dea16bfee2bd976bcef7cd9cb43fde6b1881ffe53393169517983de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb9a85baf3179cdb874ab9e39f304238e80471efe280259e5d4a2e93a6126720
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fb9a85baf3179cdb874ab9e39f304238e80471efe280259e5d4a2e93a6126720", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling cortex-m v0.6.4
[INFO] [stderr]    Compiling cortex-m-rt v0.6.13
[INFO] [stderr]    Compiling vcell v0.1.2
[INFO] [stderr]    Compiling atsamd21g v0.9.0
[INFO] [stderr]    Compiling r0 v0.2.2
[INFO] [stderr]    Compiling bitfield v0.13.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling paste v1.0.4
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling generic-array v0.13.2
[INFO] [stderr]    Compiling volatile-register v0.2.0
[INFO] [stderr]    Compiling embedded-hal v0.2.4
[INFO] [stderr]    Compiling as-slice v0.1.4
[INFO] [stderr]    Compiling aligned v0.3.4
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]    Compiling atsamd-hal v0.12.0
[INFO] [stderr]    Compiling samd21_mini v0.8.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.06s
[INFO] running `Command { std: "docker" "inspect" "fb9a85baf3179cdb874ab9e39f304238e80471efe280259e5d4a2e93a6126720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb9a85baf3179cdb874ab9e39f304238e80471efe280259e5d4a2e93a6126720", kill_on_drop: false }`
[INFO] [stdout] fb9a85baf3179cdb874ab9e39f304238e80471efe280259e5d4a2e93a6126720
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a395b062aeb4268d77deeadb3f29f625a5c106cd1de63c18772d1bb850291691
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a395b062aeb4268d77deeadb3f29f625a5c106cd1de63c18772d1bb850291691", kill_on_drop: false }`
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]    Compiling rtic-core v0.3.1
[INFO] [stderr]    Compiling panic-halt v0.2.0
[INFO] [stderr]    Compiling cortex-m-rtic v0.5.5
[INFO] [stderr]    Compiling hash32 v0.1.1
[INFO] [stderr]    Compiling rtic-syntax v0.4.0
[INFO] [stderr]    Compiling panic-semihosting v0.5.6
[INFO] [stderr]    Compiling cortex-m-rtic-macros v0.5.2
[INFO] [stderr]    Compiling samd21_mini v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `samd21_mini`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a395b062aeb4268d77deeadb3f29f625a5c106cd1de63c18772d1bb850291691", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a395b062aeb4268d77deeadb3f29f625a5c106cd1de63c18772d1bb850291691", kill_on_drop: false }`
[INFO] [stdout] a395b062aeb4268d77deeadb3f29f625a5c106cd1de63c18772d1bb850291691