[INFO] fetching crate xiao_m0 0.9.0...
[INFO] checking xiao_m0-0.9.0 against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] extracting crate xiao_m0 0.9.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate xiao_m0 0.9.0 on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-0/source/.cargo/config
[INFO] started tweaking crates.io crate xiao_m0 0.9.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate xiao_m0 0.9.0
[INFO] tweaked toml for crates.io crate xiao_m0 0.9.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate xiao_m0 0.9.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7fcb1f0078d2b47aae8cca8c56ad692917538398d204aab04454701fc45d98ee
[INFO] running `Command { std: "docker" "start" "-a" "7fcb1f0078d2b47aae8cca8c56ad692917538398d204aab04454701fc45d98ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7fcb1f0078d2b47aae8cca8c56ad692917538398d204aab04454701fc45d98ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7fcb1f0078d2b47aae8cca8c56ad692917538398d204aab04454701fc45d98ee", kill_on_drop: false }`
[INFO] [stdout] 7fcb1f0078d2b47aae8cca8c56ad692917538398d204aab04454701fc45d98ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 903f4816569b57fb019e2e5f4d5e2848f4ef2de633bebc2abad6abdfc86232da
[INFO] running `Command { std: "docker" "start" "-a" "903f4816569b57fb019e2e5f4d5e2848f4ef2de633bebc2abad6abdfc86232da", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]    Compiling atsamd21g v0.9.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking as-slice v0.1.4
[INFO] [stderr]     Checking aligned v0.3.4
[INFO] [stderr]     Checking cortex-m v0.6.4
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]     Checking cortex-m-rt v0.6.13
[INFO] [stderr]     Checking atsamd-hal v0.12.0
[INFO] [stderr]     Checking xiao_m0 v0.9.0 (/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 `xiao_m0`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "903f4816569b57fb019e2e5f4d5e2848f4ef2de633bebc2abad6abdfc86232da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "903f4816569b57fb019e2e5f4d5e2848f4ef2de633bebc2abad6abdfc86232da", kill_on_drop: false }`
[INFO] [stdout] 903f4816569b57fb019e2e5f4d5e2848f4ef2de633bebc2abad6abdfc86232da