[INFO] fetching crate samd21_mini 0.4.0...
[INFO] checking samd21_mini-0.4.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate samd21_mini 0.4.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate samd21_mini 0.4.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate samd21_mini 0.4.0
[INFO] finished tweaking crates.io crate samd21_mini 0.4.0
[INFO] tweaked toml for crates.io crate samd21_mini 0.4.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate samd21_mini 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 97619f9cc0f5e136dee4bf9099683cb5d96894a9273cf822c1f43bdc1cbf9d21
[INFO] running `"docker" "start" "-a" "97619f9cc0f5e136dee4bf9099683cb5d96894a9273cf822c1f43bdc1cbf9d21"`
[INFO] [stderr]    Compiling cortex-m-rt v0.6.10
[INFO] [stderr]    Compiling atsamd21g18a v0.6.0
[INFO] [stderr]    Compiling heapless v0.4.4
[INFO] [stderr]    Compiling cortex-m v0.5.10
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.5
[INFO] [stderr]    Compiling cortex-m-rtfm v0.4.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking bitfield v0.13.2
[INFO] [stderr]     Checking aligned v0.2.0
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking hash32 v0.1.0
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.5
[INFO] [stderr]    Compiling owned-singleton-macros v0.1.0
[INFO] [stderr]    Compiling cortex-m-rtfm-macros v0.4.3
[INFO] [stderr]     Checking panic-semihosting v0.5.3
[INFO] [stderr]     Checking owned-singleton v0.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.9
[INFO] [stderr]    Compiling paste-impl v0.1.6
[INFO] [stderr]     Checking paste v0.1.6
[INFO] [stderr]     Checking atsamd-hal v0.7.0
[INFO] [stderr]     Checking samd21_mini v0.4.0 (/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 `samd21_mini`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "97619f9cc0f5e136dee4bf9099683cb5d96894a9273cf822c1f43bdc1cbf9d21"`
[INFO] running `"docker" "rm" "-f" "97619f9cc0f5e136dee4bf9099683cb5d96894a9273cf822c1f43bdc1cbf9d21"`
[INFO] [stdout] 97619f9cc0f5e136dee4bf9099683cb5d96894a9273cf822c1f43bdc1cbf9d21