[INFO] crate feather_m4 0.3.0 is already in cache
[INFO] checking feather_m4-0.3.0 against master#9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7 for pr-64564
[INFO] extracting crate feather_m4 0.3.0 into work/builds/worker-1/source
[INFO] validating manifest of crates.io crate feather_m4 0.3.0 on toolchain 9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate feather_m4 0.3.0
[INFO] finished tweaking crates.io crate feather_m4 0.3.0
[INFO] tweaked toml for crates.io crate feather_m4 0.3.0 written to work/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate feather_m4 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+9b9d2aff8de4d499b4ba7ca406e000f8d3754ea7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] afc6b91db383d65f9c0850f98bb34a16abd7930c97268bab6d601830126a9090
[INFO] running `"docker" "start" "-a" "afc6b91db383d65f9c0850f98bb34a16abd7930c97268bab6d601830126a9090"`
[INFO] [stderr]    Compiling atsamd51j19a v0.6.0
[INFO] [stderr]    Compiling feather_m4 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking atsamd-hal v0.7.0
[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 `feather_m4`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "afc6b91db383d65f9c0850f98bb34a16abd7930c97268bab6d601830126a9090"`
[INFO] running `"docker" "rm" "-f" "afc6b91db383d65f9c0850f98bb34a16abd7930c97268bab6d601830126a9090"`
[INFO] [stdout] afc6b91db383d65f9c0850f98bb34a16abd7930c97268bab6d601830126a9090