[INFO] fetching crate samd21_mini 0.8.0...
[INFO] testing samd21_mini-0.8.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate samd21_mini 0.8.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate samd21_mini 0.8.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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 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-0/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" "+beta-2021-09-08" "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/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eea3392086ecd1d78136743f91f8f75f2321f0feaacd31087cffdf111cf1f8e9
[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" "eea3392086ecd1d78136743f91f8f75f2321f0feaacd31087cffdf111cf1f8e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eea3392086ecd1d78136743f91f8f75f2321f0feaacd31087cffdf111cf1f8e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eea3392086ecd1d78136743f91f8f75f2321f0feaacd31087cffdf111cf1f8e9", kill_on_drop: false }`
[INFO] [stdout] eea3392086ecd1d78136743f91f8f75f2321f0feaacd31087cffdf111cf1f8e9
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ebf06da34e58b55f411f9bac0b9e7b33a23f294d1949ac0df43a52c2262bb85
[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" "7ebf06da34e58b55f411f9bac0b9e7b33a23f294d1949ac0df43a52c2262bb85", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling cortex-m v0.6.4
[INFO] [stderr]    Compiling atsamd21g v0.9.0
[INFO] [stderr]    Compiling paste v1.0.4
[INFO] [stderr]    Compiling embedded-hal v0.2.4
[INFO] [stderr]    Compiling aligned v0.3.4
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]    Compiling cortex-m-rt v0.6.13
[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 21.43s
[INFO] running `Command { std: "docker" "inspect" "7ebf06da34e58b55f411f9bac0b9e7b33a23f294d1949ac0df43a52c2262bb85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ebf06da34e58b55f411f9bac0b9e7b33a23f294d1949ac0df43a52c2262bb85", kill_on_drop: false }`
[INFO] [stdout] 7ebf06da34e58b55f411f9bac0b9e7b33a23f294d1949ac0df43a52c2262bb85
[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=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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c1df35cae7c606c8e52186956a4cc19b5549d934a72fa3f71ab64834ae76cf0f
[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" "c1df35cae7c606c8e52186956a4cc19b5549d934a72fa3f71ab64834ae76cf0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.7
[INFO] [stderr]    Compiling rtic-core v0.3.1
[INFO] [stderr]    Compiling cortex-m-rtic v0.5.5
[INFO] [stderr]    Compiling rtic-syntax v0.4.0
[INFO] [stderr]    Compiling heapless v0.5.6
[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` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "c1df35cae7c606c8e52186956a4cc19b5549d934a72fa3f71ab64834ae76cf0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c1df35cae7c606c8e52186956a4cc19b5549d934a72fa3f71ab64834ae76cf0f", kill_on_drop: false }`
[INFO] [stdout] c1df35cae7c606c8e52186956a4cc19b5549d934a72fa3f71ab64834ae76cf0f