[INFO] fetching crate grand_central_m4 0.3.0...
[INFO] checking grand_central_m4-0.3.0 against try#82acd1d76add2232e19c1f0feb250d2a19ec6efe for pr-81213
[INFO] extracting crate grand_central_m4 0.3.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate grand_central_m4 0.3.0 on toolchain 82acd1d76add2232e19c1f0feb250d2a19ec6efe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-13/source/.cargo/config
[INFO] started tweaking crates.io crate grand_central_m4 0.3.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate grand_central_m4 0.3.0
[INFO] tweaked toml for crates.io crate grand_central_m4 0.3.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate crates.io crate grand_central_m4 0.3.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e6ace61b13547c5cffe9a4661bdc422dfd3040faf6c73c0851473b7b83dd84d
[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" "6e6ace61b13547c5cffe9a4661bdc422dfd3040faf6c73c0851473b7b83dd84d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e6ace61b13547c5cffe9a4661bdc422dfd3040faf6c73c0851473b7b83dd84d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e6ace61b13547c5cffe9a4661bdc422dfd3040faf6c73c0851473b7b83dd84d", kill_on_drop: false }`
[INFO] [stdout] 6e6ace61b13547c5cffe9a4661bdc422dfd3040faf6c73c0851473b7b83dd84d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4a2e902c481669f65af3dff62ff238be8f616b1de9f7b277803215459cd61f6
[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" "f4a2e902c481669f65af3dff62ff238be8f616b1de9f7b277803215459cd61f6", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling atsamd51p v0.9.0
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling cortex-m v0.5.10
[INFO] [stderr]    Compiling heapless v0.5.6
[INFO] [stderr]     Checking aligned v0.2.0
[INFO] [stderr]    Compiling grand_central_m4 v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rtic-core v0.3.1
[INFO] [stderr]     Checking jlink_rtt v0.1.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling cortex-m-rtic v0.5.5
[INFO] [stderr]     Checking embedded-hal v0.2.4
[INFO] [stderr]     Checking ws2812-timer-delay v0.3.0
[INFO] [stderr]     Checking panic_rtt v0.2.0
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]    Compiling rtic-syntax v0.4.0
[INFO] [stderr]    Compiling cortex-m-rtic-macros v0.5.2
[INFO] [stderr]     Checking atsamd-hal v0.12.0
[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 `grand_central_m4`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f4a2e902c481669f65af3dff62ff238be8f616b1de9f7b277803215459cd61f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4a2e902c481669f65af3dff62ff238be8f616b1de9f7b277803215459cd61f6", kill_on_drop: false }`
[INFO] [stdout] f4a2e902c481669f65af3dff62ff238be8f616b1de9f7b277803215459cd61f6