[INFO] cloning repository https://github.com/KodrAus/hifive1-revb-exec
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KodrAus/hifive1-revb-exec" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKodrAus%2Fhifive1-revb-exec", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKodrAus%2Fhifive1-revb-exec'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c8ebbb2f468a6fac78b0113d6b165905853e976a
[INFO] checking KodrAus/hifive1-revb-exec against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKodrAus%2Fhifive1-revb-exec" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KodrAus/hifive1-revb-exec on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] started tweaking git repo https://github.com/KodrAus/hifive1-revb-exec
[INFO] finished tweaking git repo https://github.com/KodrAus/hifive1-revb-exec
[INFO] tweaked toml for git repo https://github.com/KodrAus/hifive1-revb-exec written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/KodrAus/hifive1-revb-exec already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded riscv-rt-macros v0.1.6
[INFO] [stderr]   Downloaded riscv-rt v0.6.2
[INFO] [stderr]   Downloaded riscv v0.5.6
[INFO] [stderr]   Downloaded e310x-hal v0.8.3
[INFO] [stderr]   Downloaded hifive1 v0.8.1
[INFO] [stderr]   Downloaded e310x v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b305b8e1ce46f9b9b69491779a44f4f37dfc6986422cca4f9c736f325a2dec1
[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" "3b305b8e1ce46f9b9b69491779a44f4f37dfc6986422cca4f9c736f325a2dec1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b305b8e1ce46f9b9b69491779a44f4f37dfc6986422cca4f9c736f325a2dec1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b305b8e1ce46f9b9b69491779a44f4f37dfc6986422cca4f9c736f325a2dec1", kill_on_drop: false }`
[INFO] [stdout] 3b305b8e1ce46f9b9b69491779a44f4f37dfc6986422cca4f9c736f325a2dec1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9dcb94fe93f86b4013e1d175e24f01793bf1cc8ea96e1759f2a4e6a1cfa7580e
[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" "9dcb94fe93f86b4013e1d175e24f01793bf1cc8ea96e1759f2a4e6a1cfa7580e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling riscv v0.5.6
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]    Compiling riscv-rt v0.6.2
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]    Compiling e310x v0.6.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking vcell v0.1.2
[INFO] [stderr]    Compiling hifive1 v0.8.1
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling riscv-rt-macros v0.1.6
[INFO] [stderr]     Checking e310x-hal v0.8.3
[INFO] [stderr]     Checking hifive1-revb-exec v0.0.0 (/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 `hifive1-revb-exec`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "9dcb94fe93f86b4013e1d175e24f01793bf1cc8ea96e1759f2a4e6a1cfa7580e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dcb94fe93f86b4013e1d175e24f01793bf1cc8ea96e1759f2a4e6a1cfa7580e", kill_on_drop: false }`
[INFO] [stdout] 9dcb94fe93f86b4013e1d175e24f01793bf1cc8ea96e1759f2a4e6a1cfa7580e