[INFO] fetching crate riscv-minimal-rt 0.5.0...
[INFO] testing riscv-minimal-rt-0.5.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate riscv-minimal-rt 0.5.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate riscv-minimal-rt 0.5.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate riscv-minimal-rt 0.5.0
[INFO] finished tweaking crates.io crate riscv-minimal-rt 0.5.0
[INFO] tweaked toml for crates.io crate riscv-minimal-rt 0.5.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bare-metal v0.2.4
[INFO] [stderr]   Downloaded riscv v0.5.6
[INFO] [stderr]   Downloaded riscv-minimal-rt-macros v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3cd974200bc4a44a9ab75a0edcde3a7aafbafc6b8c3f83c8509e49c9ca062bc
[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" "a3cd974200bc4a44a9ab75a0edcde3a7aafbafc6b8c3f83c8509e49c9ca062bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a3cd974200bc4a44a9ab75a0edcde3a7aafbafc6b8c3f83c8509e49c9ca062bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a3cd974200bc4a44a9ab75a0edcde3a7aafbafc6b8c3f83c8509e49c9ca062bc", kill_on_drop: false }`
[INFO] [stdout] a3cd974200bc4a44a9ab75a0edcde3a7aafbafc6b8c3f83c8509e49c9ca062bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f7d25a6e18e8f3dfed2ce7535a6ebf9c2fdec0390843aa1029edd41e4f387d3
[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" "6f7d25a6e18e8f3dfed2ce7535a6ebf9c2fdec0390843aa1029edd41e4f387d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling riscv v0.5.6
[INFO] [stderr]    Compiling bit_field v0.9.0
[INFO] [stderr]    Compiling riscv-minimal-rt v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling bare-metal v0.2.4
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling riscv-minimal-rt-macros v0.1.5
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.75s
[INFO] running `Command { std: "docker" "inspect" "6f7d25a6e18e8f3dfed2ce7535a6ebf9c2fdec0390843aa1029edd41e4f387d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f7d25a6e18e8f3dfed2ce7535a6ebf9c2fdec0390843aa1029edd41e4f387d3", kill_on_drop: false }`
[INFO] [stdout] 6f7d25a6e18e8f3dfed2ce7535a6ebf9c2fdec0390843aa1029edd41e4f387d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] eb5b3199fe1cb5defd5d969479f065e56b0962c7ef74e72a3282502f806d0599
[INFO] running `Command { std: "docker" "start" "-a" "eb5b3199fe1cb5defd5d969479f065e56b0962c7ef74e72a3282502f806d0599", kill_on_drop: false }`
[INFO] [stderr]    Compiling riscv-minimal-rt v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: entry symbol `main` declared multiple times
[INFO] [stdout]   |
[INFO] [stdout]   = help: did you use `#[no_mangle]` on `fn main`? Use `#[start]` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `riscv-minimal-rt`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "eb5b3199fe1cb5defd5d969479f065e56b0962c7ef74e72a3282502f806d0599", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb5b3199fe1cb5defd5d969479f065e56b0962c7ef74e72a3282502f806d0599", kill_on_drop: false }`
[INFO] [stdout] eb5b3199fe1cb5defd5d969479f065e56b0962c7ef74e72a3282502f806d0599