[INFO] fetching crate riscv-rt 0.13.0...
[INFO] checking riscv-rt-0.13.0 against master#8549802939cd01111c46e34a7b67cb1933977af9 for pr-132712
[INFO] extracting crate riscv-rt 0.13.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate riscv-rt 0.13.0 on toolchain 8549802939cd01111c46e34a7b67cb1933977af9
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate riscv-rt 0.13.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate riscv-rt 0.13.0
[INFO] tweaked toml for crates.io crate riscv-rt 0.13.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate crates.io crate riscv-rt 0.13.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded riscv-rt-macros v0.2.2
[INFO] [stderr]   Downloaded riscv-macros v0.1.0
[INFO] [stderr]   Downloaded riscv-pac v0.2.0
[INFO] [stderr]   Downloaded riscv v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ab22f84d0d26d01056c038b11ae664a0046cd54d4c000a5453f435860886d4f
[INFO] running `Command { std: "docker" "start" "-a" "9ab22f84d0d26d01056c038b11ae664a0046cd54d4c000a5453f435860886d4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ab22f84d0d26d01056c038b11ae664a0046cd54d4c000a5453f435860886d4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9ab22f84d0d26d01056c038b11ae664a0046cd54d4c000a5453f435860886d4f", kill_on_drop: false }`
[INFO] [stdout] 9ab22f84d0d26d01056c038b11ae664a0046cd54d4c000a5453f435860886d4f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+8549802939cd01111c46e34a7b67cb1933977af9" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3789381636aa9ca34fad9d6737204035e10c483f5b746928616748703498e733
[INFO] running `Command { std: "docker" "start" "-a" "3789381636aa9ca34fad9d6737204035e10c483f5b746928616748703498e733", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling riscv v0.12.0
[INFO] [stderr]    Compiling riscv-rt v0.13.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking critical-section v1.1.2
[INFO] [stderr]     Checking embedded-hal v1.0.0
[INFO] [stderr]     Checking riscv-pac v0.2.0
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.68
[INFO] [stderr]    Compiling riscv-macros v0.1.0
[INFO] [stderr]    Compiling riscv-rt-macros v0.2.2
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `riscv-rt` (example "empty") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `riscv-rt` (example "multi_core") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "3789381636aa9ca34fad9d6737204035e10c483f5b746928616748703498e733", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3789381636aa9ca34fad9d6737204035e10c483f5b746928616748703498e733", kill_on_drop: false }`
[INFO] [stdout] 3789381636aa9ca34fad9d6737204035e10c483f5b746928616748703498e733