[INFO] fetching crate kunit 0.1.1...
[INFO] testing kunit-0.1.1 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-1
[INFO] extracting crate kunit 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate kunit 0.1.1
[INFO] finished tweaking crates.io crate kunit 0.1.1
[INFO] tweaked toml for crates.io crate kunit 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate kunit 0.1.1 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate kunit 0.1.1 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" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded volatile v0.4.6
[INFO] [stderr]   Downloaded uart_16550 v0.4.0
[INFO] [stderr]   Downloaded const_fn v0.4.11
[INFO] [stderr]   Downloaded conquer-once v0.4.0
[INFO] [stderr]   Downloaded conquer-util v0.3.0
[INFO] [stderr]   Downloaded kunit_macros v0.1.0
[INFO] [stderr]   Downloaded x86_64 v0.15.4
[INFO] [stderr]   Downloaded heapless v0.9.2
[INFO] [stderr]   Downloaded raw-cpuid v10.7.0
[INFO] [stderr]   Downloaded x86 v0.52.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0db05789ce765ebd50f693f09aee53e29010887b3420d5ee7089b6700a102126
[INFO] running `Command { std: "docker" "start" "-a" "0db05789ce765ebd50f693f09aee53e29010887b3420d5ee7089b6700a102126", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0db05789ce765ebd50f693f09aee53e29010887b3420d5ee7089b6700a102126", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0db05789ce765ebd50f693f09aee53e29010887b3420d5ee7089b6700a102126", kill_on_drop: false }`
[INFO] [stdout] 0db05789ce765ebd50f693f09aee53e29010887b3420d5ee7089b6700a102126
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08922f7021ef221cdd488a1b37c36fc3ad31ff11ed58a683690af2cd83c8d8f2
[INFO] running `Command { std: "docker" "start" "-a" "08922f7021ef221cdd488a1b37c36fc3ad31ff11ed58a683690af2cd83c8d8f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling x86 v0.52.0
[INFO] [stderr]    Compiling const_fn v0.4.11
[INFO] [stderr]    Compiling heapless v0.9.2
[INFO] [stderr]    Compiling conquer-util v0.3.0
[INFO] [stderr]    Compiling volatile v0.4.6
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling raw-cpuid v10.7.0
[INFO] [stderr]    Compiling spin v0.10.0
[INFO] [stderr]    Compiling conquer-once v0.4.0
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]    Compiling x86_64 v0.15.4
[INFO] [stderr]    Compiling syn v2.0.114
[INFO] [stderr]    Compiling uart_16550 v0.4.0
[INFO] [stderr]    Compiling kunit_macros v0.1.0
[INFO] [stderr]    Compiling kunit v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.40s
[INFO] running `Command { std: "docker" "inspect" "08922f7021ef221cdd488a1b37c36fc3ad31ff11ed58a683690af2cd83c8d8f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08922f7021ef221cdd488a1b37c36fc3ad31ff11ed58a683690af2cd83c8d8f2", kill_on_drop: false }`
[INFO] [stdout] 08922f7021ef221cdd488a1b37c36fc3ad31ff11ed58a683690af2cd83c8d8f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 663edcbf325fb736c3f165894079c0c8e2dd7e36cac2cadeed467d60e64661d8
[INFO] running `Command { std: "docker" "start" "-a" "663edcbf325fb736c3f165894079c0c8e2dd7e36cac2cadeed467d60e64661d8", kill_on_drop: false }`
[INFO] [stderr]    Compiling kunit v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[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 `kunit` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "663edcbf325fb736c3f165894079c0c8e2dd7e36cac2cadeed467d60e64661d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "663edcbf325fb736c3f165894079c0c8e2dd7e36cac2cadeed467d60e64661d8", kill_on_drop: false }`
[INFO] [stdout] 663edcbf325fb736c3f165894079c0c8e2dd7e36cac2cadeed467d60e64661d8