[INFO] fetching crate tg-rcore-tutorial-ch1-uart3 0.1.1-preview.1...
[INFO] testing tg-rcore-tutorial-ch1-uart3-0.1.1-preview.1 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate tg-rcore-tutorial-ch1-uart3 0.1.1-preview.1 into /workspace/builds/worker-6-tc1/source
[INFO] removed /workspace/builds/worker-6-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-6-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate tg-rcore-tutorial-ch1-uart3 0.1.1-preview.1
[INFO] finished tweaking crates.io crate tg-rcore-tutorial-ch1-uart3 0.1.1-preview.1
[INFO] tweaked toml for crates.io crate tg-rcore-tutorial-ch1-uart3 0.1.1-preview.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tg-rcore-tutorial-ch1-uart3 0.1.1-preview.1 on toolchain ec6f9a5b4413f74386267ef8efc93712c2ce6db6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tg-rcore-tutorial-ch1-uart3 0.1.1-preview.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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tg-sbi v0.4.2-preview.1
[INFO] [stderr]   Downloaded tg-rcore-tutorial-uart1 v0.1.0-preview.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3279d077386cf4ebb3a7bec69a267f7e024c5a3b9cb48ca3c79f0325b6202aea
[INFO] running `Command { std: "docker" "start" "-a" "3279d077386cf4ebb3a7bec69a267f7e024c5a3b9cb48ca3c79f0325b6202aea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3279d077386cf4ebb3a7bec69a267f7e024c5a3b9cb48ca3c79f0325b6202aea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3279d077386cf4ebb3a7bec69a267f7e024c5a3b9cb48ca3c79f0325b6202aea", kill_on_drop: false }`
[INFO] [stdout] 3279d077386cf4ebb3a7bec69a267f7e024c5a3b9cb48ca3c79f0325b6202aea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+ec6f9a5b4413f74386267ef8efc93712c2ce6db6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1f855daa2aca5912d951152b272d0f94782e23b19f953e0e1c2dc289601d428
[INFO] running `Command { std: "docker" "start" "-a" "d1f855daa2aca5912d951152b272d0f94782e23b19f953e0e1c2dc289601d428", kill_on_drop: false }`
[INFO] [stderr]    Compiling tg-rcore-tutorial-uart1 v0.1.0-preview.1
[INFO] [stderr]    Compiling tg-rcore-tutorial-ch1-uart3 v0.1.1-preview.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling tg-sbi v0.4.2-preview.1
[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 `tg-rcore-tutorial-ch1-uart3` (bin "tg-rcore-tutorial-ch1-uart3") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "d1f855daa2aca5912d951152b272d0f94782e23b19f953e0e1c2dc289601d428", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1f855daa2aca5912d951152b272d0f94782e23b19f953e0e1c2dc289601d428", kill_on_drop: false }`
[INFO] [stdout] d1f855daa2aca5912d951152b272d0f94782e23b19f953e0e1c2dc289601d428
