[INFO] fetching crate tg-rcore-tutorial-ch1-uart2 0.1.0-preview.2...
[INFO] testing tg-rcore-tutorial-ch1-uart2-0.1.0-preview.2 against master#ec6f9a5b4413f74386267ef8efc93712c2ce6db6 for pr-155739-1
[INFO] extracting crate tg-rcore-tutorial-ch1-uart2 0.1.0-preview.2 into /workspace/builds/worker-0-tc1/source
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml
[INFO] removed /workspace/builds/worker-0-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate tg-rcore-tutorial-ch1-uart2 0.1.0-preview.2
[INFO] finished tweaking crates.io crate tg-rcore-tutorial-ch1-uart2 0.1.0-preview.2
[INFO] tweaked toml for crates.io crate tg-rcore-tutorial-ch1-uart2 0.1.0-preview.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tg-rcore-tutorial-ch1-uart2 0.1.0-preview.2 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-uart2 0.1.0-preview.2 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] fee2c5656faf84db53fc407ad6f40a4be523a85ba5bee290f9ec225b60ec307c
[INFO] running `Command { std: "docker" "start" "-a" "fee2c5656faf84db53fc407ad6f40a4be523a85ba5bee290f9ec225b60ec307c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fee2c5656faf84db53fc407ad6f40a4be523a85ba5bee290f9ec225b60ec307c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fee2c5656faf84db53fc407ad6f40a4be523a85ba5bee290f9ec225b60ec307c", kill_on_drop: false }`
[INFO] [stdout] fee2c5656faf84db53fc407ad6f40a4be523a85ba5bee290f9ec225b60ec307c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] cbc0afce426d7a36986c99065c4322e98b85f781b9a6c6932038ddbf0cf1cd9d
[INFO] running `Command { std: "docker" "start" "-a" "cbc0afce426d7a36986c99065c4322e98b85f781b9a6c6932038ddbf0cf1cd9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling tg-rcore-tutorial-ch1-uart2 v0.1.0-preview.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "cbc0afce426d7a36986c99065c4322e98b85f781b9a6c6932038ddbf0cf1cd9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbc0afce426d7a36986c99065c4322e98b85f781b9a6c6932038ddbf0cf1cd9d", kill_on_drop: false }`
[INFO] [stdout] cbc0afce426d7a36986c99065c4322e98b85f781b9a6c6932038ddbf0cf1cd9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aa3f7f4db3a087d02127251a9994f695ff415b92208a6751d2f043e7273af47c
[INFO] running `Command { std: "docker" "start" "-a" "aa3f7f4db3a087d02127251a9994f695ff415b92208a6751d2f043e7273af47c", kill_on_drop: false }`
[INFO] [stderr]    Compiling tg-rcore-tutorial-ch1-uart2 v0.1.0-preview.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:82:1
[INFO] [stdout]    |
[INFO] [stdout] 82 | / fn panic(_info: &core::panic::PanicInfo) -> ! {
[INFO] [stdout] 83 | |     shutdown(true)
[INFO] [stdout] 84 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]    = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-6f68ae1f01e962b3.so, /opt/rustwide/rustup-home/toolchains/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-6f68ae1f01e962b3.rlib, /opt/rustwide/rustup-home/toolchains/ec6f9a5b4413f74386267ef8efc93712c2ce6db6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-6f68ae1f01e962b3.rmeta
[INFO] [stdout]    = note: second definition in the local crate (`tg_rcore_tutorial_ch1_uart2`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tg-rcore-tutorial-ch1-uart2` (bin "tg-rcore-tutorial-ch1-uart2" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "aa3f7f4db3a087d02127251a9994f695ff415b92208a6751d2f043e7273af47c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa3f7f4db3a087d02127251a9994f695ff415b92208a6751d2f043e7273af47c", kill_on_drop: false }`
[INFO] [stdout] aa3f7f4db3a087d02127251a9994f695ff415b92208a6751d2f043e7273af47c
