[INFO] fetching crate panic-halt 0.2.0...
[INFO] testing panic-halt-0.2.0 against 1.75.0 for beta-1.76-1
[INFO] extracting crate panic-halt 0.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate panic-halt 0.2.0 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate panic-halt 0.2.0
[INFO] finished tweaking crates.io crate panic-halt 0.2.0
[INFO] tweaked toml for crates.io crate panic-halt 0.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5d0d308a6eddade394fb4cb0c294d2b1da26f490626bfd7b3e07c91cc6b1136
[INFO] running `Command { std: "docker" "start" "-a" "d5d0d308a6eddade394fb4cb0c294d2b1da26f490626bfd7b3e07c91cc6b1136", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5d0d308a6eddade394fb4cb0c294d2b1da26f490626bfd7b3e07c91cc6b1136", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5d0d308a6eddade394fb4cb0c294d2b1da26f490626bfd7b3e07c91cc6b1136", kill_on_drop: false }`
[INFO] [stdout] d5d0d308a6eddade394fb4cb0c294d2b1da26f490626bfd7b3e07c91cc6b1136
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39ca7260837c2c0db8e3cad25a81d162daaa833b5761fd04362a6bfd1bd7c3c9
[INFO] running `Command { std: "docker" "start" "-a" "39ca7260837c2c0db8e3cad25a81d162daaa833b5761fd04362a6bfd1bd7c3c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling panic-halt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "39ca7260837c2c0db8e3cad25a81d162daaa833b5761fd04362a6bfd1bd7c3c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39ca7260837c2c0db8e3cad25a81d162daaa833b5761fd04362a6bfd1bd7c3c9", kill_on_drop: false }`
[INFO] [stdout] 39ca7260837c2c0db8e3cad25a81d162daaa833b5761fd04362a6bfd1bd7c3c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9915ad54ed0f8d88bd8d3b8406ab7c1d66b7014d6434d98ce028526d0ed38b42
[INFO] running `Command { std: "docker" "start" "-a" "9915ad54ed0f8d88bd8d3b8406ab7c1d66b7014d6434d98ce028526d0ed38b42", kill_on_drop: false }`
[INFO] [stderr]    Compiling panic-halt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/lib.rs:31:1
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn panic(_info: &PanicInfo) -> ! {
[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/1.75.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-90f6ddbf82de36ec.so, /opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-90f6ddbf82de36ec.rlib
[INFO] [stdout]    = note: second definition in the local crate (`panic_halt`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `panic-halt` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "9915ad54ed0f8d88bd8d3b8406ab7c1d66b7014d6434d98ce028526d0ed38b42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9915ad54ed0f8d88bd8d3b8406ab7c1d66b7014d6434d98ce028526d0ed38b42", kill_on_drop: false }`
[INFO] [stdout] 9915ad54ed0f8d88bd8d3b8406ab7c1d66b7014d6434d98ce028526d0ed38b42
