[INFO] fetching crate panic-halt 1.0.0...
[INFO] testing panic-halt-1.0.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate panic-halt 1.0.0 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate panic-halt 1.0.0
[INFO] finished tweaking crates.io crate panic-halt 1.0.0
[INFO] tweaked toml for crates.io crate panic-halt 1.0.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate panic-halt 1.0.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 751ef97efa8ab87ccae7f9d4191bcce7d1f84ed2541f01e6fe1e30d311099c1e
[INFO] running `Command { std: "docker" "start" "-a" "751ef97efa8ab87ccae7f9d4191bcce7d1f84ed2541f01e6fe1e30d311099c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "751ef97efa8ab87ccae7f9d4191bcce7d1f84ed2541f01e6fe1e30d311099c1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "751ef97efa8ab87ccae7f9d4191bcce7d1f84ed2541f01e6fe1e30d311099c1e", kill_on_drop: false }`
[INFO] [stdout] 751ef97efa8ab87ccae7f9d4191bcce7d1f84ed2541f01e6fe1e30d311099c1e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fbf4f6ec2d75ac77bb24637556a2ef6f65c3960cbc3fb6556f66ee43fbe568c
[INFO] running `Command { std: "docker" "start" "-a" "4fbf4f6ec2d75ac77bb24637556a2ef6f65c3960cbc3fb6556f66ee43fbe568c", kill_on_drop: false }`
[INFO] [stderr]    Compiling panic-halt v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "4fbf4f6ec2d75ac77bb24637556a2ef6f65c3960cbc3fb6556f66ee43fbe568c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fbf4f6ec2d75ac77bb24637556a2ef6f65c3960cbc3fb6556f66ee43fbe568c", kill_on_drop: false }`
[INFO] [stdout] 4fbf4f6ec2d75ac77bb24637556a2ef6f65c3960cbc3fb6556f66ee43fbe568c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 128882edc722f231c79f9e9b4b7ffd28ca7d733091468ffa2e5602094bf3dadd
[INFO] running `Command { std: "docker" "start" "-a" "128882edc722f231c79f9e9b4b7ffd28ca7d733091468ffa2e5602094bf3dadd", kill_on_drop: false }`
[INFO] [stderr]    Compiling panic-halt v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/lib.rs:30:1
[INFO] [stdout]    |
[INFO] [stdout] 30 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 31 | |     loop {}
[INFO] [stdout] 32 | | }
[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/1.91.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1227cb2f04eafbe9.so, /opt/rustwide/rustup-home/toolchains/1.91.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1227cb2f04eafbe9.rlib
[INFO] [stdout]    = note: second definition in the local crate (`panic_halt`)
[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 1 previous error
[INFO] running `Command { std: "docker" "inspect" "128882edc722f231c79f9e9b4b7ffd28ca7d733091468ffa2e5602094bf3dadd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "128882edc722f231c79f9e9b4b7ffd28ca7d733091468ffa2e5602094bf3dadd", kill_on_drop: false }`
[INFO] [stdout] 128882edc722f231c79f9e9b4b7ffd28ca7d733091468ffa2e5602094bf3dadd