[INFO] fetching crate panic-halt 0.2.0...
[INFO] building panic-halt-0.2.0 against master#d5c88c22807925c189328ef9d923c5d2b11a95b8 for pr-87066-3
[INFO] extracting crate panic-halt 0.2.0 into /workspace/builds/worker-64/source
[INFO] validating manifest of crates.io crate panic-halt 0.2.0 on toolchain d5c88c22807925c189328ef9d923c5d2b11a95b8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "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-64/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1b238b7fa4d34878d1edbac2ce8d16eccfbd0404b3fc11f52888af4eb7e3a14
[INFO] running `Command { std: "docker" "start" "-a" "f1b238b7fa4d34878d1edbac2ce8d16eccfbd0404b3fc11f52888af4eb7e3a14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1b238b7fa4d34878d1edbac2ce8d16eccfbd0404b3fc11f52888af4eb7e3a14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b238b7fa4d34878d1edbac2ce8d16eccfbd0404b3fc11f52888af4eb7e3a14", kill_on_drop: false }`
[INFO] [stdout] f1b238b7fa4d34878d1edbac2ce8d16eccfbd0404b3fc11f52888af4eb7e3a14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35e9906c6306ed8ce3e67110c34ffb0309b9ca0f08ddbbbd3f71b142d014c87f
[INFO] running `Command { std: "docker" "start" "-a" "35e9906c6306ed8ce3e67110c34ffb0309b9ca0f08ddbbbd3f71b142d014c87f", kill_on_drop: false }`
[INFO] [stderr]    Compiling panic-halt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.23s
[INFO] running `Command { std: "docker" "inspect" "35e9906c6306ed8ce3e67110c34ffb0309b9ca0f08ddbbbd3f71b142d014c87f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35e9906c6306ed8ce3e67110c34ffb0309b9ca0f08ddbbbd3f71b142d014c87f", kill_on_drop: false }`
[INFO] [stdout] 35e9906c6306ed8ce3e67110c34ffb0309b9ca0f08ddbbbd3f71b142d014c87f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d5c88c22807925c189328ef9d923c5d2b11a95b8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 07e1fb9c670c8b09a11514a2a61815164faedeaee98980356d194cd2b47df7ae
[INFO] running `Command { std: "docker" "start" "-a" "07e1fb9c670c8b09a11514a2a61815164faedeaee98980356d194cd2b47df7ae", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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/d5c88c22807925c189328ef9d923c5d2b11a95b8/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-10ccbcbb85a60ebf.so, /opt/rustwide/rustup-home/toolchains/d5c88c22807925c189328ef9d923c5d2b11a95b8/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-10ccbcbb85a60ebf.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` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "07e1fb9c670c8b09a11514a2a61815164faedeaee98980356d194cd2b47df7ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07e1fb9c670c8b09a11514a2a61815164faedeaee98980356d194cd2b47df7ae", kill_on_drop: false }`
[INFO] [stdout] 07e1fb9c670c8b09a11514a2a61815164faedeaee98980356d194cd2b47df7ae