[INFO] fetching crate panic-dcc 0.1.1...
[INFO] testing panic-dcc-0.1.1 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate panic-dcc 0.1.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate panic-dcc 0.1.1
[INFO] finished tweaking crates.io crate panic-dcc 0.1.1
[INFO] tweaked toml for crates.io crate panic-dcc 0.1.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate panic-dcc 0.1.1 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate panic-dcc 0.1.1 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2bd395b300d08a9793047cb5e369c3558604ee910f68d8b1a4be972ad7213a6f
[INFO] running `Command { std: "docker" "start" "-a" "2bd395b300d08a9793047cb5e369c3558604ee910f68d8b1a4be972ad7213a6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bd395b300d08a9793047cb5e369c3558604ee910f68d8b1a4be972ad7213a6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bd395b300d08a9793047cb5e369c3558604ee910f68d8b1a4be972ad7213a6f", kill_on_drop: false }`
[INFO] [stdout] 2bd395b300d08a9793047cb5e369c3558604ee910f68d8b1a4be972ad7213a6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5103c08025895534332750eebac4a7937792433aef4c19de442b48ae3869b73
[INFO] running `Command { std: "docker" "start" "-a" "e5103c08025895534332750eebac4a7937792433aef4c19de442b48ae3869b73", kill_on_drop: false }`
[INFO] [stderr]    Compiling arm-dcc v0.1.1
[INFO] [stderr]    Compiling panic-dcc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "e5103c08025895534332750eebac4a7937792433aef4c19de442b48ae3869b73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5103c08025895534332750eebac4a7937792433aef4c19de442b48ae3869b73", kill_on_drop: false }`
[INFO] [stdout] e5103c08025895534332750eebac4a7937792433aef4c19de442b48ae3869b73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7ad6b781a68af818323fc4e2cecdb49797dc45ff680c157ddb84ef89087618e
[INFO] running `Command { std: "docker" "start" "-a" "b7ad6b781a68af818323fc4e2cecdb49797dc45ff680c157ddb84ef89087618e", kill_on_drop: false }`
[INFO] [stderr]    Compiling panic-dcc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/lib.rs:64:1
[INFO] [stdout]    |
[INFO] [stdout] 64 | / fn panic(info: &PanicInfo) -> ! {
[INFO] [stdout] ...  |
[INFO] [stdout] 75 | | }
[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/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9fbdd90241d2d923.so, /opt/rustwide/rustup-home/toolchains/b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9fbdd90241d2d923.rlib
[INFO] [stdout]    = note: second definition in the local crate (`panic_dcc`)
[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-dcc` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "b7ad6b781a68af818323fc4e2cecdb49797dc45ff680c157ddb84ef89087618e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7ad6b781a68af818323fc4e2cecdb49797dc45ff680c157ddb84ef89087618e", kill_on_drop: false }`
[INFO] [stdout] b7ad6b781a68af818323fc4e2cecdb49797dc45ff680c157ddb84ef89087618e