[INFO] fetching crate panic-never 0.1.0... [INFO] testing panic-never-0.1.0 against 1.55.0 for beta-1.56-1 [INFO] extracting crate panic-never 0.1.0 into /workspace/builds/worker-102/source [INFO] validating manifest of crates.io crate panic-never 0.1.0 on toolchain 1.55.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate panic-never 0.1.0 [INFO] finished tweaking crates.io crate panic-never 0.1.0 [INFO] tweaked toml for crates.io crate panic-never 0.1.0 written to /workspace/builds/worker-102/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 11adaeebcfecc129633e21e5e346ab0ba05926937a25a29f2a5aaee4a1aabfec [INFO] running `Command { std: "docker" "start" "-a" "11adaeebcfecc129633e21e5e346ab0ba05926937a25a29f2a5aaee4a1aabfec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "11adaeebcfecc129633e21e5e346ab0ba05926937a25a29f2a5aaee4a1aabfec", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "11adaeebcfecc129633e21e5e346ab0ba05926937a25a29f2a5aaee4a1aabfec", kill_on_drop: false }` [INFO] [stdout] 11adaeebcfecc129633e21e5e346ab0ba05926937a25a29f2a5aaee4a1aabfec [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 3cc09aab46457de57c82cbec4265e7023acdbc10eb988f6031cf6c094359ac62 [INFO] running `Command { std: "docker" "start" "-a" "3cc09aab46457de57c82cbec4265e7023acdbc10eb988f6031cf6c094359ac62", kill_on_drop: false }` [INFO] [stderr] Compiling panic-never v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.18s [INFO] running `Command { std: "docker" "inspect" "3cc09aab46457de57c82cbec4265e7023acdbc10eb988f6031cf6c094359ac62", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3cc09aab46457de57c82cbec4265e7023acdbc10eb988f6031cf6c094359ac62", kill_on_drop: false }` [INFO] [stdout] 3cc09aab46457de57c82cbec4265e7023acdbc10eb988f6031cf6c094359ac62 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-102/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 44840cb59529b483c486d9ea92fff40d98eab91c7eb08f20b9f1c5c25bd2a0d4 [INFO] running `Command { std: "docker" "start" "-a" "44840cb59529b483c486d9ea92fff40d98eab91c7eb08f20b9f1c5c25bd2a0d4", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling panic-never v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl` [INFO] [stdout] --> src/lib.rs:48:1 [INFO] [stdout] | [INFO] [stdout] 48 | fn panic(_: &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/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-008055cc7d873802.so, /opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-008055cc7d873802.rlib [INFO] [stdout] = note: second definition in the local crate (`panic_never`) [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-never` due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "44840cb59529b483c486d9ea92fff40d98eab91c7eb08f20b9f1c5c25bd2a0d4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "44840cb59529b483c486d9ea92fff40d98eab91c7eb08f20b9f1c5c25bd2a0d4", kill_on_drop: false }` [INFO] [stdout] 44840cb59529b483c486d9ea92fff40d98eab91c7eb08f20b9f1c5c25bd2a0d4