[INFO] crate panic-halt 0.2.0 is already in cache
[INFO] testing panic-halt-0.2.0 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] extracting crate panic-halt 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate panic-halt 0.2.0 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stdout] 8802d9cb5f79061a841f75b23592dc4e09a9fd96d91588b115fb62f92e778c0d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "8802d9cb5f79061a841f75b23592dc4e09a9fd96d91588b115fb62f92e778c0d"`
[INFO] [stderr]    Compiling panic-halt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.21s
[INFO] running `"docker" "inspect" "8802d9cb5f79061a841f75b23592dc4e09a9fd96d91588b115fb62f92e778c0d"`
[INFO] running `"docker" "rm" "-f" "8802d9cb5f79061a841f75b23592dc4e09a9fd96d91588b115fb62f92e778c0d"`
[INFO] [stdout] 8802d9cb5f79061a841f75b23592dc4e09a9fd96d91588b115fb62f92e778c0d
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 04cba2e4566e9a2f9126662b5ca88681d7e87c9f69f9f6d96089d411154108d3
[INFO] running `"docker" "start" "-a" "04cba2e4566e9a2f9126662b5ca88681d7e87c9f69f9f6d96089d411154108d3"`
[INFO] [stderr]    Compiling panic-halt v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stderr]   --> src/lib.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stderr] 32 | |     loop {
[INFO] [stderr] 33 | |         atomic::compiler_fence(Ordering::SeqCst);
[INFO] [stderr] 34 | |     }
[INFO] [stderr] 35 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0152`.
[INFO] [stderr] error: could not compile `panic-halt`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "04cba2e4566e9a2f9126662b5ca88681d7e87c9f69f9f6d96089d411154108d3"`
[INFO] running `"docker" "rm" "-f" "04cba2e4566e9a2f9126662b5ca88681d7e87c9f69f9f6d96089d411154108d3"`
[INFO] [stdout] 04cba2e4566e9a2f9126662b5ca88681d7e87c9f69f9f6d96089d411154108d3