Dec 11 15:33:09.390 INFO checking kevin-bebel/rust_os against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 15:33:09.390 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-2/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 11 15:33:09.869 INFO [stdout] 964328c4fe02ade8a292ea4352ff15f3ae2086a0693c9a7b7b1b5f1d8a4ab0a3
Dec 11 15:33:09.871 INFO running `"docker" "start" "-a" "964328c4fe02ade8a292ea4352ff15f3ae2086a0693c9a7b7b1b5f1d8a4ab0a3"`
Dec 11 15:33:12.132 INFO [stderr] usermod: no changes
Dec 11 15:33:12.270 INFO [stderr]     Checking zero v0.1.2
Dec 11 15:33:12.270 INFO [stderr]    Compiling getopts v0.2.18
Dec 11 15:33:12.663 INFO [stderr]     Checking xmas-elf v0.6.2
Dec 11 15:33:16.086 INFO [stderr]    Compiling pulldown-cmark v0.0.3
Dec 11 15:33:19.440 INFO [stderr]    Compiling skeptic v0.5.0
Dec 11 15:33:20.920 INFO [stderr]    Compiling fixedvec v0.2.3
Dec 11 15:33:22.305 INFO [stderr]     Checking bootloader v0.3.4
Dec 11 15:33:23.040 INFO [stderr]     Checking rust_os v0.1.0 (/source)
Dec 11 15:33:23.424 INFO [stderr] error[E0152]: duplicate lang item found: `panic_impl`.
Dec 11 15:33:23.424 INFO [stderr]   --> src/main.rs:13:1
Dec 11 15:33:23.424 INFO [stderr]    |
Dec 11 15:33:23.424 INFO [stderr] 13 | / fn panic(_info: &PanicInfo) -> ! {
Dec 11 15:33:23.424 INFO [stderr] 14 | |     loop {}
Dec 11 15:33:23.424 INFO [stderr] 15 | | }
Dec 11 15:33:23.424 INFO [stderr]    | |_^
Dec 11 15:33:23.424 INFO [stderr]    |
Dec 11 15:33:23.424 INFO [stderr]    = note: first defined in crate `std`.
Dec 11 15:33:23.424 INFO [stderr] 
Dec 11 15:33:23.443 INFO [stderr] error: aborting due to previous error
Dec 11 15:33:23.443 INFO [stderr] 
Dec 11 15:33:23.443 INFO [stderr] For more information about this error, try `rustc --explain E0152`.
Dec 11 15:33:23.456 INFO [stderr] error: Could not compile `rust_os`.
Dec 11 15:33:23.456 INFO [stderr] 
Dec 11 15:33:23.456 INFO [stderr] To learn more, run the command again with --verbose.
Dec 11 15:33:23.456 INFO [stderr] su: No module specific data is present
Dec 11 15:33:24.267 INFO running `"docker" "inspect" "964328c4fe02ade8a292ea4352ff15f3ae2086a0693c9a7b7b1b5f1d8a4ab0a3"`
Dec 11 15:33:24.586 INFO running `"docker" "rm" "-f" "964328c4fe02ade8a292ea4352ff15f3ae2086a0693c9a7b7b1b5f1d8a4ab0a3"`
Dec 11 15:33:24.932 INFO [stdout] 964328c4fe02ade8a292ea4352ff15f3ae2086a0693c9a7b7b1b5f1d8a4ab0a3