Dec 19 12:17:59.226 INFO checking mrsweaters/nutbutter-os against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 12:17:59.226 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-5/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/mrsweaters/nutbutter-os:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:17:59.455 INFO [stdout] 83727d1a7b441592cde6563521b5c9fa6b44d4b48e8ff0e50320b3af596fbfc0
Dec 19 12:17:59.456 INFO running `"docker" "start" "-a" "83727d1a7b441592cde6563521b5c9fa6b44d4b48e8ff0e50320b3af596fbfc0"`
Dec 19 12:18:00.414 INFO [stderr]     Checking os_bootinfo v0.2.1
Dec 19 12:18:00.415 INFO [stderr]     Checking spin v0.4.9
Dec 19 12:18:00.415 INFO [stderr]     Checking volatile v0.2.4
Dec 19 12:18:00.416 INFO [stderr]    Compiling lazy_static v1.1.0
Dec 19 12:18:00.584 INFO [stderr]     Checking bootloader_precompiled v0.2.0
Dec 19 12:18:00.961 INFO [stderr]     Checking nb_os v0.1.0 (/opt/crater/workdir)
Dec 19 12:18:01.079 INFO [stderr] error[E0152]: duplicate lang item found: `panic_impl`.
Dec 19 12:18:01.079 INFO [stderr]   --> src/main.rs:17:1
Dec 19 12:18:01.079 INFO [stderr]    |
Dec 19 12:18:01.079 INFO [stderr] 17 | / fn panic(info: &PanicInfo) -> ! {
Dec 19 12:18:01.079 INFO [stderr] 18 | |     println!("{}", info);
Dec 19 12:18:01.079 INFO [stderr] 19 | |     loop {}
Dec 19 12:18:01.079 INFO [stderr] 20 | | }
Dec 19 12:18:01.079 INFO [stderr]    | |_^
Dec 19 12:18:01.079 INFO [stderr]    |
Dec 19 12:18:01.079 INFO [stderr]    = note: first defined in crate `std`.
Dec 19 12:18:01.079 INFO [stderr] 
Dec 19 12:18:01.128 INFO [stderr] error: aborting due to previous error
Dec 19 12:18:01.128 INFO [stderr] 
Dec 19 12:18:01.128 INFO [stderr] For more information about this error, try `rustc --explain E0152`.
Dec 19 12:18:01.135 INFO [stderr] error: Could not compile `nb_os`.
Dec 19 12:18:01.135 INFO [stderr] 
Dec 19 12:18:01.135 INFO [stderr] To learn more, run the command again with --verbose.
Dec 19 12:18:01.321 INFO running `"docker" "inspect" "83727d1a7b441592cde6563521b5c9fa6b44d4b48e8ff0e50320b3af596fbfc0"`
Dec 19 12:18:01.396 INFO running `"docker" "rm" "-f" "83727d1a7b441592cde6563521b5c9fa6b44d4b48e8ff0e50320b3af596fbfc0"`
Dec 19 12:18:01.483 INFO [stdout] 83727d1a7b441592cde6563521b5c9fa6b44d4b48e8ff0e50320b3af596fbfc0