[INFO] updating cached repository colemanator/rust-os
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/colemanator/rust-os
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/colemanator/rust-os" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/colemanator/rust-os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/colemanator/rust-os'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/colemanator/rust-os" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/colemanator/rust-os"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/colemanator/rust-os'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 273ce351cece0b27d612f347176fe948fe166bba
[INFO] sha for GitHub repo colemanator/rust-os: 273ce351cece0b27d612f347176fe948fe166bba
[INFO] validating manifest of colemanator/rust-os on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of colemanator/rust-os on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing colemanator/rust-os
[INFO] finished frobbing colemanator/rust-os
[INFO] frobbed toml for colemanator/rust-os written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/colemanator/rust-os/Cargo.toml
[INFO] started frobbing colemanator/rust-os
[INFO] finished frobbing colemanator/rust-os
[INFO] frobbed toml for colemanator/rust-os written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/colemanator/rust-os/Cargo.toml
[INFO] crate colemanator/rust-os already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking colemanator/rust-os against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-3/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/colemanator/rust-os:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] aa945a12375438f19d2bf102fd8e9bcb058e78590175a9e3bc0c02586948fc05
[INFO] running `"docker" "start" "-a" "aa945a12375438f19d2bf102fd8e9bcb058e78590175a9e3bc0c02586948fc05"`
[INFO] [stderr]     Checking rust_os v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0152]: duplicate lang item found: `panic_impl`.
[INFO] [stderr]   --> src/main.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stderr] 13 | |     loop{}
[INFO] [stderr] 14 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: first defined in crate `std`.
[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 `rust_os`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "aa945a12375438f19d2bf102fd8e9bcb058e78590175a9e3bc0c02586948fc05"`
[INFO] running `"docker" "rm" "-f" "aa945a12375438f19d2bf102fd8e9bcb058e78590175a9e3bc0c02586948fc05"`
[INFO] [stdout] aa945a12375438f19d2bf102fd8e9bcb058e78590175a9e3bc0c02586948fc05