[INFO] cloning repository electrickite/rustos
[INFO] running `"git" "clone" "--bare" "git://github.com/electrickite/rustos.git" "work/cache/sources/gh/electrickite/rustos"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/electrickite/rustos'...
[INFO] running `"git" "clone" "work/cache/sources/gh/electrickite/rustos" "work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/electrickite/rustos"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/electrickite/rustos'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/electrickite/rustos" "work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/electrickite/rustos"`
[INFO] [stderr] Cloning into 'work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/electrickite/rustos'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8549cc928c6b2d0fada76909841758eaa7f0f941
[INFO] sha for GitHub repo electrickite/rustos: 8549cc928c6b2d0fada76909841758eaa7f0f941
[INFO] validating manifest of electrickite/rustos on toolchain master#9f06855064ed06a50c496577b21ca50f92a2e67d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of electrickite/rustos on toolchain try#d3301713b54af69ca9de941a8c6b0d8287dbd6df
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing electrickite/rustos
[INFO] finished frobbing electrickite/rustos
[INFO] frobbed toml for electrickite/rustos written to work/ex/pr-61874/sources/master#9f06855064ed06a50c496577b21ca50f92a2e67d/gh/electrickite/rustos/Cargo.toml
[INFO] started frobbing electrickite/rustos
[INFO] finished frobbing electrickite/rustos
[INFO] frobbed toml for electrickite/rustos written to work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/electrickite/rustos/Cargo.toml
[INFO] crate electrickite/rustos already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+9f06855064ed06a50c496577b21ca50f92a2e67d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking electrickite/rustos against try#d3301713b54af69ca9de941a8c6b0d8287dbd6df for pr-61874
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61874/worker-7/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61874/sources/try#d3301713b54af69ca9de941a8c6b0d8287dbd6df/gh/electrickite/rustos:/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" "+d3301713b54af69ca9de941a8c6b0d8287dbd6df-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ad3ea7a788f29a47d947125df5303afdf4cd275fe2a119129b0ad1af3ad31519
[INFO] running `"docker" "start" "-a" "ad3ea7a788f29a47d947125df5303afdf4cd275fe2a119129b0ad1af3ad31519"`
[INFO] [stderr]     Checking multiboot2 v0.7.1
[INFO] [stderr]     Checking rustos v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0152]: duplicate lang item found: `eh_personality`.
[INFO] [stderr]   --> src/lib.rs:72:1
[INFO] [stderr]    |
[INFO] [stderr] 72 | pub extern fn eh_personality() {}
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: first defined in crate `panic_unwind`.
[INFO] [stderr] 
[INFO] [stderr] error[E0152]: duplicate lang item found: `panic_impl`.
[INFO] [stderr]   --> src/lib.rs:76:1
[INFO] [stderr]    |
[INFO] [stderr] 76 | / pub extern fn panic_handler(info: &PanicInfo) -> ! {
[INFO] [stderr] 77 | |     print!("\nRustOS kernel {}", info);
[INFO] [stderr] 78 | |     loop{}
[INFO] [stderr] 79 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: first defined in crate `std`.
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `panic_handler` has been stable since 1.30.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(panic_handler)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(stable_features)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0152`.
[INFO] [stderr] error: Could not compile `rustos`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ad3ea7a788f29a47d947125df5303afdf4cd275fe2a119129b0ad1af3ad31519"`
[INFO] running `"docker" "rm" "-f" "ad3ea7a788f29a47d947125df5303afdf4cd275fe2a119129b0ad1af3ad31519"`
[INFO] [stdout] ad3ea7a788f29a47d947125df5303afdf4cd275fe2a119129b0ad1af3ad31519