[INFO] updating cached repository souvik1997/kernel-roulette
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/souvik1997/kernel-roulette
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/souvik1997/kernel-roulette" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/souvik1997/kernel-roulette"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/souvik1997/kernel-roulette'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/souvik1997/kernel-roulette" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/souvik1997/kernel-roulette"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/souvik1997/kernel-roulette'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 26ecfcda224678019b0ba8b1bff7daaf7b30f65f
[INFO] sha for GitHub repo souvik1997/kernel-roulette: 26ecfcda224678019b0ba8b1bff7daaf7b30f65f
[INFO] validating manifest of souvik1997/kernel-roulette on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of souvik1997/kernel-roulette on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing souvik1997/kernel-roulette
[INFO] finished frobbing souvik1997/kernel-roulette
[INFO] frobbed toml for souvik1997/kernel-roulette written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/souvik1997/kernel-roulette/Cargo.toml
[INFO] started frobbing souvik1997/kernel-roulette
[INFO] finished frobbing souvik1997/kernel-roulette
[INFO] frobbed toml for souvik1997/kernel-roulette written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/souvik1997/kernel-roulette/Cargo.toml
[INFO] crate souvik1997/kernel-roulette already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking souvik1997/kernel-roulette against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-3/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/souvik1997/kernel-roulette:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2c2dc6baf64971ae3272ce9faabbad1ccee24f25451bbc77a9a433bcb5e59685
[INFO] running `"docker" "start" "-a" "2c2dc6baf64971ae3272ce9faabbad1ccee24f25451bbc77a9a433bcb5e59685"`
[INFO] [stderr]     Checking spin v0.4.9
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking kernel-roulette v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the feature `alloc` has been stable since 1.36.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![feature(alloc)]
[INFO] [stderr]   |            ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::alloc::Layout`
[INFO] [stderr]   --> src/lang.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 | use core::alloc::Layout;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0152]: duplicate lang item found: `eh_personality`.
[INFO] [stderr]  --> src/lang.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub extern "C" 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/lang.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | / pub fn rust_begin_panic(info: &PanicInfo) -> ! {
[INFO] [stderr] 16 | |     // Print the file and line number
[INFO] [stderr] 17 | |     if let Some(location) = info.location() {
[INFO] [stderr] 18 | |         println!("Rust panic @ {}:{}",
[INFO] [stderr] ...  |
[INFO] [stderr] 30 | |     }
[INFO] [stderr] 31 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: first defined in crate `std`.
[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 `kernel-roulette`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2c2dc6baf64971ae3272ce9faabbad1ccee24f25451bbc77a9a433bcb5e59685"`
[INFO] running `"docker" "rm" "-f" "2c2dc6baf64971ae3272ce9faabbad1ccee24f25451bbc77a9a433bcb5e59685"`
[INFO] [stdout] 2c2dc6baf64971ae3272ce9faabbad1ccee24f25451bbc77a9a433bcb5e59685