[INFO] updating cached repository https://github.com/souvik1997/kernel-roulette
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 26ecfcda224678019b0ba8b1bff7daaf7b30f65f
[INFO] checking souvik1997/kernel-roulette against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsouvik1997%2Fkernel-roulette" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/souvik1997/kernel-roulette on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/souvik1997/kernel-roulette
[INFO] finished tweaking git repo https://github.com/souvik1997/kernel-roulette
[INFO] tweaked toml for git repo https://github.com/souvik1997/kernel-roulette written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/souvik1997/kernel-roulette already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 59c9ba4e7f1c920eb13f196bdbcf651403fa1ec61a5141709a3b06d108d9d82a
[INFO] running `"docker" "start" "-a" "59c9ba4e7f1c920eb13f196bdbcf651403fa1ec61a5141709a3b06d108d9d82a"`
[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/rustwide/workdir)
[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` (which `std` depends on).
[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` (which `test` depends on).
[INFO] [stderr] 
[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] 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" "59c9ba4e7f1c920eb13f196bdbcf651403fa1ec61a5141709a3b06d108d9d82a"`
[INFO] running `"docker" "rm" "-f" "59c9ba4e7f1c920eb13f196bdbcf651403fa1ec61a5141709a3b06d108d9d82a"`
[INFO] [stdout] 59c9ba4e7f1c920eb13f196bdbcf651403fa1ec61a5141709a3b06d108d9d82a