Sep 10 02:16:37.863 INFO checking souvik1997/kernel-roulette against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 02:16:37.863 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 02:16:37.863 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-0/try#3a2610c2a16575649896925631bf8cec4f4b1961:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 02:16:38.110 INFO blam! 0aa7c98ec8b51ab69c922c51f706752885554f0afe2c4b5d0da6d001d840b4c2
Sep 10 02:16:38.112 INFO running `"docker" "start" "-a" "0aa7c98ec8b51ab69c922c51f706752885554f0afe2c4b5d0da6d001d840b4c2"`
Sep 10 02:16:39.985 INFO kablam! usermod: no changes
Sep 10 02:16:40.034 INFO kablam!     Checking spin v0.4.7
Sep 10 02:16:40.058 INFO kablam!     Checking rand v0.4.2
Sep 10 02:16:40.484 INFO kablam! error[E0635]: unknown feature `const_atomic_usize_new`
Sep 10 02:16:40.484 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.7/src/lib.rs:8:76
Sep 10 02:16:40.484 INFO kablam!   |
Sep 10 02:16:40.484 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Sep 10 02:16:40.484 INFO kablam!   |                                                                            ^^^^^^^^^^^^^^^^^^^^^^
Sep 10 02:16:40.484 INFO kablam! 
Sep 10 02:16:40.484 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 10 02:16:40.484 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.7/src/lib.rs:8:53
Sep 10 02:16:40.484 INFO kablam!   |
Sep 10 02:16:40.484 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Sep 10 02:16:40.484 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Sep 10 02:16:40.484 INFO kablam! 
Sep 10 02:16:40.507 INFO kablam! error: aborting due to 2 previous errors
Sep 10 02:16:40.507 INFO kablam! 
Sep 10 02:16:40.507 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 10 02:16:40.513 INFO kablam! error: Could not compile `spin`.
Sep 10 02:16:40.513 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 10 02:16:41.694 INFO kablam! error: build failed
Sep 10 02:16:41.694 INFO kablam! su: No module specific data is present
Sep 10 02:16:42.996 INFO running `"docker" "rm" "-f" "0aa7c98ec8b51ab69c922c51f706752885554f0afe2c4b5d0da6d001d840b4c2"`
Sep 10 02:16:43.110 INFO blam! 0aa7c98ec8b51ab69c922c51f706752885554f0afe2c4b5d0da6d001d840b4c2