Aug 31 20:02:21.737 INFO checking souvik1997/kernel-roulette against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Aug 31 20:02:21.737 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Aug 31 20:02:21.737 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-0/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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=500" "-e" "CMD=cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 20:02:21.942 INFO blam! af15ac55b0a27de3628a9306a3f58e3165c3b4b83d506f7acde07eef402ca958
Aug 31 20:02:21.944 INFO running `"docker" "start" "-a" "af15ac55b0a27de3628a9306a3f58e3165c3b4b83d506f7acde07eef402ca958"`
Aug 31 20:02:22.822 INFO kablam!     Checking spin v0.4.7
Aug 31 20:02:22.825 INFO kablam!     Checking rand v0.4.2
Aug 31 20:02:23.156 INFO kablam! error[E0635]: unknown feature `const_atomic_usize_new`
Aug 31 20:02:23.156 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.7/src/lib.rs:8:76
Aug 31 20:02:23.156 INFO kablam!   |
Aug 31 20:02:23.156 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Aug 31 20:02:23.156 INFO kablam!   |                                                                            ^^^^^^^^^^^^^^^^^^^^^^
Aug 31 20:02:23.156 INFO kablam! 
Aug 31 20:02:23.156 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 31 20:02:23.156 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.7/src/lib.rs:8:53
Aug 31 20:02:23.157 INFO kablam!   |
Aug 31 20:02:23.157 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Aug 31 20:02:23.157 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Aug 31 20:02:23.157 INFO kablam! 
Aug 31 20:02:23.176 INFO kablam! error: aborting due to 2 previous errors
Aug 31 20:02:23.177 INFO kablam! 
Aug 31 20:02:23.177 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 31 20:02:23.184 INFO kablam! error: Could not compile `spin`.
Aug 31 20:02:23.184 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 31 20:02:25.225 INFO kablam! error: build failed
Aug 31 20:02:25.227 INFO kablam! su: No module specific data is present
Aug 31 20:02:25.737 INFO running `"docker" "rm" "-f" "af15ac55b0a27de3628a9306a3f58e3165c3b4b83d506f7acde07eef402ca958"`
Aug 31 20:02:25.890 INFO blam! af15ac55b0a27de3628a9306a3f58e3165c3b4b83d506f7acde07eef402ca958