Sep 01 12:39:41.503 INFO checking souvik1997/kernel-roulette against try#952c7dbfa2628309f557b367929ffc17af20b332 for pr-53851
Sep 01 12:39:41.504 INFO running: cargo +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets
Sep 01 12:39:41.504 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53851/try#952c7dbfa2628309f557b367929ffc17af20b332:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-2/try#952c7dbfa2628309f557b367929ffc17af20b332:/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 +952c7dbfa2628309f557b367929ffc17af20b332-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 01 12:39:41.734 INFO blam! 728ea2e0b14e24983bd19db46771f8714176e7c2efdd987857c725aa68c18d71
Sep 01 12:39:41.737 INFO running `"docker" "start" "-a" "728ea2e0b14e24983bd19db46771f8714176e7c2efdd987857c725aa68c18d71"`
Sep 01 12:39:42.619 INFO kablam!     Checking spin v0.4.7
Sep 01 12:39:42.619 INFO kablam!     Checking rand v0.4.2
Sep 01 12:39:43.050 INFO kablam! error[E0635]: unknown feature `const_atomic_usize_new`
Sep 01 12:39:43.050 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.7/src/lib.rs:8:76
Sep 01 12:39:43.050 INFO kablam!   |
Sep 01 12:39:43.050 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Sep 01 12:39:43.050 INFO kablam!   |                                                                            ^^^^^^^^^^^^^^^^^^^^^^
Sep 01 12:39:43.050 INFO kablam! 
Sep 01 12:39:43.050 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Sep 01 12:39:43.050 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.7/src/lib.rs:8:53
Sep 01 12:39:43.050 INFO kablam!   |
Sep 01 12:39:43.050 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Sep 01 12:39:43.050 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Sep 01 12:39:43.050 INFO kablam! 
Sep 01 12:39:43.077 INFO kablam! error: aborting due to 2 previous errors
Sep 01 12:39:43.077 INFO kablam! 
Sep 01 12:39:43.077 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Sep 01 12:39:43.084 INFO kablam! error: Could not compile `spin`.
Sep 01 12:39:43.084 INFO kablam! warning: build failed, waiting for other jobs to finish...
Sep 01 12:39:45.169 INFO kablam! error: build failed
Sep 01 12:39:45.171 INFO kablam! su: No module specific data is present
Sep 01 12:39:45.727 INFO running `"docker" "rm" "-f" "728ea2e0b14e24983bd19db46771f8714176e7c2efdd987857c725aa68c18d71"`
Sep 01 12:39:45.884 INFO blam! 728ea2e0b14e24983bd19db46771f8714176e7c2efdd987857c725aa68c18d71