Aug 11 17:23:23.758 INFO checking conc-0.5.0 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 11 17:23:23.758 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 17:23:23.758 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 17:23:23.758 INFO running `"docker" "create" "-v" "/tmp/crater.c3dURHmUqR81:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-1/master#f6d43ed84207c7e58f363f46e5a438ff40f2b311:/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" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 11 17:23:24.025 INFO blam! aec9d42d802544917771be6e633367b87daff7317478d868a7b9ec4a4ab6bf4b
Aug 11 17:23:24.028 INFO running `"docker" "start" "-a" "aec9d42d802544917771be6e633367b87daff7317478d868a7b9ec4a4ab6bf4b"`
Aug 11 17:23:25.409 INFO kablam!     Checking spin v0.4.8
Aug 11 17:23:25.764 INFO kablam! error[E0635]: unknown feature `const_atomic_usize_new`
Aug 11 17:23:25.764 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.8/src/lib.rs:8:76
Aug 11 17:23:25.765 INFO kablam!   |
Aug 11 17:23:25.765 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Aug 11 17:23:25.765 INFO kablam!   |                                                                            ^^^^^^^^^^^^^^^^^^^^^^
Aug 11 17:23:25.765 INFO kablam! 
Aug 11 17:23:25.765 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 17:23:25.765 INFO kablam!  --> /cargo-home/registry/src/github.com-1ecc6299db9ec823/spin-0.4.8/src/lib.rs:8:53
Aug 11 17:23:25.765 INFO kablam!   |
Aug 11 17:23:25.765 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Aug 11 17:23:25.765 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Aug 11 17:23:25.765 INFO kablam! 
Aug 11 17:23:25.784 INFO kablam! error: aborting due to 2 previous errors
Aug 11 17:23:25.784 INFO kablam! 
Aug 11 17:23:25.784 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 17:23:25.793 INFO kablam! error: Could not compile `spin`.
Aug 11 17:23:25.794 INFO kablam! 
Aug 11 17:23:25.794 INFO kablam! To learn more, run the command again with --verbose.
Aug 11 17:23:25.795 INFO kablam! su: No module specific data is present
Aug 11 17:23:26.490 INFO running `"docker" "rm" "-f" "aec9d42d802544917771be6e633367b87daff7317478d868a7b9ec4a4ab6bf4b"`
Aug 11 17:23:26.678 INFO blam! aec9d42d802544917771be6e633367b87daff7317478d868a7b9ec4a4ab6bf4b