Aug 11 01:19:20.813 INFO checking spin-0.4.8 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 11 01:19:20.813 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 01:19:20.813 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 01:19:20.813 INFO running `"docker" "create" "-v" "/tmp/crater.hHob47DZpASo:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-5/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 01:19:20.977 INFO blam! 3a5040ceb8a930274cb6ef796daac093fd4fee66f198257bf3b3e7202ea18157
Aug 11 01:19:20.982 INFO running `"docker" "start" "-a" "3a5040ceb8a930274cb6ef796daac093fd4fee66f198257bf3b3e7202ea18157"`
Aug 11 01:19:21.955 INFO kablam!     Checking spin v0.4.8 (file:///source)
Aug 11 01:19:22.460 INFO kablam! warning: unnecessary `unsafe` block
Aug 11 01:19:22.460 INFO kablam!    --> src/mutex.rs:156:9
Aug 11 01:19:22.460 INFO kablam!     |
Aug 11 01:19:22.460 INFO kablam! 156 |         unsafe { data.into_inner() }
Aug 11 01:19:22.460 INFO kablam!     |         ^^^^^^ unnecessary `unsafe` block
Aug 11 01:19:22.460 INFO kablam!     |
Aug 11 01:19:22.460 INFO kablam!     = note: #[warn(unused_unsafe)] on by default
Aug 11 01:19:22.461 INFO kablam! 
Aug 11 01:19:22.461 INFO kablam! warning: unnecessary `unsafe` block
Aug 11 01:19:22.461 INFO kablam!    --> src/rw_lock.rs:138:9
Aug 11 01:19:22.461 INFO kablam!     |
Aug 11 01:19:22.461 INFO kablam! 138 |         unsafe { data.into_inner() }
Aug 11 01:19:22.461 INFO kablam!     |         ^^^^^^ unnecessary `unsafe` block
Aug 11 01:19:22.461 INFO kablam! 
Aug 11 01:19:22.462 INFO kablam! error[E0635]: unknown feature `const_atomic_usize_new`
Aug 11 01:19:22.462 INFO kablam!  --> src/lib.rs:8:76
Aug 11 01:19:22.462 INFO kablam!   |
Aug 11 01:19:22.462 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Aug 11 01:19:22.462 INFO kablam!   |                                                                            ^^^^^^^^^^^^^^^^^^^^^^
Aug 11 01:19:22.463 INFO kablam! 
Aug 11 01:19:22.464 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 01:19:22.464 INFO kablam!  --> src/lib.rs:8:53
Aug 11 01:19:22.464 INFO kablam!   |
Aug 11 01:19:22.464 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Aug 11 01:19:22.464 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Aug 11 01:19:22.464 INFO kablam! 
Aug 11 01:19:22.482 INFO kablam! error: aborting due to 2 previous errors
Aug 11 01:19:22.482 INFO kablam! 
Aug 11 01:19:22.482 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 01:19:22.498 INFO kablam! error: Could not compile `spin`.
Aug 11 01:19:22.498 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 11 01:19:23.212 INFO kablam! warning: unnecessary `unsafe` block
Aug 11 01:19:23.212 INFO kablam!    --> src/mutex.rs:156:9
Aug 11 01:19:23.212 INFO kablam!     |
Aug 11 01:19:23.212 INFO kablam! 156 |         unsafe { data.into_inner() }
Aug 11 01:19:23.212 INFO kablam!     |         ^^^^^^ unnecessary `unsafe` block
Aug 11 01:19:23.212 INFO kablam!     |
Aug 11 01:19:23.212 INFO kablam!     = note: #[warn(unused_unsafe)] on by default
Aug 11 01:19:23.212 INFO kablam! 
Aug 11 01:19:23.213 INFO kablam! warning: unnecessary `unsafe` block
Aug 11 01:19:23.213 INFO kablam!    --> src/rw_lock.rs:138:9
Aug 11 01:19:23.213 INFO kablam!     |
Aug 11 01:19:23.213 INFO kablam! 138 |         unsafe { data.into_inner() }
Aug 11 01:19:23.213 INFO kablam!     |         ^^^^^^ unnecessary `unsafe` block
Aug 11 01:19:23.213 INFO kablam! 
Aug 11 01:19:23.216 INFO kablam! error[E0635]: unknown feature `const_atomic_usize_new`
Aug 11 01:19:23.216 INFO kablam!  --> src/lib.rs:8:76
Aug 11 01:19:23.216 INFO kablam!   |
Aug 11 01:19:23.216 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Aug 11 01:19:23.216 INFO kablam!   |                                                                            ^^^^^^^^^^^^^^^^^^^^^^
Aug 11 01:19:23.216 INFO kablam! 
Aug 11 01:19:23.216 INFO kablam! error[E0635]: unknown feature `const_unsafe_cell_new`
Aug 11 01:19:23.217 INFO kablam!  --> src/lib.rs:8:53
Aug 11 01:19:23.217 INFO kablam!   |
Aug 11 01:19:23.217 INFO kablam! 8 | #![cfg_attr(feature = "const_fn", feature(const_fn, const_unsafe_cell_new, const_atomic_usize_new))]
Aug 11 01:19:23.217 INFO kablam!   |                                                     ^^^^^^^^^^^^^^^^^^^^^
Aug 11 01:19:23.217 INFO kablam! 
Aug 11 01:19:23.246 INFO kablam! error: aborting due to 2 previous errors
Aug 11 01:19:23.246 INFO kablam! 
Aug 11 01:19:23.246 INFO kablam! For more information about this error, try `rustc --explain E0635`.
Aug 11 01:19:23.254 INFO kablam! error: Could not compile `spin`.
Aug 11 01:19:23.254 INFO kablam! 
Aug 11 01:19:23.254 INFO kablam! To learn more, run the command again with --verbose.
Aug 11 01:19:23.255 INFO kablam! su: No module specific data is present
Aug 11 01:19:24.031 INFO running `"docker" "rm" "-f" "3a5040ceb8a930274cb6ef796daac093fd4fee66f198257bf3b3e7202ea18157"`
Aug 11 01:19:24.170 INFO blam! 3a5040ceb8a930274cb6ef796daac093fd4fee66f198257bf3b3e7202ea18157