Aug 01 22:27:32.889 INFO checking sfmt-0.3.0 against 1.27.2+tmplazy for lazy_static-1
Aug 01 22:27:32.889 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:27:32.889 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:27:32.890 INFO running `"docker" "create" "-v" "/tmp/crater.aMFBgxrtnaGC:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-6/1.27.2+tmplazy:/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 +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 01 22:27:33.182 INFO blam! 3abca31c9d5fe7764db1179550095feccde5a03620c4382a53e8bd464bf49b7b
Aug 01 22:27:33.185 INFO running `"docker" "start" "-a" "3abca31c9d5fe7764db1179550095feccde5a03620c4382a53e8bd464bf49b7b"`
Aug 01 22:27:34.562 INFO kablam!     Checking rand_core v0.2.1
Aug 01 22:27:35.485 INFO kablam!     Checking rand v0.5.4
Aug 01 22:27:41.256 INFO kablam!     Checking sfmt v0.3.0 (file:///source)
Aug 01 22:27:41.678 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:27:41.678 INFO kablam!   --> src/lib.rs:15:1
Aug 01 22:27:41.678 INFO kablam!    |
Aug 01 22:27:41.678 INFO kablam! 15 | #![feature(stdsimd)]
Aug 01 22:27:41.678 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^
Aug 01 22:27:41.684 INFO kablam! 
Aug 01 22:27:41.685 INFO kablam! error: aborting due to previous error
Aug 01 22:27:41.686 INFO kablam! 
Aug 01 22:27:41.686 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:27:41.694 INFO kablam! error: Could not compile `sfmt`.
Aug 01 22:27:41.694 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 22:27:41.835 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:27:41.835 INFO kablam!   --> src/lib.rs:15:1
Aug 01 22:27:41.835 INFO kablam!    |
Aug 01 22:27:41.835 INFO kablam! 15 | #![feature(stdsimd)]
Aug 01 22:27:41.835 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^
Aug 01 22:27:41.835 INFO kablam! 
Aug 01 22:27:41.835 INFO kablam! error: aborting due to previous error
Aug 01 22:27:41.835 INFO kablam! 
Aug 01 22:27:41.835 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:27:41.847 INFO kablam! error: Could not compile `sfmt`.
Aug 01 22:27:41.847 INFO kablam! 
Aug 01 22:27:41.847 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 22:27:41.849 INFO kablam! su: No module specific data is present
Aug 01 22:27:42.762 INFO running `"docker" "rm" "-f" "3abca31c9d5fe7764db1179550095feccde5a03620c4382a53e8bd464bf49b7b"`
Aug 01 22:27:42.940 INFO blam! 3abca31c9d5fe7764db1179550095feccde5a03620c4382a53e8bd464bf49b7b