Aug 02 10:23:44.707 INFO checking fast-floats-0.1.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 10:23:44.707 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 10:23:44.707 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 10:23:44.707 INFO running `"docker" "create" "-v" "/tmp/crater.mxnHJSlNs4Sd:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2+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 02 10:23:44.930 INFO blam! f8e4f330013d684e6a06416deb2c27a8878d5358aaeee7e20022d359fd5aae52
Aug 02 10:23:44.932 INFO running `"docker" "start" "-a" "f8e4f330013d684e6a06416deb2c27a8878d5358aaeee7e20022d359fd5aae52"`
Aug 02 10:23:46.134 INFO kablam!     Checking fast-floats v0.1.1 (file:///source)
Aug 02 10:23:46.347 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 10:23:46.347 INFO kablam!   --> src/lib.rs:18:1
Aug 02 10:23:46.347 INFO kablam!    |
Aug 02 10:23:46.347 INFO kablam! 18 | #![feature(core_intrinsics)]
Aug 02 10:23:46.347 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 10:23:46.347 INFO kablam! 
Aug 02 10:23:46.347 INFO kablam! error: aborting due to previous error
Aug 02 10:23:46.347 INFO kablam! 
Aug 02 10:23:46.347 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 10:23:46.351 INFO kablam! error: Could not compile `fast-floats`.
Aug 02 10:23:46.351 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 10:23:46.503 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 10:23:46.503 INFO kablam!   --> src/lib.rs:18:1
Aug 02 10:23:46.503 INFO kablam!    |
Aug 02 10:23:46.503 INFO kablam! 18 | #![feature(core_intrinsics)]
Aug 02 10:23:46.503 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 10:23:46.503 INFO kablam! 
Aug 02 10:23:46.504 INFO kablam! error: aborting due to previous error
Aug 02 10:23:46.504 INFO kablam! 
Aug 02 10:23:46.504 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 10:23:46.511 INFO kablam! error: Could not compile `fast-floats`.
Aug 02 10:23:46.511 INFO kablam! 
Aug 02 10:23:46.511 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 10:23:46.512 INFO kablam! su: No module specific data is present
Aug 02 10:23:46.987 INFO running `"docker" "rm" "-f" "f8e4f330013d684e6a06416deb2c27a8878d5358aaeee7e20022d359fd5aae52"`
Aug 02 10:23:47.096 INFO blam! f8e4f330013d684e6a06416deb2c27a8878d5358aaeee7e20022d359fd5aae52