Aug 01 21:15:04.893 INFO checking str_stack-0.1.0 against 1.27.2 for lazy_static-1
Aug 01 21:15:04.893 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:15:04.893 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 21:15:04.893 INFO running `"docker" "create" "-v" "/tmp/crater.1diBeMCd3GRP:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2:/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 21:15:05.087 INFO blam! 4b4b9615736fe59ea73edaa62f8002830c15d4f04933a1745a98ab57bcd43d65
Aug 01 21:15:05.089 INFO running `"docker" "start" "-a" "4b4b9615736fe59ea73edaa62f8002830c15d4f04933a1745a98ab57bcd43d65"`
Aug 01 21:15:06.338 INFO kablam!     Checking str_stack v0.1.0 (file:///source)
Aug 01 21:15:06.887 INFO kablam! warning: unused import: `Read`
Aug 01 21:15:06.887 INFO kablam!   --> src/lib.rs:21:21
Aug 01 21:15:06.887 INFO kablam!    |
Aug 01 21:15:06.887 INFO kablam! 21 | use std::io::{self, Read};
Aug 01 21:15:06.887 INFO kablam!    |                     ^^^^
Aug 01 21:15:06.887 INFO kablam!    |
Aug 01 21:15:06.887 INFO kablam!    = note: #[warn(unused_imports)] on by default
Aug 01 21:15:06.887 INFO kablam! 
Aug 01 21:15:07.049 INFO kablam! warning: unused import: `Read`
Aug 01 21:15:07.049 INFO kablam!   --> src/lib.rs:21:21
Aug 01 21:15:07.049 INFO kablam!    |
Aug 01 21:15:07.049 INFO kablam! 21 | use std::io::{self, Read};
Aug 01 21:15:07.049 INFO kablam!    |                     ^^^^
Aug 01 21:15:07.049 INFO kablam!    |
Aug 01 21:15:07.049 INFO kablam!    = note: #[warn(unused_imports)] on by default
Aug 01 21:15:07.049 INFO kablam! 
Aug 01 21:15:07.186 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 21:15:07.186 INFO kablam!  --> benches/main.rs:1:1
Aug 01 21:15:07.186 INFO kablam!   |
Aug 01 21:15:07.186 INFO kablam! 1 | #![feature(test)]
Aug 01 21:15:07.186 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 01 21:15:07.186 INFO kablam! 
Aug 01 21:15:07.186 INFO kablam! error: aborting due to previous error
Aug 01 21:15:07.186 INFO kablam! 
Aug 01 21:15:07.186 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 21:15:07.191 INFO kablam! error: Could not compile `str_stack`.
Aug 01 21:15:07.191 INFO kablam! 
Aug 01 21:15:07.191 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 21:15:07.192 INFO kablam! su: No module specific data is present
Aug 01 21:15:07.710 INFO running `"docker" "rm" "-f" "4b4b9615736fe59ea73edaa62f8002830c15d4f04933a1745a98ab57bcd43d65"`
Aug 01 21:15:07.882 INFO blam! 4b4b9615736fe59ea73edaa62f8002830c15d4f04933a1745a98ab57bcd43d65