Aug 02 10:28:29.661 INFO checking exprtk_rs-0.0.5 against 1.27.2+tmplazy for lazy_static-1 Aug 02 10:28:29.661 INFO running: cargo +1.27.2 check --frozen --all --all-targets Aug 02 10:28:29.661 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets Aug 02 10:28:29.661 INFO running `"docker" "create" "-v" "/tmp/crater.SAN7SwRibye8:/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 02 10:28:29.891 INFO blam! d53daeb070ae7b6b7c037262466575177a02f711b120e1986d39eb0023caac44 Aug 02 10:28:29.894 INFO running `"docker" "start" "-a" "d53daeb070ae7b6b7c037262466575177a02f711b120e1986d39eb0023caac44"` Aug 02 10:28:30.833 INFO kablam! Compiling exprtk_sys v0.0.5 Aug 02 10:29:30.256 INFO kablam! Checking exprtk_rs v0.0.5 (file:///source) Aug 02 10:29:32.712 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel Aug 02 10:29:32.712 INFO kablam! --> benches/benches.rs:1:1 Aug 02 10:29:32.712 INFO kablam! | Aug 02 10:29:32.712 INFO kablam! 1 | #![feature(test)] Aug 02 10:29:32.713 INFO kablam! | ^^^^^^^^^^^^^^^^^ Aug 02 10:29:32.713 INFO kablam! Aug 02 10:29:32.714 INFO kablam! error: aborting due to previous error Aug 02 10:29:32.714 INFO kablam! Aug 02 10:29:32.714 INFO kablam! For more information about this error, try `rustc --explain E0554`. Aug 02 10:29:32.722 INFO kablam! error: Could not compile `exprtk_rs`. Aug 02 10:29:32.723 INFO kablam! Aug 02 10:29:32.723 INFO kablam! To learn more, run the command again with --verbose. Aug 02 10:29:32.724 INFO kablam! su: No module specific data is present Aug 02 10:29:33.402 INFO running `"docker" "rm" "-f" "d53daeb070ae7b6b7c037262466575177a02f711b120e1986d39eb0023caac44"` Aug 02 10:29:33.561 INFO blam! d53daeb070ae7b6b7c037262466575177a02f711b120e1986d39eb0023caac44