Aug 01 19:47:22.239 INFO checking two_three-0.0.6 against 1.27.2+tmplazy for lazy_static-1
Aug 01 19:47:22.239 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 19:47:22.239 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 19:47:22.239 INFO running `"docker" "create" "-v" "/tmp/crater.OJ025lqzgPbD:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-7/1.27.2+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 19:47:22.505 INFO blam! 3d9db9f469aac0dd50f7acf13f48ad41d4bf6c1f9d5b593422c5fcb49426f69a
Aug 01 19:47:22.505 INFO running `"docker" "start" "-a" "3d9db9f469aac0dd50f7acf13f48ad41d4bf6c1f9d5b593422c5fcb49426f69a"`
Aug 01 19:47:23.450 INFO kablam!     Checking two_three v0.0.6 (file:///source)
Aug 01 19:47:24.424 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 19:47:24.424 INFO kablam!  --> tests/test_tree.rs:1:1
Aug 01 19:47:24.424 INFO kablam!   |
Aug 01 19:47:24.424 INFO kablam! 1 | #![feature(box_patterns)]
Aug 01 19:47:24.424 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 19:47:24.424 INFO kablam! 
Aug 01 19:47:24.424 INFO kablam! error: aborting due to previous error
Aug 01 19:47:24.424 INFO kablam! 
Aug 01 19:47:24.424 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 19:47:24.431 INFO kablam! error: Could not compile `two_three`.
Aug 01 19:47:24.431 INFO kablam! 
Aug 01 19:47:24.431 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 19:47:24.438 INFO kablam! su: No module specific data is present
Aug 01 19:47:25.055 INFO running `"docker" "rm" "-f" "3d9db9f469aac0dd50f7acf13f48ad41d4bf6c1f9d5b593422c5fcb49426f69a"`
Aug 01 19:47:25.140 INFO blam! 3d9db9f469aac0dd50f7acf13f48ad41d4bf6c1f9d5b593422c5fcb49426f69a