Aug 01 22:19:49.899 INFO checking shell_helper-0.2.12 against 1.27.2 for lazy_static-1
Aug 01 22:19:49.899 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:19:49.899 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 01 22:19:49.899 INFO running `"docker" "create" "-v" "/tmp/crater.l7t4sT6LK5Ff:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-5/1.27.2:/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 22:19:50.126 INFO blam! 2bac4347dfcf3d90de01e78a4db3c137f4163670ce8e01b44bd85d9a2fb4f6f3
Aug 01 22:19:50.135 INFO running `"docker" "start" "-a" "2bac4347dfcf3d90de01e78a4db3c137f4163670ce8e01b44bd85d9a2fb4f6f3"`
Aug 01 22:19:51.320 INFO kablam!     Checking shell_helper v0.2.12 (file:///source)
Aug 01 22:19:52.916 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:19:52.916 INFO kablam!  --> src/lib.rs:3:1
Aug 01 22:19:52.916 INFO kablam!   |
Aug 01 22:19:52.916 INFO kablam! 3 | #![feature(range_contains)]
Aug 01 22:19:52.916 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 22:19:52.916 INFO kablam! 
Aug 01 22:19:52.916 INFO kablam! error: aborting due to previous error
Aug 01 22:19:52.916 INFO kablam! 
Aug 01 22:19:52.916 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:19:52.925 INFO kablam! error: Could not compile `shell_helper`.
Aug 01 22:19:52.926 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 01 22:19:53.076 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 01 22:19:53.076 INFO kablam!  --> src/lib.rs:3:1
Aug 01 22:19:53.076 INFO kablam!   |
Aug 01 22:19:53.076 INFO kablam! 3 | #![feature(range_contains)]
Aug 01 22:19:53.077 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 01 22:19:53.077 INFO kablam! 
Aug 01 22:19:53.077 INFO kablam! error: aborting due to previous error
Aug 01 22:19:53.077 INFO kablam! 
Aug 01 22:19:53.077 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 01 22:19:53.104 INFO kablam! error: Could not compile `shell_helper`.
Aug 01 22:19:53.104 INFO kablam! 
Aug 01 22:19:53.104 INFO kablam! To learn more, run the command again with --verbose.
Aug 01 22:19:53.106 INFO kablam! su: No module specific data is present
Aug 01 22:19:53.730 INFO running `"docker" "rm" "-f" "2bac4347dfcf3d90de01e78a4db3c137f4163670ce8e01b44bd85d9a2fb4f6f3"`
Aug 01 22:19:53.876 INFO blam! 2bac4347dfcf3d90de01e78a4db3c137f4163670ce8e01b44bd85d9a2fb4f6f3