Aug 02 14:32:34.646 INFO checking attr-0.1.0 against 1.27.2 for lazy_static-1
Aug 02 14:32:34.647 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:32:34.647 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 14:32:34.647 INFO running `"docker" "create" "-v" "/tmp/crater.Oc6w31eyjzcg:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2:/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 02 14:32:34.864 INFO blam! 136fce0e805e61447f2df2130798aef09bdaefe4fb65296fafb6199c705723d6
Aug 02 14:32:34.865 INFO running `"docker" "start" "-a" "136fce0e805e61447f2df2130798aef09bdaefe4fb65296fafb6199c705723d6"`
Aug 02 14:32:36.016 INFO kablam! warning: only one of `license` or `license-file` is necessary
Aug 02 14:32:36.089 INFO kablam!     Checking attr v0.1.0 (file:///source)
Aug 02 14:32:38.268 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 14:32:38.268 INFO kablam!  --> benches/access_bench.rs:1:1
Aug 02 14:32:38.268 INFO kablam!   |
Aug 02 14:32:38.268 INFO kablam! 1 | #![feature(test)]
Aug 02 14:32:38.268 INFO kablam!   | ^^^^^^^^^^^^^^^^^
Aug 02 14:32:38.268 INFO kablam! 
Aug 02 14:32:38.270 INFO kablam! warning: variable does not need to be mutable
Aug 02 14:32:38.270 INFO kablam!    --> tests/simple.rs:108:9
Aug 02 14:32:38.270 INFO kablam!     |
Aug 02 14:32:38.270 INFO kablam! 108 |     let mut batz = Bar::attrs().batz.get(&mut f);
Aug 02 14:32:38.270 INFO kablam!     |         ----^^^^
Aug 02 14:32:38.270 INFO kablam!     |         |
Aug 02 14:32:38.270 INFO kablam!     |         help: remove this `mut`
Aug 02 14:32:38.271 INFO kablam!     |
Aug 02 14:32:38.271 INFO kablam!     = note: #[warn(unused_mut)] on by default
Aug 02 14:32:38.272 INFO kablam! 
Aug 02 14:32:38.281 INFO kablam! error: aborting due to previous error
Aug 02 14:32:38.281 INFO kablam! 
Aug 02 14:32:38.281 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 14:32:38.297 INFO kablam! error: Could not compile `attr`.
Aug 02 14:32:38.298 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 14:32:39.008 INFO kablam! warning: variable does not need to be mutable
Aug 02 14:32:39.008 INFO kablam!    --> tests/nested.rs:252:13
Aug 02 14:32:39.008 INFO kablam!     |
Aug 02 14:32:39.008 INFO kablam! 252 |         let mut x: &mut i32 = foo::Numbers.at(&mut f, 1);
Aug 02 14:32:39.008 INFO kablam!     |             ----^
Aug 02 14:32:39.008 INFO kablam!     |             |
Aug 02 14:32:39.008 INFO kablam!     |             help: remove this `mut`
Aug 02 14:32:39.009 INFO kablam!     |
Aug 02 14:32:39.009 INFO kablam!     = note: #[warn(unused_mut)] on by default
Aug 02 14:32:39.009 INFO kablam! 
Aug 02 14:32:39.148 INFO kablam! error: build failed
Aug 02 14:32:39.150 INFO kablam! su: No module specific data is present
Aug 02 14:32:40.134 INFO running `"docker" "rm" "-f" "136fce0e805e61447f2df2130798aef09bdaefe4fb65296fafb6199c705723d6"`
Aug 02 14:32:40.291 INFO blam! 136fce0e805e61447f2df2130798aef09bdaefe4fb65296fafb6199c705723d6