Aug 02 04:14:51.777 INFO checking mockers-0.12.1 against 1.27.2+tmplazy for lazy_static-1
Aug 02 04:14:51.777 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:14:51.777 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:14:51.777 INFO running `"docker" "create" "-v" "/tmp/crater.eSIiXRHtzhfS:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-5/1.27.2+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 04:14:52.074 INFO blam! 83b651ba822c17fde26d8c5ab601d1ce3f9354214cf68813c09bbcbda0926846
Aug 02 04:14:52.076 INFO running `"docker" "start" "-a" "83b651ba822c17fde26d8c5ab601d1ce3f9354214cf68813c09bbcbda0926846"`
Aug 02 04:14:53.199 INFO kablam!    Compiling itertools v0.4.19
Aug 02 04:14:53.208 INFO kablam!     Checking mockers v0.12.1 (file:///source)
Aug 02 04:14:53.739 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:14:53.739 INFO kablam!  --> src/lib.rs:1:1
Aug 02 04:14:53.739 INFO kablam!   |
Aug 02 04:14:53.739 INFO kablam! 1 | / #![feature(fnbox, inclusive_range_methods, alloc, collections_range,
Aug 02 04:14:53.739 INFO kablam! 2 | |            inclusive_range, inclusive_range_fields, specialization)]
Aug 02 04:14:53.739 INFO kablam!   | |____________________________________________________________________^
Aug 02 04:14:53.748 INFO kablam! 
Aug 02 04:14:53.755 INFO kablam! error: aborting due to previous error
Aug 02 04:14:53.756 INFO kablam! 
Aug 02 04:14:53.756 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:14:53.774 INFO kablam! error: Could not compile `mockers`.
Aug 02 04:14:53.774 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 04:14:56.610 INFO kablam! error: build failed
Aug 02 04:14:56.612 INFO kablam! su: No module specific data is present
Aug 02 04:14:57.418 INFO running `"docker" "rm" "-f" "83b651ba822c17fde26d8c5ab601d1ce3f9354214cf68813c09bbcbda0926846"`
Aug 02 04:14:57.574 INFO blam! 83b651ba822c17fde26d8c5ab601d1ce3f9354214cf68813c09bbcbda0926846