Aug 02 02:33:01.689 INFO checking peg-syntax-ext-0.4.2 against 1.27.2 for lazy_static-1
Aug 02 02:33:01.689 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:33:01.689 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:33:01.689 INFO running `"docker" "create" "-v" "/tmp/crater.wvpBHVohbc2d:/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 02 02:33:01.851 INFO blam! e4382fcea7c96a2a23eb21cbbb6632bc72862ddd855d485a625557e7a0ad22de
Aug 02 02:33:01.853 INFO running `"docker" "start" "-a" "e4382fcea7c96a2a23eb21cbbb6632bc72862ddd855d485a625557e7a0ad22de"`
Aug 02 02:33:02.763 INFO kablam!    Compiling peg v0.4.0
Aug 02 02:33:06.281 INFO kablam!     Checking peg-syntax-ext v0.4.2 (file:///source)
Aug 02 02:33:11.298 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:33:11.298 INFO kablam!  --> lib.rs:1:1
Aug 02 02:33:11.298 INFO kablam!   |
Aug 02 02:33:11.298 INFO kablam! 1 | #![feature(plugin_registrar, quote, rustc_private, box_patterns)]
Aug 02 02:33:11.298 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:33:11.298 INFO kablam! 
Aug 02 02:33:11.299 INFO kablam! error: aborting due to previous error
Aug 02 02:33:11.299 INFO kablam! 
Aug 02 02:33:11.300 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 02:33:11.317 INFO kablam! error: Could not compile `peg-syntax-ext`.
Aug 02 02:33:11.317 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 02:33:11.424 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:33:11.424 INFO kablam!  --> lib.rs:1:1
Aug 02 02:33:11.424 INFO kablam!   |
Aug 02 02:33:11.424 INFO kablam! 1 | #![feature(plugin_registrar, quote, rustc_private, box_patterns)]
Aug 02 02:33:11.424 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:33:11.424 INFO kablam! 
Aug 02 02:33:11.430 INFO kablam! error: aborting due to previous error
Aug 02 02:33:11.430 INFO kablam! 
Aug 02 02:33:11.431 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 02:33:11.529 INFO kablam! error: Could not compile `peg-syntax-ext`.
Aug 02 02:33:11.529 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 02:33:12.603 INFO kablam! error: build failed
Aug 02 02:33:12.604 INFO kablam! su: No module specific data is present
Aug 02 02:33:13.551 INFO running `"docker" "rm" "-f" "e4382fcea7c96a2a23eb21cbbb6632bc72862ddd855d485a625557e7a0ad22de"`
Aug 02 02:33:13.667 INFO blam! e4382fcea7c96a2a23eb21cbbb6632bc72862ddd855d485a625557e7a0ad22de