Aug 02 02:30:37.666 INFO checking persistent_rope-0.1.2 against 1.27.2+tmplazy for lazy_static-1
Aug 02 02:30:37.666 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:30:37.666 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:30:37.666 INFO running `"docker" "create" "-v" "/tmp/crater.zzMSNRLnIm2P:/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 02 02:30:37.912 INFO blam! 6a30ab24a2c543c2551e90f24936c4b622ae82303427f78bb25428cc294393d1
Aug 02 02:30:37.914 INFO running `"docker" "start" "-a" "6a30ab24a2c543c2551e90f24936c4b622ae82303427f78bb25428cc294393d1"`
Aug 02 02:30:38.838 INFO kablam!     Checking macro-attr v0.2.0
Aug 02 02:30:38.838 INFO kablam!     Checking bytecount v0.1.7
Aug 02 02:30:38.839 INFO kablam!     Checking persistent_rope v0.1.2 (file:///source)
Aug 02 02:30:38.839 INFO kablam!    Compiling newtype_derive v0.1.6
Aug 02 02:30:39.089 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:30:39.089 INFO kablam!  --> src/lib.rs:1:1
Aug 02 02:30:39.089 INFO kablam!   |
Aug 02 02:30:39.089 INFO kablam! 1 | #![feature(alloc)]
Aug 02 02:30:39.089 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Aug 02 02:30:39.090 INFO kablam! 
Aug 02 02:30:39.094 INFO kablam! error: aborting due to previous error
Aug 02 02:30:39.094 INFO kablam! 
Aug 02 02:30:39.094 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 02:30:39.131 INFO kablam! error: Could not compile `persistent_rope`.
Aug 02 02:30:39.132 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 02:30:40.230 INFO kablam! error: build failed
Aug 02 02:30:40.232 INFO kablam! su: No module specific data is present
Aug 02 02:30:40.911 INFO running `"docker" "rm" "-f" "6a30ab24a2c543c2551e90f24936c4b622ae82303427f78bb25428cc294393d1"`
Aug 02 02:30:41.086 INFO blam! 6a30ab24a2c543c2551e90f24936c4b622ae82303427f78bb25428cc294393d1