Aug 02 02:59:41.747 INFO checking optra-0.2.1 against 1.27.2 for lazy_static-1
Aug 02 02:59:41.747 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:59:41.748 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 02:59:41.748 INFO running `"docker" "create" "-v" "/tmp/crater.Z0ucWMwBWvm6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-0/1.27.2:/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 02:59:41.983 INFO blam! 1dd8efb358eaad0ba79c9c3e9fa6e860e0a2e30b59caf3e7576c5f653b137a18
Aug 02 02:59:41.985 INFO running `"docker" "start" "-a" "1dd8efb358eaad0ba79c9c3e9fa6e860e0a2e30b59caf3e7576c5f653b137a18"`
Aug 02 02:59:43.249 INFO kablam!     Checking rdiff v0.1.2
Aug 02 02:59:44.888 INFO kablam!     Checking optra v0.2.1 (file:///source)
Aug 02 02:59:45.665 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:59:45.666 INFO kablam!   --> src/lib.rs:63:1
Aug 02 02:59:45.666 INFO kablam!    |
Aug 02 02:59:45.666 INFO kablam! 63 | #![feature(linked_list_extras)]
Aug 02 02:59:45.666 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:59:45.666 INFO kablam! 
Aug 02 02:59:45.671 INFO kablam! error: aborting due to previous error
Aug 02 02:59:45.671 INFO kablam! 
Aug 02 02:59:45.671 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 02:59:45.680 INFO kablam! error: Could not compile `optra`.
Aug 02 02:59:45.680 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 02:59:46.127 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 02:59:46.127 INFO kablam!   --> src/lib.rs:63:1
Aug 02 02:59:46.127 INFO kablam!    |
Aug 02 02:59:46.127 INFO kablam! 63 | #![feature(linked_list_extras)]
Aug 02 02:59:46.127 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 02:59:46.127 INFO kablam! 
Aug 02 02:59:46.135 INFO kablam! error: aborting due to previous error
Aug 02 02:59:46.135 INFO kablam! 
Aug 02 02:59:46.135 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 02:59:46.148 INFO kablam! error: Could not compile `optra`.
Aug 02 02:59:46.148 INFO kablam! 
Aug 02 02:59:46.148 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 02:59:46.150 INFO kablam! su: No module specific data is present
Aug 02 02:59:46.828 INFO running `"docker" "rm" "-f" "1dd8efb358eaad0ba79c9c3e9fa6e860e0a2e30b59caf3e7576c5f653b137a18"`
Aug 02 02:59:46.981 INFO blam! 1dd8efb358eaad0ba79c9c3e9fa6e860e0a2e30b59caf3e7576c5f653b137a18