Aug 02 09:25:43.886 INFO checking gcollections-0.3.5 against 1.27.2 for lazy_static-1
Aug 02 09:25:43.886 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 09:25:43.886 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 09:25:43.886 INFO running `"docker" "create" "-v" "/tmp/crater.ZbZJMtGIpkB3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-3/1.27.2:/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 09:25:44.052 INFO blam! 3b04bb7b3e291d67f288b4fb6b9aa382ff821d3106e3f4fc7101b772af18ed38
Aug 02 09:25:44.054 INFO running `"docker" "start" "-a" "3b04bb7b3e291d67f288b4fb6b9aa382ff821d3106e3f4fc7101b772af18ed38"`
Aug 02 09:25:45.537 INFO kablam!     Checking gcollections v0.3.5 (file:///source)
Aug 02 09:25:46.193 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 09:25:46.193 INFO kablam!   --> src/libgcollections/lib.rs:16:1
Aug 02 09:25:46.193 INFO kablam!    |
Aug 02 09:25:46.193 INFO kablam! 16 | #![feature(specialization)]
Aug 02 09:25:46.193 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 09:25:46.194 INFO kablam! 
Aug 02 09:25:46.197 INFO kablam! error: aborting due to previous error
Aug 02 09:25:46.197 INFO kablam! 
Aug 02 09:25:46.197 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 09:25:46.216 INFO kablam! error: Could not compile `gcollections`.
Aug 02 09:25:46.216 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 09:25:46.294 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 09:25:46.294 INFO kablam!   --> src/libgcollections/lib.rs:16:1
Aug 02 09:25:46.294 INFO kablam!    |
Aug 02 09:25:46.294 INFO kablam! 16 | #![feature(specialization)]
Aug 02 09:25:46.294 INFO kablam!    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 02 09:25:46.294 INFO kablam! 
Aug 02 09:25:46.298 INFO kablam! error: aborting due to previous error
Aug 02 09:25:46.299 INFO kablam! 
Aug 02 09:25:46.299 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 09:25:46.309 INFO kablam! error: Could not compile `gcollections`.
Aug 02 09:25:46.310 INFO kablam! 
Aug 02 09:25:46.310 INFO kablam! To learn more, run the command again with --verbose.
Aug 02 09:25:46.311 INFO kablam! su: No module specific data is present
Aug 02 09:25:46.814 INFO running `"docker" "rm" "-f" "3b04bb7b3e291d67f288b4fb6b9aa382ff821d3106e3f4fc7101b772af18ed38"`
Aug 02 09:25:46.902 INFO blam! 3b04bb7b3e291d67f288b4fb6b9aa382ff821d3106e3f4fc7101b772af18ed38