Aug 11 05:06:20.599 INFO checking rbtree-0.1.5 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 11 05:06:20.599 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 05:06:20.599 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 05:06:20.599 INFO running `"docker" "create" "-v" "/tmp/crater.5DaRH4640ToR:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-7/master#f6d43ed84207c7e58f363f46e5a438ff40f2b311:/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 +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "crater"`
Aug 11 05:06:20.800 INFO blam! a2446e295420885a8457ea7a08a5b2ad1c0c0b98859da5a922e17ae763d78e2d
Aug 11 05:06:20.802 INFO running `"docker" "start" "-a" "a2446e295420885a8457ea7a08a5b2ad1c0c0b98859da5a922e17ae763d78e2d"`
Aug 11 05:06:21.981 INFO kablam!     Checking rbtree v0.1.5 (file:///source)
Aug 11 05:06:22.324 INFO kablam! warning: unused import: `super::RBTree`
Aug 11 05:06:22.324 INFO kablam!     --> src/lib.rs:1404:9
Aug 11 05:06:22.324 INFO kablam!      |
Aug 11 05:06:22.324 INFO kablam! 1404 |     use super::RBTree;
Aug 11 05:06:22.324 INFO kablam!      |         ^^^^^^^^^^^^^
Aug 11 05:06:22.324 INFO kablam!      |
Aug 11 05:06:22.324 INFO kablam!      = note: #[warn(unused_imports)] on by default
Aug 11 05:06:22.324 INFO kablam! 
Aug 11 05:06:24.305 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 2.36s
Aug 11 05:06:24.308 INFO kablam! su: No module specific data is present
Aug 11 05:06:24.869 INFO running `"docker" "rm" "-f" "a2446e295420885a8457ea7a08a5b2ad1c0c0b98859da5a922e17ae763d78e2d"`
Aug 11 05:06:24.981 INFO blam! a2446e295420885a8457ea7a08a5b2ad1c0c0b98859da5a922e17ae763d78e2d