Aug 11 18:47:33.670 INFO checking bson-0.10.0 against master#f6d43ed84207c7e58f363f46e5a438ff40f2b311 for libc-1
Aug 11 18:47:33.670 INFO running: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 18:47:33.670 INFO creating container for: cargo +f6d43ed84207c7e58f363f46e5a438ff40f2b311-alt check --frozen --all --all-targets
Aug 11 18:47:33.670 INFO running `"docker" "create" "-v" "/tmp/crater.vJTezrWF00ve:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/libc-1/worker-4/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 18:47:33.864 INFO blam! 7cc63980c4b44038fff893188597e8956d5710fb7b48a519af993af9c1bcfd99
Aug 11 18:47:33.870 INFO running `"docker" "start" "-a" "7cc63980c4b44038fff893188597e8956d5710fb7b48a519af993af9c1bcfd99"`
Aug 11 18:47:35.030 INFO kablam!     Checking bson v0.10.0 (file:///source)
Aug 11 18:47:46.206 INFO kablam! warning: unused variable: `tmp`
Aug 11 18:47:46.206 INFO kablam!  --> examples/test.rs:7:9
Aug 11 18:47:46.206 INFO kablam!   |
Aug 11 18:47:46.206 INFO kablam! 7 |     let tmp = bson::to_bson(&map).unwrap(); 
Aug 11 18:47:46.206 INFO kablam!   |         ^^^ help: consider using `_tmp` instead
Aug 11 18:47:46.207 INFO kablam!   |
Aug 11 18:47:46.207 INFO kablam!   = note: #[warn(unused_variables)] on by default
Aug 11 18:47:46.207 INFO kablam! 
Aug 11 18:47:47.699 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 12.81s
Aug 11 18:47:47.711 INFO kablam! su: No module specific data is present
Aug 11 18:47:48.742 INFO running `"docker" "rm" "-f" "7cc63980c4b44038fff893188597e8956d5710fb7b48a519af993af9c1bcfd99"`
Aug 11 18:47:48.845 INFO blam! 7cc63980c4b44038fff893188597e8956d5710fb7b48a519af993af9c1bcfd99