Sep 02 19:21:52.825 INFO checking bson-0.13.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53851
Sep 02 19:21:52.825 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 02 19:21:52.825 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-2/pr-53851/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53851/worker-2/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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" "-e" "USER_ID=500" "-e" "CMD=cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 02 19:21:53.005 INFO blam! 58c8aed3ac7d309ad1d202d6f8b65a60e785a2b5c91cb8a48992781a1a89b8c0
Sep 02 19:21:53.008 INFO running `"docker" "start" "-a" "58c8aed3ac7d309ad1d202d6f8b65a60e785a2b5c91cb8a48992781a1a89b8c0"`
Sep 02 19:21:53.655 INFO kablam!     Checking bson v0.13.0 (file:///source)
Sep 02 19:22:03.977 INFO kablam! warning: unused variable: `tmp`
Sep 02 19:22:03.977 INFO kablam!  --> examples/test.rs:7:9
Sep 02 19:22:03.978 INFO kablam!   |
Sep 02 19:22:03.978 INFO kablam! 7 |     let tmp = bson::to_bson(&map).unwrap();
Sep 02 19:22:03.978 INFO kablam!   |         ^^^ help: consider using `_tmp` instead
Sep 02 19:22:03.978 INFO kablam!   |
Sep 02 19:22:03.978 INFO kablam!   = note: #[warn(unused_variables)] on by default
Sep 02 19:22:03.978 INFO kablam! 
Sep 02 19:22:05.851 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 12.27s
Sep 02 19:22:05.862 INFO kablam! su: No module specific data is present
Sep 02 19:22:06.229 INFO running `"docker" "rm" "-f" "58c8aed3ac7d309ad1d202d6f8b65a60e785a2b5c91cb8a48992781a1a89b8c0"`
Sep 02 19:22:06.340 INFO blam! 58c8aed3ac7d309ad1d202d6f8b65a60e785a2b5c91cb8a48992781a1a89b8c0