Sep 18 03:04:37.510 INFO checking bson-0.10.0 against try#cfeeefe83c83bceb55d60d7e2be173db7597ed50 for pr-54033
Sep 18 03:04:37.510 INFO running: cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets
Sep 18 03:04:37.510 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-7/pr-54033/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54033/worker-7/try#cfeeefe83c83bceb55d60d7e2be173db7597ed50:/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=1000" "-e" "CMD=cargo +cfeeefe83c83bceb55d60d7e2be173db7597ed50-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 18 03:04:37.642 INFO blam! 6b3cf6e39328217f42fe1dec2530078dec1e40a14107f3c312c93267f925554f
Sep 18 03:04:37.644 INFO running `"docker" "start" "-a" "6b3cf6e39328217f42fe1dec2530078dec1e40a14107f3c312c93267f925554f"`
Sep 18 03:04:38.380 INFO kablam! usermod: no changes
Sep 18 03:04:38.511 INFO kablam!     Checking bson v0.10.0 (/source)
Sep 18 03:04:42.382 INFO kablam! warning: unused variable: `tmp`
Sep 18 03:04:42.382 INFO kablam!  --> examples/test.rs:7:9
Sep 18 03:04:42.382 INFO kablam!   |
Sep 18 03:04:42.382 INFO kablam! 7 |     let tmp = bson::to_bson(&map).unwrap(); 
Sep 18 03:04:42.382 INFO kablam!   |         ^^^ help: consider using `_tmp` instead
Sep 18 03:04:42.382 INFO kablam!   |
Sep 18 03:04:42.382 INFO kablam!   = note: #[warn(unused_variables)] on by default
Sep 18 03:04:42.382 INFO kablam! 
Sep 18 03:04:44.155 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.75s
Sep 18 03:04:44.163 INFO kablam! su: No module specific data is present
Sep 18 03:04:45.008 INFO running `"docker" "rm" "-f" "6b3cf6e39328217f42fe1dec2530078dec1e40a14107f3c312c93267f925554f"`
Sep 18 03:04:45.067 INFO blam! 6b3cf6e39328217f42fe1dec2530078dec1e40a14107f3c312c93267f925554f