Sep 10 21:54:32.560 INFO checking bson-0.13.0 against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 21:54:32.560 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 21:54:32.560 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-3/try#3a2610c2a16575649896925631bf8cec4f4b1961:/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 +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 21:54:32.689 INFO blam! 44eb87f55de0391c67715333ecebd757fe67efa6397e582d49bd5277367ddf06
Sep 10 21:54:32.691 INFO running `"docker" "start" "-a" "44eb87f55de0391c67715333ecebd757fe67efa6397e582d49bd5277367ddf06"`
Sep 10 21:54:33.810 INFO kablam! usermod: no changes
Sep 10 21:54:33.930 INFO kablam!     Checking bson v0.13.0 (file:///source)
Sep 10 21:54:37.163 INFO kablam! warning: unused variable: `tmp`
Sep 10 21:54:37.163 INFO kablam!  --> examples/test.rs:7:9
Sep 10 21:54:37.163 INFO kablam!   |
Sep 10 21:54:37.163 INFO kablam! 7 |     let tmp = bson::to_bson(&map).unwrap();
Sep 10 21:54:37.163 INFO kablam!   |         ^^^ help: consider using `_tmp` instead
Sep 10 21:54:37.163 INFO kablam!   |
Sep 10 21:54:37.163 INFO kablam!   = note: #[warn(unused_variables)] on by default
Sep 10 21:54:37.163 INFO kablam! 
Sep 10 21:54:38.298 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 4.46s
Sep 10 21:54:38.338 INFO kablam! su: No module specific data is present
Sep 10 21:54:39.183 INFO running `"docker" "rm" "-f" "44eb87f55de0391c67715333ecebd757fe67efa6397e582d49bd5277367ddf06"`
Sep 10 21:54:39.320 INFO blam! 44eb87f55de0391c67715333ecebd757fe67efa6397e582d49bd5277367ddf06