Sep 02 01:49:44.086 INFO checking bson-0.10.0 against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Sep 02 01:49:44.086 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Sep 02 01:49:44.086 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-3/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-3/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 01:49:44.254 INFO blam! 6d8241a1fe1a0e67fec0b0c0627902e20a26e2c6bfc164c7d94f67d5c9d2c864
Sep 02 01:49:44.256 INFO running `"docker" "start" "-a" "6d8241a1fe1a0e67fec0b0c0627902e20a26e2c6bfc164c7d94f67d5c9d2c864"`
Sep 02 01:49:45.037 INFO kablam!     Checking bson v0.10.0 (file:///source)
Sep 02 01:49:55.166 INFO kablam! warning: unused variable: `tmp`
Sep 02 01:49:55.166 INFO kablam!  --> examples/test.rs:7:9
Sep 02 01:49:55.166 INFO kablam!   |
Sep 02 01:49:55.166 INFO kablam! 7 |     let tmp = bson::to_bson(&map).unwrap(); 
Sep 02 01:49:55.166 INFO kablam!   |         ^^^ help: consider using `_tmp` instead
Sep 02 01:49:55.166 INFO kablam!   |
Sep 02 01:49:55.166 INFO kablam!   = note: #[warn(unused_variables)] on by default
Sep 02 01:49:55.166 INFO kablam! 
Sep 02 01:49:56.589 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 11.66s
Sep 02 01:49:56.600 INFO kablam! su: No module specific data is present
Sep 02 01:49:57.354 INFO running `"docker" "rm" "-f" "6d8241a1fe1a0e67fec0b0c0627902e20a26e2c6bfc164c7d94f67d5c9d2c864"`
Sep 02 01:49:57.440 INFO blam! 6d8241a1fe1a0e67fec0b0c0627902e20a26e2c6bfc164c7d94f67d5c9d2c864