Aug 02 13:46:54.164 INFO checking bson-0.12.2 against 1.27.2 for lazy_static-1
Aug 02 13:46:54.164 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:46:54.164 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 13:46:54.164 INFO running `"docker" "create" "-v" "/tmp/crater.NijT6HuDIxXH:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-1/1.27.2:/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 +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 02 13:46:54.350 INFO blam! 9b23147591fe2e68329c02b6b0dc858b1ebed8428e55e8604291b7c1c25bd45e
Aug 02 13:46:54.352 INFO running `"docker" "start" "-a" "9b23147591fe2e68329c02b6b0dc858b1ebed8428e55e8604291b7c1c25bd45e"`
Aug 02 13:46:55.512 INFO kablam!     Checking bson v0.12.2 (file:///source)
Aug 02 13:47:03.629 INFO kablam! warning: unused variable: `tmp`
Aug 02 13:47:03.629 INFO kablam!  --> examples/test.rs:7:9
Aug 02 13:47:03.629 INFO kablam!   |
Aug 02 13:47:03.629 INFO kablam! 7 |     let tmp = bson::to_bson(&map).unwrap();
Aug 02 13:47:03.629 INFO kablam!   |         ^^^ help: consider using `_tmp` instead
Aug 02 13:47:03.630 INFO kablam!   |
Aug 02 13:47:03.630 INFO kablam!   = note: #[warn(unused_variables)] on by default
Aug 02 13:47:03.630 INFO kablam! 
Aug 02 13:47:06.483 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 11.06s
Aug 02 13:47:06.500 INFO kablam! su: No module specific data is present
Aug 02 13:47:07.118 INFO running `"docker" "rm" "-f" "9b23147591fe2e68329c02b6b0dc858b1ebed8428e55e8604291b7c1c25bd45e"`
Aug 02 13:47:07.300 INFO blam! 9b23147591fe2e68329c02b6b0dc858b1ebed8428e55e8604291b7c1c25bd45e