Sep 20 04:16:05.386 INFO checking bson-0.13.0 against master#ff6422d7a392acfc8af28994d65af2bbaecea4f6 for pr-54346
Sep 20 04:16:05.386 INFO running: cargo +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets
Sep 20 04:16:05.386 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54346/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54346/worker-6/master#ff6422d7a392acfc8af28994d65af2bbaecea4f6:/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 +ff6422d7a392acfc8af28994d65af2bbaecea4f6-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 04:16:05.496 INFO blam! 345777165a1d02e1863f5bba789caa43e8eb8f0ca076815256daf1a39bea1533
Sep 20 04:16:05.497 INFO running `"docker" "start" "-a" "345777165a1d02e1863f5bba789caa43e8eb8f0ca076815256daf1a39bea1533"`
Sep 20 04:16:06.491 INFO kablam! usermod: no changes
Sep 20 04:16:06.581 INFO kablam!     Checking bson v0.13.0 (/source)
Sep 20 04:16:11.918 INFO kablam! warning: unused variable: `tmp`
Sep 20 04:16:11.918 INFO kablam!  --> examples/test.rs:7:9
Sep 20 04:16:11.918 INFO kablam!   |
Sep 20 04:16:11.918 INFO kablam! 7 |     let tmp = bson::to_bson(&map).unwrap();
Sep 20 04:16:11.918 INFO kablam!   |         ^^^ help: consider using `_tmp` instead
Sep 20 04:16:11.918 INFO kablam!   |
Sep 20 04:16:11.918 INFO kablam!   = note: #[warn(unused_variables)] on by default
Sep 20 04:16:11.918 INFO kablam! 
Sep 20 04:16:12.713 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 6.20s
Sep 20 04:16:12.722 INFO kablam! su: No module specific data is present
Sep 20 04:16:13.327 INFO running `"docker" "rm" "-f" "345777165a1d02e1863f5bba789caa43e8eb8f0ca076815256daf1a39bea1533"`
Sep 20 04:16:13.513 INFO blam! 345777165a1d02e1863f5bba789caa43e8eb8f0ca076815256daf1a39bea1533