Sep 20 05:55:34.532 INFO checking bson-0.10.0 against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 20 05:55:34.532 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 20 05:55:34.532 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-0/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/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 +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 20 05:55:34.667 INFO blam! 3fc4ac3f8712c703c42d5f7310d27ff9f7c1e124f360b3cabff4621db2c20979
Sep 20 05:55:34.669 INFO running `"docker" "start" "-a" "3fc4ac3f8712c703c42d5f7310d27ff9f7c1e124f360b3cabff4621db2c20979"`
Sep 20 05:55:35.297 INFO kablam! usermod: no changes
Sep 20 05:55:35.381 INFO kablam!     Checking bson v0.10.0 (/source)
Sep 20 05:55:40.126 INFO kablam! warning: unused variable: `tmp`
Sep 20 05:55:40.126 INFO kablam!  --> examples/test.rs:7:9
Sep 20 05:55:40.126 INFO kablam!   |
Sep 20 05:55:40.126 INFO kablam! 7 |     let tmp = bson::to_bson(&map).unwrap(); 
Sep 20 05:55:40.126 INFO kablam!   |         ^^^ help: consider using `_tmp` instead
Sep 20 05:55:40.126 INFO kablam!   |
Sep 20 05:55:40.126 INFO kablam!   = note: #[warn(unused_variables)] on by default
Sep 20 05:55:40.126 INFO kablam! 
Sep 20 05:55:40.847 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 5.53s
Sep 20 05:55:40.857 INFO kablam! su: No module specific data is present
Sep 20 05:55:41.301 INFO running `"docker" "rm" "-f" "3fc4ac3f8712c703c42d5f7310d27ff9f7c1e124f360b3cabff4621db2c20979"`
Sep 20 05:55:41.385 INFO blam! 3fc4ac3f8712c703c42d5f7310d27ff9f7c1e124f360b3cabff4621db2c20979