Dec 18 18:02:21.422 INFO checking bson-0.13.0 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 18:02:21.422 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-2/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/reg/bson/0.13.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 18:02:21.634 INFO [stdout] 298cdb15121398216f5430bfb9f808f82ff77eb3007f3f417c117f2b75c3a3d3
Dec 18 18:02:21.637 INFO running `"docker" "start" "-a" "298cdb15121398216f5430bfb9f808f82ff77eb3007f3f417c117f2b75c3a3d3"`
Dec 18 18:02:22.456 INFO [stderr]     Checking bson v0.13.0 (/opt/crater/workdir)
Dec 18 18:02:24.872 INFO [stderr] warning: unused variable: `tmp`
Dec 18 18:02:24.872 INFO [stderr]  --> examples/test.rs:7:9
Dec 18 18:02:24.872 INFO [stderr]   |
Dec 18 18:02:24.872 INFO [stderr] 7 |     let tmp = bson::to_bson(&map).unwrap();
Dec 18 18:02:24.872 INFO [stderr]   |         ^^^ help: consider using `_tmp` instead
Dec 18 18:02:24.872 INFO [stderr]   |
Dec 18 18:02:24.872 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 18 18:02:24.872 INFO [stderr] 
Dec 18 18:02:25.688 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.31s
Dec 18 18:02:26.143 INFO running `"docker" "inspect" "298cdb15121398216f5430bfb9f808f82ff77eb3007f3f417c117f2b75c3a3d3"`
Dec 18 18:02:26.344 INFO running `"docker" "rm" "-f" "298cdb15121398216f5430bfb9f808f82ff77eb3007f3f417c117f2b75c3a3d3"`
Dec 18 18:02:26.465 INFO [stdout] 298cdb15121398216f5430bfb9f808f82ff77eb3007f3f417c117f2b75c3a3d3