Dec 19 16:24:29.668 INFO checking green4free/binary_search_tree against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 16:24:29.668 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/green4free/binary_search_tree:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 16:24:30.242 INFO [stdout] 4cc6a5152b3fa8386c9fcb0890ca24f608fe47e1fe619468e0578ec6fb10df45
Dec 19 16:24:30.243 INFO running `"docker" "start" "-a" "4cc6a5152b3fa8386c9fcb0890ca24f608fe47e1fe619468e0578ec6fb10df45"`
Dec 19 16:24:32.228 INFO [stderr]     Checking binary_search_tree v0.1.0 (/opt/crater/workdir)
Dec 19 16:24:32.612 INFO [stderr] warning: unused variable: `data`
Dec 19 16:24:32.612 INFO [stderr]   --> src/main.rs:39:9
Dec 19 16:24:32.612 INFO [stderr]    |
Dec 19 16:24:32.624 INFO [stderr] 39 |             Cons(data, ref left, ref right) => 1 + left.len() + right.len(),
Dec 19 16:24:32.624 INFO [stderr]    |                  ^^^^ help: consider using `_data` instead
Dec 19 16:24:32.624 INFO [stderr]    |
Dec 19 16:24:32.624 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 16:24:32.624 INFO [stderr] 
Dec 19 16:24:32.624 INFO [stderr] warning: unused variable: `data`
Dec 19 16:24:32.624 INFO [stderr]   --> src/main.rs:46:9
Dec 19 16:24:32.624 INFO [stderr]    |
Dec 19 16:24:32.624 INFO [stderr] 46 |             Cons(data, ref left, ref right) => {
Dec 19 16:24:32.624 INFO [stderr]    |                  ^^^^ help: consider using `_data` instead
Dec 19 16:24:32.624 INFO [stderr] 
Dec 19 16:24:32.636 INFO [stderr] warning: unused variable: `data`
Dec 19 16:24:32.636 INFO [stderr]   --> src/main.rs:39:9
Dec 19 16:24:32.636 INFO [stderr]    |
Dec 19 16:24:32.636 INFO [stderr] 39 |             Cons(data, ref left, ref right) => 1 + left.len() + right.len(),
Dec 19 16:24:32.636 INFO [stderr]    |                  ^^^^ help: consider using `_data` instead
Dec 19 16:24:32.640 INFO [stderr]    |
Dec 19 16:24:32.640 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 16:24:32.640 INFO [stderr] 
Dec 19 16:24:32.640 INFO [stderr] warning: unused variable: `data`
Dec 19 16:24:32.640 INFO [stderr]   --> src/main.rs:46:9
Dec 19 16:24:32.640 INFO [stderr]    |
Dec 19 16:24:32.640 INFO [stderr] 46 |             Cons(data, ref left, ref right) => {
Dec 19 16:24:32.640 INFO [stderr]    |                  ^^^^ help: consider using `_data` instead
Dec 19 16:24:32.640 INFO [stderr] 
Dec 19 16:24:32.726 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.53s
Dec 19 16:24:33.834 INFO running `"docker" "inspect" "4cc6a5152b3fa8386c9fcb0890ca24f608fe47e1fe619468e0578ec6fb10df45"`
Dec 19 16:24:34.212 INFO running `"docker" "rm" "-f" "4cc6a5152b3fa8386c9fcb0890ca24f608fe47e1fe619468e0578ec6fb10df45"`
Dec 19 16:24:34.524 INFO [stdout] 4cc6a5152b3fa8386c9fcb0890ca24f608fe47e1fe619468e0578ec6fb10df45