[INFO] crate splay_tree 0.2.10 is already in cache
[INFO] extracting crate splay_tree 0.2.10 into work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/splay_tree/0.2.10
[INFO] extracting crate splay_tree 0.2.10 into work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/reg/splay_tree/0.2.10
[INFO] validating manifest of splay_tree-0.2.10 on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of splay_tree-0.2.10 on toolchain try#74092351c05ae61047b2be02024415546595e974
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing splay_tree-0.2.10
[INFO] finished frobbing splay_tree-0.2.10
[INFO] frobbed toml for splay_tree-0.2.10 written to work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/reg/splay_tree/0.2.10/Cargo.toml
[INFO] started frobbing splay_tree-0.2.10
[INFO] finished frobbing splay_tree-0.2.10
[INFO] frobbed toml for splay_tree-0.2.10 written to work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/reg/splay_tree/0.2.10/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking splay_tree-0.2.10 against try#74092351c05ae61047b2be02024415546595e974 for pr-60174
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60174/worker-4/try#74092351c05ae61047b2be02024415546595e974:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/reg/splay_tree/0.2.10:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+74092351c05ae61047b2be02024415546595e974-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6938330d0bcb26f75f519c3b46bf5cf938c254c015623ffc2725a102c2d4fc1c
[INFO] running `"docker" "start" "-a" "6938330d0bcb26f75f519c3b46bf5cf938c254c015623ffc2725a102c2d4fc1c"`
[INFO] [stderr]     Checking splay_tree v0.2.10 (/opt/crater/workdir)
[INFO] [stderr] warning: function is never used: `get_middle_splay`
[INFO] [stderr]   --> benches/bench.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn get_middle_splay(b: &mut test::Bencher, num: u32) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
[INFO] running `"docker" "inspect" "6938330d0bcb26f75f519c3b46bf5cf938c254c015623ffc2725a102c2d4fc1c"`
[INFO] running `"docker" "rm" "-f" "6938330d0bcb26f75f519c3b46bf5cf938c254c015623ffc2725a102c2d4fc1c"`
[INFO] [stdout] 6938330d0bcb26f75f519c3b46bf5cf938c254c015623ffc2725a102c2d4fc1c