Dec 18 16:26:15.652 INFO checking fn_block-0.2.1 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 16:26:15.652 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-0/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/fn_block/0.2.1:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 16:26:15.973 INFO [stdout] ae1dfa1d210345f0f6d9743016dae6396967dde4a6fec2dd4878058c959a93e1
Dec 18 16:26:15.978 INFO running `"docker" "start" "-a" "ae1dfa1d210345f0f6d9743016dae6396967dde4a6fec2dd4878058c959a93e1"`
Dec 18 16:26:16.796 INFO [stderr]     Checking fn_block v0.2.1 (/opt/crater/workdir)
Dec 18 16:26:18.626 INFO [stderr] warning: unused variable: `s`
Dec 18 16:26:18.626 INFO [stderr]   --> benches/fn_block_benchmark.rs:10:9
Dec 18 16:26:18.626 INFO [stderr]    |
Dec 18 16:26:18.626 INFO [stderr] 10 |     let s = o.and_then(|st| st.get(0..3)).map(|st| st.to_lowercase());
Dec 18 16:26:18.626 INFO [stderr]    |         ^ help: consider using `_s` instead
Dec 18 16:26:18.626 INFO [stderr]    |
Dec 18 16:26:18.626 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 16:26:18.626 INFO [stderr] 
Dec 18 16:26:18.626 INFO [stderr] warning: unused variable: `s`
Dec 18 16:26:18.626 INFO [stderr]   --> benches/fn_block_benchmark.rs:14:9
Dec 18 16:26:18.626 INFO [stderr]    |
Dec 18 16:26:18.626 INFO [stderr] 14 |     let s = (|| Some(o?.get(0..3)?.to_lowercase()))();
Dec 18 16:26:18.626 INFO [stderr]    |         ^ help: consider using `_s` instead
Dec 18 16:26:18.626 INFO [stderr] 
Dec 18 16:26:18.626 INFO [stderr] warning: unused variable: `s`
Dec 18 16:26:18.626 INFO [stderr]   --> benches/fn_block_benchmark.rs:18:9
Dec 18 16:26:18.626 INFO [stderr]    |
Dec 18 16:26:18.626 INFO [stderr] 18 |     let s = fn_expr!{ o?.get(0..3)?.to_lowercase().into_some() };
Dec 18 16:26:18.626 INFO [stderr]    |         ^ help: consider using `_s` instead
Dec 18 16:26:18.626 INFO [stderr] 
Dec 18 16:26:18.626 INFO [stderr] warning: unused attribute
Dec 18 16:26:18.626 INFO [stderr]  --> benches/fn_block_benchmark.rs:5:1
Dec 18 16:26:18.626 INFO [stderr]   |
Dec 18 16:26:18.626 INFO [stderr] 5 | #[macro_use]
Dec 18 16:26:18.626 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 16:26:18.626 INFO [stderr]   |
Dec 18 16:26:18.626 INFO [stderr]   = note: #[warn(unused_attributes)] on by default
Dec 18 16:26:18.626 INFO [stderr] 
Dec 18 16:26:18.654 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.94s
Dec 18 16:26:18.958 INFO running `"docker" "inspect" "ae1dfa1d210345f0f6d9743016dae6396967dde4a6fec2dd4878058c959a93e1"`
Dec 18 16:26:19.070 INFO running `"docker" "rm" "-f" "ae1dfa1d210345f0f6d9743016dae6396967dde4a6fec2dd4878058c959a93e1"`
Dec 18 16:26:19.216 INFO [stdout] ae1dfa1d210345f0f6d9743016dae6396967dde4a6fec2dd4878058c959a93e1