Dec 18 16:26:15.711 INFO checking fn_block-0.2.1 against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 18 16:26:15.711 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/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" "+96d1334e567237b1507cd277938e7ae2de75ff51-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 16:26:16.040 INFO [stdout] f0e9c1b872b70000c0d0113626ec2447b5c740798f1d2bebae74c64cd53bb21a
Dec 18 16:26:16.067 INFO running `"docker" "start" "-a" "f0e9c1b872b70000c0d0113626ec2447b5c740798f1d2bebae74c64cd53bb21a"`
Dec 18 16:26:17.424 INFO [stderr]     Checking fn_block v0.2.1 (/opt/crater/workdir)
Dec 18 16:26:19.178 INFO [stderr] warning: unused variable: `s`
Dec 18 16:26:19.178 INFO [stderr]   --> benches/fn_block_benchmark.rs:10:9
Dec 18 16:26:19.178 INFO [stderr]    |
Dec 18 16:26:19.178 INFO [stderr] 10 |     let s = o.and_then(|st| st.get(0..3)).map(|st| st.to_lowercase());
Dec 18 16:26:19.178 INFO [stderr]    |         ^ help: consider using `_s` instead
Dec 18 16:26:19.178 INFO [stderr]    |
Dec 18 16:26:19.178 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 16:26:19.178 INFO [stderr] 
Dec 18 16:26:19.178 INFO [stderr] warning: unused variable: `s`
Dec 18 16:26:19.178 INFO [stderr]   --> benches/fn_block_benchmark.rs:14:9
Dec 18 16:26:19.178 INFO [stderr]    |
Dec 18 16:26:19.178 INFO [stderr] 14 |     let s = (|| Some(o?.get(0..3)?.to_lowercase()))();
Dec 18 16:26:19.178 INFO [stderr]    |         ^ help: consider using `_s` instead
Dec 18 16:26:19.178 INFO [stderr] 
Dec 18 16:26:19.178 INFO [stderr] warning: unused variable: `s`
Dec 18 16:26:19.178 INFO [stderr]   --> benches/fn_block_benchmark.rs:18:9
Dec 18 16:26:19.178 INFO [stderr]    |
Dec 18 16:26:19.178 INFO [stderr] 18 |     let s = fn_expr!{ o?.get(0..3)?.to_lowercase().into_some() };
Dec 18 16:26:19.178 INFO [stderr]    |         ^ help: consider using `_s` instead
Dec 18 16:26:19.178 INFO [stderr] 
Dec 18 16:26:19.186 INFO [stderr] warning: unused attribute
Dec 18 16:26:19.186 INFO [stderr]  --> benches/fn_block_benchmark.rs:5:1
Dec 18 16:26:19.186 INFO [stderr]   |
Dec 18 16:26:19.186 INFO [stderr] 5 | #[macro_use]
Dec 18 16:26:19.186 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 16:26:19.186 INFO [stderr]   |
Dec 18 16:26:19.186 INFO [stderr]   = note: #[warn(unused_attributes)] on by default
Dec 18 16:26:19.186 INFO [stderr] 
Dec 18 16:26:19.224 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.98s
Dec 18 16:26:19.455 INFO running `"docker" "inspect" "f0e9c1b872b70000c0d0113626ec2447b5c740798f1d2bebae74c64cd53bb21a"`
Dec 18 16:26:19.556 INFO running `"docker" "rm" "-f" "f0e9c1b872b70000c0d0113626ec2447b5c740798f1d2bebae74c64cd53bb21a"`
Dec 18 16:26:19.676 INFO [stdout] f0e9c1b872b70000c0d0113626ec2447b5c740798f1d2bebae74c64cd53bb21a