Dec 05 13:43:45.451 INFO checking fn_block-0.2.1 against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 05 13:43:45.451 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-2/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-2/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 05 13:43:45.695 INFO [stdout] 144cc260790ad7c475035bcf15065e9afc45d67c04134c0aa01acf5d7fe6a352
Dec 05 13:43:45.697 INFO running `"docker" "start" "-a" "144cc260790ad7c475035bcf15065e9afc45d67c04134c0aa01acf5d7fe6a352"`
Dec 05 13:43:46.331 INFO [stderr] usermod: no changes
Dec 05 13:43:46.486 INFO [stderr]     Checking fn_block v0.2.1 (/source)
Dec 05 13:43:51.428 INFO [stderr] warning: unused variable: `s`
Dec 05 13:43:51.428 INFO [stderr]   --> benches/fn_block_benchmark.rs:10:9
Dec 05 13:43:51.428 INFO [stderr]    |
Dec 05 13:43:51.428 INFO [stderr] 10 |     let s = o.and_then(|st| st.get(0..3)).map(|st| st.to_lowercase());
Dec 05 13:43:51.428 INFO [stderr]    |         ^ help: consider using `_s` instead
Dec 05 13:43:51.428 INFO [stderr]    |
Dec 05 13:43:51.428 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 05 13:43:51.428 INFO [stderr] 
Dec 05 13:43:51.428 INFO [stderr] warning: unused variable: `s`
Dec 05 13:43:51.428 INFO [stderr]   --> benches/fn_block_benchmark.rs:14:9
Dec 05 13:43:51.428 INFO [stderr]    |
Dec 05 13:43:51.428 INFO [stderr] 14 |     let s = (|| Some(o?.get(0..3)?.to_lowercase()))();
Dec 05 13:43:51.428 INFO [stderr]    |         ^ help: consider using `_s` instead
Dec 05 13:43:51.428 INFO [stderr] 
Dec 05 13:43:51.428 INFO [stderr] warning: unused variable: `s`
Dec 05 13:43:51.428 INFO [stderr]   --> benches/fn_block_benchmark.rs:18:9
Dec 05 13:43:51.428 INFO [stderr]    |
Dec 05 13:43:51.428 INFO [stderr] 18 |     let s = fn_expr!{ o?.get(0..3)?.to_lowercase().into_some() };
Dec 05 13:43:51.428 INFO [stderr]    |         ^ help: consider using `_s` instead
Dec 05 13:43:51.428 INFO [stderr] 
Dec 05 13:43:51.436 INFO [stderr] warning: unused attribute
Dec 05 13:43:51.436 INFO [stderr]  --> benches/fn_block_benchmark.rs:5:1
Dec 05 13:43:51.436 INFO [stderr]   |
Dec 05 13:43:51.436 INFO [stderr] 5 | #[macro_use]
Dec 05 13:43:51.436 INFO [stderr]   | ^^^^^^^^^^^^
Dec 05 13:43:51.436 INFO [stderr]   |
Dec 05 13:43:51.436 INFO [stderr]   = note: #[warn(unused_attributes)] on by default
Dec 05 13:43:51.436 INFO [stderr] 
Dec 05 13:43:51.457 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.11s
Dec 05 13:43:51.467 INFO [stderr] su: No module specific data is present
Dec 05 13:43:51.714 INFO running `"docker" "inspect" "144cc260790ad7c475035bcf15065e9afc45d67c04134c0aa01acf5d7fe6a352"`
Dec 05 13:43:51.818 INFO running `"docker" "rm" "-f" "144cc260790ad7c475035bcf15065e9afc45d67c04134c0aa01acf5d7fe6a352"`
Dec 05 13:43:51.912 INFO [stdout] 144cc260790ad7c475035bcf15065e9afc45d67c04134c0aa01acf5d7fe6a352