Dec 18 06:21:39.697 INFO checking MonadProject/ledger against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 06:21:39.697 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-5/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/MonadProject/ledger:/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 06:21:40.154 INFO [stdout] 488a59783e83731b6d0d0d1fde0375800ce60dfdd59451a6bbd19b7e54173a99
Dec 18 06:21:40.156 INFO running `"docker" "start" "-a" "488a59783e83731b6d0d0d1fde0375800ce60dfdd59451a6bbd19b7e54173a99"`
Dec 18 06:21:41.816 INFO [stderr]     Checking monadledger v0.1.0 (/opt/crater/workdir)
Dec 18 06:21:42.148 INFO [stderr] warning: unused variable: `b`
Dec 18 06:21:42.148 INFO [stderr]  --> src/main.rs:3:9
Dec 18 06:21:42.148 INFO [stderr]   |
Dec 18 06:21:42.148 INFO [stderr] 3 |     let b = &&a[0];
Dec 18 06:21:42.148 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 18 06:21:42.148 INFO [stderr]   |
Dec 18 06:21:42.148 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 18 06:21:42.148 INFO [stderr] 
Dec 18 06:21:42.155 INFO [stderr] warning: unused variable: `b`
Dec 18 06:21:42.155 INFO [stderr]  --> src/main.rs:3:9
Dec 18 06:21:42.155 INFO [stderr]   |
Dec 18 06:21:42.155 INFO [stderr] 3 |     let b = &&a[0];
Dec 18 06:21:42.155 INFO [stderr]   |         ^ help: consider using `_b` instead
Dec 18 06:21:42.155 INFO [stderr]   |
Dec 18 06:21:42.155 INFO [stderr]   = note: #[warn(unused_variables)] on by default
Dec 18 06:21:42.155 INFO [stderr] 
Dec 18 06:21:42.205 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
Dec 18 06:21:42.666 INFO running `"docker" "inspect" "488a59783e83731b6d0d0d1fde0375800ce60dfdd59451a6bbd19b7e54173a99"`
Dec 18 06:21:42.786 INFO running `"docker" "rm" "-f" "488a59783e83731b6d0d0d1fde0375800ce60dfdd59451a6bbd19b7e54173a99"`
Dec 18 06:21:42.925 INFO [stdout] 488a59783e83731b6d0d0d1fde0375800ce60dfdd59451a6bbd19b7e54173a99