Dec 19 22:02:58.123 INFO checking Ryan1729/prop-proc-prog-puzz against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 22:02:58.123 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/Ryan1729/prop-proc-prog-puzz:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 22:02:58.428 INFO [stdout] 5c587be3c1c5eb23a2a8304720c1553c22372b684797b47305f6ab79e5f6632a
Dec 19 22:02:58.433 INFO running `"docker" "start" "-a" "5c587be3c1c5eb23a2a8304720c1553c22372b684797b47305f6ab79e5f6632a"`
Dec 19 22:02:59.484 INFO [stderr]     Checking prop_proc_prog_puzz v0.1.0 (/opt/crater/workdir)
Dec 19 22:02:59.512 INFO [stderr]     Checking env_logger v0.3.5
Dec 19 22:03:00.029 INFO [stderr]     Checking quickcheck v0.3.2
Dec 19 22:03:00.148 INFO [stderr] warning: variable does not need to be mutable
Dec 19 22:03:00.148 INFO [stderr]   --> src/main.rs:69:20
Dec 19 22:03:00.148 INFO [stderr]    |
Dec 19 22:03:00.148 INFO [stderr] 69 |         example: &|mut rng| match rng.gen::<u8>() % 3 {
Dec 19 22:03:00.156 INFO [stderr]    |                    ----^^^
Dec 19 22:03:00.156 INFO [stderr]    |                    |
Dec 19 22:03:00.156 INFO [stderr]    |                    help: remove this `mut`
Dec 19 22:03:00.156 INFO [stderr]    |
Dec 19 22:03:00.156 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 22:03:00.156 INFO [stderr] 
Dec 19 22:03:02.313 INFO [stderr] warning: variable does not need to be mutable
Dec 19 22:03:02.313 INFO [stderr]   --> src/main.rs:69:20
Dec 19 22:03:02.313 INFO [stderr]    |
Dec 19 22:03:02.313 INFO [stderr] 69 |         example: &|mut rng| match rng.gen::<u8>() % 3 {
Dec 19 22:03:02.313 INFO [stderr]    |                    ----^^^
Dec 19 22:03:02.313 INFO [stderr]    |                    |
Dec 19 22:03:02.313 INFO [stderr]    |                    help: remove this `mut`
Dec 19 22:03:02.314 INFO [stderr]    |
Dec 19 22:03:02.314 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 22:03:02.314 INFO [stderr] 
Dec 19 22:03:02.568 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.12s
Dec 19 22:03:03.237 INFO running `"docker" "inspect" "5c587be3c1c5eb23a2a8304720c1553c22372b684797b47305f6ab79e5f6632a"`
Dec 19 22:03:03.596 INFO running `"docker" "rm" "-f" "5c587be3c1c5eb23a2a8304720c1553c22372b684797b47305f6ab79e5f6632a"`
Dec 19 22:03:03.952 INFO [stdout] 5c587be3c1c5eb23a2a8304720c1553c22372b684797b47305f6ab79e5f6632a