Dec 04 18:01:18.028 INFO checking gregorholzmann/rust-playground against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 18:01:18.028 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/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 04 18:01:18.545 INFO [stdout] 92b542d220b516ec1114cd8a4fa294bb1ade5430ebfe6e83c1dacbf129308fa1
Dec 04 18:01:18.549 INFO running `"docker" "start" "-a" "92b542d220b516ec1114cd8a4fa294bb1ade5430ebfe6e83c1dacbf129308fa1"`
Dec 04 18:01:19.887 INFO [stderr] usermod: no changes
Dec 04 18:01:19.959 INFO [stderr]     Checking rust-playground v0.1.0 (/source)
Dec 04 18:01:20.445 INFO [stderr] warning: unused variable: `x`
Dec 04 18:01:20.446 INFO [stderr]   --> src/main.rs:86:9
Dec 04 18:01:20.446 INFO [stderr]    |
Dec 04 18:01:20.446 INFO [stderr] 86 |     for x in 0..number_of_cards {
Dec 04 18:01:20.446 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 18:01:20.446 INFO [stderr]    |
Dec 04 18:01:20.446 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 18:01:20.446 INFO [stderr] 
Dec 04 18:01:20.446 INFO [stderr] warning: value assigned to `num_value` is never read
Dec 04 18:01:20.446 INFO [stderr]   --> src/main.rs:25:21
Dec 04 18:01:20.446 INFO [stderr]    |
Dec 04 18:01:20.446 INFO [stderr] 25 |             let mut num_value: u8 = 0;
Dec 04 18:01:20.446 INFO [stderr]    |                     ^^^^^^^^^
Dec 04 18:01:20.446 INFO [stderr]    |
Dec 04 18:01:20.446 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 04 18:01:20.446 INFO [stderr] 
Dec 04 18:01:20.455 INFO [stderr] warning: variable does not need to be mutable
Dec 04 18:01:20.455 INFO [stderr]    --> src/main.rs:101:51
Dec 04 18:01:20.455 INFO [stderr]     |
Dec 04 18:01:20.455 INFO [stderr] 101 | fn end_game(player_hand: Hand, dealer_hand: Hand, mut deck: &mut Vec<Card>) {
Dec 04 18:01:20.455 INFO [stderr]     |                                                   ----^^^^
Dec 04 18:01:20.455 INFO [stderr]     |                                                   |
Dec 04 18:01:20.455 INFO [stderr]     |                                                   help: remove this `mut`
Dec 04 18:01:20.455 INFO [stderr]     |
Dec 04 18:01:20.455 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 18:01:20.455 INFO [stderr] 
Dec 04 18:01:20.487 INFO [stderr] warning: unused variable: `x`
Dec 04 18:01:20.487 INFO [stderr]   --> src/main.rs:86:9
Dec 04 18:01:20.487 INFO [stderr]    |
Dec 04 18:01:20.487 INFO [stderr] 86 |     for x in 0..number_of_cards {
Dec 04 18:01:20.487 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 04 18:01:20.487 INFO [stderr]    |
Dec 04 18:01:20.487 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 18:01:20.487 INFO [stderr] 
Dec 04 18:01:20.487 INFO [stderr] warning: value assigned to `num_value` is never read
Dec 04 18:01:20.487 INFO [stderr]   --> src/main.rs:25:21
Dec 04 18:01:20.487 INFO [stderr]    |
Dec 04 18:01:20.487 INFO [stderr] 25 |             let mut num_value: u8 = 0;
Dec 04 18:01:20.487 INFO [stderr]    |                     ^^^^^^^^^
Dec 04 18:01:20.487 INFO [stderr]    |
Dec 04 18:01:20.487 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 04 18:01:20.487 INFO [stderr] 
Dec 04 18:01:20.512 INFO [stderr] warning: variable does not need to be mutable
Dec 04 18:01:20.512 INFO [stderr]    --> src/main.rs:101:51
Dec 04 18:01:20.512 INFO [stderr]     |
Dec 04 18:01:20.512 INFO [stderr] 101 | fn end_game(player_hand: Hand, dealer_hand: Hand, mut deck: &mut Vec<Card>) {
Dec 04 18:01:20.512 INFO [stderr]     |                                                   ----^^^^
Dec 04 18:01:20.512 INFO [stderr]     |                                                   |
Dec 04 18:01:20.512 INFO [stderr]     |                                                   help: remove this `mut`
Dec 04 18:01:20.512 INFO [stderr]     |
Dec 04 18:01:20.512 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 04 18:01:20.512 INFO [stderr] 
Dec 04 18:01:20.557 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
Dec 04 18:01:20.557 INFO [stderr] su: No module specific data is present
Dec 04 18:01:21.345 INFO running `"docker" "inspect" "92b542d220b516ec1114cd8a4fa294bb1ade5430ebfe6e83c1dacbf129308fa1"`
Dec 04 18:01:21.677 INFO running `"docker" "rm" "-f" "92b542d220b516ec1114cd8a4fa294bb1ade5430ebfe6e83c1dacbf129308fa1"`
Dec 04 18:01:21.962 INFO [stdout] 92b542d220b516ec1114cd8a4fa294bb1ade5430ebfe6e83c1dacbf129308fa1