Dec 17 23:36:55.517 INFO checking gregorholzmann/rust-playground against master#96d1334e567237b1507cd277938e7ae2de75ff51 for pr-54252
Dec 17 23:36:55.517 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/master#96d1334e567237b1507cd277938e7ae2de75ff51:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/master#96d1334e567237b1507cd277938e7ae2de75ff51/gh/gregorholzmann/rust-playground:/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 17 23:36:55.922 INFO [stdout] 86608f64e960de1d6be8956dc768f6c67fc2d142c4095130fcb8ef2897438975
Dec 17 23:36:55.924 INFO running `"docker" "start" "-a" "86608f64e960de1d6be8956dc768f6c67fc2d142c4095130fcb8ef2897438975"`
Dec 17 23:36:57.835 INFO [stderr]     Checking rust-playground v0.1.0 (/opt/crater/workdir)
Dec 17 23:36:58.348 INFO [stderr] warning: unused variable: `x`
Dec 17 23:36:58.348 INFO [stderr]   --> src/main.rs:86:9
Dec 17 23:36:58.348 INFO [stderr]    |
Dec 17 23:36:58.348 INFO [stderr] 86 |     for x in 0..number_of_cards {
Dec 17 23:36:58.348 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:36:58.348 INFO [stderr]    |
Dec 17 23:36:58.348 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 23:36:58.348 INFO [stderr] 
Dec 17 23:36:58.348 INFO [stderr] warning: value assigned to `num_value` is never read
Dec 17 23:36:58.348 INFO [stderr]   --> src/main.rs:25:21
Dec 17 23:36:58.348 INFO [stderr]    |
Dec 17 23:36:58.348 INFO [stderr] 25 |             let mut num_value: u8 = 0;
Dec 17 23:36:58.348 INFO [stderr]    |                     ^^^^^^^^^
Dec 17 23:36:58.348 INFO [stderr]    |
Dec 17 23:36:58.348 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 17 23:36:58.348 INFO [stderr] 
Dec 17 23:36:58.384 INFO [stderr] warning: unused variable: `x`
Dec 17 23:36:58.384 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:36:58.384 INFO [stderr]    --> src/main.rs:101:51
Dec 17 23:36:58.384 INFO [stderr]     |
Dec 17 23:36:58.384 INFO [stderr] 101 | fn end_game(player_hand: Hand, dealer_hand: Hand, mut deck: &mut Vec<Card>) {
Dec 17 23:36:58.384 INFO [stderr]     |                                                   ----^^^^
Dec 17 23:36:58.384 INFO [stderr]   --> src/main.rs:86:9
Dec 17 23:36:58.384 INFO [stderr]     |                                                   |
Dec 17 23:36:58.384 INFO [stderr]    |
Dec 17 23:36:58.384 INFO [stderr]     |                                                   help: remove this `mut`
Dec 17 23:36:58.384 INFO [stderr] 86 |     for x in 0..number_of_cards {
Dec 17 23:36:58.384 INFO [stderr]     |
Dec 17 23:36:58.384 INFO [stderr]    |         ^ help: consider using `_x` instead
Dec 17 23:36:58.384 INFO [stderr]    |
Dec 17 23:36:58.384 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 23:36:58.384 INFO [stderr] 
Dec 17 23:36:58.384 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 17 23:36:58.384 INFO [stderr] 
Dec 17 23:36:58.384 INFO [stderr] warning: value assigned to `num_value` is never read
Dec 17 23:36:58.384 INFO [stderr]   --> src/main.rs:25:21
Dec 17 23:36:58.384 INFO [stderr]    |
Dec 17 23:36:58.384 INFO [stderr] 25 |             let mut num_value: u8 = 0;
Dec 17 23:36:58.384 INFO [stderr]    |                     ^^^^^^^^^
Dec 17 23:36:58.384 INFO [stderr]    |
Dec 17 23:36:58.384 INFO [stderr]    = note: #[warn(unused_assignments)] on by default
Dec 17 23:36:58.384 INFO [stderr] 
Dec 17 23:36:58.392 INFO [stderr] warning: variable does not need to be mutable
Dec 17 23:36:58.392 INFO [stderr]    --> src/main.rs:101:51
Dec 17 23:36:58.392 INFO [stderr]     |
Dec 17 23:36:58.392 INFO [stderr] 101 | fn end_game(player_hand: Hand, dealer_hand: Hand, mut deck: &mut Vec<Card>) {
Dec 17 23:36:58.392 INFO [stderr]     |                                                   ----^^^^
Dec 17 23:36:58.392 INFO [stderr]     |                                                   |
Dec 17 23:36:58.392 INFO [stderr]     |                                                   help: remove this `mut`
Dec 17 23:36:58.392 INFO [stderr]     |
Dec 17 23:36:58.392 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 17 23:36:58.392 INFO [stderr] 
Dec 17 23:36:58.460 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.65s
Dec 17 23:36:59.062 INFO running `"docker" "inspect" "86608f64e960de1d6be8956dc768f6c67fc2d142c4095130fcb8ef2897438975"`
Dec 17 23:36:59.350 INFO running `"docker" "rm" "-f" "86608f64e960de1d6be8956dc768f6c67fc2d142c4095130fcb8ef2897438975"`
Dec 17 23:36:59.592 INFO [stdout] 86608f64e960de1d6be8956dc768f6c67fc2d142c4095130fcb8ef2897438975