Dec 19 10:21:38.597 INFO checking rcoverick/rust_dailyprogrammer against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 10:21:38.597 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/rcoverick/rust_dailyprogrammer:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 10:21:38.952 INFO [stdout] ab6bb9901743ee93c0153008f3d71f332cca4c113988f28d513c4fc0b1df613e
Dec 19 10:21:38.954 INFO running `"docker" "start" "-a" "ab6bb9901743ee93c0153008f3d71f332cca4c113988f28d513c4fc0b1df613e"`
Dec 19 10:21:41.145 INFO [stderr]     Checking dailyprogrammer v0.1.0 (/opt/crater/workdir)
Dec 19 10:21:41.524 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 10:21:41.524 INFO [stderr]  --> src/challenge/easy/pandigital_roman_numbers.rs:3:5
Dec 19 10:21:41.524 INFO [stderr]   |
Dec 19 10:21:41.524 INFO [stderr] 3 |     ///Numerals need to be in order. Each pair of numerals can be swapped to form a different number. 
Dec 19 10:21:41.524 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:21:41.525 INFO [stderr]   |
Dec 19 10:21:41.525 INFO [stderr]   = note: #[warn(unused_doc_comments)] on by default
Dec 19 10:21:41.525 INFO [stderr] 
Dec 19 10:21:41.556 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 19 10:21:41.557 INFO [stderr]   --> src/challenge/intermediate/pgm_manipulation.rs:20:32
Dec 19 10:21:41.557 INFO [stderr]    |
Dec 19 10:21:41.557 INFO [stderr] 20 |     io::stdin().read_to_string((&mut buf)).unwrap();
Dec 19 10:21:41.558 INFO [stderr]    |                                ^^^^^^^^^^ help: remove these parentheses
Dec 19 10:21:41.558 INFO [stderr]    |
Dec 19 10:21:41.560 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 10:21:41.560 INFO [stderr] 
Dec 19 10:21:41.573 INFO [stderr] warning: doc comment not used by rustdoc
Dec 19 10:21:41.573 INFO [stderr]  --> src/challenge/easy/pandigital_roman_numbers.rs:3:5
Dec 19 10:21:41.573 INFO [stderr]   |
Dec 19 10:21:41.573 INFO [stderr] 3 |     ///Numerals need to be in order. Each pair of numerals can be swapped to form a different number. 
Dec 19 10:21:41.573 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 10:21:41.573 INFO [stderr]   |
Dec 19 10:21:41.573 INFO [stderr]   = note: #[warn(unused_doc_comments)] on by default
Dec 19 10:21:41.573 INFO [stderr] 
Dec 19 10:21:41.574 INFO [stderr] warning: unnecessary parentheses around method argument
Dec 19 10:21:41.574 INFO [stderr]   --> src/challenge/intermediate/pgm_manipulation.rs:20:32
Dec 19 10:21:41.574 INFO [stderr]    |
Dec 19 10:21:41.574 INFO [stderr] 20 |     io::stdin().read_to_string((&mut buf)).unwrap();
Dec 19 10:21:41.574 INFO [stderr]    |                                ^^^^^^^^^^ help: remove these parentheses
Dec 19 10:21:41.584 INFO [stderr]    |
Dec 19 10:21:41.584 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Dec 19 10:21:41.584 INFO [stderr] 
Dec 19 10:21:42.008 INFO [stderr] warning: variable does not need to be mutable
Dec 19 10:21:42.008 INFO [stderr]   --> src/challenge/intermediate/pgm_manipulation.rs:38:41
Dec 19 10:21:42.008 INFO [stderr]    |
Dec 19 10:21:42.008 INFO [stderr] 38 |     res.chunks_mut(width as usize).map(|mut x| x.reverse()).count();
Dec 19 10:21:42.008 INFO [stderr]    |                                         ----^
Dec 19 10:21:42.008 INFO [stderr]    |                                         |
Dec 19 10:21:42.008 INFO [stderr]    |                                         help: remove this `mut`
Dec 19 10:21:42.008 INFO [stderr]    |
Dec 19 10:21:42.008 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 10:21:42.008 INFO [stderr] 
Dec 19 10:21:42.048 INFO [stderr] warning: variable does not need to be mutable
Dec 19 10:21:42.048 INFO [stderr]   --> src/challenge/intermediate/pgm_manipulation.rs:38:41
Dec 19 10:21:42.048 INFO [stderr]    |
Dec 19 10:21:42.048 INFO [stderr] 38 |     res.chunks_mut(width as usize).map(|mut x| x.reverse()).count();
Dec 19 10:21:42.048 INFO [stderr]    |                                         ----^
Dec 19 10:21:42.048 INFO [stderr]    |                                         |
Dec 19 10:21:42.048 INFO [stderr]    |                                         help: remove this `mut`
Dec 19 10:21:42.048 INFO [stderr]    |
Dec 19 10:21:42.048 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 10:21:42.048 INFO [stderr] 
Dec 19 10:21:42.447 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.34s
Dec 19 10:21:42.987 INFO running `"docker" "inspect" "ab6bb9901743ee93c0153008f3d71f332cca4c113988f28d513c4fc0b1df613e"`
Dec 19 10:21:43.346 INFO running `"docker" "rm" "-f" "ab6bb9901743ee93c0153008f3d71f332cca4c113988f28d513c4fc0b1df613e"`
Dec 19 10:21:43.576 INFO [stdout] ab6bb9901743ee93c0153008f3d71f332cca4c113988f28d513c4fc0b1df613e