[INFO] cloning repository rcoverick/rust_dailyprogrammer
[INFO] running `"git" "clone" "--bare" "git://github.com/rcoverick/rust_dailyprogrammer.git" "work/cache/sources/gh/rcoverick/rust_dailyprogrammer"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/rcoverick/rust_dailyprogrammer'...
[INFO] running `"git" "clone" "work/cache/sources/gh/rcoverick/rust_dailyprogrammer" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/rcoverick/rust_dailyprogrammer"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/rcoverick/rust_dailyprogrammer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rcoverick/rust_dailyprogrammer" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/rcoverick/rust_dailyprogrammer"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/rcoverick/rust_dailyprogrammer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7eba5007eb1ec145617b2771d020da0663dd7473
[INFO] sha for GitHub repo rcoverick/rust_dailyprogrammer: 7eba5007eb1ec145617b2771d020da0663dd7473
[INFO] validating manifest of rcoverick/rust_dailyprogrammer on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rcoverick/rust_dailyprogrammer on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rcoverick/rust_dailyprogrammer
[INFO] finished frobbing rcoverick/rust_dailyprogrammer
[INFO] frobbed toml for rcoverick/rust_dailyprogrammer written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/rcoverick/rust_dailyprogrammer/Cargo.toml
[INFO] started frobbing rcoverick/rust_dailyprogrammer
[INFO] finished frobbing rcoverick/rust_dailyprogrammer
[INFO] frobbed toml for rcoverick/rust_dailyprogrammer written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/rcoverick/rust_dailyprogrammer/Cargo.toml
[INFO] crate rcoverick/rust_dailyprogrammer has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rcoverick/rust_dailyprogrammer against try#290ac7b29f41ff9fa5232f9a1116ea71a3501063 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-2/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/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" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4b2cb32b9a312bdc0dcf562583812056db15106c708f45cb5a94e1715c4a9337
[INFO] running `"docker" "start" "-a" "4b2cb32b9a312bdc0dcf562583812056db15106c708f45cb5a94e1715c4a9337"`
[INFO] [stderr]     Checking time v0.1.36
[INFO] [stderr]     Checking dailyprogrammer v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]  --> src/challenge/easy/pandigital_roman_numbers.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     ///Numerals need to be in order. Each pair of numerals can be swapped to form a different number. 
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/challenge/intermediate/pgm_manipulation.rs:20:32
[INFO] [stderr]    |
[INFO] [stderr] 20 |     io::stdin().read_to_string((&mut buf)).unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: doc comment not used by rustdoc
[INFO] [stderr]  --> src/challenge/easy/pandigital_roman_numbers.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     ///Numerals need to be in order. Each pair of numerals can be swapped to form a different number. 
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/challenge/intermediate/pgm_manipulation.rs:20:32
[INFO] [stderr]    |
[INFO] [stderr] 20 |     io::stdin().read_to_string((&mut buf)).unwrap();
[INFO] [stderr]    |                                ^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/challenge/intermediate/pgm_manipulation.rs:38:41
[INFO] [stderr]    |
[INFO] [stderr] 38 |     res.chunks_mut(width as usize).map(|mut x| x.reverse()).count();
[INFO] [stderr]    |                                         ----^
[INFO] [stderr]    |                                         |
[INFO] [stderr]    |                                         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/challenge/intermediate/pgm_manipulation.rs:38:41
[INFO] [stderr]    |
[INFO] [stderr] 38 |     res.chunks_mut(width as usize).map(|mut x| x.reverse()).count();
[INFO] [stderr]    |                                         ----^
[INFO] [stderr]    |                                         |
[INFO] [stderr]    |                                         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.26s
[INFO] running `"docker" "inspect" "4b2cb32b9a312bdc0dcf562583812056db15106c708f45cb5a94e1715c4a9337"`
[INFO] running `"docker" "rm" "-f" "4b2cb32b9a312bdc0dcf562583812056db15106c708f45cb5a94e1715c4a9337"`
[INFO] [stdout] 4b2cb32b9a312bdc0dcf562583812056db15106c708f45cb5a94e1715c4a9337