[INFO] updating cached repository frostie614/cards
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/frostie614/cards
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/frostie614/cards" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/frostie614/cards"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/frostie614/cards'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/frostie614/cards" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/frostie614/cards"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/frostie614/cards'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6c0f920240c260881a84e2cbb2b22baeae50cebc
[INFO] sha for GitHub repo frostie614/cards: 6c0f920240c260881a84e2cbb2b22baeae50cebc
[INFO] validating manifest of frostie614/cards on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of frostie614/cards on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing frostie614/cards
[INFO] finished frobbing frostie614/cards
[INFO] frobbed toml for frostie614/cards written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/frostie614/cards/Cargo.toml
[INFO] started frobbing frostie614/cards
[INFO] finished frobbing frostie614/cards
[INFO] frobbed toml for frostie614/cards written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/frostie614/cards/Cargo.toml
[INFO] crate frostie614/cards already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking frostie614/cards against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-2/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/frostie614/cards:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 9e648320fb684fb3da1354f945b836f4e3420d777b9bcacd97ecbf4cd00bd8eb
[INFO] running `"docker" "start" "-a" "9e648320fb684fb3da1354f945b836f4e3420d777b9bcacd97ecbf4cd00bd8eb"`
[INFO] [stderr]     Checking cards v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant is never constructed: `Hearts`
[INFO] [stderr]   --> src/main.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 | enum Suit {Hearts, Diamonds, Spades, Clubs}
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/main.rs:1:9
[INFO] [stderr]    |
[INFO] [stderr] 1  | #![warn(dead_code)]
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Diamonds`
[INFO] [stderr]   --> src/main.rs:24:20
[INFO] [stderr]    |
[INFO] [stderr] 24 | enum Suit {Hearts, Diamonds, Spades, Clubs}
[INFO] [stderr]    |                    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Spades`
[INFO] [stderr]   --> src/main.rs:24:30
[INFO] [stderr]    |
[INFO] [stderr] 24 | enum Suit {Hearts, Diamonds, Spades, Clubs}
[INFO] [stderr]    |                              ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Clubs`
[INFO] [stderr]   --> src/main.rs:24:38
[INFO] [stderr]    |
[INFO] [stderr] 24 | enum Suit {Hearts, Diamonds, Spades, Clubs}
[INFO] [stderr]    |                                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ace`
[INFO] [stderr]   --> src/main.rs:27:10
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Two`
[INFO] [stderr]   --> src/main.rs:27:15
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Three`
[INFO] [stderr]   --> src/main.rs:27:20
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Four`
[INFO] [stderr]   --> src/main.rs:27:27
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Five`
[INFO] [stderr]   --> src/main.rs:27:33
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Six`
[INFO] [stderr]   --> src/main.rs:27:39
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Seven`
[INFO] [stderr]   --> src/main.rs:27:44
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Eight`
[INFO] [stderr]   --> src/main.rs:27:51
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nine`
[INFO] [stderr]   --> src/main.rs:27:58
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ten`
[INFO] [stderr]   --> src/main.rs:27:64
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Jack`
[INFO] [stderr]   --> src/main.rs:27:69
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Queen`
[INFO] [stderr]   --> src/main.rs:27:75
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `King`
[INFO] [stderr]   --> src/main.rs:27:82
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                                                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/main.rs:47:2
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn new()-> Deck{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `deal`
[INFO] [stderr]   --> src/main.rs:57:2
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn deal(&mut self) -> Option<Card>{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `shuffle`
[INFO] [stderr]   --> src/main.rs:61:2
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn shuffle(&mut self){
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/main.rs:68:2
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn new(suit:Suit, pip:Pip) -> Card{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `value`
[INFO] [stderr]   --> src/main.rs:72:2
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn value(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             writeln!(f, "{}", card);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Hearts`
[INFO] [stderr]   --> src/main.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 | enum Suit {Hearts, Diamonds, Spades, Clubs}
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/main.rs:1:9
[INFO] [stderr]    |
[INFO] [stderr] 1  | #![warn(dead_code)]
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Diamonds`
[INFO] [stderr]   --> src/main.rs:24:20
[INFO] [stderr]    |
[INFO] [stderr] 24 | enum Suit {Hearts, Diamonds, Spades, Clubs}
[INFO] [stderr]    |                    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Spades`
[INFO] [stderr]   --> src/main.rs:24:30
[INFO] [stderr]    |
[INFO] [stderr] 24 | enum Suit {Hearts, Diamonds, Spades, Clubs}
[INFO] [stderr]    |                              ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Clubs`
[INFO] [stderr]   --> src/main.rs:24:38
[INFO] [stderr]    |
[INFO] [stderr] 24 | enum Suit {Hearts, Diamonds, Spades, Clubs}
[INFO] [stderr]    |                                      ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ace`
[INFO] [stderr]   --> src/main.rs:27:10
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |          ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Two`
[INFO] [stderr]   --> src/main.rs:27:15
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Three`
[INFO] [stderr]   --> src/main.rs:27:20
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Four`
[INFO] [stderr]   --> src/main.rs:27:27
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                           ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Five`
[INFO] [stderr]   --> src/main.rs:27:33
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                 ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Six`
[INFO] [stderr]   --> src/main.rs:27:39
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Seven`
[INFO] [stderr]   --> src/main.rs:27:44
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Eight`
[INFO] [stderr]   --> src/main.rs:27:51
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Nine`
[INFO] [stderr]   --> src/main.rs:27:58
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Ten`
[INFO] [stderr]   --> src/main.rs:27:64
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                                ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Jack`
[INFO] [stderr]   --> src/main.rs:27:69
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Queen`
[INFO] [stderr]   --> src/main.rs:27:75
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                                           ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `King`
[INFO] [stderr]   --> src/main.rs:27:82
[INFO] [stderr]    |
[INFO] [stderr] 27 | enum Pip{Ace, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten, Jack, Queen, King}
[INFO] [stderr]    |                                                                                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/main.rs:47:2
[INFO] [stderr]    |
[INFO] [stderr] 47 |     fn new()-> Deck{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `deal`
[INFO] [stderr]   --> src/main.rs:57:2
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn deal(&mut self) -> Option<Card>{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `shuffle`
[INFO] [stderr]   --> src/main.rs:61:2
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn shuffle(&mut self){
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/main.rs:68:2
[INFO] [stderr]    |
[INFO] [stderr] 68 |     fn new(suit:Suit, pip:Pip) -> Card{
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `value`
[INFO] [stderr]   --> src/main.rs:72:2
[INFO] [stderr]    |
[INFO] [stderr] 72 |     fn value(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:38:13
[INFO] [stderr]    |
[INFO] [stderr] 38 |             writeln!(f, "{}", card);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `"docker" "inspect" "9e648320fb684fb3da1354f945b836f4e3420d777b9bcacd97ecbf4cd00bd8eb"`
[INFO] running `"docker" "rm" "-f" "9e648320fb684fb3da1354f945b836f4e3420d777b9bcacd97ecbf4cd00bd8eb"`
[INFO] [stdout] 9e648320fb684fb3da1354f945b836f4e3420d777b9bcacd97ecbf4cd00bd8eb