[INFO] updating cached repository https://github.com/caphindsight/vdneg
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f71e01df48c81d0b5b5e160eca0c6f8b52899418
[INFO] checking caphindsight/vdneg against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcaphindsight%2Fvdneg" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/caphindsight/vdneg on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/caphindsight/vdneg
[INFO] finished tweaking git repo https://github.com/caphindsight/vdneg
[INFO] tweaked toml for git repo https://github.com/caphindsight/vdneg written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/caphindsight/vdneg already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] aea5e71e37ee382ed1bb7e35489f13e5a87407ee93c4fcac8f66abacbe65156b
[INFO] running `"docker" "start" "-a" "aea5e71e37ee382ed1bb7e35489f13e5a87407ee93c4fcac8f66abacbe65156b"`
[INFO] [stderr]     Checking libc v0.2.19
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking vdneg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `cards::Rank`
[INFO] [stderr]  --> src/combo.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use cards::Rank;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `cards::Suit`
[INFO] [stderr]  --> src/combo.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use cards::Suit;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `cards::Rank`
[INFO] [stderr]  --> src/combo.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use cards::Rank;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `cards::Suit`
[INFO] [stderr]  --> src/combo.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use cards::Suit;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_string`
[INFO] [stderr]   --> src/cards.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn to_string(self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_unicode_string`
[INFO] [stderr]   --> src/cards.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn to_unicode_string(self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_ascii_string`
[INFO] [stderr]   --> src/cards.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn to_ascii_string(self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_long_unicode_string`
[INFO] [stderr]    --> src/cards.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn to_long_unicode_string(self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_long_ascii_string`
[INFO] [stderr]    --> src/cards.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     pub fn to_long_ascii_string(self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deck_unshuffled`
[INFO] [stderr]    --> src/cards.rs:223:8
[INFO] [stderr]     |
[INFO] [stderr] 223 | pub fn deck_unshuffled() -> Vec<Card> { vec![
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deck_shuffled`
[INFO] [stderr]    --> src/cards.rs:281:8
[INFO] [stderr]     |
[INFO] [stderr] 281 | pub fn deck_shuffled() -> Vec<Card> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Straight`
[INFO] [stderr]   --> src/combo.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Straight,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Flush`
[INFO] [stderr]   --> src/combo.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Flush,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FullHouse`
[INFO] [stderr]   --> src/combo.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     FullHouse,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FourOfKind`
[INFO] [stderr]   --> src/combo.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     FourOfKind,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `StraightFlush`
[INFO] [stderr]   --> src/combo.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     StraightFlush,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RoyalFlush`
[INFO] [stderr]   --> src/combo.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     RoyalFlush,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_long_unicode_string`
[INFO] [stderr]   --> src/combo.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn to_long_unicode_string(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_long_ascii_string`
[INFO] [stderr]   --> src/combo.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn to_long_ascii_string(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `filter_by_suit`
[INFO] [stderr]    --> src/combo.rs:188:8
[INFO] [stderr]     |
[INFO] [stderr] 188 |     fn filter_by_suit(cards: &[Card], suit: Suit) -> Vec<Card> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_string`
[INFO] [stderr]   --> src/cards.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn to_string(self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_unicode_string`
[INFO] [stderr]   --> src/cards.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn to_unicode_string(self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_ascii_string`
[INFO] [stderr]   --> src/cards.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 58 |     pub fn to_ascii_string(self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_long_unicode_string`
[INFO] [stderr]    --> src/cards.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn to_long_unicode_string(self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_long_ascii_string`
[INFO] [stderr]    --> src/cards.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     pub fn to_long_ascii_string(self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deck_unshuffled`
[INFO] [stderr]    --> src/cards.rs:223:8
[INFO] [stderr]     |
[INFO] [stderr] 223 | pub fn deck_unshuffled() -> Vec<Card> { vec![
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `deck_shuffled`
[INFO] [stderr]    --> src/cards.rs:281:8
[INFO] [stderr]     |
[INFO] [stderr] 281 | pub fn deck_shuffled() -> Vec<Card> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Straight`
[INFO] [stderr]   --> src/combo.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Straight,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Flush`
[INFO] [stderr]   --> src/combo.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Flush,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FullHouse`
[INFO] [stderr]   --> src/combo.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     FullHouse,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `FourOfKind`
[INFO] [stderr]   --> src/combo.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     FourOfKind,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `StraightFlush`
[INFO] [stderr]   --> src/combo.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     StraightFlush,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RoyalFlush`
[INFO] [stderr]   --> src/combo.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 |     RoyalFlush,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_long_unicode_string`
[INFO] [stderr]   --> src/combo.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn to_long_unicode_string(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_long_ascii_string`
[INFO] [stderr]   --> src/combo.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn to_long_ascii_string(&self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `filter_by_suit`
[INFO] [stderr]    --> src/combo.rs:188:8
[INFO] [stderr]     |
[INFO] [stderr] 188 |     fn filter_by_suit(cards: &[Card], suit: Suit) -> Vec<Card> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.39s
[INFO] running `"docker" "inspect" "aea5e71e37ee382ed1bb7e35489f13e5a87407ee93c4fcac8f66abacbe65156b"`
[INFO] running `"docker" "rm" "-f" "aea5e71e37ee382ed1bb7e35489f13e5a87407ee93c4fcac8f66abacbe65156b"`
[INFO] [stdout] aea5e71e37ee382ed1bb7e35489f13e5a87407ee93c4fcac8f66abacbe65156b