[INFO] cloning repository https://github.com/loboyd/double-skunk-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/loboyd/double-skunk-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floboyd%2Fdouble-skunk-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floboyd%2Fdouble-skunk-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5950bf02c32f36ae8bb7b36d2c129d60ba4c1de8
[INFO] checking loboyd/double-skunk-rust against master#3aedcf06b73fc36feeebca3d579e1d2a6c40acc5 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floboyd%2Fdouble-skunk-rust" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loboyd/double-skunk-rust on toolchain 3aedcf06b73fc36feeebca3d579e1d2a6c40acc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/loboyd/double-skunk-rust
[INFO] finished tweaking git repo https://github.com/loboyd/double-skunk-rust
[INFO] tweaked toml for git repo https://github.com/loboyd/double-skunk-rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9f61508048e831a2f5b951b12c1d7a94e926c079ad765a75124f1d5eb5ad7393
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9f61508048e831a2f5b951b12c1d7a94e926c079ad765a75124f1d5eb5ad7393", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f61508048e831a2f5b951b12c1d7a94e926c079ad765a75124f1d5eb5ad7393", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f61508048e831a2f5b951b12c1d7a94e926c079ad765a75124f1d5eb5ad7393", kill_on_drop: false }`
[INFO] [stdout] 9f61508048e831a2f5b951b12c1d7a94e926c079ad765a75124f1d5eb5ad7393
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTUP_TOOLCHAIN=3aedcf06b73fc36feeebca3d579e1d2a6c40acc5" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/tmp/crater-runner-fifo/jobserver-crater-fwd" "/opt/rustwide/cargo-home/bin/cargo" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23b31c195c2ae3d638b2e1e7ebd1bc91f6e074718c0a1a9c435bf2336b876ee4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "23b31c195c2ae3d638b2e1e7ebd1bc91f6e074718c0a1a9c435bf2336b876ee4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking double-skunk-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/hand.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starter`
[INFO] [stdout]   --> src/termion_ui.rs:64:69
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn get_discard(&self, dealer: bool, hand: &mut Vec<card::Card>, starter: &card::Card)
[INFO] [stdout]    |                                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `raise_only` is never read
[INFO] [stdout]    --> src/termion_ui.rs:269:21
[INFO] [stdout]     |
[INFO] [stdout] 269 |                     raise_only = false; // TODO: Do we need this line?
[INFO] [stdout]     |                     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dealer`
[INFO] [stdout]   --> src/bogus_opponent.rs:23:28
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn get_deal(&mut self, dealer: bool) -> (Vec<Card>, Card) {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_dealer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `card`
[INFO] [stdout]   --> src/bogus_opponent.rs:40:25
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn send_play(&self, card: card::Card) {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_card`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `discarded`
[INFO] [stdout]   --> src/game.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let discarded = self.user_interface.get_discard(
[INFO] [stdout]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_discarded`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `turn_up_suit`
[INFO] [stdout]    --> src/hand.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let turn_up_suit = starter.get_suit();
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_turn_up_suit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `turn_up_suit`
[INFO] [stdout]    --> src/hand.rs:113:21
[INFO] [stdout]     |
[INFO] [stdout] 113 |                     turn_up_suit
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_turn_up_suit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `play`
[INFO] [stdout]    --> src/hand.rs:122:26
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn score_play(&self, play: card::Card) -> u16 {
[INFO] [stdout]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_play`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CARD_HEIGHT`
[INFO] [stdout]   --> src/termion_ui.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | const CARD_HEIGHT: u16 = card::HEIGHT;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CARD_WIDTH`
[INFO] [stdout]   --> src/termion_ui.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | const CARD_WIDTH:  u16 = card::WIDTH;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HEIGHT`
[INFO] [stdout]  --> src/card.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const HEIGHT: u16 = 6;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `WIDTH`
[INFO] [stdout]  --> src/card.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const WIDTH:  u16 = 9;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/card.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn next(self) -> Option<Self> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt`
[INFO] [stdout]  --> src/hand.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `starter`
[INFO] [stdout]   --> src/termion_ui.rs:64:69
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn get_discard(&self, dealer: bool, hand: &mut Vec<card::Card>, starter: &card::Card)
[INFO] [stdout]    |                                                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_starter`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `raise_only` is never read
[INFO] [stdout]    --> src/termion_ui.rs:269:21
[INFO] [stdout]     |
[INFO] [stdout] 269 |                     raise_only = false; // TODO: Do we need this line?
[INFO] [stdout]     |                     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dealer`
[INFO] [stdout]   --> src/bogus_opponent.rs:23:28
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn get_deal(&mut self, dealer: bool) -> (Vec<Card>, Card) {
[INFO] [stdout]    |                            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_dealer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `card`
[INFO] [stdout]   --> src/bogus_opponent.rs:40:25
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn send_play(&self, card: card::Card) {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_card`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `discarded`
[INFO] [stdout]   --> src/game.rs:38:17
[INFO] [stdout]    |
[INFO] [stdout] 38 |             let discarded = self.user_interface.get_discard(
[INFO] [stdout]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_discarded`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `turn_up_suit`
[INFO] [stdout]    --> src/hand.rs:107:13
[INFO] [stdout]     |
[INFO] [stdout] 107 |         let turn_up_suit = starter.get_suit();
[INFO] [stdout]     |             ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_turn_up_suit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `turn_up_suit`
[INFO] [stdout]    --> src/hand.rs:113:21
[INFO] [stdout]     |
[INFO] [stdout] 113 |                     turn_up_suit
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_turn_up_suit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `play`
[INFO] [stdout]    --> src/hand.rs:122:26
[INFO] [stdout]     |
[INFO] [stdout] 122 |     fn score_play(&self, play: card::Card) -> u16 {
[INFO] [stdout]     |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_play`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CARD_HEIGHT`
[INFO] [stdout]   --> src/termion_ui.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | const CARD_HEIGHT: u16 = card::HEIGHT;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CARD_WIDTH`
[INFO] [stdout]   --> src/termion_ui.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | const CARD_WIDTH:  u16 = card::WIDTH;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `HEIGHT`
[INFO] [stdout]  --> src/card.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const HEIGHT: u16 = 6;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `WIDTH`
[INFO] [stdout]  --> src/card.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const WIDTH:  u16 = 9;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/card.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 24 |     pub fn next(self) -> Option<Self> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.19s
[INFO] running `Command { std: "docker" "inspect" "23b31c195c2ae3d638b2e1e7ebd1bc91f6e074718c0a1a9c435bf2336b876ee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23b31c195c2ae3d638b2e1e7ebd1bc91f6e074718c0a1a9c435bf2336b876ee4", kill_on_drop: false }`
[INFO] [stdout] 23b31c195c2ae3d638b2e1e7ebd1bc91f6e074718c0a1a9c435bf2336b876ee4