[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#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Floboyd%2Fdouble-skunk-rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/loboyd/double-skunk-rust on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 15 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding cloudabi v0.0.3 (latest: v0.1.0)
[INFO] [stderr]       Adding numtoa v0.1.0 (latest: v0.2.4)
[INFO] [stderr]       Adding rand v0.5.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding redox_syscall v0.2.16 (latest: v0.5.1)
[INFO] [stderr]       Adding termion v1.5.6 (latest: v3.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84446ad7cfebcc9eaea7b0d671e79d236a41c371af29aad4738a4bec6b4d2882
[INFO] running `Command { std: "docker" "start" "-a" "84446ad7cfebcc9eaea7b0d671e79d236a41c371af29aad4738a4bec6b4d2882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84446ad7cfebcc9eaea7b0d671e79d236a41c371af29aad4738a4bec6b4d2882", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84446ad7cfebcc9eaea7b0d671e79d236a41c371af29aad4738a4bec6b4d2882", kill_on_drop: false }`
[INFO] [stdout] 84446ad7cfebcc9eaea7b0d671e79d236a41c371af29aad4738a4bec6b4d2882
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f047f5ad4fb45f9ebc37e3c56db1427c32d2ccee35262f255cdca732a79d447
[INFO] running `Command { std: "docker" "start" "-a" "3f047f5ad4fb45f9ebc37e3c56db1427c32d2ccee35262f255cdca732a79d447", kill_on_drop: false }`
[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 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]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[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: `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]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[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: `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: 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: constant `CARD_HEIGHT` is never used
[INFO] [stdout]   --> src/termion_ui.rs:19:7
[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 `CARD_WIDTH` is never used
[INFO] [stdout]   --> src/termion_ui.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 | const CARD_WIDTH:  u16 = card::WIDTH;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `HEIGHT` is never used
[INFO] [stdout]  --> src/card.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const HEIGHT: u16 = 6;
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `WIDTH` is never used
[INFO] [stdout]  --> src/card.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const WIDTH:  u16 = 9;
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next` is never used
[INFO] [stdout]   --> src/card.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Rank {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 24 |     pub fn next(self) -> Option<Self> {
[INFO] [stdout]    |            ^^^^
[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 `CARD_HEIGHT` is never used
[INFO] [stdout]   --> src/termion_ui.rs:19:7
[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 `CARD_WIDTH` is never used
[INFO] [stdout]   --> src/termion_ui.rs:20:7
[INFO] [stdout]    |
[INFO] [stdout] 20 | const CARD_WIDTH:  u16 = card::WIDTH;
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `HEIGHT` is never used
[INFO] [stdout]  --> src/card.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const HEIGHT: u16 = 6;
[INFO] [stdout]   |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `WIDTH` is never used
[INFO] [stdout]  --> src/card.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const WIDTH:  u16 = 9;
[INFO] [stdout]   |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `next` is never used
[INFO] [stdout]   --> src/card.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl Rank {
[INFO] [stdout]    | --------- method in this implementation
[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: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "3f047f5ad4fb45f9ebc37e3c56db1427c32d2ccee35262f255cdca732a79d447", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f047f5ad4fb45f9ebc37e3c56db1427c32d2ccee35262f255cdca732a79d447", kill_on_drop: false }`
[INFO] [stdout] 3f047f5ad4fb45f9ebc37e3c56db1427c32d2ccee35262f255cdca732a79d447