[INFO] cloning repository https://github.com/pati08/card-games
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pati08/card-games" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpati08%2Fcard-games", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpati08%2Fcard-games'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7aba01e9be2be8e002bfae74edd06361d5eabdb
[INFO] testing pati08/card-games against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpati08%2Fcard-games" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pati08/card-games
[INFO] finished tweaking git repo https://github.com/pati08/card-games
[INFO] tweaked toml for git repo https://github.com/pati08/card-games written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pati08/card-games on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pati08/card-games already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 23e4ea00c84074843cca2c1b80a8155d9ba55b7ac6c2884cc9be630fd8aa840b
[INFO] running `Command { std: "docker" "start" "-a" "23e4ea00c84074843cca2c1b80a8155d9ba55b7ac6c2884cc9be630fd8aa840b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23e4ea00c84074843cca2c1b80a8155d9ba55b7ac6c2884cc9be630fd8aa840b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23e4ea00c84074843cca2c1b80a8155d9ba55b7ac6c2884cc9be630fd8aa840b", kill_on_drop: false }`
[INFO] [stdout] 23e4ea00c84074843cca2c1b80a8155d9ba55b7ac6c2884cc9be630fd8aa840b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 715e107d5085c36aeed951727c5bbb4b951019ad8787c57e2dafddf200492862
[INFO] running `Command { std: "docker" "start" "-a" "715e107d5085c36aeed951727c5bbb4b951019ad8787c57e2dafddf200492862", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling card-games v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/main.rs:5:59
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand::{rngs::ThreadRng, seq::SliceRandom, thread_rng, Rng, RngCore};
[INFO] [stdout]   |                                                           ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cards_played`
[INFO] [stdout]    --> src/main.rs:124:17
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let mut cards_played: Vec<Card> = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cards_played`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player`
[INFO] [stdout]    --> src/main.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |         for player in self.players.iter_mut() {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let mut cards_played: Vec<Card> = Vec::new();
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `turn` is never used
[INFO] [stdout]   --> src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | trait PlayerAgent {
[INFO] [stdout]    |       ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn turn(
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `agent`, `score`, and `hand` are never read
[INFO] [stdout]   --> src/main.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Player {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 50 |     agent: Box<dyn PlayerAgent>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 51 |     score: i8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 52 |     hand: Hand,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `next_player` is never read
[INFO] [stdout]   --> src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct GameState {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 57 |     players: Vec<Player>,
[INFO] [stdout] 58 |     next_player: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `suit` and `value` are never read
[INFO] [stdout]   --> src/main.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct Card {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 62 |     suit: Suit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 63 |     value: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Card` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `format_short` is never used
[INFO] [stdout]   --> src/main.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | impl Card {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 73 |     fn format_short(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `clear_screen` is never used
[INFO] [stdout]    --> src/main.rs:190:4
[INFO] [stdout]     |
[INFO] [stdout] 190 | fn clear_screen() {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rng` is never read
[INFO] [stdout]    --> src/main.rs:227:5
[INFO] [stdout]     |
[INFO] [stdout] 226 | struct RandomPlayer {
[INFO] [stdout]     |        ------------ field in this struct
[INFO] [stdout] 227 |     rng: ThreadRng,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LegalResult` is never used
[INFO] [stdout]    --> src/main.rs:252:6
[INFO] [stdout]     |
[INFO] [stdout] 252 | enum LegalResult {
[INFO] [stdout]     |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_legal` is never used
[INFO] [stdout]    --> src/main.rs:258:4
[INFO] [stdout]     |
[INFO] [stdout] 258 | fn is_legal(hand: &Hand, card_index: u8, hearts_broken: bool) -> LegalResult {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     stdout().flush();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let _ = stdout().flush();
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.75s
[INFO] running `Command { std: "docker" "inspect" "715e107d5085c36aeed951727c5bbb4b951019ad8787c57e2dafddf200492862", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "715e107d5085c36aeed951727c5bbb4b951019ad8787c57e2dafddf200492862", kill_on_drop: false }`
[INFO] [stdout] 715e107d5085c36aeed951727c5bbb4b951019ad8787c57e2dafddf200492862
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 9f166bdf5769c777025aaf3b6877a88e7eeb679b24bd4d0bee2fbb188e6cd448
[INFO] running `Command { std: "docker" "start" "-a" "9f166bdf5769c777025aaf3b6877a88e7eeb679b24bd4d0bee2fbb188e6cd448", kill_on_drop: false }`
[INFO] [stderr]    Compiling card-games v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Rng`
[INFO] [stdout]  --> src/main.rs:5:59
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand::{rngs::ThreadRng, seq::SliceRandom, thread_rng, Rng, RngCore};
[INFO] [stdout]   |                                                           ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cards_played`
[INFO] [stdout]    --> src/main.rs:124:17
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let mut cards_played: Vec<Card> = Vec::new();
[INFO] [stdout]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cards_played`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `player`
[INFO] [stdout]    --> src/main.rs:125:13
[INFO] [stdout]     |
[INFO] [stdout] 125 |         for player in self.players.iter_mut() {
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_player`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:124:13
[INFO] [stdout]     |
[INFO] [stdout] 124 |         let mut cards_played: Vec<Card> = Vec::new();
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `turn` is never used
[INFO] [stdout]   --> src/main.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | trait PlayerAgent {
[INFO] [stdout]    |       ----------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 40 |     fn turn(
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `agent`, `score`, and `hand` are never read
[INFO] [stdout]   --> src/main.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 49 | struct Player {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] 50 |     agent: Box<dyn PlayerAgent>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 51 |     score: i8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 52 |     hand: Hand,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `next_player` is never read
[INFO] [stdout]   --> src/main.rs:58:5
[INFO] [stdout]    |
[INFO] [stdout] 56 | struct GameState {
[INFO] [stdout]    |        --------- field in this struct
[INFO] [stdout] 57 |     players: Vec<Player>,
[INFO] [stdout] 58 |     next_player: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `suit` and `value` are never read
[INFO] [stdout]   --> src/main.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 61 | struct Card {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 62 |     suit: Suit,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 63 |     value: u8,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Card` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `format_short` is never used
[INFO] [stdout]   --> src/main.rs:73:8
[INFO] [stdout]    |
[INFO] [stdout] 72 | impl Card {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 73 |     fn format_short(&self) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `clear_screen` is never used
[INFO] [stdout]    --> src/main.rs:190:4
[INFO] [stdout]     |
[INFO] [stdout] 190 | fn clear_screen() {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `rng` is never read
[INFO] [stdout]    --> src/main.rs:227:5
[INFO] [stdout]     |
[INFO] [stdout] 226 | struct RandomPlayer {
[INFO] [stdout]     |        ------------ field in this struct
[INFO] [stdout] 227 |     rng: ThreadRng,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `LegalResult` is never used
[INFO] [stdout]    --> src/main.rs:252:6
[INFO] [stdout]     |
[INFO] [stdout] 252 | enum LegalResult {
[INFO] [stdout]     |      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_legal` is never used
[INFO] [stdout]    --> src/main.rs:258:4
[INFO] [stdout]     |
[INFO] [stdout] 258 | fn is_legal(hand: &Hand, card_index: u8, hearts_broken: bool) -> LegalResult {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     stdout().flush();
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let _ = stdout().flush();
[INFO] [stdout]   |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "9f166bdf5769c777025aaf3b6877a88e7eeb679b24bd4d0bee2fbb188e6cd448", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f166bdf5769c777025aaf3b6877a88e7eeb679b24bd4d0bee2fbb188e6cd448", kill_on_drop: false }`
[INFO] [stdout] 9f166bdf5769c777025aaf3b6877a88e7eeb679b24bd4d0bee2fbb188e6cd448
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] e886e7e501856a526e9caf44ea63c7dd8dd8a9d2ad2df0569897cd38c6733aac
[INFO] running `Command { std: "docker" "start" "-a" "e886e7e501856a526e9caf44ea63c7dd8dd8a9d2ad2df0569897cd38c6733aac", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `Rng`
[INFO] [stderr]  --> src/main.rs:5:59
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rand::{rngs::ThreadRng, seq::SliceRandom, thread_rng, Rng, RngCore};
[INFO] [stderr]   |                                                           ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cards_played`
[INFO] [stderr]    --> src/main.rs:124:17
[INFO] [stderr]     |
[INFO] [stderr] 124 |         let mut cards_played: Vec<Card> = Vec::new();
[INFO] [stderr]     |                 ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_cards_played`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `player`
[INFO] [stderr]    --> src/main.rs:125:13
[INFO] [stderr]     |
[INFO] [stderr] 125 |         for player in self.players.iter_mut() {
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_player`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:124:13
[INFO] [stderr]     |
[INFO] [stderr] 124 |         let mut cards_played: Vec<Card> = Vec::new();
[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: method `turn` is never used
[INFO] [stderr]   --> src/main.rs:40:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | trait PlayerAgent {
[INFO] [stderr]    |       ----------- method in this trait
[INFO] [stderr] ...
[INFO] [stderr] 40 |     fn turn(
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `agent`, `score`, and `hand` are never read
[INFO] [stderr]   --> src/main.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 49 | struct Player {
[INFO] [stderr]    |        ------ fields in this struct
[INFO] [stderr] 50 |     agent: Box<dyn PlayerAgent>,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 51 |     score: i8,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 52 |     hand: Hand,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `next_player` is never read
[INFO] [stderr]   --> src/main.rs:58:5
[INFO] [stderr]    |
[INFO] [stderr] 56 | struct GameState {
[INFO] [stderr]    |        --------- field in this struct
[INFO] [stderr] 57 |     players: Vec<Player>,
[INFO] [stderr] 58 |     next_player: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: fields `suit` and `value` are never read
[INFO] [stderr]   --> src/main.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 61 | struct Card {
[INFO] [stderr]    |        ---- fields in this struct
[INFO] [stderr] 62 |     suit: Suit,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 63 |     value: u8,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Card` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: method `format_short` is never used
[INFO] [stderr]   --> src/main.rs:73:8
[INFO] [stderr]    |
[INFO] [stderr] 72 | impl Card {
[INFO] [stderr]    | --------- method in this implementation
[INFO] [stderr] 73 |     fn format_short(&self) -> String {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `clear_screen` is never used
[INFO] [stderr]    --> src/main.rs:190:4
[INFO] [stderr]     |
[INFO] [stderr] 190 | fn clear_screen() {
[INFO] [stderr]     |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field `rng` is never read
[INFO] [stderr]    --> src/main.rs:227:5
[INFO] [stderr]     |
[INFO] [stderr] 226 | struct RandomPlayer {
[INFO] [stderr]     |        ------------ field in this struct
[INFO] [stderr] 227 |     rng: ThreadRng,
[INFO] [stderr]     |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `LegalResult` is never used
[INFO] [stderr]    --> src/main.rs:252:6
[INFO] [stderr]     |
[INFO] [stderr] 252 | enum LegalResult {
[INFO] [stderr]     |      ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `is_legal` is never used
[INFO] [stderr]    --> src/main.rs:258:4
[INFO] [stderr]     |
[INFO] [stderr] 258 | fn is_legal(hand: &Hand, card_index: u8, hearts_broken: bool) -> LegalResult {
[INFO] [stderr]     |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     stdout().flush();
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]   = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]   |
[INFO] [stderr] 9 |     let _ = stdout().flush();
[INFO] [stderr]   |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `card-games` (bin "card-games" test) generated 14 warnings (run `cargo fix --bin "card-games" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/card_games-8d2d2d0d46c3890f)
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e886e7e501856a526e9caf44ea63c7dd8dd8a9d2ad2df0569897cd38c6733aac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e886e7e501856a526e9caf44ea63c7dd8dd8a9d2ad2df0569897cd38c6733aac", kill_on_drop: false }`
[INFO] [stdout] e886e7e501856a526e9caf44ea63c7dd8dd8a9d2ad2df0569897cd38c6733aac