[INFO] cloning repository https://github.com/hitsan/loveletter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hitsan/loveletter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhitsan%2Floveletter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhitsan%2Floveletter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f06ca95b60be17d135578c9282b35c5ae92b83b7
[INFO] checking hitsan/loveletter against try#53f0b05ecbcf011a1f77f1c627304e87ebd05801 for pr-154492-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhitsan%2Floveletter" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/hitsan/loveletter
[INFO] finished tweaking git repo https://github.com/hitsan/loveletter
[INFO] tweaked toml for git repo https://github.com/hitsan/loveletter written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/hitsan/loveletter on toolchain 53f0b05ecbcf011a1f77f1c627304e87ebd05801
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/hitsan/loveletter 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" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c9a5a3248cd31976982044c5f6c6fe2aad17b94fa9f120cd7bf63092c9e15a8
[INFO] running `Command { std: "docker" "start" "-a" "4c9a5a3248cd31976982044c5f6c6fe2aad17b94fa9f120cd7bf63092c9e15a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c9a5a3248cd31976982044c5f6c6fe2aad17b94fa9f120cd7bf63092c9e15a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c9a5a3248cd31976982044c5f6c6fe2aad17b94fa9f120cd7bf63092c9e15a8", kill_on_drop: false }`
[INFO] [stdout] 4c9a5a3248cd31976982044c5f6c6fe2aad17b94fa9f120cd7bf63092c9e15a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+53f0b05ecbcf011a1f77f1c627304e87ebd05801" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19791fe0a8fcdd1a078ffd0a51cb8dfc540988402dc3b4303a12e5bb65763d22
[INFO] running `Command { std: "docker" "start" "-a" "19791fe0a8fcdd1a078ffd0a51cb8dfc540988402dc3b4303a12e5bb65763d22", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.87
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking loveletter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/game/board.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Board` is never constructed
[INFO] [stdout]  --> src/game/board.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Board {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/game/board.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Board {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 18 |     pub fn new(players: Players, loosers: Loosers, deck: Deck, discard_pile: DiscardPile, sercret_card: Card) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `shuffle` and `init` are never used
[INFO] [stdout]   --> src/card/deck.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl Deck {
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn shuffle(mut cards: Vec<Card>) -> Vec<Card> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn init(cards: Vec<Card>, minimum_card_num: usize) -> Result<Self, String> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Loosers` is never constructed
[INFO] [stdout]   --> src/user/looser.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Loosers(Vec<Looser>);
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `added` are never used
[INFO] [stdout]   --> src/user/looser.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Loosers {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 18 |     pub fn new(loosers: Vec<Looser>) -> Loosers {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn added(self, looser: Looser) -> Loosers {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Name` is never used
[INFO] [stdout]  --> src/game/board.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub type Name = String;
[INFO] [stdout]   |          ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Board` is never constructed
[INFO] [stdout]  --> src/game/board.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct Board {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/game/board.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Board {
[INFO] [stdout]    | ---------- associated function in this implementation
[INFO] [stdout] 18 |     pub fn new(players: Players, loosers: Loosers, deck: Deck, discard_pile: DiscardPile, sercret_card: Card) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Card` is never used
[INFO] [stdout]  --> src/card/card.rs:2:10
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Card {
[INFO] [stdout]   |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deck` is never constructed
[INFO] [stdout]  --> src/card/deck.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Deck(Vec<Card>);
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `shuffle`, `init`, and `draw` are never used
[INFO] [stdout]   --> src/card/deck.rs:9:12
[INFO] [stdout]    |
[INFO] [stdout]  8 | impl Deck {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout]  9 |     pub fn new(cards: Vec<Card>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 |     fn shuffle(mut cards: Vec<Card>) -> Vec<Card> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 19 |     pub fn init(cards: Vec<Card>, minimum_card_num: usize) -> Result<Self, String> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 29 |     pub fn draw(self) -> Option<(Card, Self)> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Discard` is never constructed
[INFO] [stdout]  --> src/card/discard.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Discard {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/card/discard.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Discard {
[INFO] [stdout]    | ------------ associated function in this implementation
[INFO] [stdout] 11 |     pub fn new(name: Name, card: Card) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DiscardPile` is never constructed
[INFO] [stdout]   --> src/card/discard.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct DiscardPile(Vec<Discard>);
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `added` are never used
[INFO] [stdout]   --> src/card/discard.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl DiscardPile {
[INFO] [stdout]    | ---------------- associated items in this implementation
[INFO] [stdout] 20 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     pub fn added(self, discard: Discard) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Player` is never constructed
[INFO] [stdout]  --> src/user/player.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Player{
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `loose`, and `exchange` are never used
[INFO] [stdout]   --> src/user/player.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | impl Player {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 13 |     pub fn new(name: Name, card: Card) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     pub fn loose(self) -> (Looser, Discard) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |     fn exchange(self, picked: Card) -> (Self, Card) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Players` is never constructed
[INFO] [stdout]   --> src/user/player.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct Players(Vec<Player>);
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `pick_current_player`, `rotated`, `droped`, and `peek` are never used
[INFO] [stdout]   --> src/user/player.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | impl Players {
[INFO] [stdout]    | ------------ methods in this implementation
[INFO] [stdout] 38 |     pub fn pick_current_player(&self) -> &Player {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     pub fn rotated(self) -> Players {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     pub fn droped(self, name: &Name) -> Result<(Player, Players), String> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 70 |     pub fn peek(&self, target: &Name) -> Option<&Player> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Looser` is never constructed
[INFO] [stdout]  --> src/user/looser.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Looser {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/user/looser.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | impl Looser {
[INFO] [stdout]   | ----------- associated function in this implementation
[INFO] [stdout] 9 |     pub fn new(name: Name) -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Loosers` is never constructed
[INFO] [stdout]   --> src/user/looser.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Loosers(Vec<Looser>);
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `added` are never used
[INFO] [stdout]   --> src/user/looser.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Loosers {
[INFO] [stdout]    | ------------ associated items in this implementation
[INFO] [stdout] 18 |     pub fn new(loosers: Vec<Looser>) -> Loosers {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn added(self, looser: Looser) -> Loosers {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.72s
[INFO] running `Command { std: "docker" "inspect" "19791fe0a8fcdd1a078ffd0a51cb8dfc540988402dc3b4303a12e5bb65763d22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19791fe0a8fcdd1a078ffd0a51cb8dfc540988402dc3b4303a12e5bb65763d22", kill_on_drop: false }`
[INFO] [stdout] 19791fe0a8fcdd1a078ffd0a51cb8dfc540988402dc3b4303a12e5bb65763d22