[INFO] cloning repository https://github.com/edliu9350/poker_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/edliu9350/poker_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedliu9350%2Fpoker_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedliu9350%2Fpoker_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d31c8df72e1fedd3ed035c7e1b041a21bc8c38db
[INFO] checking edliu9350/poker_rust against master#3350c1eb3fd8fe1bee1ed4c76944d707bd256876 for pr-140558
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedliu9350%2Fpoker_rust" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/edliu9350/poker_rust on toolchain 3350c1eb3fd8fe1bee1ed4c76944d707bd256876
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/edliu9350/poker_rust
[INFO] finished tweaking git repo https://github.com/edliu9350/poker_rust
[INFO] tweaked toml for git repo https://github.com/edliu9350/poker_rust written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/edliu9350/poker_rust 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" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5517ca7783093da3c069c4f5c10977663c1fdfe6afc639be6153d217f8b3ff09
[INFO] running `Command { std: "docker" "start" "-a" "5517ca7783093da3c069c4f5c10977663c1fdfe6afc639be6153d217f8b3ff09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5517ca7783093da3c069c4f5c10977663c1fdfe6afc639be6153d217f8b3ff09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5517ca7783093da3c069c4f5c10977663c1fdfe6afc639be6153d217f8b3ff09", kill_on_drop: false }`
[INFO] [stdout] 5517ca7783093da3c069c4f5c10977663c1fdfe6afc639be6153d217f8b3ff09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+3350c1eb3fd8fe1bee1ed4c76944d707bd256876" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16faa45432f718ef82509f470a44459323e94a6ef3901bc610da75b9e15b68b1
[INFO] running `Command { std: "docker" "start" "-a" "16faa45432f718ef82509f470a44459323e94a6ef3901bc610da75b9e15b68b1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.125
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking getrandom v0.2.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking poker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> src/engine.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> src/engine.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:183:21
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 let mut sort1: Vec<Name> = hand1.iter().map(|card| card.name).collect();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:184:21
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 let mut sort2: Vec<Name> = hand2.iter().map(|card| card.name).collect();
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:186:21
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 let mut pair1 = get_paired_vec(&sort1);
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:187:21
[INFO] [stdout]     |
[INFO] [stdout] 187 |                 let mut pair2 = get_paired_vec(&sort2);
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `method` is never read
[INFO] [stdout]   --> src/dealer.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Dealer {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 11 |     method: Method,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:183:21
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 let mut sort1: Vec<Name> = hand1.iter().map(|card| card.name).collect();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:184:21
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 let mut sort2: Vec<Name> = hand2.iter().map(|card| card.name).collect();
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:186:21
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 let mut pair1 = get_paired_vec(&sort1);
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:187:21
[INFO] [stdout]     |
[INFO] [stdout] 187 |                 let mut pair2 = get_paired_vec(&sort2);
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `method` is never read
[INFO] [stdout]   --> src/dealer.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Dealer {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 11 |     method: Method,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> src/engine.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BTreeSet`
[INFO] [stdout]  --> src/engine.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{BTreeSet, HashMap};
[INFO] [stdout]   |                        ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:183:21
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 let mut sort1: Vec<Name> = hand1.iter().map(|card| card.name).collect();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:184:21
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 let mut sort2: Vec<Name> = hand2.iter().map(|card| card.name).collect();
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:186:21
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 let mut pair1 = get_paired_vec(&sort1);
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:187:21
[INFO] [stdout]     |
[INFO] [stdout] 187 |                 let mut pair2 = get_paired_vec(&sort2);
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:183:21
[INFO] [stdout]     |
[INFO] [stdout] 183 |                 let mut sort1: Vec<Name> = hand1.iter().map(|card| card.name).collect();
[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: variant `AceLow` is never constructed
[INFO] [stdout]  --> src/card.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Name {
[INFO] [stdout]   |          ---- variant in this enum
[INFO] [stdout] 3 |     AceLow = 1,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Name` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:184:21
[INFO] [stdout]     |
[INFO] [stdout] 184 |                 let mut sort2: Vec<Name> = hand2.iter().map(|card| card.name).collect();
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:186:21
[INFO] [stdout]     |
[INFO] [stdout] 186 |                 let mut pair1 = get_paired_vec(&sort1);
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/engine.rs:187:21
[INFO] [stdout]     |
[INFO] [stdout] 187 |                 let mut pair2 = get_paired_vec(&sort2);
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/card.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Card {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 34 |     /// constructor
[INFO] [stdout] 35 |     pub fn new(name: Name, suit: Suit) -> Card {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `method` is never read
[INFO] [stdout]   --> src/dealer.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Dealer {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 11 |     method: Method,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `RoyalFlush` is never constructed
[INFO] [stdout]   --> src/engine.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub enum Rank {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 19 |     RoyalFlush = 9,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rank` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]  --> src/player.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Player {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 |     pub age: u8,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `AceLow` is never constructed
[INFO] [stdout]  --> src/card.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub enum Name {
[INFO] [stdout]   |          ---- variant in this enum
[INFO] [stdout] 3 |     AceLow = 1,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Name` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/card.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Card {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] 34 |     /// constructor
[INFO] [stdout] 35 |     pub fn new(name: Name, suit: Suit) -> Card {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `method` is never read
[INFO] [stdout]   --> src/dealer.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Dealer {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 11 |     method: Method,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `RoyalFlush` is never constructed
[INFO] [stdout]   --> src/engine.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | pub enum Rank {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 19 |     RoyalFlush = 9,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Rank` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `age` is never read
[INFO] [stdout]  --> src/player.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Player {
[INFO] [stdout]   |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 |     pub age: u8,
[INFO] [stdout]   |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.25s
[INFO] running `Command { std: "docker" "inspect" "16faa45432f718ef82509f470a44459323e94a6ef3901bc610da75b9e15b68b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16faa45432f718ef82509f470a44459323e94a6ef3901bc610da75b9e15b68b1", kill_on_drop: false }`
[INFO] [stdout] 16faa45432f718ef82509f470a44459323e94a6ef3901bc610da75b9e15b68b1
