[INFO] cloning repository https://github.com/OliverMarcusson/RustyJack
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OliverMarcusson/RustyJack" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOliverMarcusson%2FRustyJack", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOliverMarcusson%2FRustyJack'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d56fd11a8a6d61d5e9cbf9e66facad220cb07e38
[INFO] checking OliverMarcusson/RustyJack against master#7bdae134cba57426d3c56b5de737a351762445e1 for pr-123794
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOliverMarcusson%2FRustyJack" "/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/OliverMarcusson/RustyJack on toolchain 7bdae134cba57426d3c56b5de737a351762445e1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7bdae134cba57426d3c56b5de737a351762445e1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OliverMarcusson/RustyJack
[INFO] finished tweaking git repo https://github.com/OliverMarcusson/RustyJack
[INFO] tweaked toml for git repo https://github.com/OliverMarcusson/RustyJack written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/OliverMarcusson/RustyJack 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" "+7bdae134cba57426d3c56b5de737a351762445e1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking OliverMarcusson/RustyJack against try#f0a46ffcb8bbd220fe569642e5e175207d8e3fea for pr-123794
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOliverMarcusson%2FRustyJack" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/OliverMarcusson/RustyJack on toolchain f0a46ffcb8bbd220fe569642e5e175207d8e3fea
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f0a46ffcb8bbd220fe569642e5e175207d8e3fea" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OliverMarcusson/RustyJack
[INFO] finished tweaking git repo https://github.com/OliverMarcusson/RustyJack
[INFO] tweaked toml for git repo https://github.com/OliverMarcusson/RustyJack written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/OliverMarcusson/RustyJack 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" "+f0a46ffcb8bbd220fe569642e5e175207d8e3fea" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+f0a46ffcb8bbd220fe569642e5e175207d8e3fea" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e25e3874678e552dfbe8995134ba06073cfaecd513324e7b16280242c3e80b61
[INFO] running `Command { std: "docker" "start" "-a" "e25e3874678e552dfbe8995134ba06073cfaecd513324e7b16280242c3e80b61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e25e3874678e552dfbe8995134ba06073cfaecd513324e7b16280242c3e80b61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e25e3874678e552dfbe8995134ba06073cfaecd513324e7b16280242c3e80b61", kill_on_drop: false }`
[INFO] [stdout] e25e3874678e552dfbe8995134ba06073cfaecd513324e7b16280242c3e80b61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+f0a46ffcb8bbd220fe569642e5e175207d8e3fea" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f696e7e369f55d50ab0ae39cc75d913349ab5213af015c98b8497f88e5ea462
[INFO] running `Command { std: "docker" "start" "-a" "1f696e7e369f55d50ab0ae39cc75d913349ab5213af015c98b8497f88e5ea462", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking rusty_jack v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `gamemode`
[INFO] [stdout]    --> src/main.rs:289:13
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn main(gamemode: Gamemode, users: &mut Vec<User>) {
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gamemode`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `users`
[INFO] [stdout]    --> src/main.rs:289:33
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn main(gamemode: Gamemode, users: &mut Vec<User>) {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_users`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deck` is never constructed
[INFO] [stdout]  --> src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Deck {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `shuffle`, `draw`, `print`, and `to_string` are never used
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Deck {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 11 |     fn new(size: u8) -> Deck {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn shuffle(&mut self, mut iterations: u32) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn draw(&mut self, user: Option<&mut User>, amount: u32) -> Option<Vec<Card>> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn to_string(vec: &Vec<Card>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `suite` and `color` are never read
[INFO] [stdout]   --> src/main.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Card {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 94 |     value: u32,
[INFO] [stdout] 95 |     suite: Suite,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |     color: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `make` is never used
[INFO] [stdout]    --> src/main.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl Card {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 102 |     fn make(val: u32, suite: Suite) -> Card {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Hearts`, `Spades`, `Diamonds`, and `Clovers` are never constructed
[INFO] [stdout]    --> src/main.rs:154:5
[INFO] [stdout]     |
[INFO] [stdout] 153 | enum Suite {
[INFO] [stdout]     |      ----- variants in this enum
[INFO] [stdout] 154 |     Hearts,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 155 |     Spades,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 156 |     Diamonds,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 157 |     Clovers,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `tokens`, `hand`, and `is_dealer` are never read
[INFO] [stdout]    --> src/main.rs:161:5
[INFO] [stdout]     |
[INFO] [stdout] 160 | struct User {
[INFO] [stdout]     |        ---- fields in this struct
[INFO] [stdout] 161 |     id: String,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 162 |     tokens: u32,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 163 |     hand: Hand,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 164 |     is_dealer: bool
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `return_hand` is never used
[INFO] [stdout]    --> src/main.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 166 | impl User {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 173 |     fn return_hand(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `surrender` is never read
[INFO] [stdout]    --> src/main.rs:203:5
[INFO] [stdout]     |
[INFO] [stdout] 197 | struct Hand {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 203 |     surrender: bool
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_information` is never used
[INFO] [stdout]    --> src/main.rs:225:8
[INFO] [stdout]     |
[INFO] [stdout] 205 | impl Hand {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 225 |     fn print_information(&self, user: Option<&User>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]    --> src/main.rs:235:6
[INFO] [stdout]     |
[INFO] [stdout] 235 | enum Result {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `to_string` and `compare` are never used
[INFO] [stdout]    --> src/main.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 242 | impl Result {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] 243 |     fn to_string(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 253 |     fn compare(user: &User, dealer: &User) -> Result {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `OfflineMulti` and `Online` are never constructed
[INFO] [stdout]    --> src/main.rs:285:5
[INFO] [stdout]     |
[INFO] [stdout] 283 | enum Gamemode {
[INFO] [stdout]     |      -------- variants in this enum
[INFO] [stdout] 284 |     OfflineSingle,
[INFO] [stdout] 285 |     OfflineMulti,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 286 |     Online,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `time_to_blackjack` is never used
[INFO] [stdout]  --> src/benchmarking.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn time_to_blackjack() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/benchmarking.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn test(iterations: u64, verbose: bool) -> [u64; 3] {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `gamemode`
[INFO] [stdout]    --> src/main.rs:289:13
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn main(gamemode: Gamemode, users: &mut Vec<User>) {
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_gamemode`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `users`
[INFO] [stdout]    --> src/main.rs:289:33
[INFO] [stdout]     |
[INFO] [stdout] 289 |     fn main(gamemode: Gamemode, users: &mut Vec<User>) {
[INFO] [stdout]     |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_users`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Deck` is never constructed
[INFO] [stdout]  --> src/main.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct Deck {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `shuffle`, `draw`, `print`, and `to_string` are never used
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl Deck {
[INFO] [stdout]    | --------- associated items in this implementation
[INFO] [stdout] 11 |     fn new(size: u8) -> Deck {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn shuffle(&mut self, mut iterations: u32) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 53 |     fn draw(&mut self, user: Option<&mut User>, amount: u32) -> Option<Vec<Card>> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 82 |     fn to_string(vec: &Vec<Card>) -> String {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `suite` and `color` are never read
[INFO] [stdout]   --> src/main.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 93 | struct Card {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 94 |     value: u32,
[INFO] [stdout] 95 |     suite: Suite,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 99 |     color: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `make` is never used
[INFO] [stdout]    --> src/main.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl Card {
[INFO] [stdout]     | --------- associated function in this implementation
[INFO] [stdout] 102 |     fn make(val: u32, suite: Suite) -> Card {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Hearts`, `Spades`, `Diamonds`, and `Clovers` are never constructed
[INFO] [stdout]    --> src/main.rs:154:5
[INFO] [stdout]     |
[INFO] [stdout] 153 | enum Suite {
[INFO] [stdout]     |      ----- variants in this enum
[INFO] [stdout] 154 |     Hearts,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 155 |     Spades,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 156 |     Diamonds,
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout] 157 |     Clovers,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `id`, `tokens`, `hand`, and `is_dealer` are never read
[INFO] [stdout]    --> src/main.rs:161:5
[INFO] [stdout]     |
[INFO] [stdout] 160 | struct User {
[INFO] [stdout]     |        ---- fields in this struct
[INFO] [stdout] 161 |     id: String,
[INFO] [stdout]     |     ^^
[INFO] [stdout] 162 |     tokens: u32,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 163 |     hand: Hand,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 164 |     is_dealer: bool
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `return_hand` is never used
[INFO] [stdout]    --> src/main.rs:173:8
[INFO] [stdout]     |
[INFO] [stdout] 166 | impl User {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 173 |     fn return_hand(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `surrender` is never read
[INFO] [stdout]    --> src/main.rs:203:5
[INFO] [stdout]     |
[INFO] [stdout] 197 | struct Hand {
[INFO] [stdout]     |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 203 |     surrender: bool
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print_information` is never used
[INFO] [stdout]    --> src/main.rs:225:8
[INFO] [stdout]     |
[INFO] [stdout] 205 | impl Hand {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 225 |     fn print_information(&self, user: Option<&User>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Result` is never used
[INFO] [stdout]    --> src/main.rs:235:6
[INFO] [stdout]     |
[INFO] [stdout] 235 | enum Result {
[INFO] [stdout]     |      ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `to_string` and `compare` are never used
[INFO] [stdout]    --> src/main.rs:243:8
[INFO] [stdout]     |
[INFO] [stdout] 242 | impl Result {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] 243 |     fn to_string(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 253 |     fn compare(user: &User, dealer: &User) -> Result {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `OfflineMulti` and `Online` are never constructed
[INFO] [stdout]    --> src/main.rs:285:5
[INFO] [stdout]     |
[INFO] [stdout] 283 | enum Gamemode {
[INFO] [stdout]     |      -------- variants in this enum
[INFO] [stdout] 284 |     OfflineSingle,
[INFO] [stdout] 285 |     OfflineMulti,
[INFO] [stdout]     |     ^^^^^^^^^^^^
[INFO] [stdout] 286 |     Online,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `time_to_blackjack` is never used
[INFO] [stdout]  --> src/benchmarking.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn time_to_blackjack() {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/benchmarking.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn test(iterations: u64, verbose: bool) -> [u64; 3] {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.78s
[INFO] running `Command { std: "docker" "inspect" "1f696e7e369f55d50ab0ae39cc75d913349ab5213af015c98b8497f88e5ea462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f696e7e369f55d50ab0ae39cc75d913349ab5213af015c98b8497f88e5ea462", kill_on_drop: false }`
[INFO] [stdout] 1f696e7e369f55d50ab0ae39cc75d913349ab5213af015c98b8497f88e5ea462