[INFO] cloning repository https://github.com/codonnell/blackjack_sim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/codonnell/blackjack_sim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodonnell%2Fblackjack_sim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodonnell%2Fblackjack_sim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b6200bc679f6e8e9e273572818c12b4d71972183
[INFO] testing codonnell/blackjack_sim against master#d98a5da813da67eb189387b8ccfb73cf481275d8+rustflags=-Copt-level=3 for pr-138759
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcodonnell%2Fblackjack_sim" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/codonnell/blackjack_sim
[INFO] finished tweaking git repo https://github.com/codonnell/blackjack_sim
[INFO] tweaked toml for git repo https://github.com/codonnell/blackjack_sim written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/codonnell/blackjack_sim on toolchain d98a5da813da67eb189387b8ccfb73cf481275d8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/codonnell/blackjack_sim 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" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_syscall v0.1.31
[INFO] [stderr]   Downloaded magenta-sys v0.1.1
[INFO] [stderr]   Downloaded rand v0.3.16
[INFO] [stderr]   Downloaded magenta v0.1.1
[INFO] [stderr]   Downloaded custom_derive v0.1.7
[INFO] [stderr]   Downloaded memchr v1.0.1
[INFO] [stderr]   Downloaded csv-core v0.1.3
[INFO] [stderr]   Downloaded time v0.1.38
[INFO] [stderr]   Downloaded serde v1.0.12
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded conv v0.3.3
[INFO] [stderr]   Downloaded libc v0.2.47
[INFO] [stderr]   Downloaded csv v1.0.0-beta.4
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82bc59e32f5fff0517dc0964ce422bf7afcfb28b43ea68d6d17cffeb94ee75e6
[INFO] running `Command { std: "docker" "start" "-a" "82bc59e32f5fff0517dc0964ce422bf7afcfb28b43ea68d6d17cffeb94ee75e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82bc59e32f5fff0517dc0964ce422bf7afcfb28b43ea68d6d17cffeb94ee75e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82bc59e32f5fff0517dc0964ce422bf7afcfb28b43ea68d6d17cffeb94ee75e6", kill_on_drop: false }`
[INFO] [stdout] 82bc59e32f5fff0517dc0964ce422bf7afcfb28b43ea68d6d17cffeb94ee75e6
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a953da2172bc27f28cbaabaabfaf1776d713aba9b7abcea8d2d453fd6328fde
[INFO] running `Command { std: "docker" "start" "-a" "8a953da2172bc27f28cbaabaabfaf1776d713aba9b7abcea8d2d453fd6328fde", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]    Compiling serde v1.0.12
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling rand v0.3.16
[INFO] [stderr]    Compiling time v0.1.38
[INFO] [stderr]    Compiling csv-core v0.1.3
[INFO] [stderr]    Compiling csv v1.0.0-beta.4
[INFO] [stderr]    Compiling blackjack_sim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::env;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]     --> src/main.rs:1253:8
[INFO] [stdout]      |
[INFO] [stdout] 1253 |     if (cards.len() == 11) {
[INFO] [stdout]      |        ^                 ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1253 -     if (cards.len() == 11) {
[INFO] [stdout] 1253 +     if cards.len() == 11 {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/main.rs:1146:58
[INFO] [stdout]      |
[INFO] [stdout] 1146 | fn deck_samples(filename: &str) -> Result<Vec<Deck>, Box<Error>> {
[INFO] [stdout]      |                                                          ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1146 | fn deck_samples(filename: &str) -> Result<Vec<Deck>, Box<dyn Error>> {
[INFO] [stdout]      |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/main.rs:1170:64
[INFO] [stdout]      |
[INFO] [stdout] 1170 | fn computed_decks(filename: &str) -> Result<HashSet<Deck>, Box<Error>> {
[INFO] [stdout]      |                                                                ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1170 | fn computed_decks(filename: &str) -> Result<HashSet<Deck>, Box<dyn Error>> {
[INFO] [stdout]      |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/main.rs:1196:73
[INFO] [stdout]      |
[INFO] [stdout] 1196 | fn random_deck(samples_path: &str, data_path: &str) -> Result<Deck, Box<Error>> {
[INFO] [stdout]      |                                                                         ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1196 | fn random_deck(samples_path: &str, data_path: &str) -> Result<Deck, Box<dyn Error>> {
[INFO] [stdout]      |                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/main.rs:1211:89
[INFO] [stdout]      |
[INFO] [stdout] 1211 | fn append_advantage_data(data_path: &str, deck: Deck, advantage: f32) -> Result<(), Box<Error>> {
[INFO] [stdout]      |                                                                                         ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1211 | fn append_advantage_data(data_path: &str, deck: Deck, advantage: f32) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]      |                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:705:26
[INFO] [stdout]     |
[INFO] [stdout] 705 | fn insurance_expectation(mut state: &mut GameState) -> f32 {
[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: unused variable: `deck`
[INFO] [stdout]    --> src/main.rs:840:19
[INFO] [stdout]     |
[INFO] [stdout] 840 | fn will_reshuffle(deck: &Deck) -> bool {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_deck`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:844:19
[INFO] [stdout]     |
[INFO] [stdout] 844 | fn reshuffle_deck(mut state: &mut GameState) {
[INFO] [stdout]     |                   ----^^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_expectation` is never read
[INFO] [stdout]     --> src/main.rs:1298:13
[INFO] [stdout]      |
[INFO] [stdout] 1298 |             best_expectation = split_exp;
[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: function `will_reshuffle` is never used
[INFO] [stdout]    --> src/main.rs:840:4
[INFO] [stdout]     |
[INFO] [stdout] 840 | fn will_reshuffle(deck: &Deck) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reshuffle_deck` is never used
[INFO] [stdout]    --> src/main.rs:844:4
[INFO] [stdout]     |
[INFO] [stdout] 844 | fn reshuffle_deck(mut state: &mut GameState) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all_deck_expectations` is never used
[INFO] [stdout]     --> src/main.rs:1127:4
[INFO] [stdout]      |
[INFO] [stdout] 1127 | fn all_deck_expectations() -> () {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `deck_samples` is never used
[INFO] [stdout]     --> src/main.rs:1146:4
[INFO] [stdout]      |
[INFO] [stdout] 1146 | fn deck_samples(filename: &str) -> Result<Vec<Deck>, Box<Error>> {
[INFO] [stdout]      |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `computed_decks` is never used
[INFO] [stdout]     --> src/main.rs:1170:4
[INFO] [stdout]      |
[INFO] [stdout] 1170 | fn computed_decks(filename: &str) -> Result<HashSet<Deck>, Box<Error>> {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_deck` is never used
[INFO] [stdout]     --> src/main.rs:1196:4
[INFO] [stdout]      |
[INFO] [stdout] 1196 | fn random_deck(samples_path: &str, data_path: &str) -> Result<Deck, Box<Error>> {
[INFO] [stdout]      |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `append_advantage_data` is never used
[INFO] [stdout]     --> src/main.rs:1211:4
[INFO] [stdout]      |
[INFO] [stdout] 1211 | fn append_advantage_data(data_path: &str, deck: Deck, advantage: f32) -> Result<(), Box<Error>> {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `continuously_compute_deck_advantages` is never used
[INFO] [stdout]     --> src/main.rs:1221:4
[INFO] [stdout]      |
[INFO] [stdout] 1221 | fn continuously_compute_deck_advantages(samples_path: &str, data_path: &str) -> () {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OrderedDeck` is never constructed
[INFO] [stdout]     --> src/main.rs:1238:8
[INFO] [stdout]      |
[INFO] [stdout] 1238 | struct OrderedDeck {
[INFO] [stdout]      |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw` is never used
[INFO] [stdout]     --> src/main.rs:1244:8
[INFO] [stdout]      |
[INFO] [stdout] 1243 | impl OrderedDeck {
[INFO] [stdout]      | ---------------- method in this implementation
[INFO] [stdout] 1244 |     fn draw(&mut self) -> u16 {
[INFO] [stdout]      |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_deck` is never used
[INFO] [stdout]     --> src/main.rs:1251:4
[INFO] [stdout]      |
[INFO] [stdout] 1251 | fn parse_deck(deck_str: &str) -> Deck {
[INFO] [stdout]      |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_hand` is never used
[INFO] [stdout]     --> src/main.rs:1267:4
[INFO] [stdout]      |
[INFO] [stdout] 1267 | fn parse_hand(hand_str: &str) -> Vec<u16> {
[INFO] [stdout]      |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `best_action` is never used
[INFO] [stdout]     --> src/main.rs:1280:4
[INFO] [stdout]      |
[INFO] [stdout] 1280 | fn best_action(mut state: &mut GameState) -> String {
[INFO] [stdout]      |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.67s
[INFO] running `Command { std: "docker" "inspect" "8a953da2172bc27f28cbaabaabfaf1776d713aba9b7abcea8d2d453fd6328fde", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a953da2172bc27f28cbaabaabfaf1776d713aba9b7abcea8d2d453fd6328fde", kill_on_drop: false }`
[INFO] [stdout] 8a953da2172bc27f28cbaabaabfaf1776d713aba9b7abcea8d2d453fd6328fde
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7126461715b918516b336f6bbe726dee17a8349db4c178363883c6f08f1a1e5
[INFO] running `Command { std: "docker" "start" "-a" "c7126461715b918516b336f6bbe726dee17a8349db4c178363883c6f08f1a1e5", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling blackjack_sim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]   --> src/main.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::env;
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use std::thread;
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]     --> src/main.rs:1253:8
[INFO] [stdout]      |
[INFO] [stdout] 1253 |     if (cards.len() == 11) {
[INFO] [stdout]      |        ^                 ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1253 -     if (cards.len() == 11) {
[INFO] [stdout] 1253 +     if cards.len() == 11 {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/main.rs:1146:58
[INFO] [stdout]      |
[INFO] [stdout] 1146 | fn deck_samples(filename: &str) -> Result<Vec<Deck>, Box<Error>> {
[INFO] [stdout]      |                                                          ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1146 | fn deck_samples(filename: &str) -> Result<Vec<Deck>, Box<dyn Error>> {
[INFO] [stdout]      |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/main.rs:1170:64
[INFO] [stdout]      |
[INFO] [stdout] 1170 | fn computed_decks(filename: &str) -> Result<HashSet<Deck>, Box<Error>> {
[INFO] [stdout]      |                                                                ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1170 | fn computed_decks(filename: &str) -> Result<HashSet<Deck>, Box<dyn Error>> {
[INFO] [stdout]      |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/main.rs:1196:73
[INFO] [stdout]      |
[INFO] [stdout] 1196 | fn random_deck(samples_path: &str, data_path: &str) -> Result<Deck, Box<Error>> {
[INFO] [stdout]      |                                                                         ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1196 | fn random_deck(samples_path: &str, data_path: &str) -> Result<Deck, Box<dyn Error>> {
[INFO] [stdout]      |                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]     --> src/main.rs:1211:89
[INFO] [stdout]      |
[INFO] [stdout] 1211 | fn append_advantage_data(data_path: &str, deck: Deck, advantage: f32) -> Result<(), Box<Error>> {
[INFO] [stdout]      |                                                                                         ^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]      |
[INFO] [stdout] 1211 | fn append_advantage_data(data_path: &str, deck: Deck, advantage: f32) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]      |                                                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:705:26
[INFO] [stdout]     |
[INFO] [stdout] 705 | fn insurance_expectation(mut state: &mut GameState) -> f32 {
[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: unused variable: `deck`
[INFO] [stdout]    --> src/main.rs:840:19
[INFO] [stdout]     |
[INFO] [stdout] 840 | fn will_reshuffle(deck: &Deck) -> bool {
[INFO] [stdout]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_deck`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:844:19
[INFO] [stdout]     |
[INFO] [stdout] 844 | fn reshuffle_deck(mut state: &mut GameState) {
[INFO] [stdout]     |                   ----^^^^^
[INFO] [stdout]     |                   |
[INFO] [stdout]     |                   help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_expectation` is never read
[INFO] [stdout]     --> src/main.rs:1298:13
[INFO] [stdout]      |
[INFO] [stdout] 1298 |             best_expectation = split_exp;
[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: function `will_reshuffle` is never used
[INFO] [stdout]    --> src/main.rs:840:4
[INFO] [stdout]     |
[INFO] [stdout] 840 | fn will_reshuffle(deck: &Deck) -> bool {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `all_deck_expectations` is never used
[INFO] [stdout]     --> src/main.rs:1127:4
[INFO] [stdout]      |
[INFO] [stdout] 1127 | fn all_deck_expectations() -> () {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `deck_samples` is never used
[INFO] [stdout]     --> src/main.rs:1146:4
[INFO] [stdout]      |
[INFO] [stdout] 1146 | fn deck_samples(filename: &str) -> Result<Vec<Deck>, Box<Error>> {
[INFO] [stdout]      |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `computed_decks` is never used
[INFO] [stdout]     --> src/main.rs:1170:4
[INFO] [stdout]      |
[INFO] [stdout] 1170 | fn computed_decks(filename: &str) -> Result<HashSet<Deck>, Box<Error>> {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `random_deck` is never used
[INFO] [stdout]     --> src/main.rs:1196:4
[INFO] [stdout]      |
[INFO] [stdout] 1196 | fn random_deck(samples_path: &str, data_path: &str) -> Result<Deck, Box<Error>> {
[INFO] [stdout]      |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `append_advantage_data` is never used
[INFO] [stdout]     --> src/main.rs:1211:4
[INFO] [stdout]      |
[INFO] [stdout] 1211 | fn append_advantage_data(data_path: &str, deck: Deck, advantage: f32) -> Result<(), Box<Error>> {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `continuously_compute_deck_advantages` is never used
[INFO] [stdout]     --> src/main.rs:1221:4
[INFO] [stdout]      |
[INFO] [stdout] 1221 | fn continuously_compute_deck_advantages(samples_path: &str, data_path: &str) -> () {
[INFO] [stdout]      |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `OrderedDeck` is never constructed
[INFO] [stdout]     --> src/main.rs:1238:8
[INFO] [stdout]      |
[INFO] [stdout] 1238 | struct OrderedDeck {
[INFO] [stdout]      |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `draw` is never used
[INFO] [stdout]     --> src/main.rs:1244:8
[INFO] [stdout]      |
[INFO] [stdout] 1243 | impl OrderedDeck {
[INFO] [stdout]      | ---------------- method in this implementation
[INFO] [stdout] 1244 |     fn draw(&mut self) -> u16 {
[INFO] [stdout]      |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_deck` is never used
[INFO] [stdout]     --> src/main.rs:1251:4
[INFO] [stdout]      |
[INFO] [stdout] 1251 | fn parse_deck(deck_str: &str) -> Deck {
[INFO] [stdout]      |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_hand` is never used
[INFO] [stdout]     --> src/main.rs:1267:4
[INFO] [stdout]      |
[INFO] [stdout] 1267 | fn parse_hand(hand_str: &str) -> Vec<u16> {
[INFO] [stdout]      |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `best_action` is never used
[INFO] [stdout]     --> src/main.rs:1280:4
[INFO] [stdout]      |
[INFO] [stdout] 1280 | fn best_action(mut state: &mut GameState) -> String {
[INFO] [stdout]      |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `Command { std: "docker" "inspect" "c7126461715b918516b336f6bbe726dee17a8349db4c178363883c6f08f1a1e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7126461715b918516b336f6bbe726dee17a8349db4c178363883c6f08f1a1e5", kill_on_drop: false }`
[INFO] [stdout] c7126461715b918516b336f6bbe726dee17a8349db4c178363883c6f08f1a1e5
[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 -Copt-level=3" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d98a5da813da67eb189387b8ccfb73cf481275d8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f5965f07db495ee8ab6d0a966ca6e9c1ed45df73c8b0dc69a3bfa0961cb004ff
[INFO] running `Command { std: "docker" "start" "-a" "f5965f07db495ee8ab6d0a966ca6e9c1ed45df73c8b0dc69a3bfa0961cb004ff", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::env;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use std::thread;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]     --> src/main.rs:1253:8
[INFO] [stderr]      |
[INFO] [stderr] 1253 |     if (cards.len() == 11) {
[INFO] [stderr]      |        ^                 ^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr] 1253 -     if (cards.len() == 11) {
[INFO] [stderr] 1253 +     if cards.len() == 11 {
[INFO] [stderr]      |
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:1146:58
[INFO] [stderr]      |
[INFO] [stderr] 1146 | fn deck_samples(filename: &str) -> Result<Vec<Deck>, Box<Error>> {
[INFO] [stderr]      |                                                          ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]      = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]      |
[INFO] [stderr] 1146 | fn deck_samples(filename: &str) -> Result<Vec<Deck>, Box<dyn Error>> {
[INFO] [stderr]      |                                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:1170:64
[INFO] [stderr]      |
[INFO] [stderr] 1170 | fn computed_decks(filename: &str) -> Result<HashSet<Deck>, Box<Error>> {
[INFO] [stderr]      |                                                                ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]      |
[INFO] [stderr] 1170 | fn computed_decks(filename: &str) -> Result<HashSet<Deck>, Box<dyn Error>> {
[INFO] [stderr]      |                                                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:1196:73
[INFO] [stderr]      |
[INFO] [stderr] 1196 | fn random_deck(samples_path: &str, data_path: &str) -> Result<Deck, Box<Error>> {
[INFO] [stderr]      |                                                                         ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]      |
[INFO] [stderr] 1196 | fn random_deck(samples_path: &str, data_path: &str) -> Result<Deck, Box<dyn Error>> {
[INFO] [stderr]      |                                                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]     --> src/main.rs:1211:89
[INFO] [stderr]      |
[INFO] [stderr] 1211 | fn append_advantage_data(data_path: &str, deck: Deck, advantage: f32) -> Result<(), Box<Error>> {
[INFO] [stderr]      |                                                                                         ^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]      = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]      |
[INFO] [stderr] 1211 | fn append_advantage_data(data_path: &str, deck: Deck, advantage: f32) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]      |                                                                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:705:26
[INFO] [stderr]     |
[INFO] [stderr] 705 | fn insurance_expectation(mut state: &mut GameState) -> f32 {
[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: unused variable: `deck`
[INFO] [stderr]    --> src/main.rs:840:19
[INFO] [stderr]     |
[INFO] [stderr] 840 | fn will_reshuffle(deck: &Deck) -> bool {
[INFO] [stderr]     |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_deck`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:844:19
[INFO] [stderr]     |
[INFO] [stderr] 844 | fn reshuffle_deck(mut state: &mut GameState) {
[INFO] [stderr]     |                   ----^^^^^
[INFO] [stderr]     |                   |
[INFO] [stderr]     |                   help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `best_expectation` is never read
[INFO] [stderr]     --> src/main.rs:1298:13
[INFO] [stderr]      |
[INFO] [stderr] 1298 |             best_expectation = split_exp;
[INFO] [stderr]      |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = help: maybe it is overwritten before being read?
[INFO] [stderr]      = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `will_reshuffle` is never used
[INFO] [stderr]    --> src/main.rs:840:4
[INFO] [stderr]     |
[INFO] [stderr] 840 | fn will_reshuffle(deck: &Deck) -> bool {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `all_deck_expectations` is never used
[INFO] [stderr]     --> src/main.rs:1127:4
[INFO] [stderr]      |
[INFO] [stderr] 1127 | fn all_deck_expectations() -> () {
[INFO] [stderr]      |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `deck_samples` is never used
[INFO] [stderr]     --> src/main.rs:1146:4
[INFO] [stderr]      |
[INFO] [stderr] 1146 | fn deck_samples(filename: &str) -> Result<Vec<Deck>, Box<Error>> {
[INFO] [stderr]      |    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `computed_decks` is never used
[INFO] [stderr]     --> src/main.rs:1170:4
[INFO] [stderr]      |
[INFO] [stderr] 1170 | fn computed_decks(filename: &str) -> Result<HashSet<Deck>, Box<Error>> {
[INFO] [stderr]      |    ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `random_deck` is never used
[INFO] [stderr]     --> src/main.rs:1196:4
[INFO] [stderr]      |
[INFO] [stderr] 1196 | fn random_deck(samples_path: &str, data_path: &str) -> Result<Deck, Box<Error>> {
[INFO] [stderr]      |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `append_advantage_data` is never used
[INFO] [stderr]     --> src/main.rs:1211:4
[INFO] [stderr]      |
[INFO] [stderr] 1211 | fn append_advantage_data(data_path: &str, deck: Deck, advantage: f32) -> Result<(), Box<Error>> {
[INFO] [stderr]      |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `continuously_compute_deck_advantages` is never used
[INFO] [stderr]     --> src/main.rs:1221:4
[INFO] [stderr]      |
[INFO] [stderr] 1221 | fn continuously_compute_deck_advantages(samples_path: &str, data_path: &str) -> () {
[INFO] [stderr]      |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `OrderedDeck` is never constructed
[INFO] [stderr]     --> src/main.rs:1238:8
[INFO] [stderr]      |
[INFO] [stderr] 1238 | struct OrderedDeck {
[INFO] [stderr]      |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `draw` is never used
[INFO] [stderr]     --> src/main.rs:1244:8
[INFO] [stderr]      |
[INFO] [stderr] 1243 | impl OrderedDeck {
[INFO] [stderr]      | ---------------- method in this implementation
[INFO] [stderr] 1244 |     fn draw(&mut self) -> u16 {
[INFO] [stderr]      |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `parse_deck` is never used
[INFO] [stderr]     --> src/main.rs:1251:4
[INFO] [stderr]      |
[INFO] [stderr] 1251 | fn parse_deck(deck_str: &str) -> Deck {
[INFO] [stderr]      |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `parse_hand` is never used
[INFO] [stderr]     --> src/main.rs:1267:4
[INFO] [stderr]      |
[INFO] [stderr] 1267 | fn parse_hand(hand_str: &str) -> Vec<u16> {
[INFO] [stderr]      |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `best_action` is never used
[INFO] [stderr]     --> src/main.rs:1280:4
[INFO] [stderr]      |
[INFO] [stderr] 1280 | fn best_action(mut state: &mut GameState) -> String {
[INFO] [stderr]      |    ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `blackjack_sim` (bin "blackjack_sim" test) generated 24 warnings (run `cargo fix --bin "blackjack_sim" --tests` to apply 10 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/blackjack_sim-e29e94d7c1bb6603)
[INFO] [stdout] 
[INFO] [stdout] running 37 tests
[INFO] [stdout] test five_card_charlie_beats_value ... ok
[INFO] [stdout] test greater_five_card_charlie_wins ... ok
[INFO] [stdout] test five_card_charlie_loses_to_natural ... ok
[INFO] [stdout] test equal_values_are_equal ... ok
[INFO] [stdout] test greater_value_wins ... ok
[INFO] [stdout] test hard_hand_values ... ok
[INFO] [stdout] test natural_beats_five_card_charlie ... ok
[INFO] [stdout] test soft_hand_values ... ok
[INFO] [stdout] test test_dealer_scores ... ok
[INFO] [stdout] test test_card_prob ... ok
[INFO] [stdout] test test_dealer_stands ... ok
[INFO] [stdout] test test_double_expectation ... ok
[INFO] [stdout] test test_hand_expectation ... ok
[INFO] [stdout] test test_replace ... ok
[INFO] [stdout] test test_insurance_expectation ... ok
[INFO] [stdout] test min_hand_values ... ok
[INFO] [stdout] test test_score ... ok
[INFO] [stdout] test test_stand_expectation ... ok
[INFO] [stdout] test test_valid_draw ... ok
[INFO] [stdout] test test_valid_draw_to ... ok
[INFO] [stdout] test test_valid_replace_from ... ok
[INFO] [stdout] test value_beats_bust ... ok
[INFO] [stdout] test two_naturals_equal ... ok
[INFO] [stdout] test test_first_split_hand_insurance_expectation - should panic ... ok
[INFO] [stdout] test test_invalid_draw_to - should panic ... ok
[INFO] [stdout] test test_non_ace_insurance_expectation - should panic ... ok
[INFO] [stdout] test test_non_starting_insurance_expectation - should panic ... ok
[INFO] [stdout] test test_not_same_cards_split_expectation - should panic ... ok
[INFO] [stdout] test test_invalid_hit_expectation - should panic ... ok
[INFO] [stdout] test test_invalid_draw - should panic ... ok
[INFO] [stdout] test test_not_is_split_split_expectation - should panic ... ok
[INFO] [stdout] test test_not_failed_insurance_split_expectation - should panic ... ok
[INFO] [stdout] test test_reshuffle_deck ... FAILED
[INFO] [stdout] test test_not_two_cards_split_expectation - should panic ... ok
[INFO] [stdout] test test_is_split_insurance_expectation - should panic ... ok
[INFO] [stdout] test test_invalid_replace_from - should panic ... ok
[INFO] [stdout] test test_hit_expectation ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test_reshuffle_deck stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test_reshuffle_deck' panicked at src/main.rs:868:5:
[INFO] [stdout] assertion failed: 49 == state.deck.size
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5de4f2789852 - std::backtrace_rs::backtrace::libunwind::trace::hd39b1f53d3cf9745
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5de4f2789852 - std::backtrace_rs::backtrace::trace_unsynchronized::he91d9a75d4e3972b
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5de4f2789852 - std::sys::backtrace::_print_fmt::hca46938f8c6e22cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5de4f2789852 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::ha499add612cccf8e
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5de4f27af0a3 - core::fmt::rt::Argument::fmt::hd21145b75a833b7a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5de4f27af0a3 - core::fmt::write::hb10c956f5235c8a4
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/fmt/mod.rs:1465:25
[INFO] [stdout]    6:     0x5de4f2786a33 - std::io::default_write_fmt::hdb7615052be2ba4d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5de4f2786a33 - std::io::Write::write_fmt::he1bcd251ec6e4153
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5de4f27896a2 - std::sys::backtrace::BacktraceLock::print::hb47c770ef659fd10
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5de4f278adcc - std::panicking::default_hook::{{closure}}::hdda8afb9d457a22c
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:300:27
[INFO] [stdout]   10:     0x5de4f278ac22 - std::panicking::default_hook::h7c46b44874fe5c9a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:324:9
[INFO] [stdout]   11:     0x5de4f2752cf4 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h178a5fcedee41e2f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   12:     0x5de4f2752cf4 - test::test_main_with_exit_callback::{{closure}}::h951a41e0149d6d5d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5de4f278b8ab - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h13602080f5b63276
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   14:     0x5de4f278b8ab - std::panicking::rust_panic_with_hook::ha6cb99ed099eb1c5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:841:13
[INFO] [stdout]   15:     0x5de4f278b546 - std::panicking::begin_panic_handler::{{closure}}::he11808bc797ee921
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:699:13
[INFO] [stdout]   16:     0x5de4f2789d59 - std::sys::backtrace::__rust_end_short_backtrace::h9418807cb7346258
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:168:18
[INFO] [stdout]   17:     0x5de4f278b20d - __rustc[18fb429eef004894]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:697:5
[INFO] [stdout]   18:     0x5de4f27ad570 - core::panicking::panic_fmt::hd890aeb12c3a3fc3
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5de4f27ad5dc - core::panicking::panic::h318cb8731d7e290d
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panicking.rs:145:5
[INFO] [stdout]   20:     0x5de4f2716a7a - blackjack_sim::test_reshuffle_deck::h359c6621244a6482
[INFO] [stdout]   21:     0x5de4f2716a7a - blackjack_sim::test_reshuffle_deck::{{closure}}::h0e3e844b19574b44
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:855:25
[INFO] [stdout]   22:     0x5de4f2716a7a - core::ops::function::FnOnce::call_once::hea5badff4fe1b1f1
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5de4f275847b - core::ops::function::FnOnce::call_once::h2869fb5b0a2b0bdc
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5de4f275847b - test::__rust_begin_short_backtrace::h7dd7142bd62fa711
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:648:18
[INFO] [stdout]   25:     0x5de4f275766e - test::run_test_in_process::{{closure}}::h43a753f038d36b3f
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:74
[INFO] [stdout]   26:     0x5de4f275766e - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0ca95dd3e12d1e16
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   27:     0x5de4f275766e - std::panicking::catch_unwind::do_call::he308587d70ac34ba
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   28:     0x5de4f275766e - std::panicking::catch_unwind::h30dcba31973e8fb0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   29:     0x5de4f275766e - std::panic::catch_unwind::hfb68364e5621fbee
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x5de4f275766e - test::run_test_in_process::hcdcc2977903b998a
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:671:27
[INFO] [stdout]   31:     0x5de4f275766e - test::run_test::{{closure}}::h544a6550958c5d14
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:592:43
[INFO] [stdout]   32:     0x5de4f271b1e4 - test::run_test::{{closure}}::hb172e48ebe2b92c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/test/src/lib.rs:622:41
[INFO] [stdout]   33:     0x5de4f271b1e4 - std::sys::backtrace::__rust_begin_short_backtrace::h7e79d8706638bea0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/backtrace.rs:152:18
[INFO] [stdout]   34:     0x5de4f271ebba - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hc4a275f1e71b8ab0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   35:     0x5de4f271ebba - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h01ed0d242df78cfd
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   36:     0x5de4f271ebba - std::panicking::catch_unwind::do_call::h052f373fb905fee0
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:589:40
[INFO] [stdout]   37:     0x5de4f271ebba - std::panicking::catch_unwind::hb425d20c8ffb09c8
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panicking.rs:552:19
[INFO] [stdout]   38:     0x5de4f271ebba - std::panic::catch_unwind::ha0d5dfbf18fdeda5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x5de4f271ebba - std::thread::Builder::spawn_unchecked_::{{closure}}::hbe79182bd37949c7
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   40:     0x5de4f271ebba - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc096c4a06972fde5
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5de4f278e807 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h47377e27fb938a26
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   42:     0x5de4f278e807 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h72f1fe5d095abf57
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/alloc/src/boxed.rs:1971:9
[INFO] [stdout]   43:     0x5de4f278e807 - std::sys::pal::unix::thread::Thread::new::thread_start::h0a4d8e1b9c0d38cf
[INFO] [stdout]                                at /rustc/d98a5da813da67eb189387b8ccfb73cf481275d8/library/std/src/sys/pal/unix/thread.rs:97:17
[INFO] [stdout]   44:     0x7980b48fdaa4 - <unknown>
[INFO] [stdout]   45:     0x7980b498aa34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test_reshuffle_deck
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 36 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.76s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin blackjack_sim`
[INFO] running `Command { std: "docker" "inspect" "f5965f07db495ee8ab6d0a966ca6e9c1ed45df73c8b0dc69a3bfa0961cb004ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5965f07db495ee8ab6d0a966ca6e9c1ed45df73c8b0dc69a3bfa0961cb004ff", kill_on_drop: false }`
[INFO] [stdout] f5965f07db495ee8ab6d0a966ca6e9c1ed45df73c8b0dc69a3bfa0961cb004ff
