[INFO] fetching crate rustle-game 0.1.0...
[INFO] testing rustle-game-0.1.0 against 1.91.0 for beta-1.92-2
[INFO] extracting crate rustle-game 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate rustle-game 0.1.0
[INFO] finished tweaking crates.io crate rustle-game 0.1.0
[INFO] tweaked toml for crates.io crate rustle-game 0.1.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rustle-game 0.1.0 on toolchain 1.91.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.91.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rustle-game 0.1.0 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" "+1.91.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded os_str_bytes v6.0.0
[INFO] [stderr]   Downloaded clap_derive v3.1.4
[INFO] [stderr]   Downloaded quote v1.0.17
[INFO] [stderr]   Downloaded indexmap v1.8.1
[INFO] [stderr]   Downloaded clap v3.1.6
[INFO] [stderr]   Downloaded syn v1.0.90
[INFO] [stderr]   Downloaded libc v0.2.117
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3c258b515a2488177fbcd6d8878b43e7ca0911db51cb081924d6becbd54198d6
[INFO] running `Command { std: "docker" "start" "-a" "3c258b515a2488177fbcd6d8878b43e7ca0911db51cb081924d6becbd54198d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3c258b515a2488177fbcd6d8878b43e7ca0911db51cb081924d6becbd54198d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c258b515a2488177fbcd6d8878b43e7ca0911db51cb081924d6becbd54198d6", kill_on_drop: false }`
[INFO] [stdout] 3c258b515a2488177fbcd6d8878b43e7ca0911db51cb081924d6becbd54198d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08cedcdb29ce1a4f476135986a4d8eda28673750907003d221c4dbfc9d4ceb96
[INFO] running `Command { std: "docker" "start" "-a" "08cedcdb29ce1a4f476135986a4d8eda28673750907003d221c4dbfc9d4ceb96", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling libc v0.2.117
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.90
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.16
[INFO] [stderr]    Compiling textwrap v0.15.0
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling termcolor v1.1.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.8.1
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling quote v1.0.17
[INFO] [stderr]    Compiling getrandom v0.2.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling clap_derive v3.1.4
[INFO] [stderr]    Compiling clap v3.1.6
[INFO] [stderr]    Compiling rustle-game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/wordle.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{BufRead, BufReader};
[INFO] [stdout]   |                        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/wordle.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/wordle.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{BufRead, BufReader};
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Bounds` is more private than the item `Operation::get_restricted_bounds`
[INFO] [stdout]    --> src/nerdle.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn get_restricted_bounds(answer_bounds: &Bounds, rest_bounds: &Bounds) -> Bounds;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `Operation::get_restricted_bounds` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `Bounds` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/nerdle.rs:15:1
[INFO] [stdout]     |
[INFO] [stdout]  15 | struct Bounds {
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `print` and `union` are never used
[INFO] [stdout]   --> src/nerdle.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Bounds {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57 |     fn union(&self, b: &Bounds) -> Bounds {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Divide` is never constructed
[INFO] [stdout]   --> src/nerdle.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 93 | enum Op {
[INFO] [stdout]    |      -- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 97 |     Divide
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Op` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Operation` is never used
[INFO] [stdout]    --> src/nerdle.rs:100:11
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub trait Operation {
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_borrowed` is never used
[INFO] [stdout]    --> src/nerdle.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 140 | impl Expression {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] 141 |
[INFO] [stdout] 142 |     fn to_borrowed(&self) -> Expression {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.45s
[INFO] running `Command { std: "docker" "inspect" "08cedcdb29ce1a4f476135986a4d8eda28673750907003d221c4dbfc9d4ceb96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08cedcdb29ce1a4f476135986a4d8eda28673750907003d221c4dbfc9d4ceb96", kill_on_drop: false }`
[INFO] [stdout] 08cedcdb29ce1a4f476135986a4d8eda28673750907003d221c4dbfc9d4ceb96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0499f5c7d6a2aaf8c777981df1f695a26216a483cad970d0afe77e1112d759f2
[INFO] running `Command { std: "docker" "start" "-a" "0499f5c7d6a2aaf8c777981df1f695a26216a483cad970d0afe77e1112d759f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustle-game v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BufReader`
[INFO] [stdout]  --> src/wordle.rs:1:24
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{BufRead, BufReader};
[INFO] [stdout]   |                        ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/wordle.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BufRead`
[INFO] [stdout]  --> src/wordle.rs:1:15
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{BufRead, BufReader};
[INFO] [stdout]   |               ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `nerdle::Bounds` is more private than the item `Operation::get_restricted_bounds`
[INFO] [stdout]    --> src/nerdle.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn get_restricted_bounds(answer_bounds: &Bounds, rest_bounds: &Bounds) -> Bounds;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `Operation::get_restricted_bounds` is reachable at visibility `pub(crate)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `nerdle::Bounds` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/nerdle.rs:15:1
[INFO] [stdout]     |
[INFO] [stdout]  15 | struct Bounds {
[INFO] [stdout]     | ^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/nerdle.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | impl Bounds {
[INFO] [stdout]    | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Divide` is never constructed
[INFO] [stdout]   --> src/nerdle.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 93 | enum Op {
[INFO] [stdout]    |      -- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 97 |     Divide
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Op` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Operation` is never used
[INFO] [stdout]    --> src/nerdle.rs:100:11
[INFO] [stdout]     |
[INFO] [stdout] 100 | pub trait Operation {
[INFO] [stdout]     |           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_borrowed` is never used
[INFO] [stdout]    --> src/nerdle.rs:142:8
[INFO] [stdout]     |
[INFO] [stdout] 140 | impl Expression {
[INFO] [stdout]     | --------------- method in this implementation
[INFO] [stdout] 141 |
[INFO] [stdout] 142 |     fn to_borrowed(&self) -> Expression {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "0499f5c7d6a2aaf8c777981df1f695a26216a483cad970d0afe77e1112d759f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0499f5c7d6a2aaf8c777981df1f695a26216a483cad970d0afe77e1112d759f2", kill_on_drop: false }`
[INFO] [stdout] 0499f5c7d6a2aaf8c777981df1f695a26216a483cad970d0afe77e1112d759f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+1.91.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 54f1c0fff4a5230dd8bfb7fa017a3033b5647e8837226edf2c98ef0b42ff5503
[INFO] running `Command { std: "docker" "start" "-a" "54f1c0fff4a5230dd8bfb7fa017a3033b5647e8837226edf2c98ef0b42ff5503", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `BufReader`
[INFO] [stderr]  --> src/wordle.rs:1:24
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{BufRead, BufReader};
[INFO] [stdout] 
[INFO] [stderr]   |                        ^^^^^^^^^
[INFO] [stdout] running 3 tests
[INFO] [stderr]   |
[INFO] [stdout] test nerdle::tests::bounds_intersect ... ok
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] test nerdle::tests::nod_bounds ... ok
[INFO] [stderr] 
[INFO] [stdout] test nerdle::tests::bounds_union ... ok
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stdout] 
[INFO] [stderr]  --> src/wordle.rs:2:5
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr] 2 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BufRead`
[INFO] [stderr]  --> src/wordle.rs:1:15
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{BufRead, BufReader};
[INFO] [stderr]   |               ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `nerdle::Bounds` is more private than the item `Operation::get_restricted_bounds`
[INFO] [stderr]    --> src/nerdle.rs:101:5
[INFO] [stderr]     |
[INFO] [stderr] 101 |     fn get_restricted_bounds(answer_bounds: &Bounds, rest_bounds: &Bounds) -> Bounds;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `Operation::get_restricted_bounds` is reachable at visibility `pub(crate)`
[INFO] [stderr]     |
[INFO] [stderr] note: but type `nerdle::Bounds` is only usable at visibility `pub(self)`
[INFO] [stderr]    --> src/nerdle.rs:15:1
[INFO] [stderr]     |
[INFO] [stderr]  15 | struct Bounds {
[INFO] [stderr]     | ^^^^^^^^^^^^^
[INFO] [stderr]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method `print` is never used
[INFO] [stderr]   --> src/nerdle.rs:36:8
[INFO] [stderr]    |
[INFO] [stderr] 20 | impl Bounds {
[INFO] [stderr]    | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 36 |     fn print(&self) {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `Divide` is never constructed
[INFO] [stderr]   --> src/nerdle.rs:97:5
[INFO] [stderr]    |
[INFO] [stderr] 93 | enum Op {
[INFO] [stderr]    |      -- variant in this enum
[INFO] [stderr] ...
[INFO] [stderr] 97 |     Divide
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `Op` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Operation` is never used
[INFO] [stderr]    --> src/nerdle.rs:100:11
[INFO] [stderr]     |
[INFO] [stderr] 100 | pub trait Operation {
[INFO] [stderr]     |           ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `to_borrowed` is never used
[INFO] [stderr]    --> src/nerdle.rs:142:8
[INFO] [stderr]     |
[INFO] [stderr] 140 | impl Expression {
[INFO] [stderr]     | --------------- method in this implementation
[INFO] [stderr] 141 |
[INFO] [stderr] 142 |     fn to_borrowed(&self) -> Expression {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rustle-game` (bin "rustle-game" test) generated 8 warnings (run `cargo fix --bin "rustle-game" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rustle_game-906866658d98bda3)
[INFO] running `Command { std: "docker" "inspect" "54f1c0fff4a5230dd8bfb7fa017a3033b5647e8837226edf2c98ef0b42ff5503", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54f1c0fff4a5230dd8bfb7fa017a3033b5647e8837226edf2c98ef0b42ff5503", kill_on_drop: false }`
[INFO] [stdout] 54f1c0fff4a5230dd8bfb7fa017a3033b5647e8837226edf2c98ef0b42ff5503