[INFO] fetching crate roggle 0.7.2...
[INFO] testing roggle-0.7.2 against master#0d162b25edd5bf0dba9a22e83b614f1113e90474 for pr-150681
[INFO] extracting crate roggle 0.7.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate roggle 0.7.2
[INFO] finished tweaking crates.io crate roggle 0.7.2
[INFO] tweaked toml for crates.io crate roggle 0.7.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate roggle 0.7.2 on toolchain 0d162b25edd5bf0dba9a22e83b614f1113e90474
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate roggle 0.7.2 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" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aac3712acdb878a7e0a5eb044fe913b18e496ee07f10af541f3e9b2c93230bdf
[INFO] running `Command { std: "docker" "start" "-a" "aac3712acdb878a7e0a5eb044fe913b18e496ee07f10af541f3e9b2c93230bdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aac3712acdb878a7e0a5eb044fe913b18e496ee07f10af541f3e9b2c93230bdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aac3712acdb878a7e0a5eb044fe913b18e496ee07f10af541f3e9b2c93230bdf", kill_on_drop: false }`
[INFO] [stdout] aac3712acdb878a7e0a5eb044fe913b18e496ee07f10af541f3e9b2c93230bdf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9bdff8af4628200ddfbfab544b6532670f6faf2c2e2db3a34e0a14a59e0ac22
[INFO] running `Command { std: "docker" "start" "-a" "d9bdff8af4628200ddfbfab544b6532670f6faf2c2e2db3a34e0a14a59e0ac22", kill_on_drop: false }`
[INFO] [stderr]    Compiling roggle v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/board.rs:104:35
[INFO] [stdout]     |
[INFO] [stdout] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout]     |                                   ^              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout] 104 +     self.values[(pos.1 as usize)][pos.0 as usize ]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/board.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout]     |                 ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout] 104 +     self.values[pos.1 as usize ][(pos.0 as usize)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lines_from_file` is never used
[INFO] [stdout]   --> src/lib.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn lines_from_file(filename: impl AsRef<Path>) -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/trie.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct TrieNode {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 5 |   value: Option<char>,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TrieNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `check_value` is never used
[INFO] [stdout]   --> src/trie.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl TrieNode {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |   pub fn check_value(self, c: char) -> bool {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.12s
[INFO] running `Command { std: "docker" "inspect" "d9bdff8af4628200ddfbfab544b6532670f6faf2c2e2db3a34e0a14a59e0ac22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9bdff8af4628200ddfbfab544b6532670f6faf2c2e2db3a34e0a14a59e0ac22", kill_on_drop: false }`
[INFO] [stdout] d9bdff8af4628200ddfbfab544b6532670f6faf2c2e2db3a34e0a14a59e0ac22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 423860f4019f14e25ecc8bcb5da1a4a2cc5611d0ac9284ceefa5b396678f08c7
[INFO] running `Command { std: "docker" "start" "-a" "423860f4019f14e25ecc8bcb5da1a4a2cc5611d0ac9284ceefa5b396678f08c7", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/board.rs:104:35
[INFO] [stdout]     |
[INFO] [stdout] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout]     |                                   ^              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout] 104 +     self.values[(pos.1 as usize)][pos.0 as usize ]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/board.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout]     |                 ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout] 104 +     self.values[pos.1 as usize ][(pos.0 as usize)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lines_from_file` is never used
[INFO] [stdout]   --> src/lib.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn lines_from_file(filename: impl AsRef<Path>) -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/trie.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct TrieNode {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 5 |   value: Option<char>,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TrieNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `check_value` is never used
[INFO] [stdout]   --> src/trie.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl TrieNode {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |   pub fn check_value(self, c: char) -> bool {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling roggle v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/board.rs:104:35
[INFO] [stdout]     |
[INFO] [stdout] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout]     |                                   ^              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout] 104 +     self.values[(pos.1 as usize)][pos.0 as usize ]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/board.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout]     |                 ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stdout] 104 +     self.values[pos.1 as usize ][(pos.0 as usize)]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `lines_from_file` is never used
[INFO] [stdout]   --> src/lib.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn lines_from_file(filename: impl AsRef<Path>) -> Vec<String> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `value` is never read
[INFO] [stdout]  --> src/trie.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct TrieNode {
[INFO] [stdout]   |            -------- field in this struct
[INFO] [stdout] 5 |   value: Option<char>,
[INFO] [stdout]   |   ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `TrieNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `check_value` is never used
[INFO] [stdout]   --> src/trie.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl TrieNode {
[INFO] [stdout]    | ------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |   pub fn check_value(self, c: char) -> bool {
[INFO] [stdout]    |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "423860f4019f14e25ecc8bcb5da1a4a2cc5611d0ac9284ceefa5b396678f08c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "423860f4019f14e25ecc8bcb5da1a4a2cc5611d0ac9284ceefa5b396678f08c7", kill_on_drop: false }`
[INFO] [stdout] 423860f4019f14e25ecc8bcb5da1a4a2cc5611d0ac9284ceefa5b396678f08c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c9040a5fa2efacc2839f4fbd365091eb48fbb7ee1b0e1d013f8f8e24e419575c
[INFO] running `Command { std: "docker" "start" "-a" "c9040a5fa2efacc2839f4fbd365091eb48fbb7ee1b0e1d013f8f8e24e419575c", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around index expression
[INFO] [stderr]    --> src/board.rs:104:35
[INFO] [stderr]     |
[INFO] [stderr] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stderr]     |                                   ^              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stderr] 104 +     self.values[(pos.1 as usize)][pos.0 as usize ]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around index expression
[INFO] [stderr]    --> src/board.rs:104:17
[INFO] [stderr]     |
[INFO] [stderr] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stderr]     |                 ^              ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stderr] 104 +     self.values[pos.1 as usize ][(pos.0 as usize)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: function `lines_from_file` is never used
[INFO] [stderr]   --> src/lib.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn lines_from_file(filename: impl AsRef<Path>) -> Vec<String> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `value` is never read
[INFO] [stderr]  --> src/trie.rs:5:3
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct TrieNode {
[INFO] [stderr]   |            -------- field in this struct
[INFO] [stderr] 5 |   value: Option<char>,
[INFO] [stderr]   |   ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `TrieNode` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: method `check_value` is never used
[INFO] [stderr]   --> src/trie.rs:27:10
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl TrieNode {
[INFO] [stderr]    | ------------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 27 |   pub fn check_value(self, c: char) -> bool {
[INFO] [stderr]    |          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `roggle` (lib) generated 5 warnings (run `cargo fix --lib -p roggle` to apply 2 suggestions)
[INFO] [stderr] warning: `roggle` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/roggle-39086a43ef665ea9)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/roggle-e9e5ecf60bcbb32b)
[INFO] [stderr]    Doc-tests roggle
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around index expression
[INFO] [stderr]    --> src/board.rs:104:35
[INFO] [stderr]     |
[INFO] [stderr] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stderr]     |                                   ^              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stderr] 104 +     self.values[(pos.1 as usize)][pos.0 as usize ]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around index expression
[INFO] [stderr]    --> src/board.rs:104:17
[INFO] [stderr]     |
[INFO] [stderr] 104 |     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stderr]     |                 ^              ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 104 -     self.values[(pos.1 as usize)][(pos.0 as usize)]
[INFO] [stderr] 104 +     self.values[pos.1 as usize ][(pos.0 as usize)]
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - solve (line 76) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - solve (line 76) stdout ----
[INFO] [stdout] error[E0254]: the name `roggle` is defined multiple times
[INFO] [stdout]   --> src/lib.rs:78:5
[INFO] [stdout]    |
[INFO] [stdout] 77 | extern crate r#roggle;
[INFO] [stdout]    | ---------------------- previous import of the extern crate `roggle` here
[INFO] [stdout] 78 | use roggle;
[INFO] [stdout]    |     ^^^^^^ `roggle` reimported here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `roggle` must be defined only once in the type namespace of this module
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `HashSet<String>` doesn't implement `std::fmt::Display`
[INFO] [stdout]   --> src/lib.rs:81:18
[INFO] [stdout]    |
[INFO] [stdout] 81 |   println!("{}", roggle::solve("abef pslo aidp eijf"));
[INFO] [stdout]    |             --   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `HashSet<String>` cannot be formatted with the default formatter
[INFO] [stdout]    |             |
[INFO] [stdout]    |             required by this formatting parameter
[INFO] [stdout]    |
[INFO] [stdout]    = help: the trait `std::fmt::Display` is not implemented for `HashSet<String>`
[INFO] [stdout]    = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
[INFO] [stdout]    = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0254, E0277.
[INFO] [stdout] For more information about an error, try `rustc --explain E0254`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - solve (line 76)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "c9040a5fa2efacc2839f4fbd365091eb48fbb7ee1b0e1d013f8f8e24e419575c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9040a5fa2efacc2839f4fbd365091eb48fbb7ee1b0e1d013f8f8e24e419575c", kill_on_drop: false }`
[INFO] [stdout] c9040a5fa2efacc2839f4fbd365091eb48fbb7ee1b0e1d013f8f8e24e419575c
