[INFO] cloning repository https://github.com/geer26/rust_maze_solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/geer26/rust_maze_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeer26%2Frust_maze_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeer26%2Frust_maze_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 208fe3fc2a0779ab6cb82525903186861113c20e
[INFO] testing geer26/rust_maze_solver against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgeer26%2Frust_maze_solver" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/geer26/rust_maze_solver on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/geer26/rust_maze_solver
[INFO] finished tweaking git repo https://github.com/geer26/rust_maze_solver
[INFO] tweaked toml for git repo https://github.com/geer26/rust_maze_solver written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/geer26/rust_maze_solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e9eaa26a99dd6600449bf4040be32e87cc3887a1baac2021d215c9bd3f97550
[INFO] running `Command { std: "docker" "start" "-a" "0e9eaa26a99dd6600449bf4040be32e87cc3887a1baac2021d215c9bd3f97550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e9eaa26a99dd6600449bf4040be32e87cc3887a1baac2021d215c9bd3f97550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e9eaa26a99dd6600449bf4040be32e87cc3887a1baac2021d215c9bd3f97550", kill_on_drop: false }`
[INFO] [stdout] 0e9eaa26a99dd6600449bf4040be32e87cc3887a1baac2021d215c9bd3f97550
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e1a647927c4e19919ec91e84fbd347bb58470ffd0370daed520dc5ffc35269ce
[INFO] running `Command { std: "docker" "start" "-a" "e1a647927c4e19919ec91e84fbd347bb58470ffd0370daed520dc5ffc35269ce", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling maze_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `uuid::Uuid`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use uuid::Uuid;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Wall` is named the same as one of the variants of the type `Type`
[INFO] [stdout]   --> src/main.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Wall => "WALL",
[INFO] [stdout]    |             ^^^^ help: to match on the variant, qualify the path: `Type::Wall`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bindings_with_variant_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Floor` is named the same as one of the variants of the type `Type`
[INFO] [stdout]   --> src/main.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Floor => "FLOOR",
[INFO] [stdout]    |             ^^^^^ help: to match on the variant, qualify the path: `Type::Floor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Undefined` is named the same as one of the variants of the type `Type`
[INFO] [stdout]   --> src/main.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             Undefined => "UNDEFINED",
[INFO] [stdout]    |             ^^^^^^^^^ help: to match on the variant, qualify the path: `Type::Undefined`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Wall => "WALL",
[INFO] [stdout]    |             ---- matches any value
[INFO] [stdout] 83 |             Floor => "FLOOR",
[INFO] [stdout]    |             ^^^^^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Wall => "WALL",
[INFO] [stdout]    |             ---- matches any value
[INFO] [stdout] 83 |             Floor => "FLOOR",
[INFO] [stdout] 84 |             Undefined => "UNDEFINED",
[INFO] [stdout]    |             ^^^^^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Wall`
[INFO] [stdout]   --> src/main.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Wall => "WALL",
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_Wall`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Floor`
[INFO] [stdout]   --> src/main.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Floor => "FLOOR",
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_Floor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Undefined`
[INFO] [stdout]   --> src/main.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             Undefined => "UNDEFINED",
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Undefined`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Visited`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Visited,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Node`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Node,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Entrance`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Entrance,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Parent`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Parent(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     parent: Parent,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Maze`
[INFO] [stdout]   --> src/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Maze{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_file`
[INFO] [stdout]   --> src/main.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn read_file(&self){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |             &points.push(p);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 76 |             let _ = &points.push(p);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Wall` should have a snake case name
[INFO] [stdout]   --> src/main.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Wall => "WALL",
[INFO] [stdout]    |             ^^^^ help: convert the identifier to snake case (notice the capitalization): `wall`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Floor` should have a snake case name
[INFO] [stdout]   --> src/main.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Floor => "FLOOR",
[INFO] [stdout]    |             ^^^^^ help: convert the identifier to snake case (notice the capitalization): `floor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Undefined` should have a snake case name
[INFO] [stdout]   --> src/main.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             Undefined => "UNDEFINED",
[INFO] [stdout]    |             ^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `undefined`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0170`.
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.21s
[INFO] running `Command { std: "docker" "inspect" "e1a647927c4e19919ec91e84fbd347bb58470ffd0370daed520dc5ffc35269ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e1a647927c4e19919ec91e84fbd347bb58470ffd0370daed520dc5ffc35269ce", kill_on_drop: false }`
[INFO] [stdout] e1a647927c4e19919ec91e84fbd347bb58470ffd0370daed520dc5ffc35269ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5f855bb7fdc491bee0cbff3db24e8fb1678ce5ec26f2d5c1ad5edf70e6d8f2a5
[INFO] running `Command { std: "docker" "start" "-a" "5f855bb7fdc491bee0cbff3db24e8fb1678ce5ec26f2d5c1ad5edf70e6d8f2a5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling maze_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `uuid::Uuid`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use uuid::Uuid;
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Wall` is named the same as one of the variants of the type `Type`
[INFO] [stdout]   --> src/main.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Wall => "WALL",
[INFO] [stdout]    |             ^^^^ help: to match on the variant, qualify the path: `Type::Wall`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bindings_with_variant_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Floor` is named the same as one of the variants of the type `Type`
[INFO] [stdout]   --> src/main.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Floor => "FLOOR",
[INFO] [stdout]    |             ^^^^^ help: to match on the variant, qualify the path: `Type::Floor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning[E0170]: pattern binding `Undefined` is named the same as one of the variants of the type `Type`
[INFO] [stdout]   --> src/main.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             Undefined => "UNDEFINED",
[INFO] [stdout]    |             ^^^^^^^^^ help: to match on the variant, qualify the path: `Type::Undefined`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Wall => "WALL",
[INFO] [stdout]    |             ---- matches any value
[INFO] [stdout] 83 |             Floor => "FLOOR",
[INFO] [stdout]    |             ^^^^^ unreachable pattern
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]   --> src/main.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Wall => "WALL",
[INFO] [stdout]    |             ---- matches any value
[INFO] [stdout] 83 |             Floor => "FLOOR",
[INFO] [stdout] 84 |             Undefined => "UNDEFINED",
[INFO] [stdout]    |             ^^^^^^^^^ unreachable pattern
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Wall`
[INFO] [stdout]   --> src/main.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Wall => "WALL",
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_Wall`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Floor`
[INFO] [stdout]   --> src/main.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Floor => "FLOOR",
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_Floor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `Undefined`
[INFO] [stdout]   --> src/main.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             Undefined => "UNDEFINED",
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Undefined`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Visited`
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Visited,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Node`
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Node,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Entrance`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Entrance,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Parent`
[INFO] [stdout]   --> src/main.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Parent(String),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parent`
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     parent: Parent,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Maze`
[INFO] [stdout]   --> src/main.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | struct Maze{
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read_file`
[INFO] [stdout]   --> src/main.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn read_file(&self){
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/main.rs:76:13
[INFO] [stdout]    |
[INFO] [stdout] 76 |             &points.push(p);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 76 |             let _ = &points.push(p);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Wall` should have a snake case name
[INFO] [stdout]   --> src/main.rs:82:13
[INFO] [stdout]    |
[INFO] [stdout] 82 |             Wall => "WALL",
[INFO] [stdout]    |             ^^^^ help: convert the identifier to snake case (notice the capitalization): `wall`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Floor` should have a snake case name
[INFO] [stdout]   --> src/main.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 83 |             Floor => "FLOOR",
[INFO] [stdout]    |             ^^^^^ help: convert the identifier to snake case (notice the capitalization): `floor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `Undefined` should have a snake case name
[INFO] [stdout]   --> src/main.rs:84:13
[INFO] [stdout]    |
[INFO] [stdout] 84 |             Undefined => "UNDEFINED",
[INFO] [stdout]    |             ^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `undefined`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0170`.
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.02s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/maze_solver-ceb732cbafa2b527)
[INFO] running `Command { std: "docker" "inspect" "5f855bb7fdc491bee0cbff3db24e8fb1678ce5ec26f2d5c1ad5edf70e6d8f2a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f855bb7fdc491bee0cbff3db24e8fb1678ce5ec26f2d5c1ad5edf70e6d8f2a5", kill_on_drop: false }`
[INFO] [stdout] 5f855bb7fdc491bee0cbff3db24e8fb1678ce5ec26f2d5c1ad5edf70e6d8f2a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d351507ab8a0d9a5238a9245c2ec6635f04c3ed87da2a56467f11ccc61c2c03a
[INFO] running `Command { std: "docker" "start" "-a" "d351507ab8a0d9a5238a9245c2ec6635f04c3ed87da2a56467f11ccc61c2c03a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `uuid::Uuid`
[INFO] [stdout] 
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stdout] running 0 tests
[INFO] [stderr]   |
[INFO] [stdout] 
[INFO] [stderr] 4 | use uuid::Uuid;
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning[E0170]: pattern binding `Wall` is named the same as one of the variants of the type `Type`
[INFO] [stderr]   --> src/main.rs:82:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |             Wall => "WALL",
[INFO] [stderr]    |             ^^^^ help: to match on the variant, qualify the path: `Type::Wall`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bindings_with_variant_name)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning[E0170]: pattern binding `Floor` is named the same as one of the variants of the type `Type`
[INFO] [stderr]   --> src/main.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 |             Floor => "FLOOR",
[INFO] [stderr]    |             ^^^^^ help: to match on the variant, qualify the path: `Type::Floor`
[INFO] [stderr] 
[INFO] [stderr] warning[E0170]: pattern binding `Undefined` is named the same as one of the variants of the type `Type`
[INFO] [stderr]   --> src/main.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |             Undefined => "UNDEFINED",
[INFO] [stderr]    |             ^^^^^^^^^ help: to match on the variant, qualify the path: `Type::Undefined`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/main.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |             Wall => "WALL",
[INFO] [stderr]    |             ---- matches any value
[INFO] [stderr] 83 |             Floor => "FLOOR",
[INFO] [stderr]    |             ^^^^^ unreachable pattern
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]   --> src/main.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |             Wall => "WALL",
[INFO] [stderr]    |             ---- matches any value
[INFO] [stderr] 83 |             Floor => "FLOOR",
[INFO] [stderr] 84 |             Undefined => "UNDEFINED",
[INFO] [stderr]    |             ^^^^^^^^^ unreachable pattern
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `Wall`
[INFO] [stderr]   --> src/main.rs:82:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |             Wall => "WALL",
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_Wall`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `Floor`
[INFO] [stderr]   --> src/main.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 |             Floor => "FLOOR",
[INFO] [stderr]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_Floor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `Undefined`
[INFO] [stderr]   --> src/main.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |             Undefined => "UNDEFINED",
[INFO] [stderr]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_Undefined`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Visited`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Visited,
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Node`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Node,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Entrance`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Entrance,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Parent`
[INFO] [stderr]   --> src/main.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 |     Parent(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `parent`
[INFO] [stderr]   --> src/main.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     parent: Parent,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Maze`
[INFO] [stderr]   --> src/main.rs:33:8
[INFO] [stderr]    |
[INFO] [stderr] 33 | struct Maze{
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `read_file`
[INFO] [stderr]   --> src/main.rs:38:12
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn read_file(&self){
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/main.rs:76:13
[INFO] [stderr]    |
[INFO] [stderr] 76 |             &points.push(p);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 76 |             let _ = &points.push(p);
[INFO] [stderr]    |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Wall` should have a snake case name
[INFO] [stderr]   --> src/main.rs:82:13
[INFO] [stderr]    |
[INFO] [stderr] 82 |             Wall => "WALL",
[INFO] [stderr]    |             ^^^^ help: convert the identifier to snake case (notice the capitalization): `wall`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Floor` should have a snake case name
[INFO] [stderr]   --> src/main.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 83 |             Floor => "FLOOR",
[INFO] [stderr]    |             ^^^^^ help: convert the identifier to snake case (notice the capitalization): `floor`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Undefined` should have a snake case name
[INFO] [stderr]   --> src/main.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |             Undefined => "UNDEFINED",
[INFO] [stderr]    |             ^^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `undefined`
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0170`.
[INFO] [stderr] warning: `maze_solver` (bin "maze_solver" test) generated 20 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 29.26s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/maze_solver-ceb732cbafa2b527)
[INFO] running `Command { std: "docker" "inspect" "d351507ab8a0d9a5238a9245c2ec6635f04c3ed87da2a56467f11ccc61c2c03a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d351507ab8a0d9a5238a9245c2ec6635f04c3ed87da2a56467f11ccc61c2c03a", kill_on_drop: false }`
[INFO] [stdout] d351507ab8a0d9a5238a9245c2ec6635f04c3ed87da2a56467f11ccc61c2c03a