[INFO] cloning repository https://github.com/RustedNature/ml_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/RustedNature/ml_maze_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustedNature%2Fml_maze_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustedNature%2Fml_maze_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25ef5b2aef58c6556e29d14c9a59e6f2938a3709
[INFO] building RustedNature/ml_maze_solver against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRustedNature%2Fml_maze_solver" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RustedNature/ml_maze_solver on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RustedNature/ml_maze_solver
[INFO] finished tweaking git repo https://github.com/RustedNature/ml_maze_solver
[INFO] tweaked toml for git repo https://github.com/RustedNature/ml_maze_solver written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/RustedNature/ml_maze_solver 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2689b33c9a31ac3bbf64d4e1d1fe76061ead89ffa590f5253d18ba56fdd5082a
[INFO] running `Command { std: "docker" "start" "-a" "2689b33c9a31ac3bbf64d4e1d1fe76061ead89ffa590f5253d18ba56fdd5082a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2689b33c9a31ac3bbf64d4e1d1fe76061ead89ffa590f5253d18ba56fdd5082a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2689b33c9a31ac3bbf64d4e1d1fe76061ead89ffa590f5253d18ba56fdd5082a", kill_on_drop: false }`
[INFO] [stdout] 2689b33c9a31ac3bbf64d4e1d1fe76061ead89ffa590f5253d18ba56fdd5082a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2be67f916a11819be466cc7640e0201ad2c25e821f4f259b582bd755fa5b176a
[INFO] running `Command { std: "docker" "start" "-a" "2be67f916a11819be466cc7640e0201ad2c25e821f4f259b582bd755fa5b176a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.147
[INFO] [stderr]    Compiling getrandom v0.2.10
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling maze_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `start_coordinate` is never read
[INFO] [stdout]   --> src/maze.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Maze {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 10 |     fields: [[char; 10]; 10],
[INFO] [stdout] 11 |     start_coordinate: Coordinate,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_start_coordinate` and `print_maze_wit_player_position` are never used
[INFO] [stdout]   --> src/maze.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Maze {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn get_start_coordinate(&self) -> &Coordinate {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn print_maze_wit_player_position(&self, player: &Player) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_movement_string` is never used
[INFO] [stdout]   --> src/player.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl MoveDirection {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 15 |     pub fn get_movement_string(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `display_char` is never read
[INFO] [stdout]   --> src/player.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Player {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 44 |     coordinate: Coordinate,
[INFO] [stdout] 45 |     display_char: char,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Player` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_player_icon` and `choose_next_action` are never used
[INFO] [stdout]   --> src/player.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Player {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn get_player_icon(&self) -> &char {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub fn choose_next_action(&self, maze: &Maze) -> MoveDirection {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `Command { std: "docker" "inspect" "2be67f916a11819be466cc7640e0201ad2c25e821f4f259b582bd755fa5b176a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2be67f916a11819be466cc7640e0201ad2c25e821f4f259b582bd755fa5b176a", kill_on_drop: false }`
[INFO] [stdout] 2be67f916a11819be466cc7640e0201ad2c25e821f4f259b582bd755fa5b176a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a87211b9f74898fcc3f2e7aa765447e219ac1082229e67d7b608cbd846b7533b
[INFO] running `Command { std: "docker" "start" "-a" "a87211b9f74898fcc3f2e7aa765447e219ac1082229e67d7b608cbd846b7533b", kill_on_drop: false }`
[INFO] [stderr]    Compiling maze_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `start_coordinate` is never read
[INFO] [stdout]   --> src/maze.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct Maze {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 10 |     fields: [[char; 10]; 10],
[INFO] [stdout] 11 |     start_coordinate: Coordinate,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_start_coordinate` and `print_maze_wit_player_position` are never used
[INFO] [stdout]   --> src/maze.rs:57:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl Maze {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 57 |     pub fn get_start_coordinate(&self) -> &Coordinate {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 61 |     pub fn print_maze_wit_player_position(&self, player: &Player) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_movement_string` is never used
[INFO] [stdout]   --> src/player.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl MoveDirection {
[INFO] [stdout]    | ------------------ method in this implementation
[INFO] [stdout] 15 |     pub fn get_movement_string(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `display_char` is never read
[INFO] [stdout]   --> src/player.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | pub struct Player {
[INFO] [stdout]    |            ------ field in this struct
[INFO] [stdout] 44 |     coordinate: Coordinate,
[INFO] [stdout] 45 |     display_char: char,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Player` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_player_icon` and `choose_next_action` are never used
[INFO] [stdout]   --> src/player.rs:60:12
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl Player {
[INFO] [stdout]    | ----------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 60 |     pub fn get_player_icon(&self) -> &char {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 64 |     pub fn choose_next_action(&self, maze: &Maze) -> MoveDirection {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] running `Command { std: "docker" "inspect" "a87211b9f74898fcc3f2e7aa765447e219ac1082229e67d7b608cbd846b7533b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a87211b9f74898fcc3f2e7aa765447e219ac1082229e67d7b608cbd846b7533b", kill_on_drop: false }`
[INFO] [stdout] a87211b9f74898fcc3f2e7aa765447e219ac1082229e67d7b608cbd846b7533b