[INFO] updating cached repository https://github.com/procedural-rust/Maze_generator
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4947e59d387b9afb73c410e196195b7ef34b7ae6
[INFO] checking procedural-rust/Maze_generator against try#a243773eaf3fedcd203f10ae4579e4f106bf7ccd for pr-68325
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fprocedural-rust%2FMaze_generator" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/procedural-rust/Maze_generator on toolchain a243773eaf3fedcd203f10ae4579e4f106bf7ccd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/procedural-rust/Maze_generator
[INFO] finished tweaking git repo https://github.com/procedural-rust/Maze_generator
[INFO] tweaked toml for git repo https://github.com/procedural-rust/Maze_generator written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/procedural-rust/Maze_generator already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 042d38f37d549abc00dab8a2910c65cefd22e0477cb5eebb755a2e76406b3bc1
[INFO] running `"docker" "start" "-a" "042d38f37d549abc00dab8a2910c65cefd22e0477cb5eebb755a2e76406b3bc1"`
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.16
[INFO] [stderr]     Checking clap v2.27.1
[INFO] [stderr]     Checking image v0.22.3
[INFO] [stderr]     Checking maze_generation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/maze.rs:30:32
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cave.rs:32:32
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/maze.rs:30:32
[INFO] [stderr]    |
[INFO] [stderr] 30 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/cave.rs:32:32
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn cause(&self) -> Option<&Error> {
[INFO] [stderr]    |                                ^^^^^ help: use `dyn`: `dyn Error`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `turn_clockwise`
[INFO] [stderr]   --> src/maze.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn turn_clockwise(self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `turn_counterclockwise`
[INFO] [stderr]   --> src/maze.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn turn_counterclockwise(self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `init_rect_with_bitmask`
[INFO] [stderr]    --> src/maze.rs:183:5
[INFO] [stderr]     |
[INFO] [stderr] 183 |     pub fn init_rect_with_bitmask(my_rows: usize, my_columns: usize, wrap: usize, bitmask: Vec<Vec<bool>>, method: GenerationType) -> Result<Maze,MazeError> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `turn_clockwise`
[INFO] [stderr]   --> src/maze.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn turn_clockwise(self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_starting_points`
[INFO] [stderr]    --> src/maze.rs:213:4
[INFO] [stderr]     |
[INFO] [stderr] 213 | fn get_starting_points(my_rows: usize, my_columns: usize, wrap: usize, bitmask: Vec<Vec<bool>>) -> Vec<Point>{
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `turn_counterclockwise`
[INFO] [stderr]   --> src/maze.rs:85:5
[INFO] [stderr]    |
[INFO] [stderr] 85 |     pub fn turn_counterclockwise(self) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `init_rect_with_bitmask`
[INFO] [stderr]    --> src/maze.rs:183:5
[INFO] [stderr]     |
[INFO] [stderr] 183 |     pub fn init_rect_with_bitmask(my_rows: usize, my_columns: usize, wrap: usize, bitmask: Vec<Vec<bool>>, method: GenerationType) -> Result<Maze,MazeError> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `get_starting_points`
[INFO] [stderr]    --> src/maze.rs:213:4
[INFO] [stderr]     |
[INFO] [stderr] 213 | fn get_starting_points(my_rows: usize, my_columns: usize, wrap: usize, bitmask: Vec<Vec<bool>>) -> Vec<Point>{
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.73s
[INFO] running `"docker" "inspect" "042d38f37d549abc00dab8a2910c65cefd22e0477cb5eebb755a2e76406b3bc1"`
[INFO] running `"docker" "rm" "-f" "042d38f37d549abc00dab8a2910c65cefd22e0477cb5eebb755a2e76406b3bc1"`
[INFO] [stdout] 042d38f37d549abc00dab8a2910c65cefd22e0477cb5eebb755a2e76406b3bc1