[INFO] updating cached repository https://github.com/gluyas/niwa-rs
[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] bed97251b7a0b4b40881cc8e92755c9c225fd876
[INFO] checking gluyas/niwa-rs against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgluyas%2Fniwa-rs" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gluyas/niwa-rs on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/gluyas/niwa-rs
[INFO] finished tweaking git repo https://github.com/gluyas/niwa-rs
[INFO] tweaked toml for git repo https://github.com/gluyas/niwa-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/gluyas/niwa-rs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] e3f3965be48bf5e604f7006dd1a71e4f5f51339925f799d1ce86b8ba8d2a867e
[INFO] running `"docker" "start" "-a" "e3f3965be48bf5e604f7006dd1a71e4f5f51339925f799d1ce86b8ba8d2a867e"`
[INFO] [stderr]     Checking niwa-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/util.rs:70:18
[INFO] [stderr]    |
[INFO] [stderr] 70 |         *self += (-rhs.into());
[INFO] [stderr]    |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:55:36
[INFO] [stderr]    |
[INFO] [stderr] 55 |                 println!("{}", err.description());
[INFO] [stderr]    |                                    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `nudge`
[INFO] [stderr]   --> src/util.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn nudge(self, dir: Direction) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `snap_to_edge`
[INFO] [stderr]    --> src/util.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     pub fn snap_to_edge <P: Into<GridIndex>> (mut self, dir: Direction, bounds: P) -> GridIndex {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter_rect`
[INFO] [stderr]    --> src/util.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |     pub fn iter_rect(self, dir_primary: Direction, dir_secondary: Direction) -> RectIterator {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_within`
[INFO] [stderr]    --> src/util.rs:161:5
[INFO] [stderr]     |
[INFO] [stderr] 161 |     pub fn is_within <P: Into<GridIndex>> (self, bound: P) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `component_add`
[INFO] [stderr]    --> src/util.rs:165:5
[INFO] [stderr]     |
[INFO] [stderr] 165 |     pub fn component_add <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `component_diff`
[INFO] [stderr]    --> src/util.rs:170:5
[INFO] [stderr]     |
[INFO] [stderr] 170 |     pub fn component_diff <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/util.rs:261:5
[INFO] [stderr]     |
[INFO] [stderr] 261 |     pub fn new <P: Into<GridIndex>> (range: P, dir_primary: Direction, dir_secondary: Direction) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `of`
[INFO] [stderr]    --> src/util.rs:323:5
[INFO] [stderr]     |
[INFO] [stderr] 323 |     pub fn of <P: Into<GridIndex>> (size: P, val: T) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sand`
[INFO] [stderr]   --> src/world.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     Sand,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Stone`
[INFO] [stderr]   --> src/world.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Stone,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Water`
[INFO] [stderr]   --> src/world.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Water,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_blocked`
[INFO] [stderr]   --> src/puzzle.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn is_blocked <P: Into<GridIndex>> (&self, pos: P, dir: Direction) -> Option<PuzzleId> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Complete`
[INFO] [stderr]   --> src/puzzle.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     Complete,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_walls`
[INFO] [stderr]    --> src/puzzle.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn set_walls(&mut self, dirs: &[Direction]) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]   --> src/util.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |         self + dir;
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/util.rs:70:18
[INFO] [stderr]    |
[INFO] [stderr] 70 |         *self += (-rhs.into());
[INFO] [stderr]    |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/main.rs:55:36
[INFO] [stderr]    |
[INFO] [stderr] 55 |                 println!("{}", err.description());
[INFO] [stderr]    |                                    ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `nudge`
[INFO] [stderr]   --> src/util.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn nudge(self, dir: Direction) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `snap_to_edge`
[INFO] [stderr]    --> src/util.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     pub fn snap_to_edge <P: Into<GridIndex>> (mut self, dir: Direction, bounds: P) -> GridIndex {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter_rect`
[INFO] [stderr]    --> src/util.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |     pub fn iter_rect(self, dir_primary: Direction, dir_secondary: Direction) -> RectIterator {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_within`
[INFO] [stderr]    --> src/util.rs:161:5
[INFO] [stderr]     |
[INFO] [stderr] 161 |     pub fn is_within <P: Into<GridIndex>> (self, bound: P) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `component_add`
[INFO] [stderr]    --> src/util.rs:165:5
[INFO] [stderr]     |
[INFO] [stderr] 165 |     pub fn component_add <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `component_diff`
[INFO] [stderr]    --> src/util.rs:170:5
[INFO] [stderr]     |
[INFO] [stderr] 170 |     pub fn component_diff <P: Into<GridIndex>> (self, other: P) -> GridIndex {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/util.rs:261:5
[INFO] [stderr]     |
[INFO] [stderr] 261 |     pub fn new <P: Into<GridIndex>> (range: P, dir_primary: Direction, dir_secondary: Direction) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `of`
[INFO] [stderr]    --> src/util.rs:323:5
[INFO] [stderr]     |
[INFO] [stderr] 323 |     pub fn of <P: Into<GridIndex>> (size: P, val: T) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sand`
[INFO] [stderr]   --> src/world.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     Sand,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Stone`
[INFO] [stderr]   --> src/world.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     Stone,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Water`
[INFO] [stderr]   --> src/world.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     Water,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_blocked`
[INFO] [stderr]   --> src/puzzle.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn is_blocked <P: Into<GridIndex>> (&self, pos: P, dir: Direction) -> Option<PuzzleId> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Complete`
[INFO] [stderr]   --> src/puzzle.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     Complete,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `set_walls`
[INFO] [stderr]    --> src/puzzle.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn set_walls(&mut self, dirs: &[Direction]) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused arithmetic operation that must be used
[INFO] [stderr]   --> src/util.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |         self + dir;
[INFO] [stderr]    |         ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 17 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `"docker" "inspect" "e3f3965be48bf5e604f7006dd1a71e4f5f51339925f799d1ce86b8ba8d2a867e"`
[INFO] running `"docker" "rm" "-f" "e3f3965be48bf5e604f7006dd1a71e4f5f51339925f799d1ce86b8ba8d2a867e"`
[INFO] [stdout] e3f3965be48bf5e604f7006dd1a71e4f5f51339925f799d1ce86b8ba8d2a867e