[INFO] fetching crate raster-retrace 0.1.2...
[INFO] checking raster-retrace-0.1.2 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate raster-retrace 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate raster-retrace 0.1.2 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate raster-retrace 0.1.2
[INFO] finished tweaking crates.io crate raster-retrace 0.1.2
[INFO] tweaked toml for crates.io crate raster-retrace 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43efd93b3c41ddc03d2372c845e38661e8b18aa221ee158f73ba6b3ae48b390d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "43efd93b3c41ddc03d2372c845e38661e8b18aa221ee158f73ba6b3ae48b390d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43efd93b3c41ddc03d2372c845e38661e8b18aa221ee158f73ba6b3ae48b390d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43efd93b3c41ddc03d2372c845e38661e8b18aa221ee158f73ba6b3ae48b390d", kill_on_drop: false }`
[INFO] [stdout] 43efd93b3c41ddc03d2372c845e38661e8b18aa221ee158f73ba6b3ae48b390d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9b53c4ee69e08f14fa2917e9fa1d9de269c00170e2bfa3f080889d16aaae5b37
[INFO] running `Command { std: "docker" "start" "-a" "9b53c4ee69e08f14fa2917e9fa1d9de269c00170e2bfa3f080889d16aaae5b37", kill_on_drop: false }`
[INFO] [stderr]     Checking raster-retrace v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/intern/argparse/mod.rs:5:34
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const ARGDEF_REQUIRED: u32 = (1 << 0);
[INFO] [stdout]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/intern/argparse/mod.rs:6:34
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const ARGDEF_VARARGS: u32 =  (1 << 1);
[INFO] [stdout]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/intern/argparse/mod.rs:29:19
[INFO] [stdout]    |
[INFO] [stdout] 29 |     callback: Box<FnMut(&mut T, &[String]) -> Result<usize, String>>,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut T, &[String]) -> Result<usize, String>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/intern/argparse/mod.rs:87:23
[INFO] [stdout]    |
[INFO] [stdout] 87 |         callback: Box<FnMut(&mut T, &[String]) -> Result<usize, String>>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut T, &[String]) -> Result<usize, String>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/intern/min_heap/mod.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     ((i - 1) >> 1)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/intern/min_heap/mod.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     ((i << 1) + 1)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/intern/min_heap/mod.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     ((i << 1) + 2)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/intern/min_heap/mod.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |         (a.value < b.value)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_outline.rs:45:27
[INFO] [stdout]    |
[INFO] [stdout] 45 |         pub const L: u8 = (1 << 0);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_outline.rs:46:27
[INFO] [stdout]    |
[INFO] [stdout] 46 |         pub const R: u8 = (1 << 1);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_outline.rs:47:27
[INFO] [stdout]    |
[INFO] [stdout] 47 |         pub const D: u8 = (1 << 2);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_outline.rs:48:27
[INFO] [stdout]    |
[INFO] [stdout] 48 |         pub const U: u8 = (1 << 3);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/polys_from_raster_outline.rs:149:29
[INFO] [stdout]     |
[INFO] [stdout] 149 | / ...                   ((x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stdout] 150 | | ...                    (y == xy_a[1] && y == xy_b[1]))
[INFO] [stdout]     | |______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 149 |                             (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stdout] 150 |                              (y == xy_a[1] && y == xy_b[1])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:21:27
[INFO] [stdout]    |
[INFO] [stdout] 21 |         pub const L: u8 = (1 << 0);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:22:27
[INFO] [stdout]    |
[INFO] [stdout] 22 |         pub const R: u8 = (1 << 1);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:23:27
[INFO] [stdout]    |
[INFO] [stdout] 23 |         pub const D: u8 = (1 << 2);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:24:27
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub const U: u8 = (1 << 3);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:26:28
[INFO] [stdout]    |
[INFO] [stdout] 26 |         pub const LD: u8 = (1 << 4);
[INFO] [stdout]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:27:28
[INFO] [stdout]    |
[INFO] [stdout] 27 |         pub const LU: u8 = (1 << 5);
[INFO] [stdout]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:28:28
[INFO] [stdout]    |
[INFO] [stdout] 28 |         pub const RD: u8 = (1 << 6);
[INFO] [stdout]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:29:28
[INFO] [stdout]    |
[INFO] [stdout] 29 |         pub const RU: u8 = (1 << 7);
[INFO] [stdout]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/polys_from_raster_centerline.rs:192:29
[INFO] [stdout]     |
[INFO] [stdout] 192 | / ...                   (
[INFO] [stdout] 193 | | ...                       // axis aligned
[INFO] [stdout] 194 | | ...                       (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stdout] 195 | | ...                       (y == xy_a[1] && y == xy_b[1]) ||
[INFO] [stdout] ...   |
[INFO] [stdout] 212 | | ...                       }
[INFO] [stdout] 213 | | ...                    )
[INFO] [stdout]     | |________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 192 |                             // axis aligned
[INFO] [stdout] 193 |                                 (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stdout] 194 |                                 (y == xy_a[1] && y == xy_b[1]) ||
[INFO] [stdout] 195 |                                 // diagonal
[INFO] [stdout] 196 |                                 {
[INFO] [stdout] 197 |                                     let x_a_delta = xy_a[0] - xy_b[0];
[INFO] [stdout]   ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/polys_from_raster_centerline.rs:203:37
[INFO] [stdout]     |
[INFO] [stdout] 203 | / ...                   (x_a_delta != 0 && y_a_delta != 0 &&
[INFO] [stdout] 204 | | ...                    // no need to check 'b', signum accounts for that case.
[INFO] [stdout] 205 | | ...
[INFO] [stdout] 206 | | ...                    x_a_delta.abs() == y_a_delta.abs() &&
[INFO] [stdout] ...   |
[INFO] [stdout] 210 | | ...                    x_a_delta.signum() == x_b_delta.signum() &&
[INFO] [stdout] 211 | | ...                    y_a_delta.signum() == y_b_delta.signum())
[INFO] [stdout]     | |________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 203 |                                     x_a_delta != 0 && y_a_delta != 0 &&
[INFO] [stdout] 204 |                                      // no need to check 'b', signum accounts for that case.
[INFO] [stdout] 205 | 
[INFO] [stdout] 206 |                                      x_a_delta.abs() == y_a_delta.abs() &&
[INFO] [stdout] 207 |                                      x_b_delta.abs() == y_b_delta.abs() &&
[INFO] [stdout] 208 | 
[INFO] [stdout]   ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:218:37
[INFO] [stdout]     |
[INFO] [stdout] 218 |         if neighbors & DIR_S != 0 { (1 << 4) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:219:37
[INFO] [stdout]     |
[INFO] [stdout] 219 |         if neighbors & DIR_E != 0 { (1 << 1) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:226:37
[INFO] [stdout]     |
[INFO] [stdout] 226 |         if neighbors & DIR_W != 0 { (1 << 4) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:227:37
[INFO] [stdout]     |
[INFO] [stdout] 227 |         if neighbors & DIR_S != 0 { (1 << 2) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:234:37
[INFO] [stdout]     |
[INFO] [stdout] 234 |         if neighbors & DIR_N != 0 { (1 << 4) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:235:37
[INFO] [stdout]     |
[INFO] [stdout] 235 |         if neighbors & DIR_E != 0 { (1 << 1) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:242:37
[INFO] [stdout]     |
[INFO] [stdout] 242 |         if neighbors & DIR_N != 0 { (1 << 4) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:243:37
[INFO] [stdout]     |
[INFO] [stdout] 243 |         if neighbors & DIR_W != 0 { (1 << 2) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> src/curve_write.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     use std::io::prelude::Write;
[INFO] [stdout]    |         ----------------------- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 45 |         use std::io::prelude::Write;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> src/curve_write.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     use std::io::prelude::Write;
[INFO] [stdout]    |         ----------------------- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 83 |         use std::io::prelude::Write;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]    --> src/curve_write.rs:192:13
[INFO] [stdout]     |
[INFO] [stdout] 14  |     use std::io::prelude::Write;
[INFO] [stdout]     |         ----------------------- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 192 |         use std::io::prelude::Write;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]    --> src/curve_write.rs:256:13
[INFO] [stdout]     |
[INFO] [stdout] 14  |     use std::io::prelude::Write;
[INFO] [stdout]     |         ----------------------- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 256 |         use std::io::prelude::Write;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]    --> src/curve_write.rs:355:13
[INFO] [stdout]     |
[INFO] [stdout] 14  |     use std::io::prelude::Write;
[INFO] [stdout]     |         ----------------------- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 355 |         use std::io::prelude::Write;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `polys_from_raster_centerline` is imported redundantly
[INFO] [stdout]   --> src/main.rs:96:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | mod polys_from_raster_centerline;
[INFO] [stdout]    | --------------------------------- the item `polys_from_raster_centerline` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 96 |                 use polys_from_raster_centerline;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `image_skeletonize` is imported redundantly
[INFO] [stdout]    --> src/main.rs:541:21
[INFO] [stdout]     |
[INFO] [stdout] 17  | mod image_skeletonize;
[INFO] [stdout]     | ---------------------- the item `image_skeletonize` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 541 |                 use image_skeletonize;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/intern/argparse/mod.rs:5:34
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub const ARGDEF_REQUIRED: u32 = (1 << 0);
[INFO] [stdout]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]  --> src/intern/argparse/mod.rs:6:34
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const ARGDEF_VARARGS: u32 =  (1 << 1);
[INFO] [stdout]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/intern/argparse/mod.rs:29:19
[INFO] [stdout]    |
[INFO] [stdout] 29 |     callback: Box<FnMut(&mut T, &[String]) -> Result<usize, String>>,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut T, &[String]) -> Result<usize, String>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/intern/argparse/mod.rs:87:23
[INFO] [stdout]    |
[INFO] [stdout] 87 |         callback: Box<FnMut(&mut T, &[String]) -> Result<usize, String>>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut T, &[String]) -> Result<usize, String>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/intern/min_heap/mod.rs:76:5
[INFO] [stdout]    |
[INFO] [stdout] 76 |     ((i - 1) >> 1)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/intern/min_heap/mod.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 |     ((i << 1) + 1)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/intern/min_heap/mod.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 82 |     ((i << 1) + 2)
[INFO] [stdout]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/intern/min_heap/mod.rs:96:9
[INFO] [stdout]    |
[INFO] [stdout] 96 |         (a.value < b.value)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_outline.rs:45:27
[INFO] [stdout]    |
[INFO] [stdout] 45 |         pub const L: u8 = (1 << 0);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_outline.rs:46:27
[INFO] [stdout]    |
[INFO] [stdout] 46 |         pub const R: u8 = (1 << 1);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_outline.rs:47:27
[INFO] [stdout]    |
[INFO] [stdout] 47 |         pub const D: u8 = (1 << 2);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_outline.rs:48:27
[INFO] [stdout]    |
[INFO] [stdout] 48 |         pub const U: u8 = (1 << 3);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/polys_from_raster_outline.rs:149:29
[INFO] [stdout]     |
[INFO] [stdout] 149 | / ...                   ((x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stdout] 150 | | ...                    (y == xy_a[1] && y == xy_b[1]))
[INFO] [stdout]     | |______________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 149 |                             (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stdout] 150 |                              (y == xy_a[1] && y == xy_b[1])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:21:27
[INFO] [stdout]    |
[INFO] [stdout] 21 |         pub const L: u8 = (1 << 0);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:22:27
[INFO] [stdout]    |
[INFO] [stdout] 22 |         pub const R: u8 = (1 << 1);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:23:27
[INFO] [stdout]    |
[INFO] [stdout] 23 |         pub const D: u8 = (1 << 2);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:24:27
[INFO] [stdout]    |
[INFO] [stdout] 24 |         pub const U: u8 = (1 << 3);
[INFO] [stdout]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:26:28
[INFO] [stdout]    |
[INFO] [stdout] 26 |         pub const LD: u8 = (1 << 4);
[INFO] [stdout]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:27:28
[INFO] [stdout]    |
[INFO] [stdout] 27 |         pub const LU: u8 = (1 << 5);
[INFO] [stdout]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:28:28
[INFO] [stdout]    |
[INFO] [stdout] 28 |         pub const RD: u8 = (1 << 6);
[INFO] [stdout]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/polys_from_raster_centerline.rs:29:28
[INFO] [stdout]    |
[INFO] [stdout] 29 |         pub const RU: u8 = (1 << 7);
[INFO] [stdout]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/polys_from_raster_centerline.rs:192:29
[INFO] [stdout]     |
[INFO] [stdout] 192 | / ...                   (
[INFO] [stdout] 193 | | ...                       // axis aligned
[INFO] [stdout] 194 | | ...                       (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stdout] 195 | | ...                       (y == xy_a[1] && y == xy_b[1]) ||
[INFO] [stdout] ...   |
[INFO] [stdout] 212 | | ...                       }
[INFO] [stdout] 213 | | ...                    )
[INFO] [stdout]     | |________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 192 |                             // axis aligned
[INFO] [stdout] 193 |                                 (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stdout] 194 |                                 (y == xy_a[1] && y == xy_b[1]) ||
[INFO] [stdout] 195 |                                 // diagonal
[INFO] [stdout] 196 |                                 {
[INFO] [stdout] 197 |                                     let x_a_delta = xy_a[0] - xy_b[0];
[INFO] [stdout]   ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/polys_from_raster_centerline.rs:203:37
[INFO] [stdout]     |
[INFO] [stdout] 203 | / ...                   (x_a_delta != 0 && y_a_delta != 0 &&
[INFO] [stdout] 204 | | ...                    // no need to check 'b', signum accounts for that case.
[INFO] [stdout] 205 | | ...
[INFO] [stdout] 206 | | ...                    x_a_delta.abs() == y_a_delta.abs() &&
[INFO] [stdout] ...   |
[INFO] [stdout] 210 | | ...                    x_a_delta.signum() == x_b_delta.signum() &&
[INFO] [stdout] 211 | | ...                    y_a_delta.signum() == y_b_delta.signum())
[INFO] [stdout]     | |________________________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 203 |                                     x_a_delta != 0 && y_a_delta != 0 &&
[INFO] [stdout] 204 |                                      // no need to check 'b', signum accounts for that case.
[INFO] [stdout] 205 | 
[INFO] [stdout] 206 |                                      x_a_delta.abs() == y_a_delta.abs() &&
[INFO] [stdout] 207 |                                      x_b_delta.abs() == y_b_delta.abs() &&
[INFO] [stdout] 208 | 
[INFO] [stdout]   ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:218:37
[INFO] [stdout]     |
[INFO] [stdout] 218 |         if neighbors & DIR_S != 0 { (1 << 4) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:219:37
[INFO] [stdout]     |
[INFO] [stdout] 219 |         if neighbors & DIR_E != 0 { (1 << 1) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:226:37
[INFO] [stdout]     |
[INFO] [stdout] 226 |         if neighbors & DIR_W != 0 { (1 << 4) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:227:37
[INFO] [stdout]     |
[INFO] [stdout] 227 |         if neighbors & DIR_S != 0 { (1 << 2) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:234:37
[INFO] [stdout]     |
[INFO] [stdout] 234 |         if neighbors & DIR_N != 0 { (1 << 4) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:235:37
[INFO] [stdout]     |
[INFO] [stdout] 235 |         if neighbors & DIR_E != 0 { (1 << 1) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:242:37
[INFO] [stdout]     |
[INFO] [stdout] 242 |         if neighbors & DIR_N != 0 { (1 << 4) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/image_skeletonize.rs:243:37
[INFO] [stdout]     |
[INFO] [stdout] 243 |         if neighbors & DIR_W != 0 { (1 << 2) } else { 0 } |
[INFO] [stdout]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> src/curve_write.rs:45:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     use std::io::prelude::Write;
[INFO] [stdout]    |         ----------------------- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 45 |         use std::io::prelude::Write;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> src/curve_write.rs:83:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     use std::io::prelude::Write;
[INFO] [stdout]    |         ----------------------- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 83 |         use std::io::prelude::Write;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]    --> src/curve_write.rs:192:13
[INFO] [stdout]     |
[INFO] [stdout] 14  |     use std::io::prelude::Write;
[INFO] [stdout]     |         ----------------------- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 192 |         use std::io::prelude::Write;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]    --> src/curve_write.rs:256:13
[INFO] [stdout]     |
[INFO] [stdout] 14  |     use std::io::prelude::Write;
[INFO] [stdout]     |         ----------------------- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 256 |         use std::io::prelude::Write;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]    --> src/curve_write.rs:355:13
[INFO] [stdout]     |
[INFO] [stdout] 14  |     use std::io::prelude::Write;
[INFO] [stdout]     |         ----------------------- the item `Write` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 355 |         use std::io::prelude::Write;
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `polys_from_raster_centerline` is imported redundantly
[INFO] [stdout]   --> src/main.rs:96:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | mod polys_from_raster_centerline;
[INFO] [stdout]    | --------------------------------- the item `polys_from_raster_centerline` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 96 |                 use polys_from_raster_centerline;
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `image_skeletonize` is imported redundantly
[INFO] [stdout]    --> src/main.rs:541:21
[INFO] [stdout]     |
[INFO] [stdout] 17  | mod image_skeletonize;
[INFO] [stdout]     | ---------------------- the item `image_skeletonize` is already defined here
[INFO] [stdout] ...
[INFO] [stdout] 541 |                 use image_skeletonize;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 38 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.29s
[INFO] running `Command { std: "docker" "inspect" "9b53c4ee69e08f14fa2917e9fa1d9de269c00170e2bfa3f080889d16aaae5b37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b53c4ee69e08f14fa2917e9fa1d9de269c00170e2bfa3f080889d16aaae5b37", kill_on_drop: false }`
[INFO] [stdout] 9b53c4ee69e08f14fa2917e9fa1d9de269c00170e2bfa3f080889d16aaae5b37