[INFO] crate raster-retrace 0.1.2 is already in cache
[INFO] testing raster-retrace-0.1.2 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate raster-retrace 0.1.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate raster-retrace 0.1.2 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-8/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b6c5398a1653471502951aa8eb54eb56e8d0871705551e6e249421e0086a6d90
[INFO] running `"docker" "start" "-a" "b6c5398a1653471502951aa8eb54eb56e8d0871705551e6e249421e0086a6d90"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling raster-retrace v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]  --> src/intern/argparse/mod.rs:5:34
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const ARGDEF_REQUIRED: u32 = (1 << 0);
[INFO] [stderr]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]  --> src/intern/argparse/mod.rs:6:34
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub const ARGDEF_VARARGS: u32 =  (1 << 1);
[INFO] [stderr]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/intern/argparse/mod.rs:29:19
[INFO] [stderr]    |
[INFO] [stderr] 29 |     callback: Box<FnMut(&mut T, &[String]) -> Result<usize, String>>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut T, &[String]) -> Result<usize, String>`
[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/intern/argparse/mod.rs:87:23
[INFO] [stderr]    |
[INFO] [stderr] 87 |         callback: Box<FnMut(&mut T, &[String]) -> Result<usize, String>>,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut T, &[String]) -> Result<usize, String>`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     ((i - 1) >> 1)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     ((i << 1) + 1)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     ((i << 1) + 2)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |         (a.value < b.value)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:45:27
[INFO] [stderr]    |
[INFO] [stderr] 45 |         pub const L: u8 = (1 << 0);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:46:27
[INFO] [stderr]    |
[INFO] [stderr] 46 |         pub const R: u8 = (1 << 1);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:47:27
[INFO] [stderr]    |
[INFO] [stderr] 47 |         pub const D: u8 = (1 << 2);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:48:27
[INFO] [stderr]    |
[INFO] [stderr] 48 |         pub const U: u8 = (1 << 3);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/polys_from_raster_outline.rs:149:29
[INFO] [stderr]     |
[INFO] [stderr] 149 | / ...                   ((x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 150 | | ...                    (y == xy_a[1] && y == xy_b[1]))
[INFO] [stderr]     | |______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 149 |                             (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 150 |                              (y == xy_a[1] && y == xy_b[1])
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 |         pub const L: u8 = (1 << 0);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:22:27
[INFO] [stderr]    |
[INFO] [stderr] 22 |         pub const R: u8 = (1 << 1);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:23:27
[INFO] [stderr]    |
[INFO] [stderr] 23 |         pub const D: u8 = (1 << 2);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:24:27
[INFO] [stderr]    |
[INFO] [stderr] 24 |         pub const U: u8 = (1 << 3);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:26:28
[INFO] [stderr]    |
[INFO] [stderr] 26 |         pub const LD: u8 = (1 << 4);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:27:28
[INFO] [stderr]    |
[INFO] [stderr] 27 |         pub const LU: u8 = (1 << 5);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:28:28
[INFO] [stderr]    |
[INFO] [stderr] 28 |         pub const RD: u8 = (1 << 6);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:29:28
[INFO] [stderr]    |
[INFO] [stderr] 29 |         pub const RU: u8 = (1 << 7);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/polys_from_raster_centerline.rs:192:29
[INFO] [stderr]     |
[INFO] [stderr] 192 | / ...                   (
[INFO] [stderr] 193 | | ...                       // axis aligned
[INFO] [stderr] 194 | | ...                       (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 195 | | ...                       (y == xy_a[1] && y == xy_b[1]) ||
[INFO] [stderr] ...   |
[INFO] [stderr] 212 | | ...                       }
[INFO] [stderr] 213 | | ...                    )
[INFO] [stderr]     | |________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 192 |                             
[INFO] [stderr] 193 |                                 // axis aligned
[INFO] [stderr] 194 |                                 (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 195 |                                 (y == xy_a[1] && y == xy_b[1]) ||
[INFO] [stderr] 196 |                                 // diagonal
[INFO] [stderr] 197 |                                 {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/polys_from_raster_centerline.rs:203:37
[INFO] [stderr]     |
[INFO] [stderr] 203 | / ...                   (x_a_delta != 0 && y_a_delta != 0 &&
[INFO] [stderr] 204 | | ...                    // no need to check 'b', signum accounts for that case.
[INFO] [stderr] 205 | | ...
[INFO] [stderr] 206 | | ...                    x_a_delta.abs() == y_a_delta.abs() &&
[INFO] [stderr] ...   |
[INFO] [stderr] 210 | | ...                    x_a_delta.signum() == x_b_delta.signum() &&
[INFO] [stderr] 211 | | ...                    y_a_delta.signum() == y_b_delta.signum())
[INFO] [stderr]     | |________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 203 |                                     x_a_delta != 0 && y_a_delta != 0 &&
[INFO] [stderr] 204 |                                      // no need to check 'b', signum accounts for that case.
[INFO] [stderr] 205 | 
[INFO] [stderr] 206 |                                      x_a_delta.abs() == y_a_delta.abs() &&
[INFO] [stderr] 207 |                                      x_b_delta.abs() == y_b_delta.abs() &&
[INFO] [stderr] 208 | 
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:218:37
[INFO] [stderr]     |
[INFO] [stderr] 218 |         if neighbors & DIR_S != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:219:37
[INFO] [stderr]     |
[INFO] [stderr] 219 |         if neighbors & DIR_E != 0 { (1 << 1) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:226:37
[INFO] [stderr]     |
[INFO] [stderr] 226 |         if neighbors & DIR_W != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:227:37
[INFO] [stderr]     |
[INFO] [stderr] 227 |         if neighbors & DIR_S != 0 { (1 << 2) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:234:37
[INFO] [stderr]     |
[INFO] [stderr] 234 |         if neighbors & DIR_N != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:235:37
[INFO] [stderr]     |
[INFO] [stderr] 235 |         if neighbors & DIR_E != 0 { (1 << 1) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:242:37
[INFO] [stderr]     |
[INFO] [stderr] 242 |         if neighbors & DIR_N != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:243:37
[INFO] [stderr]     |
[INFO] [stderr] 243 |         if neighbors & DIR_W != 0 { (1 << 2) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/curve_write.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     use std::io::prelude::Write;
[INFO] [stderr]    |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 45 |         use std::io::prelude::Write;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/curve_write.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     use std::io::prelude::Write;
[INFO] [stderr]    |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 83 |         use std::io::prelude::Write;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]    --> src/curve_write.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 14  |     use std::io::prelude::Write;
[INFO] [stderr]     |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 192 |         use std::io::prelude::Write;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]    --> src/curve_write.rs:256:13
[INFO] [stderr]     |
[INFO] [stderr] 14  |     use std::io::prelude::Write;
[INFO] [stderr]     |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 256 |         use std::io::prelude::Write;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]    --> src/curve_write.rs:355:13
[INFO] [stderr]     |
[INFO] [stderr] 14  |     use std::io::prelude::Write;
[INFO] [stderr]     |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 355 |         use std::io::prelude::Write;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `polys_from_raster_centerline` is imported redundantly
[INFO] [stderr]   --> src/main.rs:96:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | mod polys_from_raster_centerline;
[INFO] [stderr]    | --------------------------------- the item `polys_from_raster_centerline` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 96 |                 use polys_from_raster_centerline;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `image_skeletonize` is imported redundantly
[INFO] [stderr]    --> src/main.rs:541:21
[INFO] [stderr]     |
[INFO] [stderr] 17  | mod image_skeletonize;
[INFO] [stderr]     | ---------------------- the item `image_skeletonize` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 541 |                 use image_skeletonize;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 38 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.91s
[INFO] running `"docker" "inspect" "b6c5398a1653471502951aa8eb54eb56e8d0871705551e6e249421e0086a6d90"`
[INFO] running `"docker" "rm" "-f" "b6c5398a1653471502951aa8eb54eb56e8d0871705551e6e249421e0086a6d90"`
[INFO] [stdout] b6c5398a1653471502951aa8eb54eb56e8d0871705551e6e249421e0086a6d90
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1c8d684eee74a3d915941568842853faca980f80bedc835b59ef8d615ac2e2c7
[INFO] running `"docker" "start" "-a" "1c8d684eee74a3d915941568842853faca980f80bedc835b59ef8d615ac2e2c7"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling raster-retrace v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]  --> src/intern/argparse/mod.rs:5:34
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const ARGDEF_REQUIRED: u32 = (1 << 0);
[INFO] [stderr]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]  --> src/intern/argparse/mod.rs:6:34
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub const ARGDEF_VARARGS: u32 =  (1 << 1);
[INFO] [stderr]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/intern/argparse/mod.rs:29:19
[INFO] [stderr]    |
[INFO] [stderr] 29 |     callback: Box<FnMut(&mut T, &[String]) -> Result<usize, String>>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut T, &[String]) -> Result<usize, String>`
[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/intern/argparse/mod.rs:87:23
[INFO] [stderr]    |
[INFO] [stderr] 87 |         callback: Box<FnMut(&mut T, &[String]) -> Result<usize, String>>,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut T, &[String]) -> Result<usize, String>`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     ((i - 1) >> 1)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     ((i << 1) + 1)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     ((i << 1) + 2)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |         (a.value < b.value)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:45:27
[INFO] [stderr]    |
[INFO] [stderr] 45 |         pub const L: u8 = (1 << 0);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:46:27
[INFO] [stderr]    |
[INFO] [stderr] 46 |         pub const R: u8 = (1 << 1);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:47:27
[INFO] [stderr]    |
[INFO] [stderr] 47 |         pub const D: u8 = (1 << 2);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:48:27
[INFO] [stderr]    |
[INFO] [stderr] 48 |         pub const U: u8 = (1 << 3);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/polys_from_raster_outline.rs:149:29
[INFO] [stderr]     |
[INFO] [stderr] 149 | / ...                   ((x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 150 | | ...                    (y == xy_a[1] && y == xy_b[1]))
[INFO] [stderr]     | |______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 149 |                             (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 150 |                              (y == xy_a[1] && y == xy_b[1])
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 |         pub const L: u8 = (1 << 0);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:22:27
[INFO] [stderr]    |
[INFO] [stderr] 22 |         pub const R: u8 = (1 << 1);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:23:27
[INFO] [stderr]    |
[INFO] [stderr] 23 |         pub const D: u8 = (1 << 2);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:24:27
[INFO] [stderr]    |
[INFO] [stderr] 24 |         pub const U: u8 = (1 << 3);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:26:28
[INFO] [stderr]    |
[INFO] [stderr] 26 |         pub const LD: u8 = (1 << 4);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:27:28
[INFO] [stderr]    |
[INFO] [stderr] 27 |         pub const LU: u8 = (1 << 5);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:28:28
[INFO] [stderr]    |
[INFO] [stderr] 28 |         pub const RD: u8 = (1 << 6);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:29:28
[INFO] [stderr]    |
[INFO] [stderr] 29 |         pub const RU: u8 = (1 << 7);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/polys_from_raster_centerline.rs:192:29
[INFO] [stderr]     |
[INFO] [stderr] 192 | / ...                   (
[INFO] [stderr] 193 | | ...                       // axis aligned
[INFO] [stderr] 194 | | ...                       (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 195 | | ...                       (y == xy_a[1] && y == xy_b[1]) ||
[INFO] [stderr] ...   |
[INFO] [stderr] 212 | | ...                       }
[INFO] [stderr] 213 | | ...                    )
[INFO] [stderr]     | |________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 192 |                             
[INFO] [stderr] 193 |                                 // axis aligned
[INFO] [stderr] 194 |                                 (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 195 |                                 (y == xy_a[1] && y == xy_b[1]) ||
[INFO] [stderr] 196 |                                 // diagonal
[INFO] [stderr] 197 |                                 {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/polys_from_raster_centerline.rs:203:37
[INFO] [stderr]     |
[INFO] [stderr] 203 | / ...                   (x_a_delta != 0 && y_a_delta != 0 &&
[INFO] [stderr] 204 | | ...                    // no need to check 'b', signum accounts for that case.
[INFO] [stderr] 205 | | ...
[INFO] [stderr] 206 | | ...                    x_a_delta.abs() == y_a_delta.abs() &&
[INFO] [stderr] ...   |
[INFO] [stderr] 210 | | ...                    x_a_delta.signum() == x_b_delta.signum() &&
[INFO] [stderr] 211 | | ...                    y_a_delta.signum() == y_b_delta.signum())
[INFO] [stderr]     | |________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 203 |                                     x_a_delta != 0 && y_a_delta != 0 &&
[INFO] [stderr] 204 |                                      // no need to check 'b', signum accounts for that case.
[INFO] [stderr] 205 | 
[INFO] [stderr] 206 |                                      x_a_delta.abs() == y_a_delta.abs() &&
[INFO] [stderr] 207 |                                      x_b_delta.abs() == y_b_delta.abs() &&
[INFO] [stderr] 208 | 
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:218:37
[INFO] [stderr]     |
[INFO] [stderr] 218 |         if neighbors & DIR_S != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:219:37
[INFO] [stderr]     |
[INFO] [stderr] 219 |         if neighbors & DIR_E != 0 { (1 << 1) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:226:37
[INFO] [stderr]     |
[INFO] [stderr] 226 |         if neighbors & DIR_W != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:227:37
[INFO] [stderr]     |
[INFO] [stderr] 227 |         if neighbors & DIR_S != 0 { (1 << 2) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:234:37
[INFO] [stderr]     |
[INFO] [stderr] 234 |         if neighbors & DIR_N != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:235:37
[INFO] [stderr]     |
[INFO] [stderr] 235 |         if neighbors & DIR_E != 0 { (1 << 1) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:242:37
[INFO] [stderr]     |
[INFO] [stderr] 242 |         if neighbors & DIR_N != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:243:37
[INFO] [stderr]     |
[INFO] [stderr] 243 |         if neighbors & DIR_W != 0 { (1 << 2) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/curve_write.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     use std::io::prelude::Write;
[INFO] [stderr]    |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 45 |         use std::io::prelude::Write;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/curve_write.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     use std::io::prelude::Write;
[INFO] [stderr]    |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 83 |         use std::io::prelude::Write;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]    --> src/curve_write.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 14  |     use std::io::prelude::Write;
[INFO] [stderr]     |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 192 |         use std::io::prelude::Write;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]    --> src/curve_write.rs:256:13
[INFO] [stderr]     |
[INFO] [stderr] 14  |     use std::io::prelude::Write;
[INFO] [stderr]     |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 256 |         use std::io::prelude::Write;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]    --> src/curve_write.rs:355:13
[INFO] [stderr]     |
[INFO] [stderr] 14  |     use std::io::prelude::Write;
[INFO] [stderr]     |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 355 |         use std::io::prelude::Write;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `polys_from_raster_centerline` is imported redundantly
[INFO] [stderr]   --> src/main.rs:96:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | mod polys_from_raster_centerline;
[INFO] [stderr]    | --------------------------------- the item `polys_from_raster_centerline` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 96 |                 use polys_from_raster_centerline;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `image_skeletonize` is imported redundantly
[INFO] [stderr]    --> src/main.rs:541:21
[INFO] [stderr]     |
[INFO] [stderr] 17  | mod image_skeletonize;
[INFO] [stderr]     | ---------------------- the item `image_skeletonize` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 541 |                 use image_skeletonize;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 38 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.23s
[INFO] running `"docker" "inspect" "1c8d684eee74a3d915941568842853faca980f80bedc835b59ef8d615ac2e2c7"`
[INFO] running `"docker" "rm" "-f" "1c8d684eee74a3d915941568842853faca980f80bedc835b59ef8d615ac2e2c7"`
[INFO] [stdout] 1c8d684eee74a3d915941568842853faca980f80bedc835b59ef8d615ac2e2c7
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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" "+beta-2020-06-03" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f780bd2dfc227502c9036cc9fc1120f72ab1d06f7978afa1671c3cb88a571a8a
[INFO] running `"docker" "start" "-a" "f780bd2dfc227502c9036cc9fc1120f72ab1d06f7978afa1671c3cb88a571a8a"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]  --> src/intern/argparse/mod.rs:5:34
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub const ARGDEF_REQUIRED: u32 = (1 << 0);
[INFO] [stderr]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]  --> src/intern/argparse/mod.rs:6:34
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub const ARGDEF_VARARGS: u32 =  (1 << 1);
[INFO] [stderr]   |                                  ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/intern/argparse/mod.rs:29:19
[INFO] [stderr]    |
[INFO] [stderr] 29 |     callback: Box<FnMut(&mut T, &[String]) -> Result<usize, String>>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut T, &[String]) -> Result<usize, String>`
[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/intern/argparse/mod.rs:87:23
[INFO] [stderr]    |
[INFO] [stderr] 87 |         callback: Box<FnMut(&mut T, &[String]) -> Result<usize, String>>,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&mut T, &[String]) -> Result<usize, String>`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     ((i - 1) >> 1)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     ((i << 1) + 1)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     ((i << 1) + 2)
[INFO] [stderr]    |     ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/intern/min_heap/mod.rs:96:9
[INFO] [stderr]    |
[INFO] [stderr] 96 |         (a.value < b.value)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:45:27
[INFO] [stderr]    |
[INFO] [stderr] 45 |         pub const L: u8 = (1 << 0);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:46:27
[INFO] [stderr]    |
[INFO] [stderr] 46 |         pub const R: u8 = (1 << 1);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:47:27
[INFO] [stderr]    |
[INFO] [stderr] 47 |         pub const D: u8 = (1 << 2);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_outline.rs:48:27
[INFO] [stderr]    |
[INFO] [stderr] 48 |         pub const U: u8 = (1 << 3);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/polys_from_raster_outline.rs:149:29
[INFO] [stderr]     |
[INFO] [stderr] 149 | / ...                   ((x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 150 | | ...                    (y == xy_a[1] && y == xy_b[1]))
[INFO] [stderr]     | |______________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 149 |                             (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 150 |                              (y == xy_a[1] && y == xy_b[1])
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 |         pub const L: u8 = (1 << 0);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:22:27
[INFO] [stderr]    |
[INFO] [stderr] 22 |         pub const R: u8 = (1 << 1);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:23:27
[INFO] [stderr]    |
[INFO] [stderr] 23 |         pub const D: u8 = (1 << 2);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:24:27
[INFO] [stderr]    |
[INFO] [stderr] 24 |         pub const U: u8 = (1 << 3);
[INFO] [stderr]    |                           ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:26:28
[INFO] [stderr]    |
[INFO] [stderr] 26 |         pub const LD: u8 = (1 << 4);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:27:28
[INFO] [stderr]    |
[INFO] [stderr] 27 |         pub const LU: u8 = (1 << 5);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:28:28
[INFO] [stderr]    |
[INFO] [stderr] 28 |         pub const RD: u8 = (1 << 6);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/polys_from_raster_centerline.rs:29:28
[INFO] [stderr]    |
[INFO] [stderr] 29 |         pub const RU: u8 = (1 << 7);
[INFO] [stderr]    |                            ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/polys_from_raster_centerline.rs:192:29
[INFO] [stderr]     |
[INFO] [stderr] 192 | / ...                   (
[INFO] [stderr] 193 | | ...                       // axis aligned
[INFO] [stderr] 194 | | ...                       (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 195 | | ...                       (y == xy_a[1] && y == xy_b[1]) ||
[INFO] [stderr] ...   |
[INFO] [stderr] 212 | | ...                       }
[INFO] [stderr] 213 | | ...                    )
[INFO] [stderr]     | |________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 192 |                             
[INFO] [stderr] 193 |                                 // axis aligned
[INFO] [stderr] 194 |                                 (x == xy_a[0] && x == xy_b[0]) ||
[INFO] [stderr] 195 |                                 (y == xy_a[1] && y == xy_b[1]) ||
[INFO] [stderr] 196 |                                 // diagonal
[INFO] [stderr] 197 |                                 {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/polys_from_raster_centerline.rs:203:37
[INFO] [stderr]     |
[INFO] [stderr] 203 | / ...                   (x_a_delta != 0 && y_a_delta != 0 &&
[INFO] [stderr] 204 | | ...                    // no need to check 'b', signum accounts for that case.
[INFO] [stderr] 205 | | ...
[INFO] [stderr] 206 | | ...                    x_a_delta.abs() == y_a_delta.abs() &&
[INFO] [stderr] ...   |
[INFO] [stderr] 210 | | ...                    x_a_delta.signum() == x_b_delta.signum() &&
[INFO] [stderr] 211 | | ...                    y_a_delta.signum() == y_b_delta.signum())
[INFO] [stderr]     | |________________________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 203 |                                     x_a_delta != 0 && y_a_delta != 0 &&
[INFO] [stderr] 204 |                                      // no need to check 'b', signum accounts for that case.
[INFO] [stderr] 205 | 
[INFO] [stderr] 206 |                                      x_a_delta.abs() == y_a_delta.abs() &&
[INFO] [stderr] 207 |                                      x_b_delta.abs() == y_b_delta.abs() &&
[INFO] [stderr] 208 | 
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:218:37
[INFO] [stderr]     |
[INFO] [stderr] 218 |         if neighbors & DIR_S != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:219:37
[INFO] [stderr]     |
[INFO] [stderr] 219 |         if neighbors & DIR_E != 0 { (1 << 1) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:226:37
[INFO] [stderr]     |
[INFO] [stderr] 226 |         if neighbors & DIR_W != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:227:37
[INFO] [stderr]     |
[INFO] [stderr] 227 |         if neighbors & DIR_S != 0 { (1 << 2) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:234:37
[INFO] [stderr]     |
[INFO] [stderr] 234 |         if neighbors & DIR_N != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:235:37
[INFO] [stderr]     |
[INFO] [stderr] 235 |         if neighbors & DIR_E != 0 { (1 << 1) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:242:37
[INFO] [stderr]     |
[INFO] [stderr] 242 |         if neighbors & DIR_N != 0 { (1 << 4) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> src/image_skeletonize.rs:243:37
[INFO] [stderr]     |
[INFO] [stderr] 243 |         if neighbors & DIR_W != 0 { (1 << 2) } else { 0 } |
[INFO] [stderr]     |                                     ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/curve_write.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     use std::io::prelude::Write;
[INFO] [stderr]    |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 45 |         use std::io::prelude::Write;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> src/curve_write.rs:83:13
[INFO] [stderr]    |
[INFO] [stderr] 14 |     use std::io::prelude::Write;
[INFO] [stderr]    |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 83 |         use std::io::prelude::Write;
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]    --> src/curve_write.rs:192:13
[INFO] [stderr]     |
[INFO] [stderr] 14  |     use std::io::prelude::Write;
[INFO] [stderr]     |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 192 |         use std::io::prelude::Write;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]    --> src/curve_write.rs:256:13
[INFO] [stderr]     |
[INFO] [stderr] 14  |     use std::io::prelude::Write;
[INFO] [stderr]     |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 256 |         use std::io::prelude::Write;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]    --> src/curve_write.rs:355:13
[INFO] [stderr]     |
[INFO] [stderr] 14  |     use std::io::prelude::Write;
[INFO] [stderr]     |         ----------------------- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 355 |         use std::io::prelude::Write;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `polys_from_raster_centerline` is imported redundantly
[INFO] [stderr]   --> src/main.rs:96:21
[INFO] [stderr]    |
[INFO] [stderr] 13 | mod polys_from_raster_centerline;
[INFO] [stderr]    | --------------------------------- the item `polys_from_raster_centerline` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 96 |                 use polys_from_raster_centerline;
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `image_skeletonize` is imported redundantly
[INFO] [stderr]    --> src/main.rs:541:21
[INFO] [stderr]     |
[INFO] [stderr] 17  | mod image_skeletonize;
[INFO] [stderr]     | ---------------------- the item `image_skeletonize` is already defined here
[INFO] [stderr] ...
[INFO] [stderr] 541 |                 use image_skeletonize;
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 38 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/raster_retrace-1936149ea34003b7
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] 12 -> 3
[INFO] [stdout] 68 -> 14
[INFO] [stdout] test test::test_image_small ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test::test_image_small stdout ----
[INFO] [stdout] Total points: 17
[INFO] [stdout] 
[INFO] [stdout] thread 'test::test_image_small' panicked at 'Create output file: Os { code: 30, kind: Other, message: "Read-only file system" }', src/main.rs:151:13
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5597d822e485 - backtrace::backtrace::libunwind::trace::h07c956be65d9b461
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86
[INFO] [stdout]    1:     0x5597d822e485 - backtrace::backtrace::trace_unsynchronized::h2fdb9e4177ad4d20
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x5597d822e485 - std::sys_common::backtrace::_print_fmt::ha62d8426311107ac
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:78
[INFO] [stdout]    3:     0x5597d822e485 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h3ec6bdab62f1e8d9
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stdout]    4:     0x5597d825630c - core::fmt::write::h935cb0ed4078a853
[INFO] [stdout]                                at src/libcore/fmt/mod.rs:1076
[INFO] [stdout]    5:     0x5597d81e2655 - std::io::Write::write_fmt::h944a31ab04b0dfe4
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/io/mod.rs:1537
[INFO] [stdout]    6:     0x5597d82289c1 - std::io::impls::<impl std::io::Write for alloc::boxed::Box<W>>::write_fmt::h6bd94c41a9c566d2
[INFO] [stdout]                                at src/libstd/io/impls.rs:176
[INFO] [stdout]    7:     0x5597d8230cb0 - std::sys_common::backtrace::_print::h460db802d801ccf8
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stdout]    8:     0x5597d8230cb0 - std::sys_common::backtrace::print::h399d664f56640530
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stdout]    9:     0x5597d8230cb0 - std::panicking::default_hook::{{closure}}::hc6dfd87957c765b8
[INFO] [stdout]                                at src/libstd/panicking.rs:198
[INFO] [stdout]   10:     0x5597d82309aa - std::panicking::default_hook::hfdceba6d6d1a18ae
[INFO] [stdout]                                at src/libstd/panicking.rs:215
[INFO] [stdout]   11:     0x5597d82312e7 - std::panicking::rust_panic_with_hook::hd01e282bff1b1e63
[INFO] [stdout]                                at src/libstd/panicking.rs:486
[INFO] [stdout]   12:     0x5597d8230eeb - rust_begin_unwind
[INFO] [stdout]                                at src/libstd/panicking.rs:388
[INFO] [stdout]   13:     0x5597d8254ca1 - core::panicking::panic_fmt::habd7df443069602c
[INFO] [stdout]                                at src/libcore/panicking.rs:101
[INFO] [stdout]   14:     0x5597d8254ac3 - core::option::expect_none_failed::h721078758a086285
[INFO] [stdout]                                at src/libcore/option.rs:1272
[INFO] [stdout]   15:     0x5597d81ae9c9 - core::result::Result<T,E>::expect::h39139259cf51ab32
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libcore/result.rs:963
[INFO] [stdout]   16:     0x5597d81a523d - raster_retrace::trace_image::h7a1b870b8ae24b32
[INFO] [stdout]                                at src/main.rs:151
[INFO] [stdout]   17:     0x5597d81c40f3 - raster_retrace::test::test_image_small::h3095603f27812e64
[INFO] [stdout]                                at src/tests.rs:12
[INFO] [stdout]   18:     0x5597d81c3fca - raster_retrace::test::test_image_small::{{closure}}::h6eb6fcbd07d878bd
[INFO] [stdout]                                at src/tests.rs:8
[INFO] [stdout]   19:     0x5597d81bda3e - core::ops::function::FnOnce::call_once::he35bc9cb0a042594
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libcore/ops/function.rs:232
[INFO] [stdout]   20:     0x5597d8209a42 - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hd23431bd7b767a0c
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/liballoc/boxed.rs:1076
[INFO] [stdout]   21:     0x5597d8209a42 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h6986d2e83b783a4e
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/panic.rs:318
[INFO] [stdout]   22:     0x5597d8209a42 - std::panicking::try::do_call::haee67871ebe8ee92
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/panicking.rs:297
[INFO] [stdout]   23:     0x5597d8209a42 - std::panicking::try::hcba534043f17f42d
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/panicking.rs:274
[INFO] [stdout]   24:     0x5597d8209a42 - std::panic::catch_unwind::h6908c2ae7517b434
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/panic.rs:394
[INFO] [stdout]   25:     0x5597d8209a42 - test::run_test_in_process::h66277a63b8267865
[INFO] [stdout]                                at src/libtest/lib.rs:541
[INFO] [stdout]   26:     0x5597d8209a42 - test::run_test::run_test_inner::{{closure}}::h591f321b83c3f302
[INFO] [stdout]                                at src/libtest/lib.rs:450
[INFO] [stdout]   27:     0x5597d81e1b16 - std::sys_common::backtrace::__rust_begin_short_backtrace::h843e47ea29613666
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/sys_common/backtrace.rs:130
[INFO] [stdout]   28:     0x5597d81e70b5 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::ha6c43669df0cbe25
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/thread/mod.rs:475
[INFO] [stdout]   29:     0x5597d81e70b5 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hc86e5439e615a14a
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/panic.rs:318
[INFO] [stdout]   30:     0x5597d81e70b5 - std::panicking::try::do_call::h4b45bcf4d5d82a80
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/panicking.rs:297
[INFO] [stdout]   31:     0x5597d81e70b5 - std::panicking::try::h297c0c407d3f8196
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/panicking.rs:274
[INFO] [stdout]   32:     0x5597d81e70b5 - std::panic::catch_unwind::h877baa9fbef2eafe
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/panic.rs:394
[INFO] [stdout]   33:     0x5597d81e70b5 - std::thread::Builder::spawn_unchecked::{{closure}}::hdb000626ad29158a
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libstd/thread/mod.rs:474
[INFO] [stdout]   34:     0x5597d81e70b5 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h87e786b011f05b5c
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/libcore/ops/function.rs:232
[INFO] [stdout]   35:     0x5597d82375aa - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hfc5c0e64036d1b09
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/liballoc/boxed.rs:1076
[INFO] [stdout]   36:     0x5597d82375aa - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hf3d73184efc070c1
[INFO] [stdout]                                at /rustc/b7dc83a3f6ca9746fb3d121761c3605477b77d90/src/liballoc/boxed.rs:1076
[INFO] [stdout]   37:     0x5597d82375aa - std::sys::unix::thread::Thread::new::thread_start::hb9eb749d91dfe8e2
[INFO] [stdout]                                at src/libstd/sys/unix/thread.rs:87
[INFO] [stdout]   38:     0x7fa66d6eb609 - start_thread
[INFO] [stdout]   39:     0x7fa66d5f7103 - __clone
[INFO] [stdout]   40:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test::test_image_small
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--bin raster-retrace'
[INFO] running `"docker" "inspect" "f780bd2dfc227502c9036cc9fc1120f72ab1d06f7978afa1671c3cb88a571a8a"`
[INFO] running `"docker" "rm" "-f" "f780bd2dfc227502c9036cc9fc1120f72ab1d06f7978afa1671c3cb88a571a8a"`
[INFO] [stdout] f780bd2dfc227502c9036cc9fc1120f72ab1d06f7978afa1671c3cb88a571a8a