[INFO] fetching crate exoquant 0.2.0...
[INFO] checking exoquant-0.2.0 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate exoquant 0.2.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate exoquant 0.2.0 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate exoquant 0.2.0
[INFO] finished tweaking crates.io crate exoquant 0.2.0
[INFO] tweaked toml for crates.io crate exoquant 0.2.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8223e136e4f89c46595b67204e4c9ede66d5d6938f904ad89ec9e814acb50a9
[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" "d8223e136e4f89c46595b67204e4c9ede66d5d6938f904ad89ec9e814acb50a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8223e136e4f89c46595b67204e4c9ede66d5d6938f904ad89ec9e814acb50a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8223e136e4f89c46595b67204e4c9ede66d5d6938f904ad89ec9e814acb50a9", kill_on_drop: false }`
[INFO] [stdout] d8223e136e4f89c46595b67204e4c9ede66d5d6938f904ad89ec9e814acb50a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a00388a52901f6567f80e68f5563e9a034a90a2e04d635d2969cc31ca51fc51
[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" "7a00388a52901f6567f80e68f5563e9a034a90a2e04d635d2969cc31ca51fc51", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]     Checking bytemuck v1.5.1
[INFO] [stderr]    Compiling lodepng v0.8.1
[INFO] [stderr]     Checking c_vec v1.0.12
[INFO] [stderr]     Checking exoquant v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/histogram.rs:53:48
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn to_color_counts(&self, colorspace: &ColorSpace) -> Vec<ColorCount> {
[INFO] [stdout]    |                                                ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[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/histogram.rs:66:38
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn iter<'a>(&'a self) -> Box<Iterator<Item = (&Color, &usize)> + 'a> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (&Color, &usize)> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/quantizer.rs:211:39
[INFO] [stdout]     |
[INFO] [stdout] 211 |     pub fn optimize(self, optimizer: &Optimizer, num_iterations: usize) -> Quantizer {
[INFO] [stdout]     |                                       ^^^^^^^^^ help: use `dyn`: `dyn Optimizer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/remapper.rs:73:38
[INFO] [stdout]    |
[INFO] [stdout] 73 |                           image: Box<Iterator<Item = Color> + 'b>,
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Color> + 'b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/remapper.rs:75:34
[INFO] [stdout]    |
[INFO] [stdout] 75 |                           -> Box<Iterator<Item = u8> + 'b> {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = u8> + 'b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/remapper.rs:87:44
[INFO] [stdout]    |
[INFO] [stdout] 87 | ...                   image: Box<Iterator<Item = Color> + 'b>,
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Color> + 'b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/remapper.rs:89:40
[INFO] [stdout]    |
[INFO] [stdout] 89 | ...                   -> Box<Iterator<Item = usize> + 'b> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/optimizer.rs:27:38
[INFO] [stdout]    |
[INFO] [stdout] 27 |                         colorspace: &ColorSpace,
[INFO] [stdout]    |                                      ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:13:29
[INFO] [stdout]    |
[INFO] [stdout] 13 |                  image: Box<Iterator<Item = Colorf> + 'a>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Colorf> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:16:34
[INFO] [stdout]    |
[INFO] [stdout] 16 |                  colorspace: &'a ColorSpace)
[INFO] [stdout]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:17:25
[INFO] [stdout]    |
[INFO] [stdout] 17 |                  -> Box<Iterator<Item = usize> + 'a>;
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:25:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |                  image: Box<Iterator<Item = Colorf> + 'a>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Colorf> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:28:25
[INFO] [stdout]    |
[INFO] [stdout] 28 |                  _: &'a ColorSpace)
[INFO] [stdout]    |                         ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |                  -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:46:29
[INFO] [stdout]    |
[INFO] [stdout] 46 |                  image: Box<Iterator<Item = Colorf> + 'a>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Colorf> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:49:25
[INFO] [stdout]    |
[INFO] [stdout] 49 |                  _: &'a ColorSpace)
[INFO] [stdout]    |                         ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |                  -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:85:29
[INFO] [stdout]    |
[INFO] [stdout] 85 |                  image: Box<Iterator<Item = Colorf> + 'a>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Colorf> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:88:34
[INFO] [stdout]    |
[INFO] [stdout] 88 |                  colorspace: &'a ColorSpace)
[INFO] [stdout]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |                  -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rgb v0.8.25
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/histogram.rs:53:48
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn to_color_counts(&self, colorspace: &ColorSpace) -> Vec<ColorCount> {
[INFO] [stdout]    |                                                ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[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/histogram.rs:66:38
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn iter<'a>(&'a self) -> Box<Iterator<Item = (&Color, &usize)> + 'a> {
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = (&Color, &usize)> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/quantizer.rs:211:39
[INFO] [stdout]     |
[INFO] [stdout] 211 |     pub fn optimize(self, optimizer: &Optimizer, num_iterations: usize) -> Quantizer {
[INFO] [stdout]     |                                       ^^^^^^^^^ help: use `dyn`: `dyn Optimizer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/remapper.rs:73:38
[INFO] [stdout]    |
[INFO] [stdout] 73 |                           image: Box<Iterator<Item = Color> + 'b>,
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Color> + 'b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/remapper.rs:75:34
[INFO] [stdout]    |
[INFO] [stdout] 75 |                           -> Box<Iterator<Item = u8> + 'b> {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = u8> + 'b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/remapper.rs:87:44
[INFO] [stdout]    |
[INFO] [stdout] 87 | ...                   image: Box<Iterator<Item = Color> + 'b>,
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Color> + 'b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/remapper.rs:89:40
[INFO] [stdout]    |
[INFO] [stdout] 89 | ...                   -> Box<Iterator<Item = usize> + 'b> {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/optimizer.rs:27:38
[INFO] [stdout]    |
[INFO] [stdout] 27 |                         colorspace: &ColorSpace,
[INFO] [stdout]    |                                      ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:13:29
[INFO] [stdout]    |
[INFO] [stdout] 13 |                  image: Box<Iterator<Item = Colorf> + 'a>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Colorf> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:16:34
[INFO] [stdout]    |
[INFO] [stdout] 16 |                  colorspace: &'a ColorSpace)
[INFO] [stdout]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:17:25
[INFO] [stdout]    |
[INFO] [stdout] 17 |                  -> Box<Iterator<Item = usize> + 'a>;
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:25:29
[INFO] [stdout]    |
[INFO] [stdout] 25 |                  image: Box<Iterator<Item = Colorf> + 'a>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Colorf> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:28:25
[INFO] [stdout]    |
[INFO] [stdout] 28 |                  _: &'a ColorSpace)
[INFO] [stdout]    |                         ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |                  -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:46:29
[INFO] [stdout]    |
[INFO] [stdout] 46 |                  image: Box<Iterator<Item = Colorf> + 'a>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Colorf> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:49:25
[INFO] [stdout]    |
[INFO] [stdout] 49 |                  _: &'a ColorSpace)
[INFO] [stdout]    |                         ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:50:25
[INFO] [stdout]    |
[INFO] [stdout] 50 |                  -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:85:29
[INFO] [stdout]    |
[INFO] [stdout] 85 |                  image: Box<Iterator<Item = Colorf> + 'a>,
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Colorf> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:88:34
[INFO] [stdout]    |
[INFO] [stdout] 88 |                  colorspace: &'a ColorSpace)
[INFO] [stdout]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn ColorSpace`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/ditherer.rs:89:25
[INFO] [stdout]    |
[INFO] [stdout] 89 |                  -> Box<Iterator<Item = usize> + 'a> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = usize> + 'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.61s
[INFO] running `Command { std: "docker" "inspect" "7a00388a52901f6567f80e68f5563e9a034a90a2e04d635d2969cc31ca51fc51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a00388a52901f6567f80e68f5563e9a034a90a2e04d635d2969cc31ca51fc51", kill_on_drop: false }`
[INFO] [stdout] 7a00388a52901f6567f80e68f5563e9a034a90a2e04d635d2969cc31ca51fc51