With rustc 2015-03-28 nightly, error: slice pattern syntax experimental

[andersk]

rust-lang/rust#23794 put slice patterns behind a feature gate, so image no longer builds.

$ rustc --version
rustc 1.0.0-dev (built 2015-03-28)
$ cargo build
   Compiling image v0.3.1 (file:///home/anders/rust/image)
src/math/nq.rs:139:13: 139:25 error: slice pattern syntax is experimental
src/math/nq.rs:139             [r, g, b, a] => {
                               ^~~~~~~~~~~~
src/math/nq.rs:139:25: 139:25 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/math/nq.rs:154:13: 154:25 error: slice pattern syntax is experimental
src/math/nq.rs:154             [r, g, b, a] => {
                               ^~~~~~~~~~~~
src/math/nq.rs:154:25: 154:25 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/imageops/colorops.rs:138:19: 138:25 error: slice pattern syntax is experimental
src/imageops/colorops.rs:138         let &Luma([luma]) = color;
                                               ^~~~~~
src/imageops/colorops.rs:138:25: 138:25 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/imageops/colorops.rs:149:23: 149:37 error: slice pattern syntax is experimental
src/imageops/colorops.rs:149         let &mut Luma([ref mut luma]) = color;
                                                   ^~~~~~~~~~~~~~
src/imageops/colorops.rs:149:37: 149:37 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/tiff/decoder.rs:423:14: 423:29 error: slice pattern syntax is experimental
src/tiff/decoder.rs:423             ([ 8,  8,  8, 8],  PhotometricInterpretation::RGB) => Ok(ColorType::RGBA(8)),
                                     ^~~~~~~~~~~~~~~
src/tiff/decoder.rs:423:29: 423:29 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/tiff/decoder.rs:424:14: 424:26 error: slice pattern syntax is experimental
src/tiff/decoder.rs:424             ([ 8,  8,  8],     PhotometricInterpretation::RGB) => Ok(ColorType::RGB(8)),
                                     ^~~~~~~~~~~~
src/tiff/decoder.rs:424:26: 424:26 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/tiff/decoder.rs:425:14: 425:30 error: slice pattern syntax is experimental
src/tiff/decoder.rs:425             ([16, 16, 16, 16], PhotometricInterpretation::RGB) => Ok(ColorType::RGBA(16)),
                                     ^~~~~~~~~~~~~~~~
src/tiff/decoder.rs:425:30: 425:30 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/tiff/decoder.rs:426:14: 426:26 error: slice pattern syntax is experimental
src/tiff/decoder.rs:426             ([16, 16, 16],     PhotometricInterpretation::RGB) => Ok(ColorType::RGB(16)),
                                     ^~~~~~~~~~~~
src/tiff/decoder.rs:426:26: 426:26 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/tiff/decoder.rs:427:14: 427:18 error: slice pattern syntax is experimental
src/tiff/decoder.rs:427             ([ n], PhotometricInterpretation::BlackIsZero)
                                     ^~~~
src/tiff/decoder.rs:427:18: 427:18 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/tiff/decoder.rs:428:15: 428:19 error: slice pattern syntax is experimental
src/tiff/decoder.rs:428             |([ n], PhotometricInterpretation::WhiteIsZero) => Ok(ColorType::Gray(n)),
                                      ^~~~
src/tiff/decoder.rs:428:19: 428:19 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/color.rs:395:24: 395:39 error: slice pattern syntax is experimental
src/color.rs:395         let &mut LumaA([bg_luma, bg_a]) = self;
                                        ^~~~~~~~~~~~~~~
src/color.rs:395:39: 395:39 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/color.rs:396:20: 396:35 error: slice pattern syntax is experimental
src/color.rs:396         let &LumaA([fg_luma, fg_a]) = other;
                                    ^~~~~~~~~~~~~~~
src/color.rs:396:35: 396:35 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/color.rs:427:23: 427:47 error: slice pattern syntax is experimental
src/color.rs:427         let &mut Rgba([bg_r, bg_g, bg_b, bg_a]) = self;
                                       ^~~~~~~~~~~~~~~~~~~~~~~~
src/color.rs:427:47: 427:47 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/color.rs:428:19: 428:43 error: slice pattern syntax is experimental
src/color.rs:428         let &Rgba([fg_r, fg_g, fg_b, fg_a]) = other;
                                   ^~~~~~~~~~~~~~~~~~~~~~~~
src/color.rs:428:43: 428:43 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/color.rs:469:24: 469:30 error: slice pattern syntax is experimental
src/color.rs:469         let &mut LumaA([l, a]) = self;
                                        ^~~~~~
src/color.rs:469:30: 469:30 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/color.rs:479:23: 479:26 error: slice pattern syntax is experimental
src/color.rs:479         let &mut Luma([l]) = self;
                                       ^~~
src/color.rs:479:26: 479:26 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/color.rs:490:23: 490:35 error: slice pattern syntax is experimental
src/color.rs:490         let &mut Rgba([r, g, b, a]) = self;
                                       ^~~~~~~~~~~~
src/color.rs:490:35: 490:35 help: add #![feature(slice_patterns)] to the crate attributes to enable
src/color.rs:500:22: 500:31 error: slice pattern syntax is experimental
src/color.rs:500         let &mut Rgb([r, g, b]) = self;
                                      ^~~~~~~~~
src/color.rs:500:31: 500:31 help: add #![feature(slice_patterns)] to the crate attributes to enable
error: aborting due to 18 previous errors
Could not compile `image`.

[andersk]

See also PSA: Feature staging will be fully activated in the next nightly.