Merge pull request #66 from shssoichiro/upgrade-deps-20170614

Upgrade dependencies

.travis.yml

@@ -11,7 +11,7 @@ matrix:
       env: TARGET=x86_64-apple-darwin
       cache: cargo
     - os: linux
-      rust: 1.13.0
+      rust: 1.17.0
       env: TARGET=x86_64-unknown-linux-gnu
       cache: cargo
     - os: linux

CHANGELOG.md

@@ -1,3 +1,8 @@
+**Version 0.16.0**
+ - [SEMVER_MAJOR] Bump minimum rustc version to 1.17.0
+ - Bump `image` to 0.14
+ - Bump `rayon` to 0.8
+
 **Version 0.15.2**
  - Bump `image` to 0.13 ([#65](https://github.com/shssoichiro/oxipng/pull/65))
  - Bump `rayon` to 0.7

Cargo.lock

@@ -1,20 +1,20 @@
 [root]
 name = "oxipng"
-version = "0.15.2"
+version = "0.16.0"
 dependencies = [
- "bit-vec 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bit-vec 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "clap 2.23.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clap 2.24.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy 0.0.129 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy 0.0.139 (registry+https://github.com/rust-lang/crates.io-index)",
  "crc 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "image 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "image 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "miniz-sys 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "num_cpus 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "rayon 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "zopfli 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "zopfli 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -46,18 +46,13 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "bit-vec"
-version = "0.4.3"
+version = "0.4.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "bitflags"
-version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -65,6 +60,11 @@ name = "bitflags"
 version = "0.8.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "bitflags"
+version = "0.9.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "byteorder"
 version = "0.5.3"
@@ -77,17 +77,17 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "cargo_metadata"
-version = "0.1.2"
+version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 0.9.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_derive 0.9.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 0.9.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "clap"
-version = "2.23.3"
+version = "2.24.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "ansi_term 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -95,33 +95,45 @@ dependencies = [
  "bitflags 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "strsim 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "term_size 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-segmentation 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-segmentation 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-width 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "vec_map 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vec_map 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "clippy"
-version = "0.0.129"
+version = "0.0.139"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "cargo_metadata 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cargo_metadata 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "clippy_lints 0.0.129 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clippy_lints 0.0.139 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "clippy_lints"
-version = "0.0.129"
+version = "0.0.139"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "matches 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "matches 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "quine-mc_cluskey 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "toml 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "toml 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-normalization 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "coco"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "either 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "scopeguard 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "crc"
 version = "1.4.0"
@@ -132,18 +144,13 @@ dependencies = [
 
 [[package]]
 name = "deflate"
-version = "0.7.9"
+version = "0.7.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "adler32 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "deque"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "dtoa"
 version = "0.4.1"
@@ -159,30 +166,30 @@ name = "enum_primitive"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-traits 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "futures"
-version = "0.1.13"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "gcc"
-version = "0.3.45"
+version = "0.3.51"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "image"
-version = "0.13.0"
+version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "byteorder 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "enum_primitive 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-iter 0.1.33 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-rational 0.1.36 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-rational 0.1.38 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "png 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "png 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -219,12 +226,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "libc"
-version = "0.2.22"
+version = "0.2.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "matches"
-version = "0.1.4"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -232,7 +239,7 @@ name = "memchr"
 version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -240,8 +247,8 @@ name = "miniz-sys"
 version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "gcc 0.3.45 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gcc 0.3.51 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -249,7 +256,7 @@ name = "num-integer"
 version = "0.1.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "num-traits 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -258,38 +265,38 @@ version = "0.1.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-integer 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num-rational"
-version = "0.1.36"
+version = "0.1.38"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "num-integer 0.1.34 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "num-traits"
-version = "0.1.37"
+version = "0.1.39"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "num_cpus"
-version = "1.4.0"
+version = "1.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "png"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "deflate 0.7.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "deflate 0.7.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "inflate 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-iter 0.1.33 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -309,38 +316,38 @@ name = "rand"
 version = "0.3.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rayon"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rayon-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rayon-core 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rayon-core"
-version = "1.0.0"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "deque 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "coco 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "futures 0.1.13 (registry+https://github.com/rust-lang/crates.io-index)",
+ "futures 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
- "num_cpus 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num_cpus 1.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "regex"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "aho-corasick 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "regex-syntax 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "regex-syntax 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "simd 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "thread_local 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "utf8-ranges 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -348,12 +355,12 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.4.0"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
-name = "rustc-serialize"
+name = "scopeguard"
-version = "0.3.24"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -371,36 +378,37 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde"
-version = "0.9.15"
+version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
-name = "serde_codegen_internals"
+name = "serde_derive"
-version = "0.14.2"
+version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
+ "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive_internals 0.15.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
-name = "serde_derive"
+name = "serde_derive_internals"
-version = "0.9.15"
+version = "0.15.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_codegen_internals 0.14.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "serde_json"
-version = "0.9.10"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "dtoa 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itoa 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "num-traits 0.1.37 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 0.9.15 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -437,17 +445,17 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "thread-id"
-version = "3.0.0"
+version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.23 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -455,18 +463,23 @@ name = "thread_local"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "thread-id 3.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "thread-id 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "unreachable 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "toml"
-version = "0.2.1"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "typed-arena"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "unicode-normalization"
 version = "0.1.4"
@@ -474,7 +487,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "unicode-segmentation"
-version = "1.1.0"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -502,7 +515,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "vec_map"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -522,12 +535,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "zopfli"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "adler32 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "crc 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "typed-arena 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [metadata]
@@ -536,69 +550,70 @@ dependencies = [
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Cargo.toml

@@ -8,7 +8,7 @@ homepage = "https://github.com/shssoichiro/oxipng"
 license = "MIT"
 name = "oxipng"
 repository = "https://github.com/shssoichiro/oxipng"
-version = "0.15.2"
+version = "0.16.0"
 
 [lib]
 name = "oxipng"
@@ -27,7 +27,7 @@ itertools = "^0.6.0"
 libc = "^0.2.4"
 miniz-sys = "^0.1.7"
 num_cpus = "^1.0.0"
-rayon = "^0.7.0"
+rayon = "^0.8.0"
 zopfli = "^0.3.4"
 
 [dependencies.clap]
@@ -41,7 +41,7 @@ version = ">=0.0.85"
 [dependencies.image]
 default-features = false
 features = ["png_codec"]
-version = "^0.13.0"
+version = "^0.14.0"
 
 [dependencies.regex]
 optional = true

README.md

@@ -27,7 +27,7 @@ cargo build --release
 cp target/release/oxipng /usr/local/bin
 ```
 
-The current minimum supported Rust version is **1.13.0**. Oxipng may compile on earlier versions of Rust,
+The current minimum supported Rust version is **1.17.0**. Oxipng may compile on earlier versions of Rust,
 but there is no guarantee.
 
 Oxipng follows Semantic Versioning.

src/colors.rs

@@ -18,9 +18,7 @@ pub enum ColorType {
 impl fmt::Display for ColorType {
     #[inline]
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f,
+        write!(f, "{}", match *self {
-               "{}",
-               match *self {
             ColorType::Grayscale => "Grayscale",
             ColorType::RGB => "RGB",
             ColorType::Indexed => "Indexed",
@@ -62,9 +60,7 @@ pub enum BitDepth {
 impl fmt::Display for BitDepth {
     #[inline]
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f,
+        write!(f, "{}", match *self {
-               "{}",
-               match *self {
             BitDepth::One => "1",
             BitDepth::Two => "2",
             BitDepth::Four => "4",

src/filters.rs

@@ -108,8 +108,8 @@ pub fn unfilter_line(filter: u8, bpp: usize, data: &[u8], last_line: &[u8]) -> V
                     match i.checked_sub(bpp) {
                         Some(x) => {
                             let b = unfiltered[x];
-                            unfiltered.push(byte.wrapping_add(((b as u16 + last_line[i] as u16) >>
+                            unfiltered
-                                                               1) as
+                                .push(byte.wrapping_add(((b as u16 + last_line[i] as u16) >> 1) as
                                                         u8));
                         }
                         None => {

src/interlace.rs

@@ -92,8 +92,8 @@ pub fn deinterlace_image(png: &mut PngData) {
     let bits_per_line = 8 + bits_per_pixel as usize * png.ihdr_data.width as usize;
     // Initialize each output line with a starting filter byte of 0
     // as well as some blank data
-    let mut lines: Vec<BitVec> =
+    let mut lines: Vec<BitVec> = vec![BitVec::from_elem(bits_per_line, false);
-        vec![BitVec::from_elem(bits_per_line, false); png.ihdr_data.height as usize];
+                                      png.ihdr_data.height as usize];
     let mut current_pass = 1;
     let mut pass_constants = interlaced_constants(current_pass);
     let mut current_y: usize = pass_constants.y_shift as usize;

src/lib.rs

@@ -538,8 +538,7 @@ fn optimize_png(png: &mut PngData,
                         deflate::deflate(filtered, trial.1, trial.2, trial.3, opts.window)
                     } else {
                         deflate::zopfli_deflate(filtered)
-                        }
+                    }.unwrap();
-                        .unwrap();
 
                     if opts.verbosity == Some(1) {
                         writeln!(&mut stderr(),
@@ -714,10 +713,7 @@ fn perform_strip(png: &mut png::PngData, opts: &Options) {
         Headers::Safe => {
             const PRESERVED_HEADERS: [&'static str; 9] = ["cHRM", "gAMA", "iCCP", "sBIT", "sRGB",
                                                           "bKGD", "hIST", "pHYs", "sPLT"];
-            let hdrs = png.aux_headers
+            let hdrs = png.aux_headers.keys().cloned().collect::<Vec<String>>();
-                .keys()
-                .cloned()
-                .collect::<Vec<String>>();
             for hdr in hdrs {
                 if !PRESERVED_HEADERS.contains(&hdr.as_ref()) {
                     png.aux_headers.remove(&hdr);

src/png.rs

@@ -307,12 +307,8 @@ impl PngData {
         let mut output = vec![0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A];
         // IHDR
         let mut ihdr_data = Vec::with_capacity(13);
-        ihdr_data
+        ihdr_data.write_u32::<BigEndian>(self.ihdr_data.width).ok();
-            .write_u32::<BigEndian>(self.ihdr_data.width)
+        ihdr_data.write_u32::<BigEndian>(self.ihdr_data.height).ok();
-            .ok();
-        ihdr_data
-            .write_u32::<BigEndian>(self.ihdr_data.height)
-            .ok();
         ihdr_data.write_u8(self.ihdr_data.bit_depth.as_u8()).ok();
         ihdr_data
             .write_u8(self.ihdr_data.color_type.png_header_code())
@@ -400,10 +396,8 @@ impl PngData {
                 0 | 1 | 2 | 3 | 4 => {
                     if last_pass == line.pass || filter <= 1 {
                         filtered.push(filter);
-                        filtered.extend_from_slice(&filter_line(filter,
+                        filtered
-                                                                bpp,
+                            .extend_from_slice(&filter_line(filter, bpp, &line.data, &last_line));
-                                                                &line.data,
-                                                                &last_line));
                     } else {
                         // Avoid vertical filtering on first line of each interlacing pass
                         filtered.push(0);
@@ -422,9 +416,7 @@ impl PngData {
                     let (best_filter, best_line) = trials
                         .iter()
                         .min_by_key(|x| {
-                                        x.1
+                            x.1.iter().fold(0u64, |acc, &x| {
-                                            .iter()
-                                            .fold(0u64, |acc, &x| {
                                 let signed = x as i8;
                                 acc + (signed as i16).abs() as u64
                             })