Make Android a Tier 2 target

.travis.yml

@@ -23,9 +23,9 @@ matrix:
     - env: TARGET=armv7-linux-androideabi DISABLE_TESTS=1
       rust: 1.13.0
     - env: TARGET=i686-linux-android DISABLE_TESTS=1
-      rust: 1.13.0
+      rust: 1.18.0
     - env: TARGET=x86_64-linux-android DISABLE_TESTS=1
-      rust: 1.13.0
+      rust: 1.18.0
 
     # iOS
     - env: TARGET=aarch64-apple-ios DISABLE_TESTS=1
@@ -104,18 +104,6 @@ matrix:
       rust: nightly
 
   allow_failures:
-    # Android (in the process of fixing these, so they're allowed to fail for now)
-    - env: TARGET=aarch64-linux-android DISABLE_TESTS=1
-      rust: 1.13.0
-    - env: TARGET=arm-linux-androideabi DISABLE_TESTS=1
-      rust: 1.13.0
-    - env: TARGET=armv7-linux-androideabi DISABLE_TESTS=1
-      rust: 1.13.0
-    - env: TARGET=i686-linux-android DISABLE_TESTS=1
-      rust: 1.13.0
-    - env: TARGET=x86_64-linux-android DISABLE_TESTS=1
-      rust: 1.13.0
-
     # iOS is still being worked on, so for now don't block on compilation failures
     - env: TARGET=aarch64-apple-ios DISABLE_TESTS=1
       rust: 1.13.0

CHANGELOG.md

@@ -35,6 +35,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - Introduced wrapper types for gid_t, pid_t, and uid_t as Gid, Pid, and Uid
   respectively. Various functions have been changed to use these new types as
   arguments. ([#629](https://github.com/nix-rust/nix/pull/629))
+- Promoted all Android targets to Tier 2 support
 
 ### Removed
 - Removed io::Error from nix::Error and conversion from nix::Error to Errno

README.md

@@ -46,7 +46,8 @@ limitations. Support for platforms is split into two tiers:
              *do not* block the inclusion of new code. Testing may be run, but
              failures in tests don't block the inclusion of new code.
 
-The following targets are all supported by nix on Rust 1.13.0 or newer:
+The following targets are all supported by nix on Rust 1.13.0 or newer (unless
+otherwise noted):
 
 Tier 1:
   * i686-unknown-linux-gnu
@@ -68,18 +69,18 @@ Tier 1:
 Tier 2:
   * i686-unknown-freebsd
   * x86_64-unknown-netbsd
+  * aarch64-linux-android
+  * arm-linux-androideabi
+  * armv7-linux-androideabi
+  * i686-linux-android (requires Rust >= 1.18)
+  * x86_64-linux-android (requires Rust >= 1.18)
 
 Tier 3:
   * aarch64-apple-ios
-  * aarch64-linux-android
-  * arm-linux-androideabi
   * armv7-apple-ios
-  * armv7-linux-androideabi
   * armv7s-apple-ios
   * i386-apple-ios
-  * i686-linux-android
   * x86_64-apple-ios
-  * x86_64-linux-android
 
 ## Usage