Disable clock_getres on redox

.travis.yml

@@ -102,9 +102,10 @@ matrix:
       name: redox
       script:
         - curl --proto '=https' --tlsv1.2 -sSf --output rustup.sh https://sh.rustup.rs
-        - sh rustup.sh -y --profile=minimal --default-toolchain 1.36.0 --target x86_64-unknown-redox
+        # if stuff breaks, change nightly to the date in the toolchain_* directory at https://static.redox-os.org
+        - sh rustup.sh -y --profile=minimal --default-toolchain nightly-2020-08-04 --target x86_64-unknown-redox
         - . $HOME/.cargo/env
-        - cargo build --all-targets
+        - cargo build --target x86_64-unknown-redox --all-targets
 
 before_install: set -e
 

CHANGELOG.md

@@ -8,6 +8,8 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 - Added `mremap` (#[1306](https://github.com/nix-rust/nix/pull/1306))
 
 ### Fixed
+- Fixed compilation on Redox
+  (#[1327](https://github.com/nix-rust/nix/pull/1327))
 ### Changed
 ### Removed
 

src/time.rs

@@ -37,6 +37,7 @@ impl ClockId {
     }
 
     /// Returns resolution of the clock id
+    #[cfg(not(target_os = "redox"))]
     pub fn res(self) -> Result<TimeSpec> {
         clock_getres(self)
     }
@@ -204,6 +205,7 @@ impl std::fmt::Display for ClockId {
 
 /// Get the resolution of the specified clock, (see
 /// [clock_getres(2)](https://pubs.opengroup.org/onlinepubs/7908799/xsh/clock_getres.html)).
+#[cfg(not(target_os = "redox"))]
 pub fn clock_getres(clock_id: ClockId) -> Result<TimeSpec> {
     let mut c_time: MaybeUninit<libc::timespec> = MaybeUninit::uninit();
     let ret = unsafe { libc::clock_getres(clock_id.as_raw(), c_time.as_mut_ptr()) };