Redefine ErrorKind::Other and stop using it in std.

library/std/src/sys/unix/fs.rs

@@ -358,7 +358,7 @@ impl FileAttr {
                     }))
                 } else {
                     Err(io::Error::new_const(
-                        io::ErrorKind::Other,
+                        io::ErrorKind::Unknown,
                         &"creation time is not available for the filesystem",
                     ))
                 };

library/std/src/sys/unix/mod.rs

@@ -155,7 +155,7 @@ pub fn decode_error_kind(errno: i32) -> ErrorKind {
         // clause
         x if x == libc::EAGAIN || x == libc::EWOULDBLOCK => ErrorKind::WouldBlock,
 
-        _ => ErrorKind::Other,
+        _ => ErrorKind::Unknown,
     }
 }
 

library/std/src/sys/unix/net.rs

@@ -38,7 +38,7 @@ pub fn cvt_gai(err: c_int) -> io::Result<()> {
         str::from_utf8(CStr::from_ptr(libc::gai_strerror(err)).to_bytes()).unwrap().to_owned()
     };
     Err(io::Error::new(
-        io::ErrorKind::Other,
+        io::ErrorKind::Unknown,
         &format!("failed to lookup address information: {}", detail)[..],
     ))
 }
@@ -178,7 +178,7 @@ impl Socket {
                     if pollfd.revents & libc::POLLHUP != 0 {
                         let e = self.take_error()?.unwrap_or_else(|| {
                             io::Error::new_const(
-                                io::ErrorKind::Other,
+                                io::ErrorKind::Unknown,
                                 &"no error set after POLLHUP",
                             )
                         });

library/std/src/sys/unix/os.rs

@@ -280,7 +280,7 @@ pub fn current_exe() -> io::Result<PathBuf> {
             ))?;
             if path_len <= 1 {
                 return Err(io::Error::new_const(
-                    io::ErrorKind::Other,
+                    io::ErrorKind::Unknown,
                     &"KERN_PROC_PATHNAME sysctl returned zero-length string",
                 ));
             }
@@ -303,7 +303,7 @@ pub fn current_exe() -> io::Result<PathBuf> {
             return crate::fs::read_link(curproc_exe);
         }
         Err(io::Error::new_const(
-            io::ErrorKind::Other,
+            io::ErrorKind::Unknown,
             &"/proc/curproc/exe doesn't point to regular file.",
         ))
     }
@@ -321,7 +321,7 @@ pub fn current_exe() -> io::Result<PathBuf> {
         cvt(libc::sysctl(mib, 4, argv.as_mut_ptr() as *mut _, &mut argv_len, ptr::null_mut(), 0))?;
         argv.set_len(argv_len as usize);
         if argv[0].is_null() {
-            return Err(io::Error::new_const(io::ErrorKind::Other, &"no current exe available"));
+            return Err(io::Error::new_const(io::ErrorKind::Unknown, &"no current exe available"));
         }
         let argv0 = CStr::from_ptr(argv[0]).to_bytes();
         if argv0[0] == b'.' || argv0.iter().any(|b| *b == b'/') {
@@ -336,7 +336,7 @@ pub fn current_exe() -> io::Result<PathBuf> {
 pub fn current_exe() -> io::Result<PathBuf> {
     match crate::fs::read_link("/proc/self/exe") {
         Err(ref e) if e.kind() == io::ErrorKind::NotFound => Err(io::Error::new_const(
-            io::ErrorKind::Other,
+            io::ErrorKind::Unknown,
             &"no /proc/self/exe available. Is /proc mounted?",
         )),
         other => other,
@@ -423,7 +423,7 @@ pub fn current_exe() -> io::Result<PathBuf> {
             _get_next_image_info(0, &mut cookie, &mut info, mem::size_of::<image_info>() as i32);
         if result != 0 {
             use crate::io::ErrorKind;
-            Err(io::Error::new_const(ErrorKind::Other, &"Error getting executable path"))
+            Err(io::Error::new_const(ErrorKind::Unknown, &"Error getting executable path"))
         } else {
             let name = CStr::from_ptr(info.name.as_ptr()).to_bytes();
             Ok(PathBuf::from(OsStr::from_bytes(name)))