Rollup merge of #141019 - ehuss:android-doctest-xcompile, r=Mark-Simulacrum

Update std doctests for android

This updates some doctests that fail to run on android. We will soon be supporting cross-compiled doctests, and the `arm-android` job fails to run these tests.

In summary:
- Android re-exports some traits from linux under a different path.
- Android doesn't seem to have common unix utilities like `true`, `false`, or `whoami`, so these are disabled.

1 files changed, 6 insertions, 0 deletions

diff --git a/library/std/src/os/net/linux_ext/addr.rs b/library/std/src/os/net/linux_ext/addr.rs
index aed772056e1..41009c0e284 100644
--- a/library/std/src/os/net/linux_ext/addr.rs
+++ b/library/std/src/os/net/linux_ext/addr.rs
@@ -23,7 +23,10 @@ pub trait SocketAddrExt: Sealed {
     ///
     /// ```no_run
     /// use std::os::unix::net::{UnixListener, SocketAddr};
+    /// #[cfg(target_os = "linux")]
     /// use std::os::linux::net::SocketAddrExt;
+    /// #[cfg(target_os = "android")]
+    /// use std::os::android::net::SocketAddrExt;
     ///
     /// fn main() -> std::io::Result<()> {
     ///     let addr = SocketAddr::from_abstract_name(b"hidden")?;
@@ -48,7 +51,10 @@ pub trait SocketAddrExt: Sealed {
     ///
     /// ```no_run
     /// use std::os::unix::net::{UnixListener, SocketAddr};
+    /// #[cfg(target_os = "linux")]
     /// use std::os::linux::net::SocketAddrExt;
+    /// #[cfg(target_os = "android")]
+    /// use std::os::android::net::SocketAddrExt;
     ///
     /// fn main() -> std::io::Result<()> {
     ///     let name = b"hidden";