Auto merge of #43246 - frewsxcv:rollup, r=frewsxcv

Rollup of 8 pull requests

- Successful merges: #43074, #43145, #43159, #43202, #43222, #43228, #43229, #43240
- Failed merges:

3 files changed, 14 insertions, 5 deletions

diff --git a/src/libstd/sys/redox/backtrace.rs b/src/libstd/sys/redox/backtrace.rs
index 961148fb6b4..6cafe3e69ba 100644
--- a/src/libstd/sys/redox/backtrace.rs
+++ b/src/libstd/sys/redox/backtrace.rs
@@ -8,16 +8,25 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use libc;
 use io;
 use sys_common::backtrace::Frame;
 
-pub use sys_common::gnu::libbacktrace::*;
+pub use sys_common::gnu::libbacktrace::{foreach_symbol_fileline, resolve_symname};
 pub struct BacktraceContext;
 
 #[inline(never)]
-pub fn unwind_backtrace(frames: &mut [Frame])
+pub fn unwind_backtrace(_frames: &mut [Frame])
     -> io::Result<(usize, BacktraceContext)>
 {
     Ok((0, BacktraceContext))
 }
+
+pub mod gnu {
+    use io;
+    use fs;
+    use libc::c_char;
+
+    pub fn get_executable_filename() -> io::Result<(Vec<c_char>, fs::File)> {
+        Err(io::Error::new(io::ErrorKind::Other, "Not implemented"))
+    }
+}
diff --git a/src/libstd/sys/redox/net/tcp.rs b/src/libstd/sys/redox/net/tcp.rs
index 5d1067e4039..98ec3aa3e29 100644
--- a/src/libstd/sys/redox/net/tcp.rs
+++ b/src/libstd/sys/redox/net/tcp.rs
@@ -32,7 +32,7 @@ impl TcpStream {
         Ok(TcpStream(File::open(&Path::new(path.as_str()), &options)?))
     }
 
-    pub fn connect_timeout(_addr: &SocketAddr, _timeout: Duration) -> Result<()> {
+    pub fn connect_timeout(_addr: &SocketAddr, _timeout: Duration) -> Result<TcpStream> {
         Err(Error::new(ErrorKind::Other, "TcpStream::connect_timeout not implemented"))
     }
 
diff --git a/src/libstd/sys/windows/ext/fs.rs b/src/libstd/sys/windows/ext/fs.rs
index 67348a00494..a1c63e33588 100644
--- a/src/libstd/sys/windows/ext/fs.rs
+++ b/src/libstd/sys/windows/ext/fs.rs
@@ -477,7 +477,7 @@ pub fn symlink_file<P: AsRef<Path>, Q: AsRef<Path>>(src: P, dst: Q)
 /// use std::os::windows::fs;
 ///
 /// # fn foo() -> std::io::Result<()> {
-/// fs::symlink_file("a", "b")?;
+/// fs::symlink_dir("a", "b")?;
 /// # Ok(())
 /// # }
 /// ```