workspace: move crates under crates

utils/src/pipe.rs

@@ -1,32 +0,0 @@
-use {
-    crate::oserror::{OsError, OsErrorExt},
-    uapi::{OwnedFd, c, pipe2},
-};
-
-pub struct Pipe<L, R> {
-    pub read: L,
-    pub write: R,
-}
-
-pub fn pipe() -> Result<Pipe<OwnedFd, OwnedFd>, OsError> {
-    let (read, write) = pipe2(c::O_CLOEXEC).to_os_error()?;
-    Ok(Pipe { read, write })
-}
-
-impl<L, R> Pipe<L, R> {
-    #[allow(dead_code)]
-    pub fn map_read<Lprime>(self, map: impl FnOnce(L) -> Lprime) -> Pipe<Lprime, R> {
-        Pipe {
-            read: map(self.read),
-            write: self.write,
-        }
-    }
-
-    #[allow(dead_code)]
-    pub fn map_write<Rprime>(self, map: impl FnOnce(R) -> Rprime) -> Pipe<L, Rprime> {
-        Pipe {
-            read: self.read,
-            write: map(self.write),
-        }
-    }
-}