WIP: Bump tokio to 0.3 and mio to 0.7

This is currently pending on tokio-rs/tokio#2903
in order to support registering a fd as a tokio Source.

conch-runtime-tests/Cargo.toml

@@ -12,5 +12,5 @@ futures-core = "0.3"
 futures-util = "0.3"
 tempfile = "3.1"
 thiserror = "1"
-tokio = { version = "0.2", features = ["full"] }
+tokio = { version = "0.3", features = ["full"] }
 void = "1"

conch-runtime/Cargo.toml

@@ -26,12 +26,12 @@ futures-util = "0.3"
 glob        = "0.3"
 lazy_static = "1"
 thiserror = "1"
-tokio = { version = "0.2", features = ["fs", "io-util", "process"] }
+tokio = { version = "0.3", features = ["fs", "io-util", "process", "rt"] }
 void = "1"
 
 [target.'cfg(unix)'.dependencies]
 libc = "0.2"
-mio  = "0.6"
+mio  = "0.7"
 
 [target.'cfg(windows)'.dependencies.winapi]
 version = "0.3.4"
@@ -48,7 +48,7 @@ features = [
 
 [dev-dependencies]
 owned_chars = "0.3"
-tokio = { version = "0.2", features = ["macros"] }
+tokio = { version = "0.3", features = ["macros"] }
 
 [badges]
 travis-ci = { repository = "ipetkov/conch-runtime" }

conch-runtime/src/env/executable.rs

@@ -100,7 +100,7 @@ impl ExecutableEnvironment for TokioExecEnv {
             .map_err(|err| map_io_err(err, name.to_string_lossy().into_owned()))?;
 
         Ok(Box::pin(async move {
-            child.await.map(ExitStatus::from).unwrap_or(EXIT_ERROR)
+            child.wait().await.map(ExitStatus::from).unwrap_or(EXIT_ERROR)
         }))
     }
 }

conch-runtime/src/sys/unix/io.rs

@@ -49,29 +49,27 @@ impl From<File> for FileDesc {
     }
 }
 
-impl mio::Evented for FileDesc {
+impl mio::event::Source for FileDesc {
     fn register(
-        &self,
-        poll: &mio::Poll,
+        &mut self,
+        registry: &mio::Registry,
         token: mio::Token,
-        interest: mio::Ready,
-        opts: mio::PollOpt,
+        interests: mio::Interest,
     ) -> Result<()> {
-        mio::unix::EventedFd(&self.as_raw_fd()).register(poll, token, interest, opts)
+        mio::unix::SourceFd(&self.as_raw_fd()).register(registry, token, interests)
     }
 
     fn reregister(
-        &self,
-        poll: &mio::Poll,
+        &mut self,
+        registry: &mio::Registry,
         token: mio::Token,
-        interest: mio::Ready,
-        opts: mio::PollOpt,
+        interests: mio::Interest,
     ) -> Result<()> {
-        mio::unix::EventedFd(&self.as_raw_fd()).reregister(poll, token, interest, opts)
+        mio::unix::SourceFd(&self.as_raw_fd()).reregister(registry, token, interests)
     }
 
-    fn deregister(&self, poll: &mio::Poll) -> Result<()> {
-        mio::unix::EventedFd(&self.as_raw_fd()).deregister(poll)
+    fn deregister(&mut self, registry: &mio::Registry) -> Result<()> {
+        mio::unix::SourceFd(&self.as_raw_fd()).deregister(registry)
     }
 }