Update to the latest Cargo

Found as part of rust-lang/rust#52919

Author: alexcrichton

Cargo.lock

@@ -13,7 +13,7 @@ categories = ["development-tools"]
 build = "build.rs"
 
 [dependencies]
-cargo = { git = "https://github.com/rust-lang/cargo", rev = "1ec8c70d00afa77deafb8fbd4c1d07fb68b2b556" }
+cargo = { git = "https://github.com/rust-lang/cargo", rev = "0b80061cacce00dabe8ca25448517d4ac27de2ab" }
 cargo_metadata = "0.5.2"
 clippy_lints = { git = "https://github.com/rust-lang-nursery/rust-clippy", rev = "1f656173723dce4efc3fc90ff5763a2186ec9089", optional = true }
 env_logger = "0.5"

Cargo.toml

@@ -168,7 +168,7 @@ fn run_cargo(
 
     let spec = Packages::from_flags(all, Vec::new(), packages)?;
 
-    let pkg_names = spec.into_package_id_specs(&ws)?.iter()
+    let pkg_names = spec.to_package_id_specs(&ws)?.iter()
         .map(|pkg_spec| pkg_spec.name().to_owned())
         .collect();
     trace!("Specified packages to be built by Cargo: {:#?}", pkg_names);
@@ -226,7 +226,8 @@ fn run_cargo(
         reached_primary.clone(),
     );
 
-    match compile_with_exec(&ws, &compile_opts, Arc::new(exec)) {
+    let exec = Arc::new(exec) as Arc<dyn Executor>;
+    match compile_with_exec(&ws, &compile_opts, &exec) {
         Ok(_) => {
             trace!(
                 "Created build plan after Cargo compilation routine: {:?}",