[src/lib/fuchsia] Stop passing threads = 1.

This is equivalent to omitting the number of threads.

Bug: 400988141

Change-Id: If080199419b043444da8a8b58ce77ecfcea5e550
Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/1224550
Fuchsia-Auto-Submit: Adam Perry <adamperry@google.com>
Owners-Override: Kevin Lindkvist <lindkvist@google.com>
Reviewed-by: Kevin Lindkvist <lindkvist@google.com>
Commit-Queue: Auto-Submit <auto-submit@fuchsia-infra.iam.gserviceaccount.com>
diff --git a/src/developer/ffx/lib/target/src/lib.rs b/src/developer/ffx/lib/target/src/lib.rs
index 96c4fb1..eeb8d51 100644
--- a/src/developer/ffx/lib/target/src/lib.rs
+++ b/src/developer/ffx/lib/target/src/lib.rs
@@ -584,7 +584,7 @@
         assert!(res.is_err());
     }
 
-    #[fuchsia::test(threads = 1)]
+    #[fuchsia::test]
     async fn test_get_empty_default_target() {
         let env = test_init().await.unwrap();
         // Just in case, we need to remove the env variables mentioned
diff --git a/src/sys/pkg/bin/system-update-checker/src/main.rs b/src/sys/pkg/bin/system-update-checker/src/main.rs
index b5bbc33..d513e22 100644
--- a/src/sys/pkg/bin/system-update-checker/src/main.rs
+++ b/src/sys/pkg/bin/system-update-checker/src/main.rs
@@ -34,7 +34,7 @@
 const MAX_CONCURRENT_CONNECTIONS: usize = 200;
 const DEFAULT_UPDATE_PACKAGE_URL: &str = "fuchsia-pkg://fuchsia.com/update";
 
-#[fuchsia::main(threads = 1, logging_tags = ["system-update-checker"])]
+#[fuchsia::main(logging_tags = ["system-update-checker"])]
 async fn main() -> Result<(), Error> {
     main_inner().await.map_err(|err| {
         // anyhow with alternate formatting prints the Display impl of each error in the chain.
diff --git a/src/ui/testing/test_graphical_presenter/src/main.rs b/src/ui/testing/test_graphical_presenter/src/main.rs
index cd88a47..e077797 100644
--- a/src/ui/testing/test_graphical_presenter/src/main.rs
+++ b/src/ui/testing/test_graphical_presenter/src/main.rs
@@ -361,7 +361,7 @@
     ViewProvider(ViewProviderRequestStream),
 }
 
-#[fuchsia::main(logging = true, threads = 1)]
+#[fuchsia::main(logging = true)]
 async fn main() -> Result<(), Error> {
     if let Err(e) = TestGraphicalPresenter::new()?.run().await {
         log::error!("Failure running test_graphical_presenter {}", e);
diff --git a/src/virtualization/bin/guest_manager_rs/src/main.rs b/src/virtualization/bin/guest_manager_rs/src/main.rs
index 4884356..29dcd2e 100644
--- a/src/virtualization/bin/guest_manager_rs/src/main.rs
+++ b/src/virtualization/bin/guest_manager_rs/src/main.rs
@@ -12,7 +12,7 @@
 use guest_manager::GuestManager;
 use std::rc::Rc;
 
-#[fuchsia::main(logging = true, threads = 1)]
+#[fuchsia::main(logging = true)]
 async fn main() -> Result<(), Error> {
     let mut fs = server::ServiceFs::new();
     fs.dir("svc").add_fidl_service(|stream: GuestManagerRequestStream| stream);
diff --git a/src/virtualization/bin/vmm/device/virtio_balloon/src/main.rs b/src/virtualization/bin/vmm/device/virtio_balloon/src/main.rs
index f33a328..8e14f57 100644
--- a/src/virtualization/bin/vmm/device/virtio_balloon/src/main.rs
+++ b/src/virtualization/bin/vmm/device/virtio_balloon/src/main.rs
@@ -126,7 +126,7 @@
     Ok(())
 }
 
-#[fuchsia::main(logging = true, threads = 1)]
+#[fuchsia::main(logging = true)]
 async fn main() -> Result<(), anyhow::Error> {
     let mut fs = server::ServiceFs::new();
     let _inspect_server_task = inspect_runtime::publish(
diff --git a/src/virtualization/bin/vmm/device/virtio_block/src/main.rs b/src/virtualization/bin/vmm/device/virtio_block/src/main.rs
index e5a6e6f..8129141 100644
--- a/src/virtualization/bin/vmm/device/virtio_block/src/main.rs
+++ b/src/virtualization/bin/vmm/device/virtio_block/src/main.rs
@@ -107,7 +107,7 @@
     Ok(())
 }
 
-#[fuchsia::main(logging = true, threads = 1)]
+#[fuchsia::main(logging = true)]
 async fn main() -> Result<(), anyhow::Error> {
     trace_provider_create_with_fdio();
     let mut fs = server::ServiceFs::new();
diff --git a/src/virtualization/bin/vmm/device/virtio_console/src/main.rs b/src/virtualization/bin/vmm/device/virtio_console/src/main.rs
index 323c153..ef591f3 100644
--- a/src/virtualization/bin/vmm/device/virtio_console/src/main.rs
+++ b/src/virtualization/bin/vmm/device/virtio_console/src/main.rs
@@ -58,7 +58,7 @@
     Ok(())
 }
 
-#[fuchsia::main(logging = true, threads = 1)]
+#[fuchsia::main(logging = true)]
 async fn main() -> Result<(), Error> {
     let mut fs = server::ServiceFs::new();
     fs.dir("svc").add_fidl_service(|stream: VirtioConsoleRequestStream| stream);
diff --git a/src/virtualization/bin/vmm/device/virtio_gpu/src/main.rs b/src/virtualization/bin/vmm/device/virtio_gpu/src/main.rs
index c924ff4..42fd2b2 100644
--- a/src/virtualization/bin/vmm/device/virtio_gpu/src/main.rs
+++ b/src/virtualization/bin/vmm/device/virtio_gpu/src/main.rs
@@ -81,7 +81,7 @@
     Ok(())
 }
 
-#[fuchsia::main(logging = true, threads = 1)]
+#[fuchsia::main(logging = true)]
 async fn main() -> Result<(), anyhow::Error> {
     let mut fs = server::ServiceFs::new();
     fs.dir("svc").add_fidl_service(|stream: VirtioGpuRequestStream| stream);
diff --git a/src/virtualization/bin/vmm/device/virtio_input/src/main.rs b/src/virtualization/bin/vmm/device/virtio_input/src/main.rs
index fb4c222..b97894a 100644
--- a/src/virtualization/bin/vmm/device/virtio_input/src/main.rs
+++ b/src/virtualization/bin/vmm/device/virtio_input/src/main.rs
@@ -73,7 +73,7 @@
     VirtioInput(VirtioInputRequestStream),
 }
 
-#[fuchsia::main(logging = true, threads = 1)]
+#[fuchsia::main(logging = true)]
 async fn main() -> Result<(), anyhow::Error> {
     let mut fs = server::ServiceFs::new();
     fs.dir("svc").add_fidl_service(IncomingService::VirtioInput);
diff --git a/src/virtualization/bin/vmm/device/virtio_mem/src/main.rs b/src/virtualization/bin/vmm/device/virtio_mem/src/main.rs
index fdcaebf..b1770b5 100644
--- a/src/virtualization/bin/vmm/device/virtio_mem/src/main.rs
+++ b/src/virtualization/bin/vmm/device/virtio_mem/src/main.rs
@@ -72,7 +72,7 @@
     .map(|((), ())| ())
 }
 
-#[fuchsia::main(logging = true, threads = 1)]
+#[fuchsia::main(logging = true)]
 async fn main() -> Result<(), anyhow::Error> {
     let mut fs = server::ServiceFs::new();
     let _inspect_server_task = inspect_runtime::publish(
diff --git a/src/virtualization/bin/vmm/device/virtio_net/src/main.rs b/src/virtualization/bin/vmm/device/virtio_net/src/main.rs
index 10d46db..2ad2ec9 100644
--- a/src/virtualization/bin/vmm/device/virtio_net/src/main.rs
+++ b/src/virtualization/bin/vmm/device/virtio_net/src/main.rs
@@ -74,7 +74,7 @@
     Ok(())
 }
 
-#[fuchsia::main(logging = true, threads = 1)]
+#[fuchsia::main(logging = true)]
 async fn main() -> Result<(), Error> {
     let mut fs = server::ServiceFs::new();
     fs.dir("svc").add_fidl_service(|stream: VirtioNetRequestStream| stream);
diff --git a/src/virtualization/bin/vmm/device/virtio_sound/src/main.rs b/src/virtualization/bin/vmm/device/virtio_sound/src/main.rs
index 35e2b86..f3afa66 100644
--- a/src/virtualization/bin/vmm/device/virtio_sound/src/main.rs
+++ b/src/virtualization/bin/vmm/device/virtio_sound/src/main.rs
@@ -250,7 +250,7 @@
     return Ok(());
 }
 
-#[fuchsia::main(logging = true, threads = 1)]
+#[fuchsia::main(logging = true)]
 async fn main() -> Result<(), Error> {
     let audio = fuchsia_component::client::connect_to_protocol::<fidl_fuchsia_media::AudioMarker>()
         .context("Failed to connect to fuchsia.media.Audio")?;
diff --git a/src/virtualization/bin/vmm/device/virtio_vsock/src/main.rs b/src/virtualization/bin/vmm/device/virtio_vsock/src/main.rs
index f2dc744..0a89f10 100644
--- a/src/virtualization/bin/vmm/device/virtio_vsock/src/main.rs
+++ b/src/virtualization/bin/vmm/device/virtio_vsock/src/main.rs
@@ -107,7 +107,7 @@
         .map_err(|err| anyhow!(err))
 }
 
-#[fuchsia::main(logging = true, logging_minimum_severity = "debug", threads = 1)]
+#[fuchsia::main(logging = true, logging_minimum_severity = "debug")]
 async fn main() -> Result<(), Error> {
     let vsock_device = VsockDevice::new();
 
diff --git a/src/virtualization/bin/vmm_launcher/src/main.rs b/src/virtualization/bin/vmm_launcher/src/main.rs
index 5c8650a..86f61ad 100644
--- a/src/virtualization/bin/vmm_launcher/src/main.rs
+++ b/src/virtualization/bin/vmm_launcher/src/main.rs
@@ -11,7 +11,7 @@
 use fuchsia_component::{client, server};
 use vmm_launcher_config::Config;
 
-#[fuchsia::main(logging = true, threads = 1)]
+#[fuchsia::main(logging = true)]
 async fn main() -> Result<(), anyhow::Error> {
     let mut fs = server::ServiceFs::new();
     fs.dir("svc").add_service_connector(|server_end: ServerEnd<GuestLifecycleMarker>| server_end);