Enable node tracing for dataflow example

examples/rust-dataflow/node/Cargo.toml

@@ -6,7 +6,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-dora-node-api = { workspace = true }
+dora-node-api = { workspace = true, features = ["tracing"] }
 eyre = "0.6.8"
 futures = "0.3.21"
 rand = "0.8.5"

examples/rust-dataflow/sink/Cargo.toml

@@ -6,5 +6,5 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-dora-node-api = { workspace = true }
+dora-node-api = { workspace = true, features = ["tracing"] }
 eyre = "0.6.8"