Benph/bootstrap thread migration

massa-bootstrap/Cargo.toml

@@ -12,7 +12,6 @@ async-speed-limit = { git = "https://github.com/adrien-zinger/async-speed-limit"
     "tokio",
 ] }
 displaydoc = "0.2"
-futures = "0.3"
 num_enum = "0.5"
 nom = "7.1"
 rand = "0.8"
@@ -39,6 +38,7 @@ massa_serialization = { path = "../massa-serialization" }
 massa_signature = { path = "../massa-signature" }
 massa_pos_exports = { path = "../massa-pos-exports" }
 massa_time = { path = "../massa-time" }
+crossbeam = "0.8.2"
 
 [dev-dependencies]
 bitvec = { version = "1.0", features = ["serde"] }
@@ -59,14 +59,5 @@ tempfile = "3.3"
 
 # for more information on what are the following features used for, see the cargo.toml at workspace level
 [features]
-testing = [
-    "massa_final_state/testing",
-    "massa_ledger_worker/testing",
-    "massa_consensus_exports/testing",
-    "massa_async_pool/testing",
-]
-sandbox = [
-    "massa_async_pool/sandbox",
-    "massa_final_state/sandbox",
-    "massa_models/sandbox",
-]
+testing = ["massa_final_state/testing", "massa_ledger_worker/testing", "massa_consensus_exports/testing", "massa_async_pool/testing"]
+sandbox = ["massa_async_pool/sandbox", "massa_final_state/sandbox", "massa_models/sandbox"]