Fix concurrency issues (#142)

* Fix the OS FD error

* Cache the compiler versions

* Allow for auto display impl in declare wrapper type macro

* Better logging and fix concurrency issues

* Fix tests

* Format

* Make the code even more concurrent

crates/node/src/lib.rs

@@ -18,6 +18,9 @@ pub trait Node: EthereumNode {
     /// Create a new uninitialized instance.
     fn new(config: &Arguments) -> Self;
 
+    /// Returns the identifier of the node.
+    fn id(&self) -> usize;
+
     /// Spawns a node configured according to the genesis json.
     ///
     /// Blocking until it's ready to accept transactions.
@@ -36,7 +39,7 @@ pub trait Node: EthereumNode {
 
     /// Given a list of targets from the metadata file, this function determines if the metadata
     /// file can be ran on this node or not.
-    fn matches_target(&self, targets: Option<&[String]>) -> bool;
+    fn matches_target(targets: Option<&[String]>) -> bool;
 
     /// Returns the EVM version of the node.
     fn evm_version() -> EVMVersion;