diff --git a/Sources/_StringProcessing/Engine/Processor.swift b/Sources/_StringProcessing/Engine/Processor.swift
index 0350a37db..cc0fa2734 100644
--- a/Sources/_StringProcessing/Engine/Processor.swift
+++ b/Sources/_StringProcessing/Engine/Processor.swift
@@ -25,7 +25,7 @@ struct Controller {
   }
 }
 
-struct Processor {
+struct Processor: ~Copyable {
   typealias Input = String
   typealias Element = Input.Element
 
diff --git a/Sources/_StringProcessing/Engine/Tracing.swift b/Sources/_StringProcessing/Engine/Tracing.swift
index b0ce67555..cc30e117b 100644
--- a/Sources/_StringProcessing/Engine/Tracing.swift
+++ b/Sources/_StringProcessing/Engine/Tracing.swift
@@ -11,7 +11,7 @@
 
 
 // TODO: Remove this protocol (and/or reuse it for something like a FastProcessor)
-extension Processor: TracedProcessor {
+extension Processor /*: TracedProcessor*/ {
   var cycleCount: Int { metrics.cycleCount }
   var isTracingEnabled: Bool { metrics.isTracingEnabled }
 
diff --git a/Sources/_StringProcessing/Utility/Protocols.swift b/Sources/_StringProcessing/Utility/Protocols.swift
index 24ffbcf70..b8fcc4f4f 100644
--- a/Sources/_StringProcessing/Utility/Protocols.swift
+++ b/Sources/_StringProcessing/Utility/Protocols.swift
@@ -17,30 +17,30 @@ protocol InstructionProtocol {
   var operandPC: InstructionAddress? { get }
 }
 
-protocol ProcessorProtocol {
-  associatedtype Input: Collection
-  associatedtype Instruction: InstructionProtocol
-  associatedtype SavePoint = ()
-  associatedtype Registers = ()
-
-  var cycleCount: Int { get }
-  var input: Input { get }
-
-  var currentPosition: Input.Index { get }
-  var currentPC: InstructionAddress { get }
-
-  var instructions: InstructionList<Instruction> { get }
-
-  var isAcceptState: Bool { get }
-  var isFailState: Bool { get }
-
-  // Provide to get call stack formatting, default empty
-  var callStack: Array<InstructionAddress> { get }
-
-  // Provide to get save point formatting, default empty
-  var savePoints: Array<SavePoint> { get }
-
-  // Provide to get register formatting, default empty
-  var registers: Registers { get }
-}
+//protocol ProcessorProtocol: ~Copyable {
+//  associatedtype Input: Collection
+//  associatedtype Instruction: InstructionProtocol
+//  associatedtype SavePoint = ()
+//  associatedtype Registers = ()
+//
+//  var cycleCount: Int { get }
+//  var input: Input { get }
+//
+//  var currentPosition: Input.Index { get }
+//  var currentPC: InstructionAddress { get }
+//
+//  var instructions: InstructionList<Instruction> { get }
+//
+//  var isAcceptState: Bool { get }
+//  var isFailState: Bool { get }
+//
+//  // Provide to get call stack formatting, default empty
+//  var callStack: Array<InstructionAddress> { get }
+//
+//  // Provide to get save point formatting, default empty
+//  var savePoints: Array<SavePoint> { get }
+//
+//  // Provide to get register formatting, default empty
+//  var registers: Registers { get }
+//}
 
diff --git a/Sources/_StringProcessing/Utility/Traced.swift b/Sources/_StringProcessing/Utility/Traced.swift
index 198564fe1..fa04568cf 100644
--- a/Sources/_StringProcessing/Utility/Traced.swift
+++ b/Sources/_StringProcessing/Utility/Traced.swift
@@ -12,21 +12,21 @@
 
 // TODO: Place shared formatting and trace infrastructure here
 
-protocol Traced {
-  var isTracingEnabled: Bool { get }
-}
-
-protocol TracedProcessor: ProcessorProtocol, Traced {
-  // Empty defaulted
-  func formatCallStack() -> String // empty default
-  func formatSavePoints() -> String // empty default
-  func formatRegisters() -> String // empty default
-
-  // Non-empty defaulted
-  func formatTrace() -> String
-  func formatInput() -> String
-  func formatInstructionWindow(windowSize: Int) -> String
-}
+//protocol Traced {
+//  var isTracingEnabled: Bool { get }
+//}
+//
+//protocol TracedProcessor: ProcessorProtocol, Traced {
+//  // Empty defaulted
+//  func formatCallStack() -> String // empty default
+//  func formatSavePoints() -> String // empty default
+//  func formatRegisters() -> String // empty default
+//
+//  // Non-empty defaulted
+//  func formatTrace() -> String
+//  func formatInput() -> String
+//  func formatInstructionWindow(windowSize: Int) -> String
+//}
 
 func lineNumber(_ i: Int) -> String {
   "[\(i)]"
@@ -34,18 +34,18 @@ func lineNumber(_ i: Int) -> String {
 func lineNumber(_ pc: InstructionAddress) -> String {
   lineNumber(pc.rawValue)
 }
-
-extension TracedProcessor where Registers: Collection{
-  func formatRegisters() -> String {
-    typealias E = ()
-    if !registers.isEmpty {
-      return "\(registers)\n"
-    }
-    return ""
-  }
-}
-
-extension TracedProcessor {
+//
+//extension Processor {
+//  func formatRegisters() -> String {
+//    typealias E = ()
+//    if !registers.isEmpty {
+//      return "\(registers)\n"
+//    }
+//    return ""
+//  }
+//}
+
+extension Processor {
   func printTrace() { print(formatTrace()) }
 
   func trace() {
@@ -60,16 +60,16 @@ extension TracedProcessor {
     return ""
   }
 
-  func formatSavePoints() -> String {
-    if !savePoints.isEmpty {
-      var result = "save points:\n"
-      for point in savePoints {
-        result += "  \(point)\n"
-      }
-      return result
-    }
-    return ""
-  }
+//  func formatSavePoints() -> String {
+//    if !savePoints.isEmpty {
+//      var result = "save points:\n"
+//      for point in savePoints {
+//        result += "  \(point)\n"
+//      }
+//      return result
+//    }
+//    return ""
+//  }
 
   func formatRegisters() -> String {
      typealias E = ()