diff --git a/afl/Cargo.toml b/afl/Cargo.toml
index bdf384435d..a21238edca 100644
--- a/afl/Cargo.toml
+++ b/afl/Cargo.toml
@@ -14,9 +14,7 @@ default = ["std"]
 std = []
 
 [dependencies]
-xxhash-rust = { version = "0.8.0-beta.5", features = ["xxh3"] } # xxh3 hashing for rust
 hashbrown = "0.9" # A faster hashmap, nostd compatible
 libc = "0.2" # For (*nix) libc
 num = "*"
-
-#shared_memory = { version = "0.11.3", optional = true } # shared mem for windows and unix
\ No newline at end of file
+xxhash-rust = { version = "0.8.0-beta.5", features = ["xxh3"] } # xxh3 hashing for rust
\ No newline at end of file
diff --git a/afl/src/corpus/mod.rs b/afl/src/corpus/mod.rs
index b8a33d55c4..4df65a9063 100644
--- a/afl/src/corpus/mod.rs
+++ b/afl/src/corpus/mod.rs
@@ -9,9 +9,9 @@ use core::marker::PhantomData;
 #[cfg(feature = "std")]
 use std::path::PathBuf;
 
+use crate::AflError;
 use crate::inputs::Input;
 use crate::utils::Rand;
-use crate::AflError;
 
 pub trait HasTestcaseVec<I>
 where
diff --git a/afl/src/corpus/testcase.rs b/afl/src/corpus/testcase.rs
index ee40ac419b..1af392952a 100644
--- a/afl/src/corpus/testcase.rs
+++ b/afl/src/corpus/testcase.rs
@@ -1,6 +1,3 @@
-use crate::inputs::Input;
-use crate::AflError;
-
 use alloc::boxed::Box;
 use alloc::rc::Rc;
 use alloc::string::String;
@@ -10,6 +7,9 @@ use core::default::Default;
 use core::option::Option;
 use hashbrown::HashMap;
 
+use crate::AflError;
+use crate::inputs::Input;
+
 // TODO PathBuf for no_std and change filename to PathBuf
 //#[cfg(feature = "std")]
 //use std::path::PathBuf;
diff --git a/afl/src/engines/mod.rs b/afl/src/engines/mod.rs
index 60e121e545..ee35af800d 100644
--- a/afl/src/engines/mod.rs
+++ b/afl/src/engines/mod.rs
@@ -6,11 +6,10 @@ use alloc::vec::Vec;
 use core::cell::RefCell;
 use core::fmt::Debug;
 use core::marker::PhantomData;
-
 use hashbrown::HashMap;
 
 use crate::corpus::{Corpus, HasCorpus, Testcase};
-use crate::events::{EventManager, LoadInitialEvent};
+use crate::events::{EventManager, LoadInitialEvent, UpdateStatsEvent};
 use crate::executors::Executor;
 use crate::feedbacks::Feedback;
 use crate::generators::Generator;
@@ -327,7 +326,7 @@ where
             let cur = current_milliseconds();
             if cur - last > 60 * 100 {
                 last = cur;
-                fire_event!(events, LoadInitialEvent)?;
+                fire_event!(events, UpdateStatsEvent)?;
             }
         }
     }
@@ -385,10 +384,13 @@ where
 mod tests {
 
     use alloc::boxed::Box;
+
+    #[cfg(feature = "std")]
     use std::io::stderr;
 
     use crate::corpus::{Corpus, InMemoryCorpus, Testcase};
     use crate::engines::{Engine, StdEngine, StdState};
+    #[cfg(feature = "std")]
     use crate::events::LoggerEventManager;
     use crate::executors::inmemory::InMemoryExecutor;
     use crate::executors::{Executor, ExitKind};
@@ -401,6 +403,7 @@ mod tests {
         ExitKind::Ok
     }
 
+    #[cfg(feature = "std")]
     #[test]
     fn test_engine() {
         let mut rand = StdRand::new(0);
diff --git a/afl/src/events/mod.rs b/afl/src/events/mod.rs
index 1db5674311..0faec55cf0 100644
--- a/afl/src/events/mod.rs
+++ b/afl/src/events/mod.rs
@@ -1,13 +1,17 @@
+#[cfg(feature = "std")]
 pub mod llmp;
+#[cfg(feature = "std")]
 pub mod llmp_translated; // TODO: Abstract away.
+#[cfg(feature = "std")]
 pub mod shmem_translated;
+
+#[cfg(feature = "std")]
 pub use crate::events::llmp::LLMP;
 
 use alloc::rc::Rc;
-use core::any::Any;
 use core::cell::RefCell;
 //use core::any::TypeId;
-// TODO use core version
+#[cfg(feature = "std")]
 use std::io::Write;
 
 use crate::corpus::{Corpus, Testcase};
@@ -17,7 +21,7 @@ use crate::inputs::Input;
 use crate::utils::Rand;
 use crate::AflError;
 
-pub trait Event: Any {
+pub trait Event {
     fn name(&self) -> &'static str;
 }
 
@@ -86,7 +90,7 @@ where
     testcase: Rc<RefCell<Testcase<I>>>,
 }
 
-impl<I> Event<I> for NewTestcaseEvent<I>
+impl<I> Event for NewTestcaseEvent<I>
 where
     I: Input,
 {
@@ -102,6 +106,10 @@ where
     pub fn new(testcase: Rc<RefCell<Testcase<I>>>) -> Self {
         NewTestcaseEvent { testcase: testcase }
     }
+
+    pub fn testcase(&self) -> &Rc<RefCell<Testcase<I>>> {
+        &self.testcase
+    }
 }
 
 pub struct UpdateStatsEvent {}
@@ -116,14 +124,16 @@ impl UpdateStatsEvent {
     }
 }
 
+#[cfg(feature = "std")]
 pub struct LoggerEventManager<W>
 where
     W: Write,
 {
-    events: Vec<Box<dyn Event>>,
+    events: Vec<String>,
     writer: W,
 }
 
+#[cfg(feature = "std")]
 impl<S, C, E, I, R, W> EventManager<S, C, E, I, R> for LoggerEventManager<W>
 where
     S: State<C, E, I, R>,
@@ -151,7 +161,7 @@ where
     where
         T: Event,
     {
-        self.events.push(Box::new(event));
+        self.events.push(event.name().to_string());
         Ok(())
     }
 
@@ -162,7 +172,7 @@ where
                 &mut self.writer,
                 "#{}\t[{}] corp: {} exec/s: {}",
                 state.executions(),
-                event.name(),
+                event,
                 state.corpus().entries().len(),
                 state.executions_over_seconds()
             )?;
@@ -172,6 +182,7 @@ where
     }
 }
 
+#[cfg(feature = "std")]
 impl<W> LoggerEventManager<W>
 where
     W: Write,
diff --git a/afl/src/executors/inmemory.rs b/afl/src/executors/inmemory.rs
index 4c60b37261..36920a9169 100644
--- a/afl/src/executors/inmemory.rs
+++ b/afl/src/executors/inmemory.rs
@@ -3,9 +3,9 @@ use core::cell::RefCell;
 use core::ffi::c_void;
 use core::ptr;
 
+use crate::AflError;
 use crate::executors::{Executor, ExitKind};
 use crate::inputs::Input;
-use crate::AflError;
 
 type HarnessFunction<I> = fn(&dyn Executor<I>, &[u8]) -> ExitKind;
 
diff --git a/afl/src/feedbacks/mod.rs b/afl/src/feedbacks/mod.rs
index fe9ae2742b..943ae12629 100644
--- a/afl/src/feedbacks/mod.rs
+++ b/afl/src/feedbacks/mod.rs
@@ -1,15 +1,14 @@
-extern crate num;
-
 use alloc::rc::Rc;
 use alloc::vec::Vec;
+use alloc::boxed::Box;
 use core::cell::RefCell;
 use core::marker::PhantomData;
 use num::Integer;
 
+use crate::AflError;
 use crate::corpus::{Testcase, TestcaseMetadata};
 use crate::inputs::Input;
 use crate::observers::MapObserver;
-use crate::AflError;
 
 pub trait Feedback<I>
 where
diff --git a/afl/src/generators/mod.rs b/afl/src/generators/mod.rs
index 1f1fefaa13..02a976555f 100644
--- a/afl/src/generators/mod.rs
+++ b/afl/src/generators/mod.rs
@@ -2,10 +2,10 @@ use alloc::vec::Vec;
 use core::cmp::min;
 use core::marker::PhantomData;
 
+use crate::AflError;
 use crate::inputs::bytes::BytesInput;
 use crate::inputs::Input;
 use crate::utils::Rand;
-use crate::AflError;
 
 pub trait Generator<I, R>
 where
diff --git a/afl/src/inputs/bytes.rs b/afl/src/inputs/bytes.rs
index e9e010c71c..f7c674a899 100644
--- a/afl/src/inputs/bytes.rs
+++ b/afl/src/inputs/bytes.rs
@@ -4,8 +4,8 @@ use alloc::vec::Vec;
 use core::cell::RefCell;
 use core::convert::From;
 
-use crate::inputs::{HasBytesVec, HasTargetBytes, Input};
 use crate::AflError;
+use crate::inputs::{HasBytesVec, HasTargetBytes, Input};
 
 /// A bytes input is the basic input
 #[derive(Clone, Debug, Default)]
diff --git a/afl/src/mutators/mod.rs b/afl/src/mutators/mod.rs
index 24c195239a..69298ad763 100644
--- a/afl/src/mutators/mod.rs
+++ b/afl/src/mutators/mod.rs
@@ -4,14 +4,14 @@ pub use scheduled::HavocBytesMutator;
 pub use scheduled::ScheduledMutator;
 pub use scheduled::StdScheduledMutator;
 
+use alloc::rc::Rc;
+use core::cell::RefCell;
+
+use crate::AflError;
 use crate::corpus::Corpus;
 use crate::corpus::Testcase;
 use crate::inputs::Input;
 use crate::utils::Rand;
-use crate::AflError;
-
-use alloc::rc::Rc;
-use core::cell::RefCell;
 
 pub trait Mutator<C, I, R>
 where
diff --git a/afl/src/mutators/scheduled.rs b/afl/src/mutators/scheduled.rs
index b0f2e0e10e..893a55a4c6 100644
--- a/afl/src/mutators/scheduled.rs
+++ b/afl/src/mutators/scheduled.rs
@@ -1,11 +1,11 @@
+use alloc::vec::Vec;
+use core::marker::PhantomData;
+
+use crate::AflError;
 use crate::inputs::{HasBytesVec, Input};
 use crate::mutators::Corpus;
 use crate::mutators::Mutator;
 use crate::utils::Rand;
-use crate::AflError;
-
-use alloc::vec::Vec;
-use core::marker::PhantomData;
 
 pub enum MutationResult {
     Mutated,
diff --git a/afl/src/stages/mod.rs b/afl/src/stages/mod.rs
index 65894faa02..c0c011192f 100644
--- a/afl/src/stages/mod.rs
+++ b/afl/src/stages/mod.rs
@@ -1,6 +1,10 @@
 pub mod mutational;
 pub use mutational::StdMutationalStage;
 
+use alloc::rc::Rc;
+use core::cell::RefCell;
+
+use crate::AflError;
 use crate::corpus::testcase::Testcase;
 use crate::corpus::Corpus;
 use crate::engines::State;
@@ -8,9 +12,6 @@ use crate::events::EventManager;
 use crate::executors::Executor;
 use crate::inputs::Input;
 use crate::utils::Rand;
-use crate::AflError;
-use alloc::rc::Rc;
-use core::cell::RefCell;
 
 pub trait Stage<S, EM, E, C, I, R>
 where
diff --git a/afl/src/stages/mutational.rs b/afl/src/stages/mutational.rs
index 6736585290..154d3beeda 100644
--- a/afl/src/stages/mutational.rs
+++ b/afl/src/stages/mutational.rs
@@ -6,13 +6,12 @@ use crate::corpus::testcase::Testcase;
 use crate::engines::State;
 use crate::events::{EventManager, NewTestcaseEvent};
 use crate::executors::Executor;
-use crate::fire_event;
 use crate::inputs::Input;
 use crate::mutators::Mutator;
 use crate::stages::Corpus;
 use crate::stages::Stage;
 use crate::utils::Rand;
-use crate::AflError;
+use crate::{fire_event, AflError};
 
 // TODO multi mutators stage
 
@@ -53,12 +52,13 @@ where
                 .mutate(rand, state.corpus_mut(), &mut input, i as i32)?;
 
             let (interesting, new_testcase) = state.evaluate_input(input)?;
+
+            self.mutator_mut()
+                .post_exec(interesting, new_testcase.clone(), i as i32)?;
+
             if !new_testcase.is_none() {
                 fire_event!(events, NewTestcaseEvent<I>, new_testcase.unwrap())?;
             }
-
-            self.mutator_mut()
-                .post_exec(interesting, new_testcase, i as i32)?;
         }
         Ok(())
     }
diff --git a/afl/src/utils.rs b/afl/src/utils.rs
index de469a80ea..4ae37eaf25 100644
--- a/afl/src/utils.rs
+++ b/afl/src/utils.rs
@@ -71,30 +71,6 @@ where
     }
 }
 
-/// Has a Rand Rc RefCell field (internal mutability), that can be used to get random values
-pub trait HasRandRR {
-    type R: Rand;
-
-    /// Get the hold Rand instance
-    fn rand(&self) -> &Rc<RefCell<Self::R>>;
-
-    // Gets the next 64 bit value
-    fn rand_next(&self) -> u64 {
-        self.rand().borrow_mut().next()
-    }
-    // Gets a value below the given 64 bit val (inclusive)
-    fn rand_below(&self, upper_bound_excl: u64) -> u64 {
-        self.rand().borrow_mut().below(upper_bound_excl)
-    }
-
-    // Gets a value between the given lower bound (inclusive) and upper bound (inclusive)
-    fn rand_between(&self, lower_bound_incl: u64, upper_bound_incl: u64) -> u64 {
-        self.rand()
-            .borrow_mut()
-            .between(lower_bound_incl, upper_bound_incl)
-    }
-}
-
 const HASH_CONST: u64 = 0xa5b35705;
 
 /// XXH3 Based, hopefully speedy, rnd implementation