Fixing clippy some more (#1872)

* Fixing clippy some more

* more commit

* Git gud

* remove more useless imports

libafl/src/corpus/testcase.rs

@@ -4,8 +4,6 @@
 use alloc::string::String;
 use core::{
     cell::{Ref, RefMut},
-    default::Default,
-    option::Option,
     time::Duration,
 };
 #[cfg(feature = "std")]

libafl/src/feedbacks/nautilus.rs

@@ -6,7 +6,6 @@ use std::fs::create_dir_all;
 use grammartec::{chunkstore::ChunkStore, context::Context};
 use libafl_bolts::Named;
 use serde::{Deserialize, Serialize};
-use serde_json;
 
 use crate::{
     corpus::{Corpus, Testcase},

libafl/src/inputs/bytes.rs

@@ -4,7 +4,6 @@
 use alloc::{borrow::ToOwned, rc::Rc, string::String, vec::Vec};
 use core::{
     cell::RefCell,
-    convert::From,
     hash::{BuildHasher, Hasher},
 };
 #[cfg(feature = "std")]

libafl/src/inputs/encoded.rs

@@ -9,7 +9,6 @@ use alloc::{borrow::ToOwned, rc::Rc, string::String, vec::Vec};
 use core::str::from_utf8;
 use core::{
     cell::RefCell,
-    convert::From,
     hash::{BuildHasher, Hasher},
 };
 

libafl/src/inputs/gramatron.rs

@@ -2,7 +2,6 @@
 use alloc::{rc::Rc, string::String, vec::Vec};
 use core::{
     cell::RefCell,
-    convert::From,
     hash::{BuildHasher, Hasher},
 };
 

libafl/src/inputs/nautilus.rs

@@ -5,7 +5,7 @@
 //use core::hash::Hasher;
 
 use alloc::{rc::Rc, string::String, vec::Vec};
-use core::{cell::RefCell, convert::From};
+use core::cell::RefCell;
 use std::hash::{Hash, Hasher};
 
 use grammartec::{

libafl/src/monitors/tui/mod.rs

@@ -22,7 +22,7 @@ use crossterm::{
 use hashbrown::HashMap;
 use libafl_bolts::{current_time, format_duration_hms, ClientId};
 use ratatui::{backend::CrosstermBackend, Terminal};
-use serde_json::{self, Value};
+use serde_json::Value;
 
 #[cfg(feature = "introspection")]
 use super::{ClientPerfMonitor, PerfFeature};

libafl/src/mutators/mutations.rs

@@ -1401,7 +1401,7 @@ mod tests {
 
     use super::*;
     use crate::{
-        corpus::{Corpus, InMemoryCorpus},
+        corpus::InMemoryCorpus,
         feedbacks::ConstFeedback,
         inputs::BytesInput,
         mutators::MutatorsTuple,

libafl/src/mutators/string.rs

@@ -520,10 +520,15 @@ where
 
 #[cfg(test)]
 mod test {
-    use libafl_bolts::rands::StdRand;
+    use libafl_bolts::{rands::StdRand, Error};
 
-    use super::*;
+    use crate::{
-    use crate::{corpus::NopCorpus, stages::extract_metadata, state::StdState};
+        corpus::NopCorpus,
+        inputs::{BytesInput, HasBytesVec},
+        mutators::{Mutator, StringCategoryRandMutator, StringSubcategoryRandMutator},
+        stages::extract_metadata,
+        state::StdState,
+    };
 
     // a not-so-useful test for this
     #[test]

libafl/src/stages/mod.rs

@@ -4,7 +4,7 @@ A well-known [`Stage`], for example, is the mutational stage, running multiple [
 Other stages may enrich [`crate::corpus::Testcase`]s with metadata.
 */
 
-use core::{convert::From, marker::PhantomData};
+use core::marker::PhantomData;
 
 pub use calibrate::CalibrationStage;
 pub use colorization::*;

libafl_bolts/src/cli.rs

@@ -365,9 +365,6 @@ pub fn parse_args() -> FuzzerOptions {
     any(feature = "cli", feature = "qemu_cli", feature = "frida_cli")
 ))]
 mod tests {
-    #[cfg(feature = "frida_cli")]
-    use alloc::string::String;
-
     use super::*;
 
     /// pass a standard option and `--` followed by some options that `FuzzerOptions` doesn't know

libafl_bolts/src/lib.rs

@@ -211,7 +211,6 @@ pub mod launcher {}
 use core::{
     array::TryFromSliceError,
     fmt::{self, Display},
-    iter::Iterator,
     num::{ParseIntError, TryFromIntError},
     time,
 };

libafl_bolts/src/rands.rs

@@ -2,7 +2,7 @@
 use core::{debug_assert, fmt::Debug};
 
 #[cfg(feature = "rand_trait")]
-use rand_core::{self, impls::fill_bytes_via_next, RngCore};
+use rand_core::{impls::fill_bytes_via_next, RngCore};
 use serde::{de::DeserializeOwned, Deserialize, Serialize};
 
 #[cfg(feature = "std")]

libafl_bolts/src/serdeany.rs

@@ -73,7 +73,6 @@ pub mod serdeany_registry {
         hash_map::{Keys, Values, ValuesMut},
         HashMap,
     };
-    use postcard;
     use serde::{Deserialize, Serialize};
 
     use crate::{

libafl_cc/src/ar.rs

@@ -1,7 +1,7 @@
 //! Ar Wrapper from `LibAFL`
 // pass to e.g. cmake with -DCMAKE_AR=/path/to/fuzzer/target/release/libafl_ar
 
-use std::{convert::Into, env, path::PathBuf, str::FromStr, string::String, vec::Vec};
+use std::{env, path::PathBuf, str::FromStr};
 
 use crate::{Error, ToolWrapper, LIB_EXT, LIB_PREFIX};
 

libafl_cc/src/clang.rs

@@ -1,12 +1,9 @@
 //! LLVM compiler Wrapper from `LibAFL`
 
 use std::{
-    convert::Into,
     env,
     path::{Path, PathBuf},
     str::FromStr,
-    string::String,
-    vec::Vec,
 };
 
 use crate::{CompilerWrapper, Error, ToolWrapper, LIB_EXT, LIB_PREFIX};

libafl_cc/src/lib.rs

@@ -57,7 +57,7 @@
     )
 )]
 
-use std::{convert::Into, path::Path, process::Command, string::String, vec::Vec};
+use std::{path::Path, process::Command};
 
 pub mod ar;
 pub use ar::ArWrapper;

libafl_cc/src/libtool.rs

@@ -1,7 +1,7 @@
 //! Libtool Wrapper from `LibAFL`
 // call make passing LIBTOOL=/path/to/target/release/libafl_libtool
 
-use std::{convert::Into, env, path::PathBuf, str::FromStr, string::String, vec::Vec};
+use std::{env, path::PathBuf, str::FromStr};
 
 use crate::{Error, ToolWrapper, LIB_EXT, LIB_PREFIX};
 

libafl_concolic/test/dump_constraints/src/main.rs

@@ -8,10 +8,9 @@ use std::{
     io::{BufWriter, Write},
     path::PathBuf,
     process::{exit, Command},
-    string::ToString,
 };
 
-use clap::{self, Parser};
+use clap::Parser;
 use libafl::observers::concolic::{
     serialization_format::{MessageFileReader, MessageFileWriter, DEFAULT_ENV_NAME},
     EXPRESSION_PRUNING, HITMAP_ENV_NAME, NO_FLOAT_ENV_NAME, SELECTIVE_SYMBOLICATION_ENV_NAME,

libafl_frida/src/cmplog_rt.rs

@@ -14,7 +14,7 @@ use libafl::{
     inputs::{HasTargetBytes, Input},
     Error,
 };
-use libafl_targets::{self, CMPLOG_MAP_W};
+use libafl_targets::CMPLOG_MAP_W;
 use rangemap::RangeMap;
 
 use crate::helper::FridaRuntime;

libafl_qemu/src/elf.rs

@@ -1,6 +1,6 @@
 //! Utilities to parse and process ELFs
 
-use std::{convert::AsRef, fs::File, io::Read, ops::Range, path::Path, str};
+use std::{fs::File, io::Read, ops::Range, path::Path, str};
 
 use goblin::elf::{header::ET_DYN, Elf};
 use libafl::Error;

libafl_qemu/src/emu.rs

@@ -1,7 +1,6 @@
 //! Expose QEMU user `LibAFL` C api to Rust
 
 use core::{
-    convert::Into,
     ffi::c_void,
     fmt,
     mem::{transmute, MaybeUninit},
@@ -1763,8 +1762,6 @@ impl ArchExtras for Emulator {
 
 #[cfg(feature = "python")]
 pub mod pybind {
-    use std::convert::TryFrom;
-
     use pyo3::{exceptions::PyValueError, prelude::*, types::PyInt};
 
     use super::{GuestAddr, GuestUsize, MmapPerms, SyscallHookResult};

utils/gramatron/construct_automata/src/main.rs

@@ -7,7 +7,7 @@ use std::{
     sync::OnceLock,
 };
 
-use clap::{self, Parser};
+use clap::Parser;
 use libafl::generators::gramatron::{Automaton, Trigger};
 use regex::Regex;
 use serde_json::Value;