fix: resolve Clippy and README CI failures

.github/workflows/test.yml

@@ -48,5 +48,6 @@ jobs:
 
       - name: Check README
         run: |
-            cargo install cargo-rdme
+            cargo install cargo-rdme --version 2.2.3 --locked
+            cargo rdme install-rust-toolchain-for-intralinks
             cargo rdme --check

README.md

@@ -35,9 +35,9 @@ of returning the calculated hash in different representations:
 * [`PoseidonBytesHasher`](https://docs.rs/light-poseidon/latest/light_poseidon/trait.PoseidonBytesHasher.html) with the
   `hash_bytes_be` and `hash_bytes_le` methods which returns a byte array.
 * [`PoseidonHasher`](https://docs.rs/light-poseidon/latest/light_poseidon/trait.PoseidonHasher.html) with the `hash` method which returns
-  [`ark_ff::PrimeField`](ark_ff::PrimeField). Might be useful if you want
+  [`ark_ff::PrimeField`](https://docs.rs/ark_ff/latest/ark_ff/fields/prime/trait.PrimeField.html). Might be useful if you want
   to immediately process the result with an another library which works with
-  [`ark_ff::PrimeField`](ark_ff::PrimeField) types.
+  [`ark_ff::PrimeField`](https://docs.rs/ark_ff/latest/ark_ff/fields/prime/trait.PrimeField.html) types.
 
 ## Examples
 
@@ -64,7 +64,7 @@ println!("{:?}", hash);
 ```
 
 With [`PoseidonHasher`](https://docs.rs/light-poseidon/latest/light_poseidon/trait.PoseidonHasher.html) trait and
-[`ark_ff::PrimeField`](ark_ff::PrimeField) result:
+[`ark_ff::PrimeField`](https://docs.rs/ark_ff/latest/ark_ff/fields/prime/trait.PrimeField.html) result:
 
 ```rust
 use light_poseidon::{Poseidon, PoseidonHasher, parameters::bn254_x5};

xtask/src/generate_parameters.rs

@@ -65,15 +65,15 @@ pub fn generate_parameters(_opts: Options) -> Result<(), anyhow::Error> {
             .stdout(Stdio::inherit())
             .stderr(Stdio::inherit())
             .output()
-            .map_err(|e| anyhow::format_err!("git clone failed: {}", e.to_string()))?;
+            .map_err(|e| anyhow::format_err!("git clone failed: {}", e))?;
     }
     if !Path::new("./target/params").exists() {
         let _mkdir_result = std::process::Command::new("mkdir")
             .arg("./target/params")
             .stdout(Stdio::inherit())
             .stderr(Stdio::inherit())
             .output()
-            .map_err(|e| anyhow::format_err!("mkdir failed: {}", e.to_string()))?;
+            .map_err(|e| anyhow::format_err!("mkdir failed: {}", e))?;
     }
     for i in 2..14 {
         let path = format!("./target/params/poseidon_params_bn254_x5_{}", i);
@@ -240,7 +240,7 @@ pub fn generate_parameters(_opts: Options) -> Result<(), anyhow::Error> {
     std::process::Command::new("cargo")
         .arg("fmt")
         .output()
-        .map_err(|e| anyhow::format_err!("cargo fmt failed: {}", e.to_string()))?;
+        .map_err(|e| anyhow::format_err!("cargo fmt failed: {}", e))?;
     Ok(())
 }