chore: print bytes read from stdin

.git-cliff.toml

@@ -30,5 +30,6 @@ filter_unconventional = true
 commit_parsers = [
   { message = "^feat", group = "Features" },
   { message = "^fix", group = "Fixes" },
+  { message = "^docs", group = "Documentation", skip = true },
 ]
 filter_commits = true

Cargo.toml

@@ -17,6 +17,7 @@ ct-sct = "0.1"
 der = { version = "0.7", features = ["std"] }
 hex = "0.4"
 itertools = "0.11"
+log = "0.4"
 memchr = "2.6"
 pkcs1 = { version = "0.7", features = ["std"] }
 rustls = { version = "0.21", features = ["dangerous_configuration"] }

src/main.rs

@@ -1,4 +1,3 @@
-#![allow(unused)]
 #![deny(rust_2018_idioms, future_incompatible)]
 
 use std::{
@@ -12,7 +11,7 @@ use const_oid::{
     db::rfc5912::{ID_EC_PUBLIC_KEY, RSA_ENCRYPTION},
     ObjectIdentifier,
 };
-use der::{Decode as _, DecodePem};
+use der::Decode as _;
 use itertools::Itertools as _;
 use memchr::memmem;
 use x509_cert::Certificate;
@@ -40,7 +39,8 @@ fn main() {
     } else if let Some(file) = args.file {
         let mut input = if file == "-" {
             let mut buf = String::new();
-            let stdin = io::stdin().read_to_string(&mut buf).unwrap();
+            let n_bytes = io::stdin().read_to_string(&mut buf).unwrap();
+            log::trace!("read {n_bytes} from stdin");
             Box::new(io::Cursor::new(buf)) as Box<dyn io::BufRead>
         } else {
             let file = fs::File::open(file).unwrap();