Move from failure to anyhow

Cargo.toml

@@ -12,6 +12,7 @@ categories = ["asynchronous", "network-programming","command-line-utilities"]
 readme = "README.md"
 
 [dependencies]
+anyhow = "1.0"
 byteorder = "1.3.2"
 clap = { version="2.33.0", default-features = false, features=["wrap_help", "nightly"] }
 clockpro-cache = "0.1.8"
@@ -20,7 +21,6 @@ daemonize-simple = "0.1.2"
 derivative = "1.0.3"
 dnsstamps = "0.1.2"
 env_logger = { version="0.7.1", default-features = false, features = ["humantime"] }
-failure = "0.1.6"
 futures-preview = { version = "=0.3.0-alpha.19", features = ["async-await"] }
 jemallocator = "0.3.2"
 libsodium-sys-stable="1.18.2"
@@ -29,12 +29,12 @@ net2 = "0.2.33"
 parking_lot = "0.9.0"
 privdrop = "0.3.3"
 rand = "0.7.2"
-serde = "1.0.101"
-serde_derive = "1.0.101"
+serde = "1.0.102"
+serde_derive = "1.0.102"
 serde-big-array = "0.2.0"
 siphasher = "0.3.1"
 tokio = "=0.2.0-alpha.6"
-toml = "0.5.3"
+toml = "0.5.5"
 
 [dependencies.hyper]
 optional = true

src/anonymized_dns.rs

@@ -1,7 +1,7 @@
 use crate::*;
+use crate::errors::*;
 
 use byteorder::{BigEndian, ByteOrder};
-use failure::ensure;
 use siphasher::sip128::Hasher128;
 use std::hash::Hasher;
 use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6};

src/blacklist.rs

@@ -45,7 +45,7 @@ impl BlackList {
             }
             let qname = line.as_bytes().to_vec().to_ascii_lowercase();
             if qname.is_empty() {
-                bail!(format_err!("Unexpected blacklist rule at line {}", line_nb))
+                bail!("Unexpected blacklist rule at line {}", line_nb)
             }
             map.insert(qname, ());
         }

src/config.rs

@@ -82,7 +82,7 @@ impl Config {
     pub fn from_string(toml: &str) -> Result<Config, Error> {
         let config: Config = match toml::from_str(toml) {
             Ok(config) => config,
-            Err(e) => bail!(format_err!("Parse error in the configuration file: {}", e)),
+            Err(e) => bail!("Parse error in the configuration file: {}", e),
         };
         Ok(config)
     }

src/crypto.rs

@@ -178,7 +178,7 @@ impl SharedKey {
         let idx = decrypted
             .iter()
             .rposition(|x| *x != 0x00)
-            .ok_or_else(|| format_err!("Padding error"))?;
+            .ok_or_else(|| anyhow!("Padding error"))?;
         ensure!(decrypted[idx] == 0x80, "Padding error");
         decrypted.truncate(idx);
         Ok(decrypted)

src/dns.rs

@@ -430,7 +430,7 @@ pub fn serve_certificates<'t>(
     let dnscrypt_encryption_params = dnscrypt_encryption_params_set
         .into_iter()
         .max_by_key(|x| x.dnscrypt_cert().ts_end())
-        .ok_or_else(|| format_err!("No certificates"))?;
+        .ok_or_else(|| anyhow!("No certificates"))?;
     let cert_bin = dnscrypt_encryption_params.dnscrypt_cert().as_bytes();
     ensure!(cert_bin.len() <= 0xff, "Certificate too long");
     ancount_inc(&mut packet)?;

src/dnscrypt.rs

@@ -64,7 +64,7 @@ pub fn decrypt(
     let dnscrypt_encryption_params = dnscrypt_encryption_params_set
         .iter()
         .find(|p| p.client_magic() == client_magic)
-        .ok_or_else(|| format_err!("Client magic not found"))?;
+        .ok_or_else(|| anyhow!("Client magic not found"))?;
 
     let mut nonce = [0u8; DNSCRYPT_FULL_NONCE_SIZE as usize];
     nonce[..DNSCRYPT_QUERY_NONCE_SIZE].copy_from_slice(client_nonce);

src/errors.rs

@@ -1 +1 @@
-pub use failure::{bail, ensure, Error};
+pub use anyhow::{anyhow, bail, ensure, Error};

src/main.rs

@@ -12,8 +12,6 @@ extern crate clap;
 #[macro_use]
 extern crate derivative;
 #[macro_use]
-extern crate failure;
-#[macro_use]
 extern crate log;
 #[macro_use]
 extern crate serde_derive;
@@ -56,7 +54,6 @@ use byteorder::{BigEndian, ByteOrder};
 use clap::Arg;
 use clockpro_cache::ClockProCache;
 use dnsstamps::{InformalProperty, WithInformalProperty};
-use failure::{bail, ensure};
 use futures::join;
 use futures::prelude::*;
 use parking_lot::Mutex;
@@ -252,7 +249,7 @@ async fn tls_proxy(
     let fut_proxy_2 = erh.copy(&mut wh);
     match join!(fut_proxy_1, fut_proxy_2) {
         (Ok(_), Ok(_)) => Ok(()),
-        _ => Err(format_err!("TLS proxy error")),
+        _ => bail!("TLS proxy error"),
     }
 }
 
@@ -401,7 +398,7 @@ fn bind_listeners(
         };
         let tcp_listener = match TcpListener::from_std(std_socket, &Default::default()) {
             Ok(tcp_listener) => tcp_listener,
-            Err(e) => bail!(format_err!("{}/TCP: {}", listen_addr, e)),
+            Err(e) => bail!("{}/TCP: {}", listen_addr, e),
         };
         let std_socket = match listen_addr {
             SocketAddr::V4(_) => net2::UdpBuilder::new_v4()?
@@ -414,7 +411,7 @@ fn bind_listeners(
         };
         let udp_socket = match std_socket {
             Ok(udp_socket) => udp_socket,
-            Err(e) => bail!(format_err!("{}/UDP: {}", listen_addr, e)),
+            Err(e) => bail!("{}/UDP: {}", listen_addr, e),
         };
         sockets.push((tcp_listener, udp_socket))
     }
@@ -449,7 +446,7 @@ fn privdrop(config: &Config) -> Result<(), Error> {
         }
         daemon
             .doit()
-            .map_err(|e| format_err!("Unable to daemonize: [{}]", e))?;
+            .map_err(|e| anyhow!("Unable to daemonize: [{}]", e))?;
     }
     Ok(())
 }
@@ -601,14 +598,14 @@ fn main() -> Result<(), Error> {
 
     let cache = Cache::new(
         ClockProCache::new(cache_capacity)
-            .map_err(|e| format_err!("Unable to create the DNS cache: [{}]", e))?,
+            .map_err(|e| anyhow!("Unable to create the DNS cache: [{}]", e))?,
         config.cache_ttl_min,
         config.cache_ttl_max,
         config.cache_ttl_error,
     );
     let cert_cache = Cache::new(
         ClockProCache::new(RELAYED_CERT_CACHE_SIZE)
-            .map_err(|e| format_err!("Unable to create the relay cert cache: [{}]", e))?,
+            .map_err(|e| anyhow!("Unable to create the relay cert cache: [{}]", e))?,
         RELAYED_CERT_CACHE_TTL,
         RELAYED_CERT_CACHE_TTL,
         RELAYED_CERT_CACHE_TTL,
@@ -617,7 +614,7 @@ fn main() -> Result<(), Error> {
         None => None,
         Some(path) => Some(
             BlackList::load(&path)
-                .map_err(|e| format_err!("Unable to load the blacklist [{:?}]: [{}]", path, e))?,
+                .map_err(|e| anyhow!("Unable to load the blacklist [{:?}]: [{}]", path, e))?,
         ),
     };
     let (