diff --git a/Cargo.toml b/Cargo.toml
index ff0d393..8dbde44 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ license = "MIT"
 
 [dependencies]
 # tokio = { version = "1", features = ["full"] }
-tokio = { version = "1", features = ["time", "macros", "rt", "rt-multi-thread"] }
+tokio = { version = "1", default-features = false, features = ["time", "macros", "rt", "rt-multi-thread"] }
 futures = "0.3"
 log = { version = "0.4", features = ["max_level_debug", "release_max_level_info"] }
 env_logger = "0.10"
@@ -39,8 +39,12 @@ opt-level = 0
 
 [profile.release]
 codegen-units = 1
-opt-level = 3
+# opt-level = 3
+opt-level = "z"
 lto = "fat"
-# strip = "symbols"
-strip = true
-panic = "abort"
\ No newline at end of file
+strip = "symbols"
+# strip = true
+panic = "abort"
+debug = false
+debug-assertions = false
+overflow-checks = false
\ No newline at end of file
diff --git a/gitlabapi/src/utils.rs b/gitlabapi/src/utils.rs
index 17d6388..e6188bb 100644
--- a/gitlabapi/src/utils.rs
+++ b/gitlabapi/src/utils.rs
@@ -32,7 +32,8 @@ impl GitlabJOB {
             },
 
             Err(error) => {
-                panic!("Couldn't construct the api caller: {}", error)
+                error!("Couldn't construct the api caller: {}", error);
+                std::process::exit(11)
             }
         }
     }
@@ -53,8 +54,8 @@ impl GitlabJOB {
         match reqwest::Url::parse(&new_uri) {
             Ok(url) => url,
             Err(error) => {
-                // error!("Error while parsing url: {}", new_uri);
-                panic!("Error while parsing url \"{}\": {}", new_uri, error)
+                error!("Error while parsing url \"{}\": {}", new_uri, error);
+                std::process::exit(12)
             }
         }
     }
diff --git a/mailsender/Cargo.toml b/mailsender/Cargo.toml
index 8b13471..6a53e49 100644
--- a/mailsender/Cargo.toml
+++ b/mailsender/Cargo.toml
@@ -11,7 +11,7 @@ merge = "0.1"
 serde = { version = "1.0", features = ["derive"] }
 log = { version = "0.4", features = ["max_level_debug", "release_max_level_info"] }
 # tokio = { version = "1", features = ["full"] }
-tokio = { version = "1", features = ["time", "macros"] }
+tokio = { version = "1", default-features = false, features = ["time", "macros"] }
 
 configloader = { path = "../configloader"}
 
diff --git a/mailsender/src/tests.rs b/mailsender/src/tests.rs
index 0018f2a..942a456 100644
--- a/mailsender/src/tests.rs
+++ b/mailsender/src/tests.rs
@@ -121,11 +121,11 @@ This is a <b>test message</b>. :-)
         if let Some(relay) = mailsender.relay {
             match relay.send(&mail_message) {
                 Ok(_) => debug!("Message 1 sent"),
-                Err(err) => panic!("{}", err),
+                Err(err) => error!("{}", err),
             };
             match relay.send(&mail_message2) {
                 Ok(_) => debug!("Message 2 sent"),
-                Err(err) => panic!("{}", err),
+                Err(err) => error!("{}", err),
             };
         };
     }
diff --git a/mailsender/src/utils.rs b/mailsender/src/utils.rs
index 66ebeb1..b78692e 100644
--- a/mailsender/src/utils.rs
+++ b/mailsender/src/utils.rs
@@ -41,7 +41,8 @@ impl SmtpUtils for SmtpConfig {
         destination: &Option<String>,
     ) -> Message {
         if !self.is_valid() {
-            panic!("Smtp configuration is invalid")
+            error!("Smtp configuration is invalid");
+            std::process::exit(31)
         };
 
         let concat_subject = format!(
@@ -81,7 +82,10 @@ impl SmtpUtils for SmtpConfig {
             .body(message)
         {
             Ok(message) => message,
-            Err(_) => panic!("Couldn't build a mail message"),
+            Err(_) => {
+                error!("Couldn't build a mail message");
+                std::process::exit(32)
+            }
         }
     }
 }
diff --git a/src/main.rs b/src/main.rs
index a6eb319..8b9bec8 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -61,7 +61,10 @@ async fn main() {
 
     let config = match Config::load_config() {
         Ok(conf) => conf,
-        Err(err) => panic!("Error loading configurations. {}", err),
+        Err(err) => {
+            error!("Error loading configurations. {}", err);
+            std::process::exit(1)
+        }
     };
 
     let mail_relay_handle = tokio::spawn(utils::mailrelay_buid(config.clone()));
@@ -73,7 +76,10 @@ async fn main() {
         Some(group_id) => api.get_jobs(GroupID(group_id), JobScope::Manual).await,
         None => match config.project_id {
             Some(proj_id) => api.get_jobs(ProjectID(proj_id), JobScope::Manual).await,
-            None => panic!("There's no project to scan for jobs."),
+            None => {
+                error!("There's no project to scan for jobs.");
+                std::process::exit(2)
+            }
         },
     };
 
@@ -101,7 +107,7 @@ async fn main() {
         JobScope::Pending,
         JobScope::Running,
         JobScope::WaitingForResource,
-        // JobScope::Manual,
+        JobScope::Manual,
     ];
 
     while let Some(result) = actions.next().await {
diff --git a/src/tests.rs b/src/tests.rs
index 26bcc1a..0858887 100644
--- a/src/tests.rs
+++ b/src/tests.rs
@@ -3,6 +3,7 @@ mod integration_tests {
     use crate::*;
     // use std::io::Write;
     use log::debug;
+    use std::process::exit;
 
     fn init() {
         let _ = env_logger::builder()
@@ -22,7 +23,10 @@ mod integration_tests {
 
         let token_trigger = match env::var("TESTE_TOKENTRIG") {
             Ok(value) => value,
-            Err(_) => panic!("No token to trigger a new job"),
+            Err(_) => {
+                error!("No token to trigger a new job");
+                exit(1)
+            }
         };
 
         init();
@@ -47,7 +51,10 @@ mod integration_tests {
 
         match api.post_json(url, json_post).await {
             Ok(resp) => debug!("New pipeline created:\n{:?}", resp),
-            Err(error) => panic!("Failed to create new pipeline: {}", error),
+            Err(error) => {
+                error!("Failed to create new pipeline: {}", error);
+                exit(1)
+            }
         }
     }