diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
new file mode 100644
index 0000000..5bd42dc
--- /dev/null
+++ b/.github/workflows/rust.yml
@@ -0,0 +1,21 @@
+name: Rust CI
+
+on:
+  push:
+  pull_request:
+    branches: [ main ]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Build
+      run: cargo build --verbose
+    # - name: Run tests
+    #   run: cargo test --verbose
diff --git a/src/bayesian_network.rs b/src/bayesian_network.rs
index 00ebd67..8caefc3 100644
--- a/src/bayesian_network.rs
+++ b/src/bayesian_network.rs
@@ -10,16 +10,16 @@ use serde_json::{Result, Value};
 ///   this index comes from the order given in `states`
 /// - columns are indexed by the parent's possible values
 ///   this index comes from the order given in the `parents` table
-/// 
+///
 /// Example:
-/// 
+///
 /// Suppose we have a Bayesian network (a) -> (c) <- (b)
 /// - state: {"a" -> ["a1", "a2"], "b" -> ["b1", "b2", "b3"]}
 /// - parents: {"a" -> [], "b" -> [], "c" -> ["a", "b"]}
 /// - cpts: ```{"a" -> [[0.1], [0.9]],        // says "a" has a prior probability  of value "a1" with prob 0.1
-///          "b" -> [[0.3], [0.2], [0.5]], 
-///          "c" -> [[0.1, 0.2, 0.3, 0.4, 0.5, 0.6],      
-///                  [0.9, 0.8, 0.7, 0.6, 0.5, 0.4]]}``` 
+///          "b" -> [[0.3], [0.2], [0.5]],
+///          "c" -> [[0.1, 0.2, 0.3, 0.4, 0.5, 0.6],
+///                  [0.9, 0.8, 0.7, 0.6, 0.5, 0.4]]}```
 /// says Pr(c=c1 | a=a1, b=b1) = 0.1
 ///      Pr(c=c1 | a=a2, b=b1) = 0.4
 ///      Pr(c=c1 | a=a1, b=b3) = 0.3
@@ -33,7 +33,7 @@ type parents = HashMap<String, Vec<String>>;
 pub struct BayesianNetwork {
     network: String,
     variables: Vec<String>,
-    cpts: cpt, 
+    cpts: cpt,
     states: states,
     parents: parents
 }
@@ -44,12 +44,12 @@ impl BayesianNetwork {
     }
 
     fn get_state_index(&self, variable: &String, assignment: &String) -> usize {
-        let cur_s = self.states.get(variable).unwrap_or_else(|| panic!("could not find variable {variable}"));
-        cur_s.into_iter().position(|x| *x == *assignment).unwrap_or_else(|| panic!("could not find assignment {assignment} for variable {variable}"))
+        let cur_s = self.states.get(variable).unwrap_or_else(|| panic!("could not find variable {}", variable));
+        cur_s.into_iter().position(|x| *x == *assignment).unwrap_or_else(|| panic!("could not find assignment {} for variable {}", assignment, variable))
     }
 
     fn get_num_states(&self, variable: &String) -> usize {
-        let cur_s = self.states.get(variable).unwrap_or_else(|| panic!("could not find variable {variable}"));
+        let cur_s = self.states.get(variable).unwrap_or_else(|| panic!("could not find variable {}", variable));
         cur_s.len()
     }
 
@@ -67,7 +67,7 @@ impl BayesianNetwork {
         let p = cur_parents.pop().unwrap();
         let cur_values = self.get_all_assignments(&p);
         let sub = self.parent_h(cur_parents);
-        
+
         // add each assignment onto
         for v in cur_values {
             for i in 0..(sub.len()) {
@@ -142,7 +142,7 @@ impl BayesianNetwork {
 fn test_conditional() {
     let sachs = include_str!("../bayesian_networks/sachs.json");
     let network = BayesianNetwork::from_string(&sachs);
-    let parent_assgn = HashMap::from([ (String::from("Erk"), String::from("HIGH")), 
+    let parent_assgn = HashMap::from([ (String::from("Erk"), String::from("HIGH")),
                                        (String::from("PKA"), String::from("AVG")) ]);
     assert_eq!(network.get_conditional_prob(&String::from("Akt"), &String::from("LOW"), &parent_assgn),0.177105936);
 }
@@ -153,4 +153,4 @@ fn test_parent() {
     let network = BayesianNetwork::from_string(&sachs);
     println!("{:?}", network.parent_assignments(&String::from("Erk")));
     assert!(false);
-}
\ No newline at end of file
+}