icepick: better error handling

crates/icepick/src/cli/mod.rs

@@ -122,7 +122,10 @@ pub fn do_cli_thing() {
     });
     let config_path = config_file.unwrap_or_else(|| "icepick.toml".to_string());
     let config_content = std::fs::read_to_string(config_path).expect("can't read config file");
-    let mut config: Config = toml::from_str(&config_content).expect("config file had invalid toml");
+    let mut config: Config = match toml::from_str(&config_content) {
+        Ok(config) => config,
+        Err(e) => panic!("Error while loading TOML config: {e}"),
+    };
     config.modules.push(ModuleConfig {
         name: "internal".to_string(),
         command_name: Default::default(),

crates/icepick/src/cli/workflow.rs

@@ -87,7 +87,7 @@ impl InvocableOperation {
 
         let result = child.wait_with_output().unwrap();
         if !result.status.success() {
-            panic!("Bad exit: {}", String::from_utf8_lossy(&result.stderr));
+            panic!("Bad exit ({}: {}): {}", &self.binary, &self.operation.name, String::from_utf8_lossy(&result.stderr));
         }
 
         let output = result.stdout;
@@ -133,7 +133,7 @@ impl Workflow {
                     }
                 }
             }
-            panic!("Key was not found: {input}");
+            panic!("Required workflow input was not found: {input}");
         }
 
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