fix(#179): no declaration in Programs#defects()

src/main/java/org/eolang/lints/Programs.java

@@ -118,10 +118,21 @@ public Programs(final Map<String, XML> map) {
      * Find defects possible defects in the XMIR file.
      * @return All defects found
      */
-    public Collection<Defect> defects() throws IOException {
+    public Collection<Defect> defects() {
         final Collection<Defect> messages = new LinkedList<>();
         for (final Lint<Map<String, XML>> lint : this.lints) {
-            messages.addAll(lint.defects(this.pkg));
+            try {
+                messages.addAll(lint.defects(this.pkg));
+            } catch (final IOException exception) {
+                throw new IllegalStateException(
+                    String.format(
+                        "Failed to find defects in the '%s' package with '%s' lint",
+                        this.pkg,
+                        lint
+                    ),
+                    exception
+                );
+            }
         }
         return messages;
     }

src/test/java/org/eolang/lints/ProgramsTest.java

@@ -31,10 +31,12 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import org.cactoos.io.InputOf;
+import org.cactoos.list.ListOf;
 import org.cactoos.set.SetOf;
 import org.eolang.parser.EoSyntax;
 import org.hamcrest.MatcherAssert;
 import org.hamcrest.Matchers;
+import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.RepeatedTest;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
@@ -84,4 +86,12 @@ void checksInParallel(@Mktmp final Path dir) throws IOException {
         );
     }
 
+    @Test
+    void doesNotThrowIoException() {
+        Assertions.assertDoesNotThrow(
+            () -> new Programs(new ListOf<>()).defects(),
+            "Exception was thrown, but it should not be"
+        );
+    }
+
 }