Remove dot from unsafe directory chars

As far as I know, it's safe in every popular filesystem, and so doesn't have to be mangled.

Author: RReverser

src/report.rs

@@ -75,7 +75,6 @@ impl BenchmarkId {
                 .replace("\"", "_")
                 .replace("/", "_")
                 .replace("\\", "_")
-                .replace(".", "_")
                 .replace("*", "_")
         }
 

tests/criterion_tests.rs

@@ -407,15 +407,15 @@ fn test_output_files() {
             "test_output",
             Benchmark::new("output_1", |b| b.iter(|| 10))
                 .with_function("output_2", |b| b.iter(|| 20))
-                .with_function("output_\\/.*\"?", |b| b.iter(|| 30)),
+                .with_function("output_\\/*\"?", |b| b.iter(|| 30)),
         );
     }
 
     // For each benchmark, assert that the expected files are present.
     for x in 0..3 {
         let dir = if x == 2 {
             // Check that certain special characters are replaced with underscores
-            tempdir.path().join(format!("test_output/output_______"))
+            tempdir.path().join(format!("test_output/output______"))
         } else {
             tempdir.path().join(format!("test_output/output_{}", x + 1))
         };