Only build with gcc for now

Newer clang has issues with valgrind wrt DWARF5 support, and two builds
may hit a race condition with the repository update anyway.

.github/workflows/benchmark.yml

@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        compiler: [g++, clang++]
+        compiler: [g++]
         benchResultsRepo:
           - { name: "luau-lang/benchmark-data", branch: "main" }
 

bench/bench.py

@@ -104,8 +104,7 @@ def getVmOutput(cmd):
             file = open(os.path.join(scriptdir, "callgrind.out"), "r")
             lines = file.readlines()
             return getCallgrindOutput(lines)
-        except e:
-            print(e)
+        except:
             return ""
     else:
         with subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True, cwd=scriptdir) as p: