diff --git a/build.c b/build.c
index c422951f..1011bf1f 100644
--- a/build.c
+++ b/build.c
@@ -38,7 +38,6 @@ Bool IsDirty(D_Tag tag)
  * Step
  * ========================== */
 
-
 typedef struct Step Step;
 typedef struct StepList StepList;
 
@@ -313,8 +312,6 @@ void BuildStepMsvcCompileCommand(Step *s)
 
 void OnBuild(StringList cli_args)
 {
-    OS_TimeStamp start = OS_GetTimeStamp();
-
     arena = ArenaAlloc(Gigabyte(64));
     store = D_StoreAlloc();
     worker_shared = ArenaPush(&arena, WorkerSharedState);
@@ -352,7 +349,7 @@ void OnBuild(StringList cli_args)
         ArgState arg_state = ArgState_None;
         for (StringListNode *n = cli_args.first; n; n = n->next) {
             String arg = n->string;
-              if (n != cli_args.first) {
+            if (n != cli_args.first) {
                 switch (arg_state) {
                     case ArgState_OutputDir:
                     {
@@ -395,27 +392,29 @@ void OnBuild(StringList cli_args)
         OS_CreateDirAtAbsPath(out_bin_dir_path);
     }
 
-    SH_Print(Lit("------------------------------\n"));
-    SH_Print(Lit("Power Play build\n"));
     {
+        SH_Print(Lit("------------------------------\n"));
         String compiler = { 0 };
         String compiler_loc = { 0 };
-        SH_CommandResult where_res = { 0 };
-        if (arg_msvc) {
-            compiler = Lit("Msvc");
-            where_res = SH_RunCommandCaptureOutput(&arena, Lit("where cl.exe"), true);
-        } else {
-            compiler = Lit("Clang");
-            where_res = SH_RunCommandCaptureOutput(&arena, Lit("where clang.exe"), true);
+        {
+            SH_CommandResult where_res = { 0 };
+            if (arg_msvc) {
+                compiler = Lit("Msvc");
+                where_res = SH_RunCommandCaptureOutput(&arena, Lit("where cl.exe"), true);
+            } else {
+                compiler = Lit("Clang");
+                where_res = SH_RunCommandCaptureOutput(&arena, Lit("where clang.exe"), true);
+            }
+            compiler_loc = where_res.error ? Lit("Not found") : StringReplace(&arena, where_res.output, Lit("\n"), Lit(""));
         }
-        compiler_loc = where_res.error ? Lit("Not found") : StringReplace(&arena, where_res.output, Lit("\n"), Lit(""));
-        SH_PrintF(Lit("[Compiler: %F] (%F)\n"), FmtStr(compiler), FmtStr(compiler_loc));
+        SH_PrintF(Lit("Compiler path: %F\n"), FmtStr(compiler_loc));
+        SH_PrintF(Lit("Build path: \"%F\"\n"), FmtStr(out_bin_dir_path));
+        SH_PrintF(Lit("[%F]\n"), FmtStr(compiler));
+        if (arg_asan) SH_Print(Lit("[Asan Enabled]\n"));
+        if (arg_profiling) SH_Print(Lit("[Profiling]\n"));
+        if (arg_developer) SH_Print(Lit("[Developer build]\n"));
+        SH_Print(Lit("------------------------------\n\n"));
     }
-    if (arg_asan) SH_Print(Lit("[Asan Enabled]\n"));
-    if (arg_profiling) SH_Print(Lit("[Profiling]\n"));
-    if (arg_developer) SH_Print(Lit("[Developer build]\n"));
-    SH_PrintF(Lit("Building to \"%F\"\n"), FmtStr(out_bin_dir_path));
-    SH_Print(Lit("------------------------------\n\n"));
 
     /* ========================== *
      * Constants
@@ -613,7 +612,7 @@ void OnBuild(StringList cli_args)
     }
 
     /* ========================== *
-     * Generate root dependencies
+     * Examine build hash
      * ========================== */
 
     {
@@ -636,7 +635,7 @@ void OnBuild(StringList cli_args)
         }
 
         if (build_hash != old_build_hash) {
-            SH_Print(Lit("Builder exe or build args have changed, rebuilding all.\n"));
+            SH_Print(Lit("Builder exe or build args have changed, forcing complete rebuild.\n"));
             force_rebuild = true;
             String data = StringFromStruct(&build_hash);
             D_ClearWrite(build_hash_file, data);
@@ -913,7 +912,6 @@ void OnBuild(StringList cli_args)
         }
     }
 
-
     /* ========================== *
      * Build step: Link
      * ========================== */
@@ -1026,10 +1024,6 @@ void OnBuild(StringList cli_args)
 
     D_WriteStoreToHistFile(&store, hist_path);
 
-    OS_TimeStamp end = OS_GetTimeStamp();
-    F64 seconds = OS_SecondsFromTimeStamp(end - start);
-    SH_PrintF(Lit("Finished in %F seconds\n"), FmtF64P(seconds, 5));
-
     ShutdownWorkers();
 
 #if 0
diff --git a/src/arena.c b/src/arena.c
index bc077a60..4e030dd4 100644
--- a/src/arena.c
+++ b/src/arena.c
@@ -46,6 +46,7 @@ void arena_release(struct arena *arena)
 {
     __prof;
     __proffree(arena->base);
+    ASAN_UNPOISON(arena->base, arena->committed);
     sys_memory_release(arena->base);
 }