Ubuntu doens't have a CPU governor.

src/makeReleaseMain.cpp

@@ -14,6 +14,7 @@
 #include "TemporaryFile.hpp"
 #include "json_variant.hpp"
 #include "GithubResponseHeaders.hpp"
+#include "Finally.hpp"
 
 using namespace std;
 using namespace pipedal;
@@ -37,12 +38,15 @@ std::string psystem(const std::string &command)
     std::string cmdRedirected = command + " 2>&1";
     std::array<char, 128> buffer;
     std::string result;
-    std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmdRedirected.c_str(), "r"), pclose);
+    FILE *pipe = popen(cmdRedirected.c_str(), "r");
     if (!pipe)
     {
         throw std::runtime_error("popen() failed!");
     }
-    while (fgets(buffer.data(), buffer.size(), pipe.get()) != nullptr)
+    Finally ([pipe]() {
+        pclose(pipe);
+    });
+    while (fgets(buffer.data(), buffer.size(), pipe) != nullptr)
     {
         result += buffer.data();
     }