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-rw-r--r--src/nix/run.cc4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/nix/run.cc b/src/nix/run.cc
index 8e30264c0..d790979a4 100644
--- a/src/nix/run.cc
+++ b/src/nix/run.cc
@@ -197,10 +197,10 @@ void chrootHelper(int argc, char * * argv)
Finally freeCwd([&]() { free(cwd); });
if (chroot(tmpDir.c_str()) == -1)
- throw SysError(format("chrooting into '%s'") % tmpDir);
+ throw SysError("chrooting into '%s'", tmpDir);
if (chdir(cwd) == -1)
- throw SysError(format("chdir to '%s' in chroot") % cwd);
+ throw SysError("chdir to '%s' in chroot", cwd);
} else
if (mount(realStoreDir.c_str(), storeDir.c_str(), "", MS_BIND, 0) == -1)
throw SysError("mounting '%s' on '%s'", realStoreDir, storeDir);