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-rw-r--r--src/libstore/build/local-derivation-goal.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/libstore/build/local-derivation-goal.cc b/src/libstore/build/local-derivation-goal.cc
index 3fc156108..8d245f84a 100644
--- a/src/libstore/build/local-derivation-goal.cc
+++ b/src/libstore/build/local-derivation-goal.cc
@@ -948,7 +948,7 @@ void LocalDerivationGoal::startBuilder()
FdSource source(builderOut.readSide.get());
auto ex = readError(source);
ex.addTrace({}, "while setting up the build environment");
- throw;
+ throw ex;
}
debug("sandbox setup: " + msg);
msgs.push_back(std::move(msg));