diff --git a/scripts/setup_rust_fork.sh b/scripts/setup_rust_fork.sh
index ada0a8438b13..684a5d072935 100644
--- a/scripts/setup_rust_fork.sh
+++ b/scripts/setup_rust_fork.sh
@@ -41,6 +41,3 @@ popd
 # Allow the testsuite to use llvm tools
 host_triple=$(rustc -vV | grep host | cut -d: -f2 | tr -d " ")
 export LLVM_BIN_DIR="$(rustc --print sysroot)/lib/rustlib/$host_triple/bin"
-
-# local-rebuild should probably set this unconditionally
-export BOOTSTRAP_SKIP_TARGET_SANITY=1
diff --git a/scripts/test_rustc_tests.sh b/scripts/test_rustc_tests.sh
index 046390d458d3..1ccc061aa9d9 100755
--- a/scripts/test_rustc_tests.sh
+++ b/scripts/test_rustc_tests.sh
@@ -77,7 +77,6 @@ rm -r tests/ui/instrument-coverage/
 # missing f16/f128 support
 rm tests/ui/half-open-range-patterns/half-open-range-pats-semantics.rs
 rm tests/ui/asm/aarch64/type-f16.rs
-rm tests/ui/consts/const-float-bits-conv.rs
 
 # optimization tests
 # ==================