Example:

https://evergreen.mongodb.com/task/libmongocrypt_amazon2_build_and_test_asan_patch_e93d4f9c9e3842817cc8ab7c6150498a930a0306_5fd1313056234377e1264aa2_20_12_09_20_19_13

This may be due to a recent change in the host. Solving it might just be a matter of using clang from the MongoDB toolchain.