Cargo.lock

@@ -277,9 +277,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.5.2"
+version = "1.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "13bd41f508810a131401606d54ac32a467c97172d74ba7662562ebba5ad07fa0"
+checksum = "260e51e7efe62b592207e9e13a68e43692a7a279171d6ba57abd208bf23645ad"
 
 [[package]]
 name = "percent-encoding"
@@ -409,9 +409,9 @@ dependencies = [
 
 [[package]]
 name = "ring"
-version = "0.16.18"
+version = "0.16.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70017ed5c555d79ee3538fc63ca09c70ad8f317dcadc1adc2c496b60c22bb24f"
+checksum = "952cd6b98c85bbc30efa1ba5783b8abf12fec8b3287ffa52605b9432313e34e4"
 dependencies = [
  "cc",
  "libc",