Actually, require rsa 0.7.1.

rsa 0.7.0 has been yanked.

Cargo.lock

@@ -2725,9 +2725,9 @@ dependencies = [
 
 [[package]]
 name = "rsa"
-version = "0.7.0"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96144aaefe4fa4c1846c404d1ccc3dc45c9b15c2e41591597294cb7ccc2dbfd7"
+checksum = "b0ecc3307be66bfb3574577895555bacfb9a37a8d5cd959444b72ff02495c618"
 dependencies = [
  "byteorder",
  "digest 0.10.5",

crates/tor-llcrypto/Cargo.toml

@@ -35,7 +35,7 @@ hex = "0.4"
 old_rand_core = { package = "rand_core", version = "0.5.1" }
 openssl = { version = "0.10.30", optional = true }
 rand_core = "0.6.2"
-rsa = "0.7.0"
+rsa = "0.7.1"
 serde = "1.0.103"
 sha-1 = "0.10.0"
 sha2 = "0.10.0"