我正在尝试使用openssl：
# Cargo.toml
openssl = "0.10.4"
错误：
error: failed to select a version for `openssl-sys` (required by `openssl`):
all possible versions conflict with previously selected versions of `openssl-sys`
version 0.9.24 in use by openssl-sys v0.9.24
possible versions to select: 0.9.26
好的，我正在尝试0.9.26
# Cargo.toml
openssl = "0.9.26"
和
error: no matching version `^0.9.26` found for package `openssl` (required by `test1_app`)
location searched: registry `https://github.com/rust-lang/crates.io-index`
versions found: 0.10.4, 0.10.3, 0.10.2, ...