Enable unstable feature reqwest/http3 in CI (#1261)

For dev and release build, so that pre-built binaries of
`cargo-binstall` can utilize http3 protocol.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

crates/bin/Cargo.toml

@@ -67,6 +67,10 @@ native-tls = ["binstalk/native-tls"]
 
 trust-dns = ["binstalk/trust-dns"]
 
+# Experimental HTTP/3 client, this would require `--cfg reqwest_unstable`
+# to be passed to `rustc`.
+http3 = ["binstalk/http3"]
+
 zstd-thin = ["binstalk/zstd-thin"]
 cross-lang-fat-lto = ["binstalk/cross-lang-fat-lto"]
 

crates/binstalk-downloader/Cargo.toml

@@ -23,6 +23,9 @@ generic-array = "0.14.7"
 httpdate = "1.0.2"
 reqwest = { version = "0.11.18", features = ["stream", "gzip", "brotli", "deflate"], default-features = false }
 percent-encoding = "2.2.0"
+# Pull in due to https://github.com/seanmonstar/reqwest/pull/1846 , please
+# remove this once new reqwest release is out.
+quinn = { version = "0.10", default-features = false, features = ["runtime-tokio"], optional = true }
 serde = { version = "1.0.163", features = ["derive"], optional = true }
 serde-tuple-vec-map = "1.0.1"
 serde_json = { version = "1.0.96", optional = true }
@@ -77,6 +80,10 @@ native-tls = ["__tls", "reqwest/native-tls", "trust-dns-resolver?/dns-over-nativ
 # Enable trust-dns-resolver so that features on it will also be enabled.
 trust-dns = ["trust-dns-resolver", "reqwest/trust-dns"]
 
+# Experimental HTTP/3 client, this would require `--cfg reqwest_unstable`
+# to be passed to `rustc`.
+http3 = ["reqwest/http3", "dep:quinn"]
+
 zstd-thin = ["zstd/thin"]
 
 cross-lang-fat-lto = ["zstd/fat-lto"]

crates/binstalk/Cargo.toml

@@ -65,6 +65,10 @@ native-tls = ["binstalk-downloader/native-tls"]
 
 trust-dns = ["binstalk-downloader/trust-dns"]
 
+# Experimental HTTP/3 client, this would require `--cfg reqwest_unstable`
+# to be passed to `rustc`.
+http3 = ["binstalk-downloader/http3"]
+
 zstd-thin = ["binstalk-downloader/zstd-thin"]
 cross-lang-fat-lto = ["binstalk-downloader/cross-lang-fat-lto"]