1 files changed, 0 insertions, 113 deletions
diff --git a/vendor/io-lifetimes/build.rs b/vendor/io-lifetimes/build.rs
deleted file mode 100644
index 2fc2a3817..000000000
--- a/vendor/io-lifetimes/build.rs
+++ /dev/null
@@ -1,113 +0,0 @@
-use std::env::var;
-use std::io::Write;
-
-fn main() {
-    // I/O safety is stabilized in Rust 1.63.
-    if has_io_safety() {
-        use_feature("io_safety_is_in_std")
-    }
-
-    // Work around
-    // <https://github.com/rust-lang/rust/issues/103306>.
-    use_feature_or_nothing("wasi_ext");
-
-    // Rust 1.56 and earlier don't support panic in const fn.
-    if has_panic_in_const_fn() {
-        use_feature("panic_in_const_fn")
-    }
-
-    // Don't rerun this on changes other than build.rs, as we only depend on
-    // the rustc version.
-    println!("cargo:rerun-if-changed=build.rs");
-}
-
-fn use_feature_or_nothing(feature: &str) {
-    if has_feature(feature) {
-        use_feature(feature);
-    }
-}
-
-fn use_feature(feature: &str) {
-    println!("cargo:rustc-cfg={}", feature);
-}
-
-/// Test whether the rustc at `var("RUSTC")` supports the given feature.
-fn has_feature(feature: &str) -> bool {
-    can_compile(format!(
-        "#![allow(stable_features)]\n#![feature({})]",
-        feature
-    ))
-}
-
-/// Test whether the rustc at `var("RUSTC")` can compile the given code.
-fn can_compile<T: AsRef<str>>(test: T) -> bool {
-    use std::process::Stdio;
-
-    let out_dir = var("OUT_DIR").unwrap();
-    let rustc = var("RUSTC").unwrap();
-    let target = var("TARGET").unwrap();
-
-    // Use `RUSTC_WRAPPER` if it's set, unless it's set to an empty string,
-    // as documented [here].
-    // [here]: https://doc.rust-lang.org/cargo/reference/environment-variables.html#environment-variables-cargo-reads
-    let wrapper = var("RUSTC_WRAPPER")
-        .ok()
-        .and_then(|w| if w.is_empty() { None } else { Some(w) });
-
-    let mut cmd = if let Some(wrapper) = wrapper {
-        let mut cmd = std::process::Command::new(wrapper);
-        // The wrapper's first argument is supposed to be the path to rustc.
-        cmd.arg(rustc);
-        cmd
-    } else {
-        std::process::Command::new(rustc)
-    };
-
-    cmd.arg("--crate-type=rlib") // Don't require `main`.
-        .arg("--emit=metadata") // Do as little as possible but still parse.
-        .arg("--target")
-        .arg(target)
-        .arg("--out-dir")
-        .arg(out_dir); // Put the output somewhere inconsequential.
-
-    // If Cargo wants to set RUSTFLAGS, use that.
-    if let Ok(rustflags) = var("CARGO_ENCODED_RUSTFLAGS") {
-        if !rustflags.is_empty() {
-            for arg in rustflags.split('\x1f') {
-                cmd.arg(arg);
-            }
-        }
-    }
-
-    let mut child = cmd
-        .arg("-") // Read from stdin.
-        .stdin(Stdio::piped()) // Stdin is a pipe.
-        .stderr(Stdio::null()) // Errors from feature detection aren't interesting and can be confusing.
-        .spawn()
-        .unwrap();
-
-    writeln!(child.stdin.take().unwrap(), "{}", test.as_ref()).unwrap();
-
-    child.wait().unwrap().success()
-}
-
-/// Test whether the rustc at `var("RUSTC")` supports panic in `const fn`.
-fn has_panic_in_const_fn() -> bool {
-    can_compile("const fn foo() {{ panic!() }}")
-}
-
-/// Test whether the rustc at `var("RUSTC")` supports the I/O safety feature.
-fn has_io_safety() -> bool {
-    can_compile(
-        "\
-    #[cfg(unix)]\n\
-    use std::os::unix::io::OwnedFd as Owned;\n\
-    #[cfg(target_os = \"wasi\")]\n\
-    use std::os::wasi::io::OwnedFd as Owned;\n\
-    #[cfg(windows)]\n\
-    use std::os::windows::io::OwnedHandle as Owned;\n\
-    \n\
-    pub type Success = Owned;\n\
-    ",
-    )
-}