target: add -Zunstable-options when querying cfg#587
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Since Rust 1.95,invoking rustc with --target requires -Zunstable-options when used with custom JSON targets. Without this flag, the command fails. Reference: rust-lang/rust@b4e645f rust-lang/rust@8563312 Signed-off-by: Deepesh Varatharajan <Deepesh.Varatharajan@windriver.com>
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Since Rust 1.95,invoking rustc with --target requires
-Zunstable-options when used with custom JSON targets.
Without this flag, the command fails.
Reference:
rust-lang/rust@b4e645f rust-lang/rust@8563312