Fails with non-boolean LTO setting

[kozik47]

In my Cargo.toml:

[profile.release]
lto = "fat"

Running cargo sysroot yields:

Error: ./Cargo.toml

Caused by:
    0: Parse(Error { inner: ErrorInner { kind: Custom, line: Some(17), col: 6, at: Some(301), message: "invalid type: string \"fat\", expected a boolean", key: ["profile", "release", "lto"] } })
    1: invalid type: string "fat", expected a boolean for key `profile.release.lto` at line 18 column 7

My current workaround is:

• set lto = true in my Cargo.toml
• run cargo sysroot
• set lto = "fat" in target/sysroot/Cargo.toml
• run cargo build inside target/sysroot to get the sysroot rebuilt with my desired lto setting