13 //     else. Also enabled unconditionally on nightly, in which case the
15 //     nightly-only proc_macro API.
24 //     nightly, unless `-Z allow-feature` in RUSTFLAGS disallows unstable
28 //     Implement the semver exempt API in terms of the nightly-only proc_macro
29 //     API. Enabled when using procmacro2_semver_exempt on a nightly compiler.
87     if version.nightly || !semver_exempt {  in main()
91     if version.nightly && feature_allowed("proc_macro_span") {  in main()
95     if semver_exempt && version.nightly {  in main()
112     nightly: bool,  field
119     let nightly = version.contains("nightly") || version.contains("dev");  in rustc_version()  localVariable
125     Some(RustcVersion { minor, nightly })  in rustc_version()