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Rollup merge of rust-lang#70350 - workingjubilee:patch-1, r=Dylan-DPC
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Request "-Z unstable-options" for unstable options

Explicitly requests the "-Z unstable-options" flag if someone attempts to use
a cargo option gated by it. This enhances discoverability, particularly in the
instance where the user is on the nightly compiler but isn't using the flag.

This relates to, but does not end with or resolve, issue rust-lang#65770.
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Centril authored Mar 24, 2020
2 parents 8d4b5ff + eaa6488 commit f8ec23f
Showing 1 changed file with 1 addition and 1 deletion.
2 changes: 1 addition & 1 deletion src/libtest/cli.rs
Original file line number Diff line number Diff line change
Expand Up @@ -213,7 +213,7 @@ macro_rules! unstable_optflag {
let opt = $matches.opt_present($option_name);
if !$allow_unstable && opt {
return Err(format!(
"The \"{}\" flag is only accepted on the nightly compiler",
"The \"{}\" flag is only accepted on the nightly compiler with -Z unstable-options",
$option_name
));
}
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