From 52808cef25e8404488e5e8dec9330c90b59df6d0 Mon Sep 17 00:00:00 2001 From: Jacob Hoffman-Andrews Date: Fri, 31 Mar 2023 23:07:51 -0700 Subject: [PATCH] build.rs: print rustc stderr if exit status != 0 --- build.rs | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/build.rs b/build.rs index e60672a76133b..79bec0ea4c30b 100644 --- a/build.rs +++ b/build.rs @@ -1,6 +1,7 @@ use std::env; use std::process::Command; use std::str; +use std::string::String; // List of cfgs this build script is allowed to set. The list is needed to support check-cfg, as we // need to know all the possible cfgs that this script will set. If you need to set another cfg @@ -181,6 +182,13 @@ fn rustc_minor_nightly() -> (u32, bool) { .output() .ok() .expect("Failed to get rustc version"); + if !output.status.success() { + panic!( + "failed to run rustc: {}", + String::from_utf8_lossy(output.stderr.as_slice()) + ); + } + let version = otry!(str::from_utf8(&output.stdout).ok()); let mut pieces = version.split('.');