Auto merge of #49094 - alexcrichton:print-step-duration, r=kennytm

ci: Print out how long each step takes on CI

This commit updates CI configuration to inform rustbuild that it should print
out how long each step takes on CI. This'll hopefully allow us to track the
duration of steps over time and follow regressions a bit more closesly (as well
as have closer analysis of differences between two builds).

cc #48829

1 files changed, 4 insertions, 0 deletions

diff --git a/config.toml.example b/config.toml.example
index de7036db29..c9a7b57438 100644
--- a/config.toml.example
+++ b/config.toml.example
@@ -186,6 +186,10 @@
 # essentially skipping stage0 as the local compiler is recompiling itself again.
 #local-rebuild = false
 
+# Print out how long each rustbuild step took (mostly intended for CI and
+# tracking over time)
+#print-step-timings = false
+
 # =============================================================================
 # General install configuration options
 # =============================================================================