Use nextest profiles to configure CI (#17220)

This centralises the configuration and allows certain overrides to be CI
specific.

.config/nextest.toml

@@ -3,6 +3,30 @@
 # Terminate after 120s as a stop-gap measure to terminate on deadlock.
 slow-timeout =  { period = "10s", terminate-after = 12 }
 
+[profile.ci-linux]
+slow-timeout =  { period = "10s", terminate-after = 12 }
+test-threads = 20
+status-level = "skip"
+final-status-level = "slow"
+failure-output = "immediate-final"
+fail-fast = false
+
+[profile.ci-macos]
+slow-timeout =  { period = "10s", terminate-after = 12 }
+test-threads = 12
+status-level = "skip"
+final-status-level = "slow"
+failure-output = "immediate-final"
+fail-fast = false
+
+[profile.ci-windows]
+slow-timeout =  { period = "10s", terminate-after = 12 }
+test-threads = 20
+status-level = "skip"
+final-status-level = "slow"
+failure-output = "immediate-final"
+fail-fast = false
+
 [test-groups]
 serial = { max-threads = 1 }
 

.github/workflows/ci.yml

@@ -290,7 +290,7 @@ jobs:
             --cargo-profile fast-build \
             --features python-patch,native-auth,secret-service \
             --workspace \
-            --status-level skip --failure-output immediate-final --no-fail-fast -j 20 --final-status-level slow
+            --profile ci-linux
 
   cargo-test-macos:
     timeout-minutes: 20
@@ -333,7 +333,7 @@ jobs:
             --no-default-features \
             --features python,python-managed,pypi,git,git-lfs,performance,crates-io,native-auth,apple-native \
             --workspace \
-            --status-level skip --failure-output immediate-final --no-fail-fast -j 12 --final-status-level slow
+            --profile ci-macos
 
   cargo-test-windows:
     timeout-minutes: 15
@@ -389,7 +389,7 @@ jobs:
             --no-default-features \
             --features python,pypi,python-managed,native-auth,windows-native \
             --workspace \
-            --status-level skip --failure-output immediate-final --no-fail-fast -j 20 --final-status-level slow
+            --profile ci-windows
 
   # Separate jobs for the nightly crate
   windows-trampoline-check: