diff --git a/ci/README.md b/ci/README.md
index bf6b2a62..b80c3659 100644
--- a/ci/README.md
+++ b/ci/README.md
@@ -12,9 +12,9 @@ repositories used to do for one package tree each.
   generated accessors. The other scripts loop over it rather than naming
   folders themselves.
 - The root `pom.xml` builds every tree in one reactor but is not their parent,
-  so [build-package.ps1](build-package.ps1) sets the version in each tree
-  before it deploys from the root. The examples are built and tested but left
-  out of the deploy.
+  so [build-package.ps1](build-package.ps1) has common-ci set the version in
+  each tree before it deploys from the root. The examples are built and tested
+  but left out of the deploy.
 - [build-project.ps1](build-project.ps1) and
   [run-unit-tests.ps1](run-unit-tests.ps1) use the `dev` profile, so a pull
   request tests the examples against the libraries it changes. The publish
diff --git a/ci/build-package.ps1 b/ci/build-package.ps1
index 38de86fe..75464f09 100644
--- a/ci/build-package.ps1
+++ b/ci/build-package.ps1
@@ -21,19 +21,6 @@ foreach ($package in $NativePackages) {
         }
 }
 
-# The root pom.xml is not the parent of the package trees, so setting the
-# version at the root does not reach them. Set it in each tree, the examples
-# included, so the whole repository carries the version being released.
-foreach ($package in $Packages) {
-    Write-Host "Setting the version of '$($package.Path)' to '$Version'"
-    Push-Location "$RepoName/$($package.Path)"
-    try {
-        mvn versions:set @MavenOptions "-DnewVersion=$Version" -DgenerateBackupPoms=false
-    } finally {
-        Pop-Location
-    }
-}
-
 # The examples are never published. They are left out of the deploy so that
 # the last project in the reactor is one the publishing plugin is configured
 # for. Maven 3 does not exclude a folder's modules with the folder, so each of
@@ -45,21 +32,18 @@ $examples = foreach ($package in $Packages | Where-Object { -not $_.Publish }) {
         ForEach-Object { '!' + [IO.Path]::GetRelativePath($repoPath, $_.DirectoryName).Replace('\', '/') }
 }
 
-# The publishing plugin writes the one bundle for the whole reactor under the
-# first tree that publishes. common-ci copies the bundle from where a single
-# tree puts it, below target at the root, so a link at that path leads to the
-# bundle. The link is made before the deploy, which Linux allows.
-$firstPublishing = ($Packages | Where-Object { $_.Publish } | Select-Object -First 1).Path
-New-Item -ItemType Directory -Force -Path "$RepoName/target" | Out-Null
-New-Item -ItemType SymbolicLink -Force -Path "$RepoName/target/central-publishing" -Target "../$firstPublishing/target/central-publishing" | Out-Null
-
-# common-ci sets the version of the root pom.xml, deploys from the root to a
-# local staging folder with signing, and copies the result and the publishing
-# bundle into the package folder.
+# common-ci sets the version, deploys from the root to a local staging folder
+# with signing, and copies the result and the publishing bundle into the
+# package folder. The root pom.xml is not the parent of the package trees, so
+# setting the version at the root would not reach them. VersionPaths names each
+# tree, the examples included, so the whole repository carries the version
+# being released. The publishing plugin writes the one bundle for the whole
+# reactor under the first tree that publishes, and common-ci finds it there.
 ./java/build-package.ps1 `
     -RepoName $RepoName `
     -Name $Name `
     -Version $Version `
+    -VersionPaths $Packages.Path `
     -ExtraArgs "-DskipNativeBuild=true", "-pl", ($examples -join ',') `
     -JavaGpgKeyPassphrase $Keys['JavaGpgKeyPassphrase'] `
     -JavaPGP $Keys['JavaPGP'] `
diff --git a/ci/copy-test-results.ps1 b/ci/copy-test-results.ps1
index 712c1539..54334215 100644
--- a/ci/copy-test-results.ps1
+++ b/ci/copy-test-results.ps1
@@ -1,8 +1,9 @@
 # Copies the Surefire reports of every module below Path into Destination.
 #
-# common-ci's Java scripts only look one folder down for modules, which finds
-# the modules of a single package tree but not those of this repository, where
-# each tree is a folder of its own and the examples are a folder further down.
+# common-ci's Java scripts copy the reports of the one Maven run they make. The
+# integration and performance tests here make several runs, each in a tree of
+# its own and each reporting into the same folder, so those two scripts copy
+# the reports themselves. The unit tests are one run, which common-ci makes.
 param (
     [Parameter(Mandatory)][string]$Path,
     [Parameter(Mandatory)][string]$Destination,
diff --git a/ci/run-unit-tests.ps1 b/ci/run-unit-tests.ps1
index 562f2948..a5475533 100644
--- a/ci/run-unit-tests.ps1
+++ b/ci/run-unit-tests.ps1
@@ -4,39 +4,21 @@ param(
     [string]$TestResourceKey,
     [string]$DeviceDetection
 )
-$PSNativeCommandUseErrorActionPreference = $false
-
-. "$PSScriptRoot/packages.ps1"
+$ErrorActionPreference = "Stop"
 
 # One run of every test in the reactor that build-project.ps1 built, the
-# examples included. SuperResourceKey is read by the Location and Device
-# Detection examples tests, and LicenseKey by the Device Detection data file
-# update example. The IP Intelligence update example's test is ignored, so it
-# does not need a key of its own.
-Write-Host "Entering '$RepoName'"
-Push-Location $RepoName
-try {
-    Write-Host "Testing '$Name'"
-    mvn surefire:test @MavenOptions -Pdev -DfailIfNoTests=false `
-        "-DTestResourceKey=$TestResourceKey" `
-        "-DSuperResourceKey=$TestResourceKey" `
-        "-DLicenseKey=$DeviceDetection"
-    # Kept here because the commands below run commands of their own, which
-    # would replace Maven's exit code.
-    $MavenExitCode = $LASTEXITCODE
-} finally {
-    Write-Host "Leaving '$RepoName'"
-    Pop-Location
-}
-
-& "$PSScriptRoot/copy-test-results.ps1" -Path $RepoName -Destination "$RepoName/test-results/unit" -Exclude '*ExampleTests*'
-
-# A forked JVM that dies leaves why it died only on the runner, so common-ci
-# logs it. The collector is only in branches of common-ci that have it, so it
-# is called only when present. It does not change the outcome.
-$Collector = [IO.Path]::Combine($pwd, "java", "collect-jvm-crash-evidence.ps1")
-if ($MavenExitCode -ne 0 -and (Test-Path $Collector) -eq $true) {
-    & $Collector -RepoName $RepoName
-}
+# examples included. common-ci runs Surefire from the root, copies the reports
+# of every module at any depth into test-results/unit, leaving out the example
+# tests the integration tests report, and logs why a forked JVM died when one
+# does. The dev profile points the examples at the reactor. SuperResourceKey is
+# read by the Location and Device Detection examples tests, and LicenseKey by
+# the Device Detection data file update example. The IP Intelligence update
+# example's test is ignored, so it does not need a key of its own.
+./java/run-unit-tests.ps1 -RepoName $RepoName -Name $Name -ExtraArgs @(
+    '-Pdev'
+    "-DTestResourceKey=$TestResourceKey"
+    "-DSuperResourceKey=$TestResourceKey"
+    "-DLicenseKey=$DeviceDetection"
+)
 
-exit $MavenExitCode
+exit $LASTEXITCODE