diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index efc6d05e..60933a1e 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -15,10 +15,10 @@ jobs:
     with:
       linux_os_versions: '["noble", "jammy", "focal", "rhel-ubi9"]'
       linux_pre_build_command: command -v apt >/dev/null 2>&1 && apt update && apt install -y libsqlite3-dev libncurses-dev || (command -v yum >/dev/null 2>&1 && yum update -y && yum install -y sqlite-devel ncurses-devel)
-      linux_build_command: 'swift build'
+      linux_build_command: 'swift test --no-parallel'
       linux_swift_versions: '["nightly-main", "nightly-6.2"]'
       windows_swift_versions: '["nightly-main"]'
-      windows_build_command: 'swift build'
+      windows_build_command: 'swift test --no-parallel'
   soundness:
     name: Soundness
     uses: swiftlang/github-workflows/.github/workflows/soundness.yml@main
diff --git a/Tests/SwiftBuildTests/ConsoleCommands/BuildCommandTests.swift b/Tests/SwiftBuildTests/ConsoleCommands/BuildCommandTests.swift
index 7bb4e1f5..002298bd 100644
--- a/Tests/SwiftBuildTests/ConsoleCommands/BuildCommandTests.swift
+++ b/Tests/SwiftBuildTests/ConsoleCommands/BuildCommandTests.swift
@@ -17,7 +17,7 @@ import SWBUtil
 import Testing
 import SwiftBuildTestSupport
 
-@Suite(.skipHostOS(.windows))
+@Suite(.skipHostOS(.windows), .skipInGitHubActions("failing in the GitHub actions runner environment"))
 fileprivate struct BuildCommandTests {
     private let commandSequenceCodec: any CommandSequenceEncodable = LLVMStyleCommandCodec()
 
diff --git a/Tests/SwiftBuildTests/ConsoleCommands/CreateXCFrameworkCommandTests.swift b/Tests/SwiftBuildTests/ConsoleCommands/CreateXCFrameworkCommandTests.swift
index dfd9a23e..47d19412 100644
--- a/Tests/SwiftBuildTests/ConsoleCommands/CreateXCFrameworkCommandTests.swift
+++ b/Tests/SwiftBuildTests/ConsoleCommands/CreateXCFrameworkCommandTests.swift
@@ -17,7 +17,7 @@ import SWBTestSupport
 
 // Note: The functionality of this class is heavily unit tested in `XCFrameworkTests.swift`. These tests are only to ensure that the command is indeed hooked up and registered properly.
 
-@Suite
+@Suite(.skipInGitHubActions("failing in the GitHub actions runner environment"))
 fileprivate struct CreateXCFrameworkCommandTests {
     @Test
     func commandInvocation() async throws {
diff --git a/Tests/SwiftBuildTests/ConsoleCommands/GeneralCommandsTests.swift b/Tests/SwiftBuildTests/ConsoleCommands/GeneralCommandsTests.swift
index c1e3137e..09f3fffa 100644
--- a/Tests/SwiftBuildTests/ConsoleCommands/GeneralCommandsTests.swift
+++ b/Tests/SwiftBuildTests/ConsoleCommands/GeneralCommandsTests.swift
@@ -15,7 +15,7 @@ import SwiftBuild
 import SWBTestSupport
 import SWBUtil
 
-@Suite
+@Suite(.skipInGitHubActions("failing in the GitHub actions runner environment"))
 fileprivate struct GeneralCommandsTests {
     @Test(.skipHostOS(.windows), // PTY not supported on Windows
         .requireHostOS(.macOS)) // something with terminal echo is different on macOS vs Linux
diff --git a/Tests/SwiftBuildTests/ConsoleCommands/ServiceConsoleTests.swift b/Tests/SwiftBuildTests/ConsoleCommands/ServiceConsoleTests.swift
index c7712f2f..8266297f 100644
--- a/Tests/SwiftBuildTests/ConsoleCommands/ServiceConsoleTests.swift
+++ b/Tests/SwiftBuildTests/ConsoleCommands/ServiceConsoleTests.swift
@@ -19,7 +19,7 @@ import SWBUtil
 import WinSDK
 #endif
 
-@Suite
+@Suite(.skipInGitHubActions("failing in the GitHub actions runner environment"))
 fileprivate struct ServiceConsoleTests {
     @Test
     func emptyInput() async throws {
diff --git a/Tests/SwiftBuildTests/ConsoleCommands/SessionCommandsTests.swift b/Tests/SwiftBuildTests/ConsoleCommands/SessionCommandsTests.swift
index 6dc5fece..5e8c5bb3 100644
--- a/Tests/SwiftBuildTests/ConsoleCommands/SessionCommandsTests.swift
+++ b/Tests/SwiftBuildTests/ConsoleCommands/SessionCommandsTests.swift
@@ -14,7 +14,7 @@ import SWBTestSupport
 import Testing
 import SWBUtil
 
-@Suite
+@Suite(.skipInGitHubActions("failing in the GitHub actions runner environment"))
 fileprivate struct SessionCommandsTests {
     @Test(.skipHostOS(.windows), // PTY not supported on Windows
         .requireHostOS(.macOS)) // something with terminal echo is different on macOS vs Linux
diff --git a/Tests/SwiftBuildTests/ConsoleCommands/XcodeCommandsTests.swift b/Tests/SwiftBuildTests/ConsoleCommands/XcodeCommandsTests.swift
index 78173376..b824666a 100644
--- a/Tests/SwiftBuildTests/ConsoleCommands/XcodeCommandsTests.swift
+++ b/Tests/SwiftBuildTests/ConsoleCommands/XcodeCommandsTests.swift
@@ -14,7 +14,7 @@ import SWBTestSupport
 import Testing
 import SWBUtil
 
-@Suite
+@Suite(.skipInGitHubActions("failing in the GitHub actions runner environment"))
 fileprivate struct XcodeCommandsTests {
     @Test(.skipHostOS(.windows), // PTY not supported on Windows
         .requireHostOS(.macOS)) // something with terminal echo is different on macOS vs Linux