diff --git a/src/testRunner/externalCompileRunner.ts b/src/testRunner/externalCompileRunner.ts
index f1bed96092676..b720ba61f2c0f 100644
--- a/src/testRunner/externalCompileRunner.ts
+++ b/src/testRunner/externalCompileRunner.ts
@@ -208,7 +208,8 @@ ${sanitizeDockerfileOutput(result.stderr.toString())}`;
         return result.replace(/^.*(\] (Starting)|(Finished)).*$/gm, "") // "gulp" task start/end messages (nondeterministic order)
             .replace(/^.*(\] . (finished)|(started)).*$/gm, "") // "just" task start/end messages (nondeterministic order)
             .replace(/^.*\] Respawned to PID: \d+.*$/gm, "") // PID of child is OS and system-load dependent (likely stableish in a container but still dangerous)
-            .replace(/\n+/g, "\n");
+            .replace(/\n+/g, "\n")
+            .replace(/\/tmp\/yarn--.*?\/node/g, "");
     }
 
     function sanitizeTimestamps(result: string): string {
diff --git a/tests/baselines/reference/docker/office-ui-fabric.log b/tests/baselines/reference/docker/office-ui-fabric.log
index a2d214eb74c53..01b5c958a93c9 100644
--- a/tests/baselines/reference/docker/office-ui-fabric.log
+++ b/tests/baselines/reference/docker/office-ui-fabric.log
@@ -270,12 +270,12 @@ Standard error:
 info cli using local version of lerna
 lerna notice cli vX.X.X
 lerna info Executing command in 61 packages: "yarn run build"
-@fluentui/ability-attributes: npm WARN lifecycle The node binary used for scripts is /tmp/yarn--1582311759530-0.3658619549987754/node but npm is using /usr/local/bin/node itself. Use the `--scripts-prepend-node-path` option to include the path for the node binary npm was executed with.
+@fluentui/ability-attributes: npm WARN lifecycle The node binary used for scripts is  but npm is using /usr/local/bin/node itself. Use the `--scripts-prepend-node-path` option to include the path for the node binary npm was executed with.
 @uifabric/example-data: [XX:XX:XX XM] ▲ One of these [node-sass, postcss, autoprefixer] is not installed, so this task has no effect
 @uifabric/set-version: [XX:XX:XX XM] ▲ One of these [node-sass, postcss, autoprefixer] is not installed, so this task has no effect
 @uifabric/merge-styles: [XX:XX:XX XM] ▲ One of these [node-sass, postcss, autoprefixer] is not installed, so this task has no effect
 @uifabric/jest-serializer-merge-styles: [XX:XX:XX XM] ▲ One of these [node-sass, postcss, autoprefixer] is not installed, so this task has no effect
-@fluentui/react: (node:1020) [DEP0097] DeprecationWarning: Using a domain property in MakeCallback is deprecated. Use the async_context variant of MakeCallback or the AsyncResource class instead.
+@fluentui/react: (node:1021) [DEP0097] DeprecationWarning: Using a domain property in MakeCallback is deprecated. Use the async_context variant of MakeCallback or the AsyncResource class instead.
 @uifabric/utilities: [XX:XX:XX XM] ▲ One of these [node-sass, postcss, autoprefixer] is not installed, so this task has no effect
 @uifabric/react-hooks: [XX:XX:XX XM] ▲ One of these [node-sass, postcss, autoprefixer] is not installed, so this task has no effect
 @uifabric/styling: [XX:XX:XX XM] ▲ One of these [node-sass, postcss, autoprefixer] is not installed, so this task has no effect