Found 1 target...
 WARNING: Error reading from the remote cache:
 SSLEngine closed already
 WARNING: Error reading from the remote cache:
 ClosedChannelException
 WARNING: Error writing to the remote cache:
 SSLEngine closed already
 WARNING: Error writing to the remote cache:
 ClosedChannelException
 Target //blah/blah/blah/web_server failed to build
 Unhandled exception thrown during build; message: Unrecoverable error while evaluating node 'ActionLookupData{actionLookupKey=@boringssl//:crypto BuildConfigurationValue.Key[c215c61f119d666e61c4ec28c2abfb5c] false, actionIndex=317}' (requested by nodes 'external/xyz BuildConfigurationValue.Key[c215c61f119d666e61c4ec28c2abfb5c] false')
 INFO: Elapsed time: 5.754s, Critical Path: 4.43s
 INFO: 152 processes: 152 linux-sandbox.
 FAILED: Build did NOT complete successfully
 java.lang.RuntimeException: Unrecoverable error while evaluating node 'ActionLookupData{actionLookupKey=@xyz BuildConfigurationValue.Key[c215c61f119d666e61c4ec28c2abfb5c] false, actionIndex=317}' (requested by nodes 'external/xyz @xyz BuildConfigurationValue.Key[c215c61f119d666e61c4ec28c2abfb5c] false')
   at com.google.devtools.build.skyframe.AbstractParallelEvaluator$Evaluate.run(AbstractParallelEvaluator.java:477)
   at com.google.devtools.build.lib.concurrent.AbstractQueueVisitor$WrappedRunnable.run(AbstractQueueVisitor.java:355)
   at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
   at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
   at java.base/java.lang.Thread.run(Unknown Source)
 Caused by: io.netty.handler.codec.DecoderException: javax.net.ssl.SSLHandshakeException: General OpenSslEngine problem
   at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:459)
   at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265)
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
   at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
   at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1359)
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
   at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
   at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:935)
   at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:138)
   at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645)
   at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
   at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)
   at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)
   at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858)
   at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:138)
   ... 1 more
 Caused by: javax.net.ssl.SSLHandshakeException: General OpenSslEngine problem
   at io.netty.handler.ssl.ReferenceCountedOpenSslContext$AbstractCertificateVerifier.verify(ReferenceCountedOpenSslContext.java:648)
   at io.netty.internal.tcnative.SSL.readFromSSL(Native Method)
   at io.netty.handler.ssl.ReferenceCountedOpenSslEngine.readPlaintextData(ReferenceCountedOpenSslEngine.java:489)
   at io.netty.handler.ssl.ReferenceCountedOpenSslEngine.unwrap(ReferenceCountedOpenSslEngine.java:1039)
   at io.netty.handler.ssl.ReferenceCountedOpenSslEngine.unwrap(ReferenceCountedOpenSslEngine.java:1146)
   at io.netty.handler.ssl.SslHandler$SslEngineType$1.unwrap(SslHandler.java:211)
   at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1247)
   at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1158)
   at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1193)
   at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489)
   at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428)
   ... 16 more
 Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
   at java.base/sun.security.validator.PKIXValidator.doBuild(Unknown Source)
   at java.base/sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
   at java.base/sun.security.validator.Validator.validate(Unknown Source)
   at java.base/sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
   at java.base/sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
   at java.base/sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
   at io.netty.handler.ssl.ReferenceCountedOpenSslClientContext$ExtendedTrustManagerVerifyCallback.verify(ReferenceCountedOpenSslClientContext.java:221)
   at io.netty.handler.ssl.ReferenceCountedOpenSslContext$AbstractCertificateVerifier.verify(ReferenceCountedOpenSslContext.java:644)
   ... 26 more
 Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
   at java.base/sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
   at java.base/sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
   at java.base/java.security.cert.CertPathBuilder.build(Unknown Source)
   ... 34 more