7.2.0rc1 crashes on startup: Unrecoverable Error

[kolloch]

Description of the bug:

When I update our internal Bazel repo from 7.1.2 to 7.2.0rc1, I get the following error on startup:

2024/05/22 09:47:04 Downloading https://releases.bazel.build/7.2.0/rc1/bazel-7.2.0rc1-linux-x86_64...
2024/05/22 09:47:04 Skipping basic authentication for releases.bazel.build because no credentials found in /home/peter/.netrc
Downloading: 68 MB out of 68 MB (100%) 
Extracting Bazel installation...
Starting local Bazel server and connecting to it...
Computing main repo mapping: 
FATAL: bazel crashed due to an internal error. Printing stack trace:
java.lang.RuntimeException: Unrecoverable error while evaluating node 'Key{moduleKey=<root>, override=null}' (requested by nodes 'com.google.devtools.build.lib.bazel.bzlmod.BazelModuleResolutionValue$$Lambda/0x00000008004c51e0@f40784e')
        at com.google.devtools.build.skyframe.AbstractParallelEvaluator$Evaluate.run(AbstractParallelEvaluator.java:550)
        at com.google.devtools.build.lib.concurrent.AbstractQueueVisitor$WrappedRunnable.run(AbstractQueueVisitor.java:414)
        at java.base/java.util.concurrent.ForkJoinTask$AdaptedRunnableAction.exec(Unknown Source)
        at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
        at java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown Source)
        at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
        at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
        at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown Source)
Caused by: java.util.NoSuchElementException
        at java.base/java.util.List.getFirst(Unknown Source)
        at com.google.devtools.build.lib.bazel.bzlmod.ModuleFileFunction.evaluateRootModuleFile(ModuleFileFunction.java:443)
        at com.google.devtools.build.lib.bazel.bzlmod.ModuleFileFunction.computeForRootModule(ModuleFileFunction.java:280)
        at com.google.devtools.build.lib.bazel.bzlmod.ModuleFileFunction.compute(ModuleFileFunction.java:141)
        at com.google.devtools.build.skyframe.AbstractParallelEvaluator$Evaluate.run(AbstractParallelEvaluator.java:461)
        ... 7 more

Which category does this issue belong to?

Core

What's the simplest, easiest way to reproduce this bug? Please provide a minimal example if possible.

Locally, in this repo, even bazel info crashes.

# MODULE.bazel
module(
    name = "nx0",
    version = "0.1",
)

http_archive = use_repo_rule("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")

# .bazelversion
7.2.0rc1

Which operating system are you running Bazel on?

Ubuntu 22.04.4 LTS (jammy) amd64

What is the output of bazel info release?

release 7.2.0rc1

If bazel info release returns development version or (@non-git), tell us how you built Bazel.

No response

What's the output of git remote get-url origin; git rev-parse HEAD ?

No response

Is this a regression? If yes, please try to identify the Bazel commit where the bug was introduced.

first bad commit is 298d3d6

Have you found anything relevant by searching the web?

No response

Any other information, logs, or outputs that you want to share?

I happy to, just let me know!

[kolloch]

Ok, funnily enough, we don't even need that http_archive repo rule :) But maybe it is an interesting edge case and at least the error message could be better.

[fmeum]

@bazel-io fork 7.2.0