apache/maven · error · IllegalStateException

Failed to serialize toolchains to memory

Error message

Failed to serialize toolchains to memory

What it means

Error "Failed to serialize toolchains to memory" thrown in apache/maven.

Source

Thrown at compat/maven-toolchain-builder/src/main/java/org/apache/maven/toolchain/building/DefaultToolchainsBuilder.java:91

        problems.setSource("");

        userToolchains = interpolate(userToolchains, problems);

        if (hasErrors(problems.getProblems())) {
            throw new ToolchainsBuildingException(problems.getProblems());
        }

        return new DefaultToolchainsBuildingResult(userToolchains, problems.getProblems());
    }

    private PersistedToolchains interpolate(PersistedToolchains toolchains, ProblemCollector problems) {

        StringWriter stringWriter = new StringWriter(1024 * 4);
        try {
            toolchainsWriter.write(stringWriter, null, toolchains);
        } catch (IOException e) {
            throw new IllegalStateException("Failed to serialize toolchains to memory", e);
        }

        String serializedToolchains = stringWriter.toString();

        RegexBasedInterpolator interpolator = new RegexBasedInterpolator();

        try {
            interpolator.addValueSource(new EnvarBasedValueSource());
        } catch (IOException e) {
            problems.add(
                    Problem.Severity.WARNING,
                    "Failed to use environment variables for interpolation: " + e.getMessage(),
                    -1,
                    -1,
                    e);
        }

        interpolator.addPostProcessor(new InterpolationPostProcessor() {

View on GitHub (pinned to e4093d4e12)

When it happens

Trigger: Thrown at compat/maven-toolchain-builder/src/main/java/org/apache/maven/toolchain/building/DefaultToolchainsBuilder.java:91 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of apache/maven@e4093d4e12 (2026-08-21). Data as JSON: /api/errors/59cb6113563b436b. Report an issue: GitHub.