chore: upgrade rust version to 1.90 in all related Dockerfiles

[carlory]

What this PR does / why we need it:

## Prerequisites

- Go Version 1.24.1 or higher (matches the module requirements)
- Rust Version 1.90.0 or higher (for Candle bindings, supports 2024 edition)

related-to #176

Which issue(s) this PR fixes:

Fixes #

Release Notes: Yes/No

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[rootfs]

with #266 merged, @carlory can you continue this work?

[Copilot]

Pull Request Overview

This PR downgrades the Rust version from 1.85 to 1.90 across Dockerfiles to align with the project's minimum Rust version requirement of 1.90.0 for Candle bindings support.

• Standardized Rust version to 1.90 in Docker base images

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
Dockerfile.extproc.cross	Updated Rust base image from 1.85 to 1.90 for cross-compilation builder
Dockerfile.extproc	Updated Rust base image from 1.85 to 1.90 for standard builder

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[github-actions]

👥 vLLM Semantic Team Notification

The following members have been identified for the changed files in this PR and have been automatically assigned:

📁 Root Directory

Owners: @rootfs, @Xunzhuo
Files changed:

• Dockerfile.extproc
• Dockerfile.extproc.cross

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[carlory]

@rootfs rebased.

[rootfs]

@carlory can you update this too to make sure Rust 1.9 is fully tested?
https://github.com/vllm-project/semantic-router/blob/main/.github/workflows/test-and-build.yml#L21

[carlory]

After upgrading rust image version to 1.90, it will fails on centos:stream9 due to incompatibility with glibc.

error message:

/app/extproc-server: /lib64/libc.so.6: version `GLIBC_2.39' not found (required by /app/lib/libcandle_semantic_router.so)

readelf output:

bash-5.1# readelf -Ws /app/lib/libcandle_semantic_router.so | grep GLIBC_2.39
   125: 0000000000000000     0 FUNC    WEAK   DEFAULT  UND pidfd_getpid@GLIBC_2.39 (12)
   126: 0000000000000000     0 FUNC    WEAK   DEFAULT  UND pidfd_spawnp@GLIBC_2.39 (12)

ldd version on centos:streamX

(base) ➜  ~ docker run --rm quay.io/centos/centos:stream9 ldd --version

ldd (GNU libc) 2.34
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.
(base) ➜  ~ docker run --rm quay.io/centos/centos:stream10 ldd --version

ldd (GNU libc) 2.39
Copyright (C) 2024 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.

ldd version on rust:X

(base) ➜  ~ docker run --rm rust:1.85 ldd --version
ldd (Debian GLIBC 2.36-9+deb12u10) 2.36
Copyright (C) 2022 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.
(base) ➜  ~ docker run --rm rust:1.90 ldd --version
ldd (Debian GLIBC 2.41-12) 2.41
Copyright (C) 2024 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.

It seems that this issue can be solved by replacing centos:stream9 with centos:stream10. But it is not a good solution because the ldd version on rust:1.90 is higher than the ldd version on centos:stream10. Is it possible to change rust-builder image to centos:stream9 and install rust:1.90 on that image?

Do you have any better suggestion? @rootfs

[rootfs]

@carlory maybe some crates also need upgrade. I am in the process of upgrading candle from 0.8.4 to latest, stay tuned.

[rootfs]

@carlory it looks new rust may have more restriction per https://github.com/vllm-project/semantic-router/actions/runs/18881201529/job/53884511892?pr=549

I don't have this issue on my end with Rust 1.75.

[rootfs]

@carlory 1.90 actually works with newer candle. When you fix the CI, let's merge this PR.

[rootfs]

@JaredforReal the kubernetes test failed on timeout. The init container failed to download the models before the readiness probe failed. We may need longer probe interval.