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Review: rust-simd-json 0.18.1-1

Package Information

DescriptionJSON parser using SIMD instructions - Rust source code

This crate parses JSON using single instruction, multiple data (SIMD) operations on supported processors, with a fallback implementation for other systems. It provides owned and borrowed representations of JSON values, serialization, and integration with Serde.

The parser is based on the simdjson approach. Runtime detection selects an appropriate implementation on supported x86 processors. Source code for Debianized Rust crate "simd-json"

MaintainerDebian Rust Maintainers <pkg-rust-maintainers@alioth-lists.debian.net>
Changed BySteffen Moeller <moeller@debian.org>
Sponsormoeller@debian.org
Distributionunstable
Architectureany
VCSgit: https://salsa.debian.org/rust-team/debcargo-conf.git [src/simd-json] (browse)
Closes#1147529
Trackerhttps://tracker.debian.org/pkg/rust-simd-json
Uploaded3 days ago

New Package Report

.changes
DateSat, 12 Sep 2026 22:27:11 +0200
Sourcerust-simd-json
Version0.18.1-1
Changed-BySteffen Moeller
Architecturesource amd64
Distributionunstable
Changelog
rust-simd-json (0.18.1-1) unstable; urgency=medium
 .
   * Initial upload (Closes: #1147529).
   * Package simd-json 0.18.1 from crates.io using debcargo 2.8.4
   * Disable nightly hints and unavailable performance instrumentation.
   * Omit test and benchmark targets requiring data excluded from the crate.
   * Use Debian's float-cmp 0.9 for tests.
   * Account for incompatible assumptions in optional-feature tests.
   * Enlarge the test harness stack for full-feature and arraybackend tests.
   * Fix approximate number parsing without the default SWAR feature.
   * Gate tape deserialization on the Serde implementation feature.
.dsc
Componentmain
Package-Listlibrust-simd-json-dev deb rust optional arch=any
Sectionrust
Priorityoptional
debian/copyright
Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: simd-json
Upstream-Contact:
 Heinz N. Gies <heinz@licenser.net>
 Sunny Gleason
Source: https://github.com/simd-lite/simd-json

Files: *
Copyright:
 Heinz N. Gies <heinz@licenser.net>
 Sunny Gleason
License: Apache-2.0 or MIT
Comment:
 Upstream identifies the authors in Cargo.toml but does not specify copyright
 years. LICENSE-MIT retains placeholders for the year and copyright holder.


Files: src/*
Copyright:
 Heinz N. Gies <heinz@licenser.net>
 Sunny Gleason
 2018-2025 The simdjson authors
 2014-2024 Serde Developers
License: Apache-2.0 and (Apache-2.0 or MIT)
Comment:
 README.md credits code ported from simdjson and serde_json. The simdjson
 portions are distributed here under Apache-2.0; simd-json and serde_json offer
 Apache-2.0 or MIT. src/macros.rs also identifies the serde_json revision
 from which its JSON construction macros were adapted.
 .
 https://github.com/simdjson/simdjson/blob/master/LICENSE
 https://github.com/serde-rs/json

Files: debian/*
Copyright:
 2026 Debian Rust Maintainers <pkg-rust-maintainers@alioth-lists.debian.net>
 2026 Steffen Moeller <moeller@debian.org>
License: Apache-2.0 or MIT

License: Apache-2.0
 Debian systems provide the Apache 2.0 license in
 /usr/share/common-licenses/Apache-2.0

License: MIT
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:
 .
 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.
 .
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.

Review Information

rejected — allocated to eamanu 3 days ago, started 3 days ago, completed 3 days ago.

Final Comment

Thanks for your contributions to Debian!

Please review .devcontainer/Dockerfile file license and copyright.

Public Notes

3 days ago ● public

licensecheck

Command: licensecheck -r --deb-machine .
Exit code: 0

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
Upstream-Name: FIXME
Upstream-Contact: FIXME
Source: FIXME
Disclaimer: Autogenerated by licensecheck

Files: ./.cargo/config.toml
 ./.cargo_vcs_info.json
 ./.devcontainer/devcontainer.json
 ./.drone.yml.broken
 ./.github/dependabot.yml
 ./.github/workflows/big-endian.yml
 ./.github/workflows/nightly.yml
 ./.github/workflows/pr-perf.yml
 ./.github/workflows/quality.yaml
 ./.github/workflows/tests.yml
 ./.vscode/settings.json
 ./CODE_OF_CONDUCT.md
 ./Cargo.lock
 ./Cargo.toml
 ./Cargo.toml.orig
 ./Makefile
 ./benches/parse.rs
 ./benches/to_tape.rs
 ./codecov.yml
 ./debian/cargo-checksum.json
 ./debian/changelog
 ./debian/control
 ./debian/debcargo.toml
 ./debian/patches/disable-unavailable-targets.patch
 ./debian/patches/fix-approx-without-swar.patch
 ./debian/patches/fix-serde-feature-gate.patch
 ./debian/patches/relax-float-cmp.patch
 ./debian/patches/series
 ./debian/patches/test-feature-combinations.patch
 ./debian/rules
 ./debian/source/format
 ./debian/tests/control
 ./debian/upstream/metadata
 ./debian/watch
 ./examples/perf.rs
 ./src/charutils.rs
 ./src/cow.rs
 ./src/error.rs
 ./src/impls/avx2/deser.rs
 ./src/impls/avx2/mod.rs
 ./src/impls/avx2/stage1.rs
 ./src/impls/mod.rs
 ./src/impls/native/deser.rs
 ./src/impls/native/mod.rs
 ./src/impls/native/stage1.rs
 ./src/impls/neon/deser.rs
 ./src/impls/neon/mod.rs
 ./src/impls/neon/stage1.rs
 ./src/impls/portable/deser.rs
 ./src/impls/portable/mod.rs
 ./src/impls/portable/stage1.rs
 ./src/impls/simd128/deser.rs
 ./src/impls/simd128/mod.rs
 ./src/impls/simd128/stage1.rs
 ./src/impls/sse42/deser.rs
 ./src/impls/sse42/mod.rs
 ./src/impls/sse42/stage1.rs
 ./src/known_key.rs
 ./src/lib.rs
 ./src/macros.rs
 ./src/numberparse.rs
 ./src/numberparse/approx.rs
 ./src/numberparse/correct.rs
 ./src/numberparse/correct/numberconst.rs
 ./src/portability.rs
 ./src/prelude.rs
 ./src/safer_unchecked.rs
 ./src/serde.rs
 ./src/serde/de.rs
 ./src/serde/de/tests.rs
 ./src/serde/se.rs
 ./src/serde/se/pp.rs
 ./src/serde/value.rs
 ./src/serde/value/borrowed.rs
 ./src/serde/value/borrowed/de.rs
 ./src/serde/value/borrowed/se.rs
 ./src/serde/value/owned.rs
 ./src/serde/value/owned/de.rs
 ./src/serde/value/owned/se.rs
 ./src/serde/value/shared.rs
 ./src/stage2.rs
 ./src/stringparse.rs
 ./src/tests.rs
 ./src/tests/impls.rs
 ./src/tests/serde.rs
 ./src/value.rs
 ./src/value/borrowed.rs
 ./src/value/borrowed/cmp.rs
 ./src/value/borrowed/from.rs
 ./src/value/borrowed/serialize.rs
 ./src/value/lazy.rs
 ./src/value/lazy/array.rs
 ./src/value/lazy/cmp.rs
 ./src/value/lazy/from.rs
 ./src/value/lazy/object.rs
 ./src/value/lazy/trait_impls.rs
 ./src/value/owned.rs
 ./src/value/owned/cmp.rs
 ./src/value/owned/from.rs
 ./src/value/owned/serialize.rs
 ./src/value/tape.rs
 ./src/value/tape/array.rs
 ./src/value/tape/cmp.rs
 ./src/value/tape/object.rs
 ./src/value/tape/trait_impls.rs
 ./tests/alloc.rs
 ./tests/depth.rs
 ./tests/jsonchecker.rs
 ./tests/ordered_float.rs
 ./tests/serde_128_bit.rs
 ./tests/serenity.rs
 ./tests/weird_type.rs
Copyright: NONE
License: UNKNOWN
 FIXME

Files: ./Contribution.md
 ./LICENSE-APACHE
Copyright: NONE
License: Apache-2.0
 FIXME

Files: ./debian/copyright.debcargo.hint
Copyright: FIXME (overlay) UNKNOWN-YEARS Heinz N. Gies <heinz@licenser.net>
License: Apache-2.0 and/or Expat
 FIXME

Files: ./debian/copyright
Copyright: Heinz N. Gies <heinz@licenser.net>
License: Apache-2.0 and/or Expat
 FIXME

Files: ./LICENSE-MIT
Copyright: NONE
License: Expat
 FIXME

Files: ./.devcontainer/Dockerfile
Copyright: Microsoft Corporation.
License: Expat
 FIXME

Files: ./README.md
Copyright: should as well be respected.
License: UNKNOWN
 FIXME

3 days ago ● public

debian/copyright check

Command: cme check dpkg-copyright
Exit code: 2

Warning in 'Files:"*" License short_name': value is "Apache-2.0 or MIT". There are many versions of the MIT license. Please use Expat instead, when it matches. See L<Debian copyright format|https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/#license-specification> and L<wikipedia|https://en.wikipedia.org/wiki/MIT_License#Various_versions>for details.
Offending value: 'Apache-2.0 or MIT'
Element 'License-Alias' of node 'Files:"src/*"' is deprecated
Configuration item 'Files:"src/*" License short_name' has a wrong value:
	value 'Apache-2.0 and (Apache-2.0 or MIT)' does not match grammar from model: license '(Apache-2.0' is not declared in a stand-alone License paragraph. Expected one of the current stand-alone License paragraphs: Apache-2.0 MIT.
value is computed from '$replace{$alias}', where 
		'alias' from path '- - License-Alias' is undef
3 days ago ● public

licenserecon

Command: licenserecon
Exit code: 3

en: Versions: licenserecon '17.0'  licensecheck '3.3.9-1'

Parsing Source Tree  ....
Reading d/copyright  ....
Running licensecheck ....

d/copyright      | licensecheck

Apache-2.0 or MIT| Apache-2.0        Contribution.md
Apache-2.0 or MIT| Expat             .devcontainer/Dockerfile

3 days ago ● public

Look for SPDX

Command: grep -r -B1 'SPDX-'
Exit code: 1

(no output)

3 days ago ● public

Lintian

Command: lintian -i -I -v --pedantic
Exit code: 1

Skipping ../rust-simd-json_0.18.1-1_amd64.changes: ../librust-simd-json-dev_0.18.1-1_amd64.deb does not exist, exiting

No packages selected.
3 days ago ● public

duck

Command: duck
Exit code: 0

I: debian/control: Homepage: https://github.com/simd-lite/simd-json: INFORMATION (Certainty:wild-guess)
   Curl:0 HTTP:200 No error 
   Website seems to be outdated, is probably a parked domain or for sale. Please update your links!
   Matching regular expression(s):
    m/\breplace .* by\b/i
    m/\breplace .* with\b/i

I: debian/copyright:31: URL: https://github.com/simdjson/simdjson/blob/master/LICENSE: INFORMATION (Certainty:wild-guess)
   Curl:0 HTTP:200 No error 
   Website seems to be outdated, is probably a parked domain or for sale. Please update your links!
   Matching regular expression(s):
    m/\breplaced with\b/i

I: debian/upstream/metadata:URL: https://github.com/simd-lite/simd-json: INFORMATION (Certainty:wild-guess)
   Curl:0 HTTP:200 No error 
   Website seems to be outdated, is probably a parked domain or for sale. Please update your links!
   Matching regular expression(s):
    m/\breplace .* by\b/i
    m/\breplace .* with\b/i

I: debian/upstream/metadata:URL: https://github.com/simd-lite/simd-json.git: INFORMATION (Certainty:wild-guess)
   Curl:0 HTTP:200 No error 
   Website seems to be outdated, is probably a parked domain or for sale. Please update your links!
   Matching regular expression(s):
    m/\breplace .* by\b/i
    m/\breplace .* with\b/i

I: debian/copyright:6: URL: https://github.com/simd-lite/simd-json: INFORMATION (Certainty:wild-guess)
   Curl:0 HTTP:200 No error 
   Website seems to be outdated, is probably a parked domain or for sale. Please update your links!
   Matching regular expression(s):
    m/\breplace .* by\b/i
    m/\breplace .* with\b/i

3 days ago ● public

look for copyright

Command: egrep -R -i copyright
Exit code: 0

.devcontainer/Dockerfile:# Copyright (c) Microsoft Corporation. All rights reserved.
LICENSE-APACHE:      "Licensor" shall mean the copyright owner or entity authorized by
LICENSE-APACHE:      the copyright owner that is granting the License.
LICENSE-APACHE:      copyright notice that is included in or attached to the work
LICENSE-APACHE:      submitted to Licensor for inclusion in the Work by the copyright owner
LICENSE-APACHE:      the copyright owner. For the purposes of this definition, "submitted"
LICENSE-APACHE:      designated in writing by the copyright owner as "Not a Contribution."
LICENSE-APACHE:   2. Grant of Copyright License. Subject to the terms and conditions of
LICENSE-APACHE:      copyright license to reproduce, prepare Derivative Works of,
LICENSE-APACHE:          that You distribute, all copyright, patent, trademark, and
LICENSE-APACHE:      You may add Your own copyright statement to Your modifications and
LICENSE-APACHE:      same "printed page" as the copyright notice for easier
LICENSE-APACHE:   Copyright [yyyy] [name of copyright owner]
LICENSE-MIT:Copyright (c) [year] [fullname]
LICENSE-MIT:The above copyright notice and this permission notice shall be included in all
LICENSE-MIT:AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
debian/copyright.debcargo.hint:Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
debian/copyright.debcargo.hint:Copyright:
debian/copyright.debcargo.hint: FIXME (overlay): Since upstream copyright years are not available in
debian/copyright.debcargo.hint:Copyright:
debian/copyright.debcargo.hint: The above copyright notice and this permission notice shall be included in all
debian/copyright.debcargo.hint: AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
debian/copyright:Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
debian/copyright:Copyright:
debian/copyright: Upstream identifies the authors in Cargo.toml but does not specify copyright
debian/copyright: years. LICENSE-MIT retains placeholders for the year and copyright holder.
debian/copyright:Copyright:
debian/copyright:Copyright:
debian/copyright: The above copyright notice and this permission notice shall be included in all
debian/copyright: AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
README.md:However it ports a lot of code from [simdjson](https://github.com/lemire/simdjson) so their work and copyright on that should also be respected.
README.md:The [Serde][serde] integration is based on `serde-json` so their copyright should as well be respected.
3 days ago ● public

look for license

Command: egrep -R -i license
Exit code: 0

.pc/disable-unavailable-targets.patch/Cargo.toml:    "Heinz N. Gies <heinz@licenser.net>",
.pc/disable-unavailable-targets.patch/Cargo.toml:license = "Apache-2.0 OR MIT"
.pc/relax-float-cmp.patch/Cargo.toml:    "Heinz N. Gies <heinz@licenser.net>",
.pc/relax-float-cmp.patch/Cargo.toml:license = "Apache-2.0 OR MIT"
.devcontainer/Dockerfile:# Licensed under the MIT License. See https://go.microsoft.com/fwlink/?linkid=2090316 for license information.
CODE_OF_CONDUCT.md:**Contact**: [opensource@wayfair.com](mailto:oss@licenser.net?subject=simd-lite+moderation)
Cargo.toml.orig:authors = ["Heinz N. Gies <heinz@licenser.net>", "Sunny Gleason"]
Cargo.toml.orig:license = "Apache-2.0 OR MIT"
Cargo.toml:    "Heinz N. Gies <heinz@licenser.net>",
Cargo.toml:license = "Apache-2.0 OR MIT"
LICENSE-APACHE:                                 Apache License
LICENSE-APACHE:                        http://www.apache.org/licenses/
LICENSE-APACHE:      "License" shall mean the terms and conditions for use, reproduction,
LICENSE-APACHE:      the copyright owner that is granting the License.
LICENSE-APACHE:      exercising permissions granted by this License.
LICENSE-APACHE:      Object form, made available under the License, as indicated by a
LICENSE-APACHE:      of this License, Derivative Works shall not include works that remain
LICENSE-APACHE:   2. Grant of Copyright License. Subject to the terms and conditions of
LICENSE-APACHE:      this License, each Contributor hereby grants to You a perpetual,
LICENSE-APACHE:      copyright license to reproduce, prepare Derivative Works of,
LICENSE-APACHE:      publicly display, publicly perform, sublicense, and distribute the
LICENSE-APACHE:   3. Grant of Patent License. Subject to the terms and conditions of
LICENSE-APACHE:      this License, each Contributor hereby grants to You a perpetual,
LICENSE-APACHE:      (except as stated in this section) patent license to make, have made,
LICENSE-APACHE:      where such license applies only to those patent claims licensable
LICENSE-APACHE:      or contributory patent infringement, then any patent licenses
LICENSE-APACHE:      granted to You under this License for that Work shall terminate
LICENSE-APACHE:          Derivative Works a copy of this License; and
LICENSE-APACHE:          do not modify the License. You may add Your own attribution
LICENSE-APACHE:          as modifying the License.
LICENSE-APACHE:      may provide additional or different license terms and conditions
LICENSE-APACHE:      the conditions stated in this License.
LICENSE-APACHE:      this License, without any additional terms or conditions.
LICENSE-APACHE:      the terms of any separate license agreement you may have executed
LICENSE-APACHE:   6. Trademarks. This License does not grant permission to use the trade
LICENSE-APACHE:      risks associated with Your exercise of permissions under this License.
LICENSE-APACHE:      result of this License or out of the use or inability to use the
LICENSE-APACHE:      License. However, in accepting such obligations, You may act only
LICENSE-APACHE:   APPENDIX: How to apply the Apache License to your work.
LICENSE-APACHE:      To apply the Apache License to your work, attach the following
LICENSE-APACHE:   Licensed under the Apache License, Version 2.0 (the "License");
LICENSE-APACHE:   you may not use this file except in compliance with the License.
LICENSE-APACHE:   You may obtain a copy of the License at
LICENSE-APACHE:       http://www.apache.org/licenses/LICENSE-2.0
LICENSE-APACHE:   distributed under the License is distributed on an "AS IS" BASIS,
LICENSE-APACHE:   See the License for the specific language governing permissions and
LICENSE-APACHE:   limitations under the License.
LICENSE-MIT:MIT License
LICENSE-MIT:to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
debian/copyright.debcargo.hint: Heinz N. Gies <heinz@licenser.net>
debian/copyright.debcargo.hint: FIXME (overlay) UNKNOWN-YEARS Heinz N. Gies <heinz@licenser.net>
debian/copyright.debcargo.hint:License: Apache-2.0 or MIT
debian/copyright.debcargo.hint:License: Apache-2.0 or MIT
debian/copyright.debcargo.hint:License: Apache-2.0
debian/copyright.debcargo.hint: Debian systems provide the Apache 2.0 license in
debian/copyright.debcargo.hint: /usr/share/common-licenses/Apache-2.0
debian/copyright.debcargo.hint:License: MIT
debian/copyright.debcargo.hint: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
debian/copyright: Heinz N. Gies <heinz@licenser.net>
debian/copyright: Heinz N. Gies <heinz@licenser.net>
debian/copyright:License: Apache-2.0 or MIT
debian/copyright: years. LICENSE-MIT retains placeholders for the year and copyright holder.
debian/copyright: Heinz N. Gies <heinz@licenser.net>
debian/copyright:License: Apache-2.0 and (Apache-2.0 or MIT)
debian/copyright: https://github.com/simdjson/simdjson/blob/master/LICENSE
debian/copyright:License: Apache-2.0 or MIT
debian/copyright:License: Apache-2.0
debian/copyright: Debian systems provide the Apache 2.0 license in
debian/copyright: /usr/share/common-licenses/Apache-2.0
debian/copyright:License: MIT
debian/copyright: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
README.md:## License
README.md:simd-json itself is licensed under either of
README.md:* [Apache License, Version 2.0, (LICENSE-APACHE)](http://www.apache.org/licenses/LICENSE-2.0)
README.md:* [MIT license (LICENSE-MIT)](http://opensource.org/licenses/MIT)
Contribution.md:6. License
Contribution.md:## License
Contribution.md:By contributing to this project, you agree that your contributions will be licensed under Apache License, Version 2.0, and MIT license. Please review the project's `LICENSE` file for more information.
3 days ago ● public

Author check: rust-simd-json 0.18.1-1

Scanned 102 files. 5 author(s) declared in debian/copyright.

All source-file authors appear in debian/copyright.

3 days ago ● public

License check: rust-simd-json 0.18.1-1

Archive component: main

COMPATIBLE:

  • Apache-2.0 (Note: not compatible with GPL-2)
  • MIT

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