Neuron – Build Information – Swift Package Index

Has it really been five years since Swift Package Index launched? Read our anniversary blog post!

Build Information

Failed to build Neuron, reference 2.0.25 (1d8679), with Swift 6.2 (beta) for Wasm on 27 Jun 2025 17:50:46 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.64.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/wvabrinskas/Neuron.git
Reference: 2.0.25
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: 	git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: 	git branch -m <name>
From https://github.com/wvabrinskas/Neuron
 * tag               2.0.25     -> FETCH_HEAD
HEAD is now at 1d8679f Develop (#105)
Cloned https://github.com/wvabrinskas/Neuron.git
Revision (git rev-parse @):
1d8679f687058618fec4ee778f6e8a37a06f876b
SUCCESS checkout https://github.com/wvabrinskas/Neuron.git at 2.0.25
========================================
Build
========================================
Selected platform:         wasm
Swift version:             6.2
Building package at path:  $PWD
https://github.com/wvabrinskas/Neuron.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-2":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest swift build --swift-sdk wasm32-unknown-wasi 2>&1
wasm-6.2-latest: Pulling from finestructure/spi-images
Digest: sha256:44384f43f933eaa0f42803e9ef7c3d8388c5841ccc831a15a5edf63d8c273423
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:wasm-6.2-latest
Fetching https://github.com/wvabrinskas/NumSwift.git
Fetching https://github.com/wvabrinskas/Logger.git
Fetching https://github.com/apple/swift-numerics
[1/107] Fetching logger
[22/1286] Fetching logger, numswift
Fetched https://github.com/wvabrinskas/NumSwift.git from cache (0.23s)
[22/5864] Fetching logger, swift-numerics
Fetched https://github.com/wvabrinskas/Logger.git from cache (0.43s)
Fetched https://github.com/apple/swift-numerics from cache (0.43s)
Computing version for https://github.com/wvabrinskas/NumSwift.git
Computed https://github.com/wvabrinskas/NumSwift.git at 2.0.13 (2.58s)
Computing version for https://github.com/wvabrinskas/Logger.git
Computed https://github.com/wvabrinskas/Logger.git at 1.0.7 (0.36s)
Computing version for https://github.com/apple/swift-numerics
Computed https://github.com/apple/swift-numerics at 1.0.3 (0.91s)
Creating working copy for https://github.com/wvabrinskas/Logger.git
Working copy of https://github.com/wvabrinskas/Logger.git resolved at 1.0.7
Creating working copy for https://github.com/apple/swift-numerics
Working copy of https://github.com/apple/swift-numerics resolved at 1.0.3
Creating working copy for https://github.com/wvabrinskas/NumSwift.git
Working copy of https://github.com/wvabrinskas/NumSwift.git resolved at 2.0.13
Building for debugging...
[0/12] Write sources
[2/12] Copying GPU.metal
[2/12] Write sources
[6/12] Copying print-example.png
[7/12] Write sources
[8/12] Compiling _NumericsShims _NumericsShims.c
[9/12] Write swift-version-24593BA9C3E375BF.txt
In file included from /host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/numswiftc_base.c:1:
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:30:3: error: _Float16 is not supported on this target
   30 |   _Float16 value;
      |   ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:34:48: error: _Float16 is not supported on this target
   34 | extern NSC_IndexedValue nsc_index_of_min(const _Float16 array[]);
      |                                                ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:35:48: error: _Float16 is not supported on this target
   35 | extern NSC_IndexedValue nsc_index_of_max(const _Float16 array[]);
      |                                                ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:36:31: error: _Float16 is not supported on this target
   36 | extern _Float16 nsc_max(const _Float16 array[]);
      |                               ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:36:8: error: _Float16 is not supported on this target
   36 | extern _Float16 nsc_max(const _Float16 array[]);
      |        ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:37:31: error: _Float16 is not supported on this target
   37 | extern _Float16 nsc_min(const _Float16 array[]);
      |                               ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:37:8: error: _Float16 is not supported on this target
   37 | extern _Float16 nsc_min(const _Float16 array[]);
      |        ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:38:32: error: _Float16 is not supported on this target
   38 | extern _Float16 nsc_mean(const _Float16 array[]);
      |                                ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:38:8: error: _Float16 is not supported on this target
   38 | extern _Float16 nsc_mean(const _Float16 array[]);
      |        ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:39:31: error: _Float16 is not supported on this target
   39 | extern _Float16 nsc_sum(const _Float16 array[]);
      |                               ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:39:8: error: _Float16 is not supported on this target
   39 | extern _Float16 nsc_sum(const _Float16 array[]);
      |        ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:40:42: error: _Float16 is not supported on this target
   40 | extern _Float16 nsc_sum_of_squares(const _Float16 array[]);
      |                                          ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:40:8: error: _Float16 is not supported on this target
   40 | extern _Float16 nsc_sum_of_squares(const _Float16 array[]);
      |        ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:42:34: error: _Float16 is not supported on this target
   42 | extern void nsc_add_scalar(const _Float16 lhs, const _Float16 rhs[], _Float16 *result);
      |                                  ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:42:54: error: _Float16 is not supported on this target
   42 | extern void nsc_add_scalar(const _Float16 lhs, const _Float16 rhs[], _Float16 *result);
      |                                                      ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:42:70: error: _Float16 is not supported on this target
   42 | extern void nsc_add_scalar(const _Float16 lhs, const _Float16 rhs[], _Float16 *result);
      |                                                                      ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:43:27: error: _Float16 is not supported on this target
   43 | extern void nsc_add(const _Float16 lhs[], const _Float16 rhs[], _Float16 *result);
      |                           ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:43:49: error: _Float16 is not supported on this target
   43 | extern void nsc_add(const _Float16 lhs[], const _Float16 rhs[], _Float16 *result);
      |                                                 ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:43:65: error: _Float16 is not supported on this target
   43 | extern void nsc_add(const _Float16 lhs[], const _Float16 rhs[], _Float16 *result);
      |                                                                 ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
20 errors generated.
[10/24] Compiling NumSwiftC numswiftc_base.c
In file included from /host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/numswiftc.c:2:
In file included from /host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc.h:5:
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:30:3: error: _Float16 is not supported on this target
   30 |   _Float16 value;
      |   ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:34:48: error: _Float16 is not supported on this target
   34 | extern NSC_IndexedValue nsc_index_of_min(const _Float16 array[]);
      |                                                ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:35:48: error: _Float16 is not supported on this target
   35 | extern NSC_IndexedValue nsc_index_of_max(const _Float16 array[]);
      |                                                ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:36:31: error: _Float16 is not supported on this target
   36 | extern _Float16 nsc_max(const _Float16 array[]);
      |                               ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:36:8: error: _Float16 is not supported on this target
   36 | extern _Float16 nsc_max(const _Float16 array[]);
      |        ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:37:31: error: _Float16 is not supported on this target
   37 | extern _Float16 nsc_min(const _Float16 array[]);
      |                               ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:37:8: error: _Float16 is not supported on this target
   37 | extern _Float16 nsc_min(const _Float16 array[]);
      |        ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:38:32: error: _Float16 is not supported on this target
   38 | extern _Float16 nsc_mean(const _Float16 array[]);
      |                                ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:38:8: error: _Float16 is not supported on this target
   38 | extern _Float16 nsc_mean(const _Float16 array[]);
      |        ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:39:31: error: _Float16 is not supported on this target
   39 | extern _Float16 nsc_sum(const _Float16 array[]);
      |                               ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:39:8: error: _Float16 is not supported on this target
   39 | extern _Float16 nsc_sum(const _Float16 array[]);
      |        ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:40:42: error: _Float16 is not supported on this target
   40 | extern _Float16 nsc_sum_of_squares(const _Float16 array[]);
      |                                          ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:40:8: error: _Float16 is not supported on this target
   40 | extern _Float16 nsc_sum_of_squares(const _Float16 array[]);
      |        ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:42:34: error: _Float16 is not supported on this target
   42 | extern void nsc_add_scalar(const _Float16 lhs, const _Float16 rhs[], _Float16 *result);
      |                                  ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:42:54: error: _Float16 is not supported on this target
   42 | extern void nsc_add_scalar(const _Float16 lhs, const _Float16 rhs[], _Float16 *result);
      |                                                      ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:42:70: error: _Float16 is not supported on this target
   42 | extern void nsc_add_scalar(const _Float16 lhs, const _Float16 rhs[], _Float16 *result);
      |                                                                      ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:43:27: error: _Float16 is not supported on this target
   43 | extern void nsc_add(const _Float16 lhs[], const _Float16 rhs[], _Float16 *result);
      |                           ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:43:49: error: _Float16 is not supported on this target
   43 | extern void nsc_add(const _Float16 lhs[], const _Float16 rhs[], _Float16 *result);
      |                                                 ^
/host/spi-builder-workspace/.build/checkouts/NumSwift/Sources/NumSwiftC/include/numswiftc_base.h:43:65: error: _Float16 is not supported on this target
   43 | extern void nsc_add(const _Float16 lhs[], const _Float16 rhs[], _Float16 *result);
      |                                                                 ^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
[10/24] Compiling NumSwiftC numswiftc.c
BUILD FAILURE 6.2 wasm