this derivation will be built:
  /nix/store/ld36hx4pq4s4c9q5ckh1v9lmwhilbw73-swamp-20260828.231706.0-sha.ca29674e.drv
building '/nix/store/ld36hx4pq4s4c9q5ckh1v9lmwhilbw73-swamp-20260828.231706.0-sha.ca29674e.drv'
swamp-20260828.231706.0-sha.ca29674e> Using versionCheckHook
swamp-20260828.231706.0-sha.ca29674e> Running phase: unpackPhase
swamp-20260828.231706.0-sha.ca29674e> unpacking source archive /nix/store/rlakj80a79gg4sgy32f8x4pr3nb7v3wq-swamp-20260828.231706.0-sha.ca29674e-binary-linux-x86_64.tar.gz
swamp-20260828.231706.0-sha.ca29674e> source root is .
swamp-20260828.231706.0-sha.ca29674e> setting SOURCE_DATE_EPOCH to timestamp 1787960008 of file "./swamp"
swamp-20260828.231706.0-sha.ca29674e> Running phase: patchPhase
swamp-20260828.231706.0-sha.ca29674e> Running phase: updateAutotoolsGnuConfigScriptsPhase
swamp-20260828.231706.0-sha.ca29674e> Running phase: configurePhase
swamp-20260828.231706.0-sha.ca29674e> no configure script, doing nothing
swamp-20260828.231706.0-sha.ca29674e> Running phase: buildPhase
swamp-20260828.231706.0-sha.ca29674e> no Makefile or custom buildPhase, doing nothing
swamp-20260828.231706.0-sha.ca29674e> Running phase: installPhase
swamp-20260828.231706.0-sha.ca29674e> Running phase: fixupPhase
swamp-20260828.231706.0-sha.ca29674e> shrinking RPATHs of ELF executables and libraries in /nix/store/4ppxg43gcm539c9pnhbhzlmm0apad6wj-swamp-20260828.231706.0-sha.ca29674e
swamp-20260828.231706.0-sha.ca29674e> shrinking /nix/store/4ppxg43gcm539c9pnhbhzlmm0apad6wj-swamp-20260828.231706.0-sha.ca29674e/bin/swamp
swamp-20260828.231706.0-sha.ca29674e> checking for references to /build/ in /nix/store/4ppxg43gcm539c9pnhbhzlmm0apad6wj-swamp-20260828.231706.0-sha.ca29674e...
swamp-20260828.231706.0-sha.ca29674e> patching script interpreter paths in /nix/store/4ppxg43gcm539c9pnhbhzlmm0apad6wj-swamp-20260828.231706.0-sha.ca29674e
swamp-20260828.231706.0-sha.ca29674e> wrapBuddy: wrapping paths: /nix/store/4ppxg43gcm539c9pnhbhzlmm0apad6wj-swamp-20260828.231706.0-sha.ca29674e
swamp-20260828.231706.0-sha.ca29674e> Using interpreter: /nix/store/n51dhmdbik1kfrsm62j5knavmigwrl1a-glibc-2.42-84/lib/ld-linux-x86-64.so.2
swamp-20260828.231706.0-sha.ca29674e> 64-bit stub: 407 bytes
swamp-20260828.231706.0-sha.ca29674e> 32-bit stub: 441 bytes
swamp-20260828.231706.0-sha.ca29674e> Patching: /nix/store/4ppxg43gcm539c9pnhbhzlmm0apad6wj-swamp-20260828.231706.0-sha.ca29674e/bin/swamp
swamp-20260828.231706.0-sha.ca29674e>   ELF class: 64-bit
swamp-20260828.231706.0-sha.ca29674e>   Original entry: 0x2271000 (file offset: 0x2270000)
swamp-20260828.231706.0-sha.ca29674e>   Available space at entry: 50417312 bytes
swamp-20260828.231706.0-sha.ca29674e>   Stub size: 407 bytes (padded to 416)
swamp-20260828.231706.0-sha.ca29674e>   Wrote config to /nix/store/4ppxg43gcm539c9pnhbhzlmm0apad6wj-swamp-20260828.231706.0-sha.ca29674e/bin/.swamp.wrapbuddy
swamp-20260828.231706.0-sha.ca29674e>   Overwrote 416 bytes at entry point
swamp-20260828.231706.0-sha.ca29674e>   Converted PT_INTERP to PT_NULL
swamp-20260828.231706.0-sha.ca29674e> Patched: /nix/store/4ppxg43gcm539c9pnhbhzlmm0apad6wj-swamp-20260828.231706.0-sha.ca29674e/bin/swamp
swamp-20260828.231706.0-sha.ca29674e> Running phase: installCheckPhase
swamp-20260828.231706.0-sha.ca29674e> Executing versionCheckPhase
swamp-20260828.231706.0-sha.ca29674e> Successfully managed to find version 20260828.231706.0-sha.ca29674e in the output of the command /nix/store/4ppxg43gcm539c9pnhbhzlmm0apad6wj-swamp-20260828.231706.0-sha.ca29674e/bin/swamp --version
swamp-20260828.231706.0-sha.ca29674e> swamp 20260828.231706.0-sha.ca29674e
swamp-20260828.231706.0-sha.ca29674e> Finished versionCheckPhase
swamp-20260828.231706.0-sha.ca29674e> no Makefile or custom installCheckPhase, doing nothing

post-build step Upload to niks3: ok
time=2026-08-29T13:42:05.279Z level=INFO msg="Uploading 1 paths to niks3.numtide.com (7 already cached)"
time=2026-08-29T13:42:05.279Z level=INFO msg="Uploading 4ppxg43gcm539c9pnhbhzlmm0apad6wj-swamp-20260828.231706.0-sha.ca29674e (350.9MB)"
time=2026-08-29T13:42:18.546Z level=INFO msg="Uploading 1 narinfos"
time=2026-08-29T13:42:18.888Z level=INFO msg="Upload complete. (14.052s)"