SelfTest is throwing a ShellFailed error

[flexiondotorg]

During the installation of Determinate Nix via the action, the SelfTest is failing. Here's a log capturing the error:

Installing Determinate Nix using the --determinate flag
/home/runner/work/_temp/nix-installer-0685cae1-1701-42cb-9ef2-6a0d947ffbad/nix-installer install linux --determinate
 INFO nix-installer v0.34.0
`nix-installer` needs to run as `root`, attempting to escalate now via `sudo`...
 INFO nix-installer v0.34.0
 INFO Step: Create directory `/nix`
 INFO Step: Install Determinate Nixd
 INFO Step: Provision Nix
Received 35441700 of 35441700 (100.0%), 16.9 MBs/sec
 INFO Step: Create build users (UID 30001-30032) and group (GID 30000)
 INFO Step: Configure Nix
 INFO Step: Create directory `/etc/tmpfiles.d`
 INFO Step: Configure the Determinate Nix daemon
 INFO Step: Remove directory `/nix/temp-install-dir`
 WARN SelfTest([ShellFailed { shell: Sh, command: "\"sh\" \"-lc\" \"nix build --option substitute false --no-link --expr \\'derivation { name = \\\"self-test-sh-1737643290519\\\"; system = \\\"x86_64-linux\\\"; builder = \\\"/bin/sh\\\"; args = [\\\"-c\\\" \\\"echo hello > \\\\$out\\\"]; }\\'\"", output: Output { status: ExitStatus(unix_wait_status(256)), stdout: "", stderr: "this derivation will be built:\n  /nix/store/1ksz3dqmz8gisnigyy5ag1g7l6b8s273-self-test-sh-1737643290519.drv\nbuilding '/nix/store/1ksz3dqmz8gisnigyy5ag1g7l6b8s273-self-test-sh-1737643290519.drv'...\nerror: program '/nix/var/determinate/post-build-hook.sh' failed with exit code 1\n" } }, ShellFailed { shell: Bash, command: "\"bash\" \"-lc\" \"nix build --option substitute false --no-link --expr \\'derivation { name = \\\"self-test-bash-1737643290661\\\"; system = \\\"x86_64-linux\\\"; builder = \\\"/bin/sh\\\"; args = [\\\"-c\\\" \\\"echo hello > \\\\$out\\\"]; }\\'\"", output: Output { status: ExitStatus(unix_wait_status(256)), stdout: "", stderr: "this derivation will be built:\n  /nix/store/zkmbwy2wpgxv4ljqf0zi01frqpklxw4x-self-test-bash-1737643290661.drv\nbuilding '/nix/store/zkmbwy2wpgxv4ljqf0zi01frqpklxw4x-self-test-bash-1737643290661.drv'...\nerror: program '/nix/var/determinate/post-build-hook.sh' failed with exit code 1\n" } }])
Nix was installed successfully!