Debug logs not produced after upgrade to Zig 0.15.2

[zclawz]

Problem

After upgrading to Zig 0.15.2, zeam is no longer producing debug logs.

Context

• This issue started occurring post the upgrade to Zig 0.15.2
• The binary and Docker image are currently built in ReleaseFast mode, which suppresses debug logs — a ReleaseSafe build mode was previously discussed as a way to get more detailed output (see PR fix silent crashes during cached-block catch-up sync #681)
• It is unclear whether the regression is due to a Zig 0.15.2 behaviour change or a side-effect of the build mode

Steps to Reproduce

Run zeam and observe that no debug logs are emitted.

Expected Behaviour

Debug logs should be visible during development/devnet runs.

Suggested Investigation

• Check if Zig 0.15.2 changed any logging or build-mode behaviour
• Consider adding a ReleaseSafe build target to get more detailed runtime output
• Compare log output between Zig 0.14.x and 0.15.2 builds

Reported by

Partha (@ch4r10t33r) in the zeam community chat