Go "too many errors" during build - Fix in CI

By Daniel Zoghalchali·Latchkey

The Go compiler prints up to a fixed number of errors per package, then stops with too many errors. The remaining failures are hidden, and they almost always cascade from the first one.

What this error means

A build ends with a list of compile errors followed by too many errors. The cascade usually starts from a single root cause - a missing import, a renamed type, or a broken signature - that triggers many downstream errors.

./handlers.go:12:9: undefined: Request
./handlers.go:19:14: undefined: Request
./handlers.go:27:21: undefined: Request
too many errors

Common causes

A single root cause cascades

An undefined type or missing import is referenced many times, producing one error per use until the cap is hit.

A broken signature breaks every caller

A changed function signature fails at every call site, flooding the error list.

How to fix it

Fix the first error first

1. Address the topmost error; the cascade usually disappears with it.
2. Rebuild and repeat until clean.

go build ./...

Raise the error limit to see more

1. Pass -e to gcflags so the compiler prints all errors, not just the first batch.

go build -gcflags=-e ./...

How to prevent it

• Build locally and fix errors top-down before pushing.
• Keep signatures and shared types stable across a change.
• Use -gcflags=-e when you need the full error list.

Frequently asked questions

Related guides

References

• Go documentation
• GitHub Actions documentation