container: wrap container init start errors

This helps indicate the exact origin and nature of the error. This eliminates generic WrapErr from container.

Signed-off-by: Ophestra <cat@gensokyo.uk>

container/msg.go

@@ -1,25 +1,17 @@
 package container
 
 import (
-	"errors"
-	"fmt"
 	"log"
-	"os"
-	"reflect"
 	"sync/atomic"
-	"testing"
 )
 
 type Msg interface {
 	IsVerbose() bool
 	Verbose(v ...any)
 	Verbosef(format string, v ...any)
-	WrapErr(err error, a ...any) error
-	PrintBaseErr(err error, fallback string)
 
 	Suspend()
 	Resume() bool
-
 	BeforeExit()
 }
 
@@ -37,32 +29,6 @@ func (msg *DefaultMsg) Verbosef(format string, v ...any) {
 	}
 }
 
-// checkedWrappedErr implements error with strict checks for wrapped values.
-type checkedWrappedErr struct {
-	err error
-	a   []any
-}
-
-func (c *checkedWrappedErr) Error() string { return fmt.Sprintf("%v, a = %s", c.err, c.a) }
-func (c *checkedWrappedErr) Is(err error) bool {
-	var concreteErr *checkedWrappedErr
-	if !errors.As(err, &concreteErr) {
-		return false
-	}
-	return reflect.DeepEqual(c, concreteErr)
-}
-
-func (msg *DefaultMsg) WrapErr(err error, a ...any) error {
-	// provide a mostly bulletproof path to bypass this behaviour in tests
-	if testing.Testing() && os.Getenv("GOPATH") != Nonexistent {
-		return &checkedWrappedErr{err, a}
-	}
-
-	log.Println(a...)
-	return err
-}
-func (msg *DefaultMsg) PrintBaseErr(err error, fallback string) { log.Println(fallback, err) }
-
 func (msg *DefaultMsg) Suspend()     { msg.inactive.Store(true) }
 func (msg *DefaultMsg) Resume() bool { return msg.inactive.CompareAndSwap(true, false) }
 func (msg *DefaultMsg) BeforeExit()  {}