It settles, and for most people it's somewhere between two and four months rather than six weeks. What changes isn't the noise, it's that your brain reclassifies the van as home rather than as somewhere temporary and exposed.
Things that sped it up for me:
proper blackout window covers that also block the view in. Knowing nobody can see you matters more psychologically than the darkness does
earplugs, which feel counterintuitive when you're worried about hearing something, but the thing you'd need to hear is loud and everything you're waking for isn't
a consistent parking type. Alternating between city streets and remote pull-offs kept resetting me. Six weeks of the same kind of spot and my body stopped treating each one as new
lock the cab, keep the keys somewhere you can reach from bed, and have a plan for driving off in ten seconds. Knowing you have an exit stops the brain rehearsing it at 2am
Mutex is fine and I'd take it over a channel every time here. It's three lines, everyone reading the code understands it instantly, and you can extend it to two related fields later without redesigning anything. Reach for atomic when profiling tells you to.
Whatever the cause, put the pump on a switch by the door and get in the habit of killing it when you leave and at night. Everyone with a van plumbing horror story starts it with "the pump was on while we were out".
Also check the cassette lockring is actually tight. It should be somewhere around 40Nm and hand tight is nowhere near that. A slightly loose cassette lets the small cogs move under load and produces exactly this symptom.
Second thing to check: quilt attachment. If you don't have the pad straps snugged, cold air pumps in and out along your sides every time you roll over. Mine went from marginal at 40 to fine at 30 with nothing but tightening the straps and clipping the footbox shut properly.
Food markets and street stalls are the gentlest version. Standing up eating something with twenty other people doing the same is socially invisible, and it's usually the better food anyway. Work up to sit-down places if you want, or don't.
Order of operations for anyone reading later: shoulders, then chest, then everything else. Sleeve length, waist suppression, and jacket length are all cheap alterations. Shoulders are not. Buy for the shoulder even if the rest looks wrong on the hanger.
Worth checking whether it's condensation at all before you rebuild the ceiling. Water tracking in around a roof vent flange or a solar mount will also appear as drips near the ribs and get blamed on insulation. Run a hose over the roof on a dry day and watch inside.
The detector only reports races it actually observes, so "can't reproduce" mostly means "haven't hammered it enough". Try go test -race -count=200 -cpu=1,2,4,8 ./internal/cache. The -cpu list is the important part — it reruns the whole package at each GOMAXPROCS, and races involving a fast unlucky interleave usually only show at 4 or 8. Your CI box probably has more cores than you think, or fewer.
Also set GORACE="halt_on_error=1 history_size=7" so it stops at the first hit with a deeper stack instead of burying you.
2500km of glassy urban cycle path is roughly the end of life for a normal tyre. Look at the crown for square cuts and embedded specks. When it starts collecting glass faster than it sheds it, that's the tyre telling you. A commuter tyre with a proper puncture belt costs more and lasts twice as long in that environment.
Also sanity-check the shunt configuration. If the battery capacity is set wrong in the monitor, or the shunt isn't on the main negative with every single load downstream of it, the percentage it shows is fiction. A common build error is running one circuit direct to the negative bus and bypassing the shunt entirely.
Rewrite the whole thing on golang.org/x/sync/errgroup with errgroup.WithContext. You lose the manual WaitGroup, the first error cancels the shared context, and Wait returns it. I have not hand-rolled a pool in about four years and I do not miss it.
Bottle swapping in winter is worse than people expect. In sustained cold you'll go through a lot more than you plan for, and finding an open exchange on a Sunday in a small town in January is its own hobby. Diesel you top up wherever you fill the van.
Second hand welted shoes are the genuinely cheap answer. Good shoes get bought, worn a dozen times, and sold on because they didn't fit. I've picked up two pairs for under 80 each that needed nothing but new laces and a polish. Sizing is the risk, so buy brands you've already tried on.
Worth saying that a rack also unlocks a top box or a crate for the days you need to bring something awkward. That flexibility is half the value and nobody mentions it in the pannier versus backpack debate.
Having owned both: the tumbler's real advantage is that it's tidy and you'll actually keep using it. My pallet bin worked better and looked like a mess, and in a small garden overlooked by neighbours that mattered more than I expected.