[R-pkg-devel] Failed: Future File Timestamp Check

It has to have the "datetime" entry. If you can't fix your network you

can skip that test with

_R_CHECK_FUTURE_FILE_TIMESTAMPS_=FALSE

I'm quite sure that is overridden 'R CMD check' when using the
--as-cran flag. The workaround that I have found is to set environment
variable:

_R_CHECK_SYSTEM_CLOCK_=FALSE

I have observed <http://worldtimeapi.org/api/timezone/etc/UTC> timing
out a lot over the last couple of months from several different
networks and hosts. I've seen it happen in the past too (last couple
of years), but it has got considerably worse recently. Maybe they're
throttling in per IP(?). I consider it quite unreliable these days, so
I use _R_CHECK_SYSTEM_CLOCK_=FALSE by default now.

/Henrik

On Tue, Feb 4, 2025 at 5:50?PM Simon Urbanek
<simon.urbanek at r-project.org> wrote:

Josiah,

that test tests the accuracy of the system clock by querying

https://worldtimeapi.org/api/timezone/etc/UTC so my guess would be that
you have either network or proxy issues which cause that request to fail by
providing garbage instead of the actual response.

The call to test yourself is

readLines("http://worldtimeapi.org/api/timezone/etc/UTC", warn=FALSE)

[1]

"{\"utc_offset\":\"+00:00\",\"timezone\":\"Etc/UTC\",\"day_of_week\":3,\"day_of_year\":36,\"datetime\":\"2025-02-05T01:42:19.272728+00:00\",\"utc_datetime\":\"2025-02-05T01:42:19.272728+00:00\",\"unixtime\":1738719739,\"raw_offset\":0,\"week_number\":6,\"dst\":false,\"abbreviation\":\"UTC\",\"dst_offset\":0,\"dst_from\":null,\"dst_until\":null,\"client_ip\":\"121.98.39.155\"}"

It has to have the "datetime" entry. If you can't fix your network you

can skip that test with

_R_CHECK_FUTURE_FILE_TIMESTAMPS_=FALSE

Cheers,
Simon

On Feb 5, 2025, at 10:11 AM, Josiah Parry <josiah.parry at gmail.com>

wrote:

I'm running R CMD check for my package {calcite} (source:
https://github.com/r-arcGIS/calcite) which is failing due to what

*looks* like

a bug.

R CMD check fails at "checking for future file timestamps"

I get this error:  ...Error in if (abs(unclass(now_local) -
unclass(now)[1]) > 300) missing value where TRUE/FALSE needed.

It seems that an NA is being generated somehow during this check but

I'm

unsure how.

One thing that comes to mind is that the file that contains all of my
function definitions is generated using writeLines() but the output of

`

file.info()` looks normal to me.

Have others encountered this? I'm on R 4.4.0 Puppy Cup

platform       aarch64-apple-darwin20
arch           aarch64
os             darwin20
system         aarch64, darwin20
status
major          4
minor          4.0
year           2024
month          04
day            24
svn rev        86474
language       R
version.string R version 4.4.0 (2024-04-24)
nickname       Puppy Cup

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