use time::SystemTime instead of time::Instant #1706
Merged
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time::Instant may use libc::clock_gettime(CLOCK_MONOTONIC) eg. on android and does not advance while being in deep sleep mode. therefore, time::Instant is not a reliable way for timeouts or stoping times.
we experienced that issue the first time when showing the "uptime" in info-dialog. see #1437 and https://users.rust-lang.org/t/std-now-with-android/41774 for some backgrounds.
closes #1437