Skip to content

Upgrading chrono 0.3 to 0.4

Breaking0.3.0 → 0.4.45Breaking9Security1Platform4Deprecated14New203Changed47Fixed87Other118

Full comparisonBack to chrono
BreakingUpgrade verdict

9 breaking changes and 4 platform requirement changes and a security fix.

In plain terms
  • Drop stabilized feature doc_auto_cfg.
  • Drop deny lints, eager Debug impls are a mixed blessing.
  • Remove obsolete weird feature guard.
  • Remove rustc-serialize feature (.
Must act Top 5 of 28 that need code or config changes

Requires Rust 1.62.0 from 0.4.41 (none stated before).

What you must change

Breaking9
Drop stabilized feature doc_auto_cfg.
0.4.43GitHub ReleaseOriginalView source
Drop deny lints, eager Debug impls are a mixed blessing.
0.4.43GitHub ReleaseOriginalView source
Remove obsolete weird feature guard.
0.4.39GitHub ReleaseOriginalView source
Remove rustc-serialize feature (.
rustc-serialize
0.4.38GitHub ReleaseOriginalView source
Rename Duration to TimeDelta, add type alias.
DurationTimeDelta
0.4.34GitHub ReleaseOriginalView source
Remove num-iter dependency (.
0.4.26GitHub ReleaseOriginalView source
Drop the dependency on time v0.1, which is deprecated, unless the oldtime feature is active.
oldtimetime::Durationchrono::Duration
0.4.16GitHub ReleaseOriginalView source
Version 0.4.36 introduced an unexpected breaking change and was yanked.
LocalResultMappedLocalTimeResult
0.4.37GitHub ReleaseOriginalView source
format::Numeric and format::Fixed are marked as non_exhaustive.
format::Numericformat::Fixednon_exhaustive
0.4.35GitHub ReleaseOriginalView source
Security1
Potential segfault in localtime_r invocations
0.4.20OSV advisoryOriginalView source
Platform4
We had to bump our MSRV to 1.61 to keep building with our dependencies.
DateTime
0.4.32GitHub ReleaseOriginalView source
Bump MSRV to 1.61.
0.4.32GitHub ReleaseOriginalView source
Make methods on NaiveTime const, update MSRV to 1.57 (.
NaiveTime
0.4.27GitHub ReleaseOriginalView source
Bump the MSRV to 1.56.
0.4.25GitHub ReleaseOriginalView source

Deprecations to plan for

Deprecated14
Deprecate NaiveDateTime::UNIX_EPOCH.
NaiveDateTime::UNIX_EPOCH
0.4.41GitHub ReleaseOriginalView source
Revert TimeDelta deprecations.
TimeDelta
0.4.36GitHub ReleaseOriginalView source
Deprecate TimeStamp::timestamp_subsec_nanos, which was missed in the 0.4.35 release.
TimeStamp::timestamp_subsec_nanos
0.4.36GitHub ReleaseOriginalView source
We deprecated all timestamp-related methods on NaiveDateTime.
NaiveDateTimeDateTime<Utc>TimeZone.and_utc().naive_utc()
0.4.35GitHub ReleaseOriginalView source
The panicking constructors of TimeDelta (the new name of the Duration type) are deprecated.
TimeDeltaDuration
0.4.35GitHub ReleaseOriginalView source
Deprecate timestamp methods on NaiveDateTime.
NaiveDateTime
0.4.35GitHub ReleaseOriginalView source
Deprecate panicking constructors of TimeDelta.
TimeDelta
0.4.35GitHub ReleaseOriginalView source
Deprecate standalone format functions.
format
0.4.32GitHub ReleaseOriginalView source
Deprecate timestamp_nanos in favor of the non-panicking timestamp_nanos_opt.
timestamp_nanostimestamp_nanos_opt
0.4.31GitHub ReleaseOriginalView source
Deprecate TimeZone::datetime_from_str.
TimeZone::datetime_from_str
0.4.29GitHub ReleaseOriginalView source
Deprecate DateTime::{from_local, from_utc} (.
0.4.27GitHub ReleaseOriginalView source
Deprecate methods that have an _opt() alternative.
_opt()
0.4.23GitHub ReleaseOriginalView source
Deprecate usage of the Date type.
Date<Tz>
0.4.23GitHub ReleaseOriginalView source
More strongly deprecate RustcSerialize: remove it from documentation unless the feature is enabled, issue a deprecation warning if the rustc-serialize feature is enabled (@quodlibetor ).
0.4.2GitHub ReleaseOriginalView source