Strict JSON parsing #12581

Job	Run time
plugins (windows-latest)	6m 29s
fmt-clippy (windows-latest, default)	6m 2s
plugins (macos-latest)	3m 54s
fmt-clippy (windows-latest, extra)	5m 2s
plugins (ubuntu-20.04)	1m 11s
std-lib-and-python-virtualenv (ubuntu-20.04, py)	2m 35s
tests (windows-latest, default)	9m 52s
fmt-clippy (macos-latest, default)	4m 42s
std-lib-and-python-virtualenv (macos-latest, py)	4m 48s
tests (macos-latest, default)	7m 46s
fmt-clippy (macos-latest, extra)	3m 15s
std-lib-and-python-virtualenv (windows-latest, py)	10m 57s
fmt-clippy (ubuntu-20.04, default)	1m 29s
tests (ubuntu-20.04, default)	3m 25s
fmt-clippy (ubuntu-20.04, dataframe)	2m 18s
fmt-clippy (ubuntu-20.04, extra)	1m 35s
tests (ubuntu-20.04, dataframe)	5m 7s
tests (ubuntu-20.04, extra)	3m 31s
	1h 23m 58s

Provide feedback