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Please pay attention to random failures.
https://mstdn.maud.io/@omasanori"The [ and test commands must be placed together in either /bin or /usr/bin."
"The requirement for the [ and test commands to be included as binaries (even if implemented internally by the shell) is shared with the POSIX.1-2008 standard."
https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch03s04.html