generate unique temporary directories

[github-actions[bot]]

Coverage after merging fix-tmp-directory-names into master will be

84.64%	0.00%

Coverage Report

File	Stmts	Branches	Funcs	Lines	Uncovered Lines
src
checker.cc	60.14%	100%	78.57%	58.06%	100, 118, 148–151, 154–157, 159, 161–167, 171–174, 176–180, 187–189, 196–201, 26–27, 29, 32, 35–36, 39, 41–42, 63–64, 95–99
checker.h	100%	100%	100%	100%
config.cc	68.72%	100%	75%	68.06%	101–103, 136, 144–145, 148–149, 156, 160, 163, 169–170, 172–173, 177–178, 180–181, 183–184, 186–189, 191, 194, 199, 203, 208, 274, 288, 299–301, 304–306, 311, 340–341, 73, 75–82, 84–85, 88–91, 93–94, 96–98
config.h	100%	100%	100%	100%
log.cc	100%	100%	100%	100%
log.h	90.70%	100%	81.82%	100%
main.cc	83.58%	100%	100%	82.81%	13, 23, 52–54, 66–71
optimizer.cc	99%	100%	100%	98.89%	382–383, 443–444
parser.cc	85.33%	100%	92.31%	84.18%	120–122, 127–128, 150–154, 156–158, 179, 190, 209–213, 216–220
parser.h	100%	100%	100%	100%
utils.cc	79.49%	100%	90%	77.94%	40, 47–50, 52, 54, 62–65, 69, 75, 98–99
src/ast
action.cc	82.22%	100%	72.73%	85.29%	48–49, 52–53, 6
action.h	100%	100%	100%	100%
alternation.cc	90%	100%	88.24%	90.41%	110–111, 19–20, 54, 6, 69
alternation.h	100%	100%	100%	100%
capture.cc	69.84%	100%	66.67%	70.59%	21–22, 26–27, 37, 42, 45, 5, 59, 67–68, 75–76, 79–80
capture.h	100%	100%	100%	100%
character_class.cc	91.53%	100%	91.30%	91.56%	11–14, 159, 177–179, 39, 42–43, 58–59
character_class.h	100%	100%	100%	100%
code.cc	78.05%	100%	71.43%	79.41%	29, 37, 43–44, 7–9
code.h	100%	100%	100%	100%
directive.cc	91.55%	100%	75%	93.65%	5, 79, 88–89
directive.h	100%	100%	100%	100%
expand.cc	80.43%	100%	72.73%	82.86%	20, 4, 42–43, 46–47
expand.h	100%	100%	100%	100%
grammar.cc	80.31%	100%	78.57%	80.53%	123, 133, 135–136, 141, 147–148, 17–18, 20–22, 47, 5, 68–69, 81, 87–88, 9, 96–97
grammar.h	100%	100%	100%	100%
group.cc	90.28%	100%	100%	87.72%	21–22, 26–27, 42, 45, 59
group.h	100%	100%	100%	100%
node.cc	74.76%	100%	80%	73.86%	111–127, 13, 131–132, 14, 28, 71
node.h	93.59%	100%	92%	96.43%	97
reference.cc	90.91%	100%	90.91%	90.91%	19, 41, 45, 5
reference.h	100%	100%	100%	100%
rule.cc	76.74%	100%	72.22%	77.94%	22–23, 37, 5, 54, 66–69, 76–79, 82–83
rule.h	100%	100%	100%	100%
sequence.cc	92.63%	100%	94.44%	92.21%	16–17, 4, 48, 57, 83
sequence.h	100%	100%	100%	100%
string.cc	97.37%	100%	100%	96.43%	22
string.h	100%	100%	100%	100%
term.cc	86.78%	100%	88.24%	86.43%	110, 122, 124, 155–157, 179–181, 183–185, 4, 59–60, 73–74, 90, 98
term.h	100%	100%	100%	100%

[masatake]

Looks good to me.