Bump CircleCi to 2.078.1

[wilzbach]

I can't reproduce the failures locally, so I assume bumping is the easiest
course of action.

[dlang-bot]

Thanks for your pull request, @wilzbach!

Bugzilla references

Your PR doesn't reference any Bugzilla issue.

If your PR contains non-trivial changes, please reference a Bugzilla issue or create a manual changelog.

[quickfur]

Sure, let's see if this helps things.

[wilzbach]

So I can reproduce the failure locally with:

. $(~/dlang/install.sh dmd-2.072.1 -a)
make -f posix.mak clean
make -f posix.mak std/traits.publictests

So DMD 2.072.1 is definitely running into an infinite loop here. Luckily that has been fixed...

[wilzbach]

Great - now we still have disabled DScanner as while running it, the GC is segfaulting (see #5929), but maybe that problem is now gone too...

edit: nope still there

Program received signal SIGSEGV, Segmentation fault.
0x0000000000a48e74 in analysis.incorrect_infinite_range.IncorrectInfiniteRangeCheck.visit() (this=0x7ffff7fc0b80, bs=0x0) at src/analysis/incorrect_infinite_range.d:53
53			if (bs.declarationsAndStatements is null)
#0  0x0000000000a48e74 in analysis.incorrect_infinite_range.IncorrectInfiniteRangeCheck.visit() (this=0x7ffff7fc0b80, bs=0x0) at src/analysis/incorrect_infinite_range.d:53
#1  0x0000000000a48e59 in analysis.incorrect_infinite_range.IncorrectInfiniteRangeCheck.visit() (this=0x7ffff7fc0b80, fb=0x3510378) at src/analysis/incorrect_infinite_range.d:48
#2  0x00000000008c1094 in dparse.ast.Destructor.accept() (this=0x3510238, visitor=0x7ffff7fc0b80) at libdparse/src/dparse/ast.d-mixin-1464:1465
#3  0x00000000008b9d8d in dparse.ast.ASTVisitor.visit() (this=0x7ffff7fc0b80, destructor=0x3510238) at libdparse/src/dparse/ast.d:211
#4  0x00000000008bf70e in dparse.ast.Declaration.accept() (this=0x35101f0, visitor=0x7ffff7fc0b80) at libdparse/src/dparse/ast.d:1292
#5  0x00000000008b9c8d in dparse.ast.ASTVisitor.visit() (this=0x7ffff7fc0b80, declaration=0x35101f0) at libdparse/src/dparse/ast.d:203
#6  0x00000000008c8445 in dparse.ast.StructBody.accept() (this=0x350cf98, visitor=0x7ffff7fc0b80) at libdparse/src/dparse/ast.d-mixin-2753:2753
#7  0x0000000000a48d8a in analysis.incorrect_infinite_range.IncorrectInfiniteRangeCheck.visit() (this=0x7ffff7fc0b80, structBody=0x350cf98) at src/analysis/incorrect_infinite_range.d:29
#8  0x00000000008c85c7 in dparse.ast.StructDeclaration.accept() (this=0x350cf08, visitor=0x7ffff7fc0b80) at libdparse/src/dparse/ast.d-mixin-2775:2777
#9  0x00000000008ba86d in dparse.ast.ASTVisitor.visit() (this=0x7ffff7fc0b80, structDeclaration=0x350cf08) at libdparse/src/dparse/ast.d:298
#10 0x00000000008bfaaf in dparse.ast.Declaration.accept() (this=0x350cec0, visitor=0x7ffff7fc0b80) at libdparse/src/dparse/ast.d:1292
#11 0x00000000008b9c8d in dparse.ast.ASTVisitor.visit() (this=0x7ffff7fc0b80, declaration=0x350cec0) at libdparse/src/dparse/ast.d:203
#12 0x00000000008beaba in dparse.ast.ConditionalDeclaration.accept() (this=0x350cdd8, visitor=0x7ffff7fc0b80) at libdparse/src/dparse/ast.d-mixin-1177:1178
#13 0x00000000008b9bad in dparse.ast.ASTVisitor.visit() (this=0x7ffff7fc0b80, conditionalDeclaration=0x350cdd8) at libdparse/src/dparse/ast.d:196
#14 0x00000000008bf654 in dparse.ast.Declaration.accept() (this=0x350cd90, visitor=0x7ffff7fc0b80) at libdparse/src/dparse/ast.d:1292
#15 0x00000000008b9c8d in dparse.ast.ASTVisitor.visit() (this=0x7ffff7fc0b80, declaration=0x350cd90) at libdparse/src/dparse/ast.d:203
#16 0x00000000008c507d in dparse.ast.Module.accept() (this=0x2aa4450, visitor=0x7ffff7fc0b80) at libdparse/src/dparse/ast.d-mixin-2214:2216
#17 0x00000000008ba3ed in dparse.ast.ASTVisitor.visit() (this=0x7ffff7fc0b80, module_=0x2aa4450) at libdparse/src/dparse/ast.d:262
#18 0x00000000009f0927 in analysis.run.analyze() (staticAnalyze=true, tokens=..., moduleCache=..., analysisConfig=..., m=0x2aa4450, fileName=...) at src/analysis/run.d:498
#19 0x00000000009edb04 in analysis.run.analyze() (staticAnalyze=true, moduleCache=..., cache=..., config=..., fileNames=...) at src/analysis/run.d:182
#20 0x00000000009d57ef in D main (args=...) at src/main.d:237
#21 0x0000000000a7136c in rt.dmain2._d_run_main() (this=0x7fffffffe3e0) at src/rt/dmain2.d:500
#22 0x0000000000a711b4 in rt.dmain2._d_run_main() (this=0x7fffffffe3e0, dg=...) at src/rt/dmain2.d:461
#23 0x0000000000a712c1 in rt.dmain2._d_run_main() (this=0x7fffffffe3e0) at src/rt/dmain2.d:500