Unclear failures in autotools build

Since #4153, it's really hard to tell what's failing in the autotools build. For instance, what is failing here?

: installing package Book3264Examples
/usr/bin/install -c -d Book3264Examples-temporary
make: Entering directory `/Users/runner/work/M2/M2/M2/BUILD/build/Macaulay2/packages/Book3264Examples-temporary'
cd Book3264Examples-temporary && /Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/aarch64-Darwin-MacOS-15.7.4/bin/M2  -q --stop --silent --no-preload -e errorDepth=0 -e debugLevel=0  -e "installPackage(\"Book3264Examples\", MakeDocumentation => true, MakeHTML => true, MakeInfo => true, MakePDF => false, RemakeAllDocumentation => false, IgnoreExampleErrors => false, RerunExamples => false, CheckDocumentation => true, UserMode => false, Verbose => false, InstallPrefix => \"/Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/\", SeparateExec => true, DebuggingMode => true); exit 0"
 -- 1.9511s elapsed
 -- capturing example results for "qsAlgorithm"                              -- .218327s elapsed
 -- capturing example results for "qsIsomorphism"                            -- capture failed; retrying ...
 -- making example results for "qsIsomorphism"                               -- capturing example results for "Intersection Theory Section 5.4.3"        -- capture failed; retrying ...
 -- making example results for "Intersection Theory Section 5.4.3"           -- 1.94973s elapsed
 -- 2.66696s elapsed
 -- capturing example results for "Intersection Theory Section 5.4.4"        -- capture failed; retrying ...
 -- making example results for "Intersection Theory Section 5.4.4"           -- 2.53047s elapsed
 -- capturing example results for "Intersection Theory Section 5.4.1-2"      -- capture failed; retrying ...
 -- making example results for "Intersection Theory Section 5.4.1-2"         -- warning: missing node: getMaxIdeal(...,Verbose=>...) cited by getMaxIdeal
 -- warning: missing node: patch(...,Verbose=>...) cited by patch
 -- warning: missing node: changeVar(...,Verbose=>...) cited by changeVar
 -- warning: missing node: completeMatrix(...,Verbose=>...) cited by completeMatrix
 -- 2.33256s elapsed
 -- capturing example results for "Intersection Theory Section 4.1"          -- capture failed; retrying ...
 -- making example results for "Intersection Theory Section 4.1"             -- warning: missing node: qsAlgorithm(...,Verbose=>...) cited by qsAlgorithm
 -- warning: missing node: computeFreeBasis(...,Verbose=>...) cited by computeFreeBasis
 -- warning: missing node: qsIsomorphism(...,Verbose=>...) cited by qsIsomorphism
make: Leaving directory `/Users/runner/work/M2/M2/M2/BUILD/build/Macaulay2/packages/QuillenSuslin-temporary'
ls -l QuillenSuslin-temporary
total 0
rm -rf QuillenSuslin-temporary
if [ -e /Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/common/share/info/QuillenSuslin.info ]; then install-info --info-dir=/Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/common/share/info /Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/common/share/info/QuillenSuslin.info; fi
: installing package WeilDivisors
/usr/bin/install -c -d WeilDivisors-temporary
make: Entering directory `/Users/runner/work/M2/M2/M2/BUILD/build/Macaulay2/packages/WeilDivisors-temporary'
cd WeilDivisors-temporary && /Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/aarch64-Darwin-MacOS-15.7.4/bin/M2  -q --stop --silent --no-preload -e errorDepth=0 -e debugLevel=0  -e "installPackage(\"WeilDivisors\", MakeDocumentation => true, MakeHTML => true, MakeInfo => true, MakePDF => false, RemakeAllDocumentation => false, IgnoreExampleErrors => false, RerunExamples => false, CheckDocumentation => true, UserMode => false, Verbose => false, InstallPrefix => \"/Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/\", SeparateExec => true, DebuggingMode => true); exit 0"
 -- 2.31351s elapsed
 -- capturing example results for "Intersection Theory Section 4.2"          -- capture failed; retrying ...
 -- making example results for "Intersection Theory Section 4.2"            ../../../../../Macaulay2/m2/methods.m2:400:20:(1):[15]: error: can't convert symbol 'Safe' to external string because it is shadowed by 'Safe' and there is no synonym
../../../../../Macaulay2/packages/TestIdeals/frobeniusPowers.m2:98:35-98:39: here is the first use of 'Safe'
-* invalid file position *-: here is the first use of 'Safe'
../../../../../Macaulay2/m2/nets.m2:85:98:(1):[13]: --back trace--
../../../../../Macaulay2/m2/nets.m2:85:33:(1):[12]: --back trace--
../../../../../Macaulay2/m2/packages.m2:593:53:(1):[10]: --back trace--
../../../../../Macaulay2/m2/installPackage.m2:755:44:(1):[9]: --back trace--
../../../../../Macaulay2/m2/installPackage.m2:752:12:(1):[8]: --back trace--
../../../../../Macaulay2/m2/methods.m2:154:98:(1):[7]: --back trace--
../../../../../Macaulay2/m2/option.m2:17:14:(1):[6]: --back trace--
../../../../../Macaulay2/m2/installPackage.m2:668:18:(1):[5]: --back trace--
../../../../../Macaulay2/m2/methods.m2:154:98:(1):[4]: --back trace--
../../../../../Macaulay2/m2/option.m2:17:14:(1):[3]: --back trace--
currentString:1:14:(3):[2]: --back trace--
../../../../../Macaulay2/m2/startup.m2.in:557:36:(0):[1]: --back trace--
../../../../../Macaulay2/m2/startup.m2.in:635:41:(2): --back trace--
make[2]: *** [Makefile:108: /Users/runner/work/M2/M2/M2/BUILD/build/usr-dist/aarch64-Darwin-MacOS-15.7.4/lib/Macaulay2/WeilDivisors/.installed] Error 1
make[2]: *** Waiting for unfinished jobs....
 -- 2.04219s elapsed

Start with the WeilDivisors install target at Makefile:108 and the linked GitHub Actions run, then trace the error through m2/installPackage.m2 and m2/methods.m2. Reproduce the autotools build and determine how the reported failure can identify the underlying error instead of only showing capture retries; done means the failing package and cause are clear in the build output.