math/big: TestAliasing/Exp-XZ failures

[gopherbot]

#!watchflakes
default <- pkg == "math/big" && test == "TestAliasing/Exp-XZ"

Issue created automatically to collect these failures.

Example (log):

=== RUN   TestAliasing/Exp-XZ
--- FAIL: TestAliasing/Exp-XZ (0.00s)

— watchflakes

[gopherbot]

Found new dashboard test flakes for:

#!watchflakes
default <- pkg == "math/big" && test == "TestAliasing/Exp-XZ"

2025-02-28 22:09 gotip-linux-amd64-clang15 go@68949049 math/big.TestAliasing/Exp-XZ (log)

=== RUN   TestAliasing/Exp-XZ
--- FAIL: TestAliasing/Exp-XZ (0.00s)

— watchflakes