rust `make check` on mingw-w64 (32bit)

gistfile1.txt

$ make check

...

failures:
    [run-pass] run-pass/extern-pass-TwoU64s-ref.rs
    [run-pass] run-pass/extern-pass-TwoU64s.rs
    [run-pass] run-pass/extern-return-TwoU64s.rs
    [run-pass] run-pass/glob-std.rs
    [run-pass] run-pass/linkage-visibility.rs
    [run-pass] run-pass/signal-exit-status.rs
    [run-pass] run-pass/struct-return.rs
    [run-pass] run-pass/struct-update-moves-and-copies.rs
    [run-pass] run-pass/tempfile.rs

test result: FAILED. 1310 passed; 9 failed; 54 ignored; 0 measured

---

$ git rev-parse HEAD
1bfa45cfd9d7c8b2dcc0ea7a42396624e8b5a31b

$ gcc -v
Using built-in specs.
COLLECT_GCC=c:\home\usr\mingw-builds\x32-4.8.1-win32-dwarf-rev5\mingw32\bin\gcc.exe
COLLECT_LTO_WRAPPER=c:/home/usr/mingw-builds/x32-4.8.1-win32-dwarf-rev5/mingw32/bin/../libexec/gcc/i686-w64-mingw32/4.8.1/lto-wrapper.exe
Target: i686-w64-mingw32
...
Thread model: win32
gcc version 4.8.1 (rev5, Built by MinGW-W64 project)