rustbuild: Clean more on make clean

[alexcrichton]

Be sure to not use the old build cache for the bootstrap build system nor the
old caches of the compiler/cargo extractions (in case something went wrong).

Closes #33986

[rust-highfive]

r? @aturon

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[aturon]

@bors: r+

[bors]

📌 Commit ac19420 has been approved by aturon

[bors]

⌛ Testing commit ac19420 with merge 6745297...

[bors]

💔 Test failed - auto-win-gnu-32-opt-rustbuild

[alexcrichton]

@bors: retry

• Spurious "filename too long" failure on bots #33844

cc @retep998, failing command line:

note: "gcc" "-Wl,--enable-long-section-names" "-fno-use-linker-plugin" "-Wl,--nxcompat" "-nostdlib" "-Wl,--large-address-aware" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2\\lib\\rustlib\\i686-pc-windows-gnu\\lib\\crt2.o" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2\\lib\\rustlib\\i686-pc-windows-gnu\\lib\\rsbegin.o" "-L" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2\\lib\\rustlib\\i686-pc-windows-gnu\\lib" "C:\\Users\\RUSTBU~1\\AppData\\Local\\Temp\\rustdoctest.BwMmbZ1jJDyY\\rust_out.0.o" "-o" "C:\\Users\\RUSTBU~1\\AppData\\Local\\Temp\\rustdoctest.BwMmbZ1jJDyY\\rust_out.exe" "-Wl,--gc-sections" "-nodefaultlibs" "-L" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release\\deps" "-L" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release" "-L" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release\\build\\alloc_jemalloc-251d3635b190c547\\out/lib" "-L" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release\\build\\std-b6c7401b64554a8e\\out/.libs" "-L" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2\\lib\\rustlib\\i686-pc-windows-gnu\\lib" "-Wl,-Bstatic" "-Wl,-Bdynamic" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release\\deps\\libstd-9155338590fead51.rlib" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2\\lib\\rustlib\\i686-pc-windows-gnu\\lib\\libcollections-42c2372e64b992cb.rlib" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release\\deps\\libpanic_unwind-3d50b641895f0f51.rlib" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release\\deps\\librustc_unicode-f78262cffb9aaffc.rlib" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release\\deps\\libunwind-e0c4676abffd20e8.rlib" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release\\deps\\librand-a5ad246e2bda752b.rlib" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release\\deps\\liblibc-7f852771f3f101ed.rlib" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release\\deps\\liballoc-c48ed75dbdecc32f.rlib" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2\\lib\\rustlib\\i686-pc-windows-gnu\\lib\\liballoc_system-654c6d3f5f8e32c4.rlib" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2-std\\i686-pc-windows-gnu\\release\\deps\\libcore-59d138fb210ee147.rlib" "-l" "advapi32" "-l" "ws2_32" "-l" "userenv" "-l" "shell32" "-l" "gcc_eh" "-l" "gcc_eh" "-l" "compiler-rt" "-lmingwex" "-lmingw32" "-lgcc" "-lmsvcrt" "-luser32" "-lkernel32" "C:\\bot\\slave\\auto-win-gnu-32-opt-rustbuild\\build\\obj\\build\\i686-pc-windows-gnu\\stage2\\lib\\rustlib\\i686-pc-windows-gnu\\lib\\rsend.o"

That's unfortunately only 3600 characters long, not anywhere near the 32KB

[retep998]

I'm at a loss for what the problem is then, unless it is an argument to CreateProcess other than the command itself, or maybe something being called inside Command::spawn.

[bors]

⌛ Testing commit ac19420 with merge 974aedc...

[bors]

💔 Test failed - auto-win-gnu-32-opt-rustbuild

[alexcrichton]

@bors: retry

• rustc's munging of PATH environment is racy when run in parallel #17360

On Fri, Jun 3, 2016 at 5:22 PM, bors notifications@github.com wrote:

💔 Test failed - auto-win-gnu-32-opt-rustbuild
http://buildbot.rust-lang.org/builders/auto-win-gnu-32-opt-rustbuild/builds/1345

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[bors]

⌛ Testing commit ac19420 with merge 4fb1458...

[bors]

☀️ Test successful - auto-linux-32-nopt-t, auto-linux-32-opt, auto-linux-32cross-opt, auto-linux-64-cargotest, auto-linux-64-cross-armhf, auto-linux-64-cross-armsf, auto-linux-64-cross-freebsd, auto-linux-64-cross-netbsd, auto-linux-64-debug-opt, auto-linux-64-nopt-t, auto-linux-64-opt, auto-linux-64-opt-mir, auto-linux-64-opt-rustbuild, auto-linux-64-x-android-t, auto-linux-cross-opt, auto-linux-musl-64-opt, auto-mac-32-opt, auto-mac-64-nopt-t, auto-mac-64-opt, auto-mac-64-opt-rustbuild, auto-mac-cross-ios-opt, auto-win-gnu-32-nopt-t, auto-win-gnu-32-opt, auto-win-gnu-32-opt-rustbuild, auto-win-gnu-64-nopt-t, auto-win-gnu-64-opt, auto-win-msvc-32-cross-opt, auto-win-msvc-32-opt, auto-win-msvc-64-cargotest, auto-win-msvc-64-opt, auto-win-msvc-64-opt-mir, auto-win-msvc-64-opt-rustbuild