Buildbot AMD64 Windows10 3.6 fails to compile: Cannot locate MSBuild.exe on PATH or as MSBUILD variable

[pablogsal]

BPO	33675
Nosy	@pfmoore, @vstinner, @tjguk, @ned-deily, @zware, @zooba, @pablogsal
Superseder	bpo-33614: Compilation of Python fails on AMD64 Windows8.1 Refleaks 3.x

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2018-05-28.23:18:38.285>
created_at = <Date 2018-05-28.22:41:18.201>
labels = ['build', 'OS-windows']
title = 'Buildbot AMD64 Windows10 3.6 fails to compile: Cannot locate MSBuild.exe on PATH or as MSBUILD variable'
updated_at = <Date 2018-05-28.23:18:38.285>
user = 'https://github.com/pablogsal'

bugs.python.org fields:

activity = <Date 2018-05-28.23:18:38.285>
actor = 'steve.dower'
assignee = 'none'
closed = True
closed_date = <Date 2018-05-28.23:18:38.285>
closer = 'steve.dower'
components = ['Build', 'Windows']
creation = <Date 2018-05-28.22:41:18.201>
creator = 'pablogsal'
dependencies = []
files = []
hgrepos = []
issue_num = 33675
keywords = []
message_count = 8.0
messages = ['317937', '317938', '317940', '317945', '317949', '317951', '317952', '317956']
nosy_count = 7.0
nosy_names = ['paul.moore', 'vstinner', 'tim.golden', 'ned.deily', 'zach.ware', 'steve.dower', 'pablogsal']
pr_nums = []
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '33614'
type = None
url = 'https://bugs.python.org/issue33675'
versions = ['Python 3.6']

[pablogsal]

It seems that since c489a76 the AMD64 Windows10 buildbot for Python3.6 fails to compile. Error log:

Using "C:\Program Files (x86)\MSBuild\14.0\bin\\msbuild.exe" (found in the registry)
Cannot locate MSBuild.exe on PATH or as MSBUILD variable
Deleting .pyc/.pyo files ...
Deleting test leftovers ...
Could Not Find D:\buildarea\3.6.bolen-windows10\build\Lib\.pyc
The system cannot find the file specified.
Could Not Find D:\buildarea\3.6.bolen-windows10\build\PCbuild\python.zip
Using "D:\buildarea\3.6.bolen-windows10\build\PCbuild\\..\externals\pythonx86\tools\python.exe" (found in externals directory)
Fetching external libraries...
bzip2-1.0.6 already exists, skipping.
openssl-1.0.2o already exists, skipping.
sqlite-3.21.0.0 already exists, skipping.
tcl-core-8.6.6.0 already exists, skipping.
tk-8.6.6.0 already exists, skipping.
tix-8.4.3.6 already exists, skipping.
xz-5.2.2 already exists, skipping.
Fetching external binaries...
nasm-2.11.06 already exists, skipping.
Finished.
Using "C:\Program Files (x86)\MSBuild\14.0\bin\\msbuild.exe" (found in the registry)
Cannot locate MSBuild.exe on PATH or as MSBUILD variable
program finished with exit code 2
elapsedTime=1.953000

[pablogsal]

http://buildbot.python.org/all/#/builders/31/builds/321

[ned-deily]

If it's a problem with a Windows build, you should add the Windows component so the Windows team is nosied. But, in this case, I think Steve has already fixed this.

[pablogsal]

Could http://buildbot.python.org/all/#/builders/90/builds/350 be related to this?

[vstinner]

It seems like a regression of bpo-33614.

[vstinner]

Similar failure on x86 Windows7 3.6:
http://buildbot.python.org/all/#builders/90/builds/350
"Cannot locate MSBuild.exe on PATH or as MSBUILD variable"

[vstinner]

AMD64 Windows10 3.7:
http://buildbot.python.org/all/#/builders/121/builds/256
"Cannot locate MSBuild.exe on PATH or as MSBUILD variable"

[zooba]

Already fixed in #51418, #51425 and #51426