Revert "Make scanr a good producer and consumer"

This reverts commit 4e1dfc37.

Due to #16943.
21 jobs for !1421 with wip/T16943 in 400 minutes and 19 seconds (queued for 3 seconds)
detached
Status Job ID Name Coverage
  Lint
passed #138031
lint
ghc-linters

00:00:16

passed #138032
lint
lint-linters

00:00:14

passed #138035
lint
lint-submods-mr

00:00:18

passed #138033
lint
lint-testsuite

00:00:15

passed #138034
lint
typecheck-testsuite

00:00:14

 
  Build
passed #138037
x86_64-linux
hadrian-ghc-in-ghci

00:21:31

passed #138039
x86_64-linux
release-x86_64-linux-deb9-dwarf

01:13:47

passed #138038
x86_64-linux
validate-x86_64-linux-deb9-debug

03:09:02

passed #138036
x86_64-linux
validate-x86_64-linux-deb9-hadrian

02:10:07

 
  Full Build
failed #138041
aarch64-linux allowed to fail
validate-aarch64-linux-deb9

02:59:39

passed #138042
x86_64-linux
validate-i386-linux-deb9

01:38:53

passed #138040
x86_64-darwin
validate-x86_64-darwin

00:57:58

passed #138043
x86_64-linux
validate-x86_64-linux-deb9-integer-simple

01:25:01

passed #138044
x86_64-linux
validate-x86_64-linux-deb9-unreg

02:04:37

passed #138045
x86_64-linux
validate-x86_64-linux-fedora27

01:46:46

failed #138047
x86_64-windows allowed to fail
validate-x86_64-windows

01:03:54

failed #138046
x86_64-windows allowed to fail
validate-x86_64-windows-hadrian

02:42:12

 
  Cleanup
passed #138048
x86_64-darwin
cleanup-darwin

00:00:05

 
  Packaging
passed #138049
x86_64-linux
doc-tarball

00:03:53

 
  Testing
manual #138050
x86_64-linux allowed to fail manual
hackage
passed #138051
x86_64-linux
perf-nofib

00:26:46

 
Name Stage Failure
failed
validate-aarch64-linux-deb9 Full Build
cp: error writing 'cabal-cache/world': No space left on device
Uploading artifacts...
ghc-*.tar.xz: found 1 matching files
junit.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=138041 responseStatus=201 Created token=SYdbuubN
Uploading artifacts...
junit.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=138041 responseStatus=201 Created token=SYdbuubN
ERROR: Job failed: exit code 1
failed
validate-x86_64-windows Full Build
junit.xml: found 1 matching files                  
WARNING: Failed to load system CertPool:crypto/x509: system root pool is not available on Windows
Uploading artifacts to coordinator... ok
id=138047 responseStatus=201 Created token=zKdEdksQ
Uploading artifacts...
Runtime platform
arch=amd64 os=windows pid=1696 revision=1f513601 version=11.10.1
junit.xml: found 1 matching files

WARNING: Failed to load system CertPool:crypto/x509: system root pool is not available on Windows
Uploading artifacts to coordinator... ok
id=138047 responseStatus=201 Created token=zKdEdksQ
ERROR: Job failed: exit status 2
failed
validate-x86_64-windows-hadrian Full Build
junit.xml: found 1 matching files                  
WARNING: Failed to load system CertPool:crypto/x509: system root pool is not available on Windows
Uploading artifacts to coordinator... ok
id=138046 responseStatus=201 Created token=YmWM9zvk
Uploading artifacts...
Runtime platform
arch=amd64 os=windows pid=5820 revision=1f513601 version=11.10.1
junit.xml: found 1 matching files

WARNING: Failed to load system CertPool:crypto/x509: system root pool is not available on Windows
Uploading artifacts to coordinator... ok
id=138046 responseStatus=201 Created token=YmWM9zvk
ERROR: Job failed: exit status 1