Timestamps in verbose output are not aligned

[sjakobi]

Some timestamps are missing the last digit. This makes the affected line stand out, decreasing readability.

Steps to reproduce:
Generate any sufficiently long output with the --verbose flag.

Expected:
The timestamps are all of the same length.

Actual:

$ stack clean --verbose
Version 0.1.7.0, Git revision 4617847506ef78b39d04bac68a7527493a2f9ece (dirty) (2412 commits) x86_64
2015-10-25 13:28:00.359226: [debug] Checking for project config at: /home/simon/test/tasty/stack.yaml @(stack_FHzONQT9HI3ATX2xQH198L:Stack.Config src/Stack/Config.hs:554:9)
2015-10-25 13:28:00.359807: [debug] Loading project config file stack.yaml @(stack_FHzONQT9HI3ATX2xQH198L:Stack.Config src/Stack/Config.hs:577:13)
2015-10-25 13:28:00.362628: [debug] Run process: ldd /home/simon/.local/bin/stack @(stack_FHzONQT9HI3ATX2xQH198L:System.Process.Read src/System/Process/Read.hs:272:3)
2015-10-25 13:28:00.386447: [debug] Trying to decode /home/simon/.stack/build-plan-cache/x86_64-linux/lts-3.10.cache @(stack_FHzONQT9HI3ATX2xQH198L:Data.Binary.VersionTagged src/Data/Binary/VersionTagged.hs:53:5)
2015-10-25 13:28:00.408778: [debug] Success decoding /home/simon/.stack/build-plan-cache/x86_64-linux/lts-3.10.cache @(stack_FHzONQT9HI3ATX2xQH198L:Data.Binary.VersionTagged src/Data/Binary/VersionTagged.hs:62:13)
2015-10-25 13:28:00.409335: [debug] Run process: ghc --info @(stack_FHzONQT9HI3ATX2xQH198L:System.Process.Read src/System/Process/Read.hs:272:3)
2015-10-25 13:28:00.466601: [debug] Run process: ghc --numeric-version @(stack_FHzONQT9HI3ATX2xQH198L:System.Process.Read src/System/Process/Read.hs:272:3)
2015-10-25 13:28:00.50423: [debug] Run process: ghc-pkg --no-user-package-db field --simple-output Cabal version @(stack_FHzONQT9HI3ATX2xQH198L:System.Process.Read src/System/Process/Read.hs:272:3)
2015-10-25 13:28:00.538937: [debug] Run process: ghc-pkg --no-user-package-db list --global @(stack_FHzONQT9HI3ATX2xQH198L:System.Process.Read src/System/Process/Read.hs:272:3)
2015-10-25 13:28:00.572439: [debug] Run process: locale -a @(stack_FHzONQT9HI3ATX2xQH198L:System.Process.Read src/System/Process/Read.hs:272:3)

Here is the stack --version output:

$ stack --version
Version 0.1.7.0, Git revision 4617847506ef78b39d04bac68a7527493a2f9ece (dirty) (2412 commits) x86_64