Pub fetch lists wrong outdated dependencies

[zoechi]

den fetch prints

  unittest (constraint: >=0.12.0-alpha.1 <0.13.0, latest: 0.11.5+4)
  matcher (constraint: >=0.12.0-alpha.0 <0.13.0, latest: 0.11.4+4)
  analyzer (constraint: >=0.25.0-dev.2 <0.26.0, latest: 0.24.0)

but pub upgrade updates different dependencies

Resolving dependencies... (8.4s) 
! analyzer 0.25.0-dev.3 (overridden)
! args 0.13.0 (overridden)
  barback 0.15.2+4
  browser 0.10.0+2
  cli_util 0.0.1+1
> code_transformers 0.2.7+2 (was 0.2.7+1)
  collection 1.1.0
  crypto 0.9.0
  csslib 0.11.0+4
  dart_style 0.1.7
  glob 1.0.4
  grinder 0.7.0-dev.1 from git git@github.com:google/grinder.dart.git at 19506f
  html 0.12.1
  html5lib 0.12.1
  http_parser 0.0.2+6
  http_server 0.9.5+1
> initialize 0.6.0+2 (was 0.6.0+1)
  intl 0.12.2
  linter 0.0.2+1 from git git@github.com:dart-lang/linter.git at 338cd5
  logging 0.9.3
! matcher 0.12.0-alpha.0 (overridden)
  mime 0.9.3
  observe 0.13.0+1
  path 1.3.4
  petitparser 1.3.7
  polymer 0.16.0+7
  polymer_expressions 0.13.1
  pool 1.0.1
  quiver 0.21.3
  quiver_log 1.0.3
> shelf 0.6.1+1 (was 0.5.7)
  shelf_static 0.2.2
  shelf_web_socket 0.0.1+2
  smoke 0.3.2
  source_maps 0.10.0+2
> source_span 1.1.2 (was 1.1.1)
  stack_trace 1.2.4
  string_scanner 0.1.3+1
  template_binding 0.14.0+2
+ test 0.12.0-beta.4
! unittest 0.12.0-beta.4 (overridden)
  utf 0.9.0+2
  watcher 0.9.5
  web_components 0.11.1+1
  when 0.2.0
  which 0.1.3
  yaml 2.1.2
Warning: You are using these overridden dependencies:
! analyzer 0.25.0-dev.3
! args 0.13.0
! matcher 0.12.0-alpha.0
! unittest 0.12.0-beta.4
Downloading unittest 0.12.0-beta.4...
Downloading test 0.12.0-beta.4...
Changed 6 dependencies!