It seems to have lost the will to live some way into downloading dependencies. This is the example play project.
% sbt package
[info] Loading project definition from /s/playframework/framework/project
[warn] there were 2 deprecation warnings; re-run with -deprecation for details
[warn] one warning found
[info] Set current project to Root (in build file:/s/playframework/framework/)
remote: Counting objects: 652
remote: Compressing objects: 100% (171/171)
Receiving objects: 100% (652/652)
Resolving deltas: 100% (191/191)
Updating references: 100% (1/1)
[warn] adding all dependencies from dependent projects on Play-Java-Ebean (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-Test (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-JDBC (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-Java-JDBC (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-JDBC (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-Java (see TODO in code )
[warn] adding all dependencies from dependent projects on SBT-Plugin (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-Java (see TODO in code )
[warn] adding all dependencies from dependent projects on Filters-Helpers (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-Java (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-Integration-Test (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-Java-JDBC (see TODO in code )
[warn] adding all dependencies from dependent projects on Play (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-JDBC (see TODO in code )
[warn] adding all dependencies from dependent projects on Play (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-Java-JPA (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-Java-JDBC (see TODO in code )
[warn] adding all dependencies from dependent projects on Play (see TODO in code )
[warn] adding all dependencies from dependent projects on Play (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-Java (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-JDBC (see TODO in code )
[warn] adding all dependencies from dependent projects on Play (see TODO in code )
[warn] adding all dependencies from dependent projects on Play (see TODO in code )
[warn] adding all dependencies from dependent projects on Play-Java (see TODO in code )
[warn] adding all dependencies from dependent projects on Play (see TODO in code )
[warn] adding all dependencies from dependent projects on Play (see TODO in code )
[success] Resolved dependency tree in (Anorm): 118 ms
[success] Resolved dependency tree in (Templates): 147 ms
[success] Resolved dependency tree in (Console): 552 ms
[success] Resolved dependency tree in (Play-Iteratees): 409 ms
[success] Resolved dependency tree in (SBT-link): 479 ms
[warn] adding all dependencies from dependent projects on Play (see TODO in code )
[success] Resolved dependency tree in (SBT-Plugin): 242 ms
[success] Resolved dependency tree in (Routes-Compiler): 262 ms
[success] Resolved dependency tree in (Root): 407 ms
[success] Resolved dependency tree in (Templates-Compiler): 142 ms
[success] Resolved dependency tree in (Templates-Compiler): 167 ms
[success] Resolved dependency tree in (Play-Test): 1472 ms
[success] Resolved dependency tree in (Play-Exceptions): 1247 ms
[success] Resolved dependency tree in (Play-JDBC): 1223 ms
[success] Resolved dependency tree in (Play-Java): 1450 ms
[success] Resolved dependency tree in (Play-Java-Ebean): 545 ms
0/1 - 0% - NaN kb/s - total: 0.00 mb00/5 - 0% - 0.00 kb/s - total: 0.00 mb0/24 - 0% - 0.00 kb/s - total: 0.00 mb[success] Resolved dependency tree in (Filters-Helpers): 385 ms
0/1 - 0% - NaN kb/s - total: 0.00 mb[warn] adding all dependencies from dependent projects on Play-Test (see TODO in code )
0/4 - 0% - 0.00 kb/s - total: 0.00 mb0/19 - 0% - 0.00 kb/s - total: 0.00 mb0/24 - 0% - 0.00 kb/s - total: 0.00 mb[warn] adding all dependencies from dependent projects on Play (see TODO in code )
2/5 - 40% - 17.99 kb/s - total: 2.48 mb21/28 - 51% - 53.70 kb/s - total: 5.87 mb17/32 - 30% - 80.73 kb/s - total: 14.80 mb2/5 - 40% - 18.01 kb1/4 - 21% - 12.01 kb/s - total: 3.55 mb2/5 - 49% - 19.21 kb/s - total: 2.48 mb0/25 - 2% - 2.32 kb/s - total: 8.17 mb22/28 - 55% - 50.71 kb/s -24/32 - 62% - 76.75 kb/s - total: 14.80 mb2/4 - 48% - 14.32 kb/s - total: 3.55 mb2/4 - 61% - 18.13 kb/s - total: 3.55 mb26/28 - 83% - 40.67 kb2/3 - 74% - 10.49 kb/s - total: 1.72 mb424/1/1 - 100% - 5.18 kb/s - total: 0.63 mb
26/26/28 - 99% - 37.63 kb/s - total: 5.87244/526/32 - 80% - 74.80 kb/s - total: 14.8428/28 - 100% - 37.00 kb/s - total: 5.87 mb
0/6 - 0% - 0.00 kb/s - total: 0.00 mb4444273/3 - 100% - 10.74 kb/s - total: 1.72 mb
44/229/32 - 83% - 68.43 kb/s - total: 14.844295/5 - 100% - 13.42 kb/s - total: 2.48 mb
24/39 - 42% - 87.32 kb/s - total: 17.63 mb47/52 - 79% - 80.13 kb/s - total: 24.72 mb18/34 - 29% - 73.92 kb/s - total: 15.34 mb2/4 - 71% - 10.334/39 - 77% - 66.56 kb/s - total: 17.63 mb30/32 - 92% - 37.22 kb/s - total: 14.80 mb29/34 - 76% - 65.16 kb/s - total: 15.34 mb59/72 - 55% - 12360/72 - 57% - 122.10 kb/s - total: 45.62 m60/4/4 - 100% - 14.22 kb/s - total: 3.55 mb
37/39 - 94% - 54.24 kb/s - total: 17.63 mb35/42 - 72% - 144.16 kb/s - total: 18.81 mb32/34 - 93% - 51.04 kb/s - total: 15.34 mb67/72 - 71% - 1636/42 - 79% - 142.35 kb/s - total: 18.81 m332/32 - 100% - 30.95 kb/s - total: 14.80 mb1/32 - 100% - 30.95 kb/s - total: 14.80 mb
36/42 - 81% - 141.83 kb/s - total: 18.81 m36/42 - 81% - 141.76 kb/s - total: 18.81 mb[success] Resolved dependency tree in (Play-Java-JDBC): 161 ms
36/42 - 81% - 141.75 kb/s - total: 18.81 mb[success] Resolved dependency tree in (Play): 89 ms
38/39 - 95% - 52.75 kb/s - total: 17.63 mb68/72 - 73% - 104.55 kb/s - total: 45.62 mb[success] Resolved dependency tree in (Play-Java-JPA): 155 ms
336/42 - 82% - 141.61 kb/s - total: 18.81 m36/42 - 82% - 141.74 kb/s - total: 18.81 mb[success] Resolved dependency tree in (Play-Integration-Test): 929 ms
50/52 - 95% - 48.60 kb/s - total: 24.72 mb36/42 - 85% - 138.81 kb/s - total: 18.81 mb1/11 - 9% - 71.16 kb/s - total: 4.61 mb68/72 - 74% - 103.638/38/39 - 96% - 50.40 kb/s - total: 17.6368/33/34 - 100% - 48.96 kb/s - total: 15.3434/34 - 100% - 48.92 kb/s - total: 15.34 mb
50/52338/39 - 97% - 49.64 kb/s - total: 17.633836/11 - 50% - 90.29 kb/s - total: 4.61 m350/1/1 - 100% - 14.48 kb/s - total: 0.10 mb
469/72 - 80% - 92.33 kb/s - total: 45.62 3631/46 - 30% - 179.58 kb/s - total: 32.62 52/52 - 100% - 44.19 kb/s - total: 24.72 mb
31/46 - 30% - 179.67 kb/s - total: 32.62 mb[info] Updating {file:/s/playframework/framework/}SBT-link...
369/72 - 81% - 91.73 kb/s - total: 45.62 mb[info] Done updating.
[info] Updating {file:/s/playframework/framework/}Anorm...
69/72 - 81% - 91.74 kb/s - total: 45.62 mb[info] Resolving org.scala-lang#scala-library;2.10.0 ...
32/46 - 30% - 179.59 kb/s - total: 32.62 mb[info] Done updating.
32/46 - 30% - 179.55 kb/s - total: 32.62 mb[info] Updating {file:/s/playframework/framework/}Console...
[info] Resolving org.scala-lang#scala-library;2.9.2 ...
32/46 - 30% - 179.70 kb/s - total: 32.62 mb[info] Done updating.
10/11 - 84% - 48.33 kb/s - total: 4.61 mb[info] Updating {file:/s/playframework/framework/}Templates...
32/46 - 30% - 179.70 kb/s - total: 32.62 mb[info] Resolving org.scala-lang#scala-library;2.10.0 ...
69/72 - 81% - 91.72 kb/s - total: 45.62 mb[info] Done updating.
[info] Updating {file:/s/playframework/framework/}Play-Exceptions...
32/46 - 30% - 179.63 kb/s - total: 32.62 m369/72 - 81% - 91.72 kb/s - total: 45.62 mb[info] Done updating.
[info] Updating {file:/s/playframework/framework/}Play-Iteratees...
69/72 - 81% - 91.72 kb/s - total: 45.62 mb[info] Resolving org.scala-lang#scala-library;2.10.0 ...
32/46 - 30% - 179.69 kb/s - total: 32.62 mb[info] Done updating.
[info] Updating {file:/s/playframework/framework/}Routes-Compiler...
32/46 - 30% - 179.71 kb/s - total: 32.62 mb[info] Resolving org.scala-lang#scala-library;2.9.2 ...
69/72 - 81% - 91.72 kb/s - total: 45.62 mb[info] Done updating.
[info] Updating {file:/s/playframework/framework/}Root...
32/46 - 30% - 179.71 kb/s - total: 32.62 mb[info] Resolving org.scala-lang#scala-library;2.10.0 ...
32/46 - 30% - 179.76 kb/s - total: 32.62 mb[info] Done updating.
[info] Updating {file:/s/playframework/framework/}Templates-Compiler...
[info] Resolving org.scala-lang#scala-library;2.9.2 ...
32/46 - 30% - 179.78 kb/s - total: 32.62 mb[info] Done updating.
32/46 - 30% - 179.85 kb/s - total: 32.62 mb[info] Updating {file:/s/playframework/framework/}Play...
[info] Resolving play#play-iteratees_2.10;2.0-unknown ...
32/46 - 30% - 179.88 kb/s - total: 32.62 mb[info] Done updating.
[info] Updating {file:/s/playframework/framework/}SBT-Plugin...
[info] Resolving org.scala-sbt#precompiled-2_10_0;0.12.2 ...
10/11 - 84% - 47.91 kb/s - total: 4.61 mb38/39 - 100% - 43.84 kb/s - total: 17.63 mb[info] Done updating.kb/s - total: 32.62 mb
38/39 - 100% - 43.84 kb/s - total: 17.63 mb[info] Compiling 3 Java sources to /s/playframework/framework/src/sbt-link/target/classes...
69/72 - 81% - 91.55 kb/s - total: 45.62 mb32/46 - 31% - 179.05 kb/s - total: 32.62 mb[info] Compiling 5 Scala sources to /s/playframework/framework/src/anorm/target/scala-2.10/classes...
69/72 - 81% - 91.55 kb/s - total: 453641/42 - 98% - 96.10 kb/s - total: 18.81 m39/39 - 100% - 43.69 kb/s - total: 17.63 mb
32/46 - 32% - 176.76 kb/s - total: 32.62 mb[info] Compiling 1 Scala source to /s/playframework/framework/src/templates/target/scala-2.10/classes...
33/46 - 34% - 177.14 kb/s - total: 32.33/46 - 35% - 177.25 kb/s - total: 32.62 33/46 - 35% - 177.39 kb/s - total: 32.62 mb[warn] there were 7 feature warnings; re-run with -feature for details
10/11 - 88% - 45.40 kb/s - total: 4.61 mb[warn] one warning found
369/72 - 82% - 90.76 kb/s - total: 45.62 mb[info] Compiling 2 Java sources to /s/playframework/framework/src/play-exceptions/target/classes...
33/46 - 35% - 177.34 kb/s - total: 32.62 mb[info] Compiling 6 Scala sources to /s/playframework/framework/src/iteratees/target/scala-2.10/classes...
33/46 - 35% - 177.32 kb/s - total: 32.62 m433/46 - 37% - 177.91 kb/s - total: 32.62 333/46 - 37% - 177.86 kb/s - total: 32.62 mb[warn] /s/playframework/framework/src/iteratees/src/main/scala/play/api/libs/iteratee/Enumerator.scala:113: reflective access of structural type member method apply should be enabled
[warn] by making the implicit value language.reflectiveCalls visible.
[warn] This can be achieved by adding the import clause 'import scala.language.reflectiveCalls'
[warn] or by setting the compiler option -language:reflectiveCalls.
[warn] See the Scala docs for value scala.language.reflectiveCalls for a discussion
[warn] why the feature should be explicitly enabled.
[warn] def map[U](f: E => U): Enumerator[U] = parent &> Enumeratee.map[E](f)
[warn] ^
33/46 - 37% - 178.03 kb/s - total: 32.62 mb[warn] /s/playframework/framework/src/iteratees/src/main/scala/play/api/libs/iteratee/Enumerator.scala:115: reflective access of structural type member method apply should be enabled
[warn] by making the implicit value language.reflectiveCalls visible.
[warn] def mapInput[U](f: Input[E] => Input[U]) = parent &> Enumeratee.mapInput[E](f)
[warn] ^
33/46 - 38% - 177.36 kb/s - total: 32.62 mb369/72 - 82% - 90.04 kb/s - total: 45.62 mb[warn] /s/playframework/framework/src/iteratees/src/main/scala/play/api/libs/iteratee/Concurrent.scala:503: trait Hub in object Concurrent is deprecated: use Concurrent.broadcast instead
[warn] def broadcast[E](e: Enumerator[E], interestIsDownToZero: Broadcaster => Unit = _ => ()): (Enumerator[E], Broadcaster) = { lazy val h: Hub[E] = hub(e, () => interestIsDownToZero(h)); (h.getPatchCord(), h) }
[warn] ^
[warn] /s/playframework/framework/src/iteratees/src/main/scala/play/api/libs/iteratee/Concurrent.scala:503: method hub in object Concurrent is deprecated: use Concurrent.broadcast instead
[warn] def broadcast[E](e: Enumerator[E], interestIsDownToZero: Broadcaster => Unit = _ => ()): (Enumerator[E], Broadcaster) = { lazy val h: Hub[E] = hub(e, () => interestIsDownToZero(h)); (h.getPatchCord(), h) }
[warn] ^
[warn] /s/playframework/framework/src/iteratees/src/main/scala/play/api/libs/iteratee/Concurrent.scala:503: trait Hub in object Concurrent is deprecated: use Concurrent.broadcast instead
[warn] def broadcast[E](e: Enumerator[E], interestIsDownToZero: Broadcaster => Unit = _ => ()): (Enumerator[E], Broadcaster) = { lazy val h: Hub[E] = hub(e, () => interestIsDownToZero(h)); (h.getPatchCord(), h) }
[warn] ^
34/46 - 38% - 177.17 kb/s - total: 32.62 m41/44/4 - 100% - 6.17 kb/s - total: 3.55 mb
41/42 - 100% - 91.73 kb/s - total: 18.81 mb[info] Updating {file:/s/playframework/framework/}Play-Java...
[info] Resolving play#play-iteratees_2.10;2.0-unknown ...
69/72 - 82% - 90.01 kb/s - total: 45.62 mb34/46 - 38% - 177.01 kb/s - total: 32.62 mb[info] Done updating.
34/46 - 38% - 176.99 kb/s - total: 32.62 mb10/11 - 91% - 43.59 kb/s - total: 4.61 mb[info] Updating {file:/s/playframework/framework/}Play-Test...
[info] Resolving play#play-iteratees_2.10;2.0-unknown ...
369/72 - 82% - 90.02 kb/s - total: 45.62 mb[info] Done updating.b/s - total: 45.62 mb41/42 - 100% - 91.72 kb/s - total: 18.81 mb
[info] Updating {file:/s/playframework/framework/}Filters-Helpers...
[info] Resolving play#play-iteratees_2.10;2.0-unknown ...
41/42 - 100% - 91.68 kb/s - total: 18.81 mb[info] Done updating./s - total: 32.62 mb
41/42 - 100% - 91.68 kb/s - total: 18.81 mb41/42 - 100% - 91.68 kb/s - total: 18.81 mb[info] Compiling 2 Scala sources to /s/playframework/framework/src/routes-compiler/target/scala-2.9.2/classes...
34/46 - 38% - 176.95 kb/s - total: 32.62 mb42/42 - 100% - 91.68 kb/s - total: 18.81 mb
34/46 - 38% - 176.67 kb/s - total: 32.62 mb[info] Packaging /s/playframework/framework/src/sbt-link/target/sbt-link-2.0-unknown.jar ...
[info] Done packaging.
[info] Packaging /s/playframework/framework/src/templates/target/scala-2.10/templates_2.10-2.0-unknown.jar ...
34/46 - 39% - 176.64 kb/s - total: 32.62 mb[info] Done packaging.
34/46 - 39% - 176.65 kb/s - total: 32.62 mb[info] Packaging /s/playframework/framework/src/play-exceptions/target/play-exceptions-2.0-unknown.jar ...
34/46 - 39% - 176.66 kb/s - total: 32.62 mb[info] Done packaging.
[info] Packaging /s/playframework/framework/target/scala-2.10/root_2.10-2.0-unknown.jar ...
[info] Done packaging.
34/46 - 39% - 176.68 kb/s - total: 32.62 mb[info] Updating {file:/s/playframework/framework/}Play-JDBC...
[info] Resolving play#play-iteratees_2.10;2.0-unknown ...
34/46 - 39% - 176.56 kb/s - total: 32.62 mb[info] Done updating.
[info] Updating {file:/s/playframework/framework/}Play-Integration-Test...
[info] Resolving play#play-test_2.10;2.0-unknown ...
34/46 - 39% - 176.62 kb/s - total: 32.62 mb[info] Done updating.
34/46 - 39% - 176.43 kb/s - total: 32.62 mb[info] Updating {file:/s/playframework/framework/}Play-Java-JDBC...
[info] Resolving play#play-iteratees_2.10;2.0-unknown ...
3410/11 - 91% - 43.31 kb/s - total: 4.61 mb[info] Done updating.
34/46 - 39% - 176.43 kb/s - total: 32.62 mb[info] Updating {file:/s/playframework/framework/}Play-Java-JPA...
[info] Resolving play#play-iteratees_2.10;2.0-unknown ...
34/46 - 39% - 176.33 kb/s - total: 32.62 mb[info] Done updating.
[info] Updating {file:/s/playframework/framework/}Play-Java-Ebean...
[info] Resolving play#play-iteratees_2.10;2.0-unknown ...
34/46 - 39% - 176.36 kb/s - total: 32.62 mb[warn] /s/playframework/framework/src/iteratees/src/main/scala/play/api/libs/iteratee/Enumerator.scala:593: method fromCallback in object Enumerator is deprecated: use Enumerator.generateM instead
[warn] fromCallback(() => {
[warn] ^
[info] Done updating.
10/11 - 92% - 43.26 kb/s - total: 4.61 mb34/46 - 39% - 176.57 kb/s - total: 32.62 m3410/11 - 92% - 43.22 kb/s - total: 4.61 mb[info] Packaging /s/playframework/framework/src/anorm/target/scala-2.10/anorm_2.10-2.0-unknown.jar ...
34/46 - 39% - 176.54 kb/s - total: 32.62 mb[info] Done packaging.
736/46 - 43% - 177.07 kb/s - total: 32.62 36/46 - 44% - 177.72 kb/s - total: 32.62 mb[warn] 6 warnings found
370/72 - 83% - 89.00 kb/s - total: 45.62 mb[info] Packaging /s/playframework/framework/src/iteratees/target/scala-2.10/play-iteratees_2.10-2.0-unknown.jar ...
36/46 - 44% - 177.90 kb/s - total: 32.62 mb[info] Done packaging.
36/46 - 44% - 178.03 kb/s - total: 32.62 m36/46 - 44% - 178.14 kb/s - total: 32.62 mb[info] Packaging /s/playframework/framework/src/routes-compiler/target/scala-2.9.2/routes-compiler_2.9.2-2.0-unknown.jar ...
36/46 - 44% - 178.16 kb/s - total: 32.62 mb[info] Done packaging.
36/46 - 46% - 178.98 kb/s - total: 32.62 mb311/11 - 100% - 41.88 kb/s - total: 4.61 mb
43/46 - 94% - 180.99 kb/s - total: 32.62 mb72/72 - 100% - 88.35 kb/s - total: 45.62 mb
45/46 - 100% - 183.66 kb/s - total: 32.62 mb
...and then never heard from again.
I'm not sure how to make sense of the thread dump.