Hello,
Kubuntu 14.04 x64
lazarus svn r45996
fpc svn r28280

command line is:
./lazbuild --ws=qt --pcp=~/.lazarus --build-all --quiet --skip-dependencies --build-ide=
error is:
/opt/lazarus/components/jcf2/Process/Align/AlignBase.pas(58,37) Hint: (5024) Parameter "pt" not used
/opt/laz
Compiling package jcfidelazarus 2.0: terminated
TLazPackageGraph.CompileRequiredPackages ERROR="Exit code 256" ERROR: BuildLazarusIDE: Compile AutoInstall Packages failed.

2.after error re-enter command line and this time error result is:

(3104) Compiling /opt/lazarus/components/jcf2/Process/Align/AlignComment.pas (3104) Compiling /opt/lazarus/components/jcf2/Process/Align/AlignField.pas (3104) Compiling /opt/lazarus/components
Compiling package jcfidelazarus 2.0: terminated
TLazPackageGraph.CompileRequiredPackages ERROR="Exit code 256" ERROR: BuildLazarusIDE: Compile AutoInstall Packages failed.

3. re-enter command line, and error result is:

(3104) Compiling
/opt/lazarus/components/jcf2/Process/Spacing/NoSpaceAfter.pas /opt/lazarus/components/jcf2/Process/Spacing/NoSpaceAfter.pas(119,36) Compiling package jcfidelazarus 2.0: terminated
TLazPackageGraph.CompileRequiredPackages ERROR="Exit code 256" ERROR: BuildLazarusIDE: Compile AutoInstall Packages failed.

Exit Code 256 sounds like a compiler bug.

Mattias

I checked all lazbuild result and I saw this lines

........
home/lazarus/components/rx/rxdbgrid.pas(83,1) Fatal: (10026) There were 3 errors compiling module, stopping
Fatal: (1018) Compilation aborted
Error: /usr/bin/ppcx64 returned an error exitcode
Compiling package rxnew 2.6.5.152: stopped with exit code 256 (3104) Compiling
/opt/lazarus/components/jcf2/Process/Spacing/SingleSpaceBefore.pas .......

rxdbgrid.pas has a create error (this comes my added codes, not important) bug is :
Compiling package rxnew 2.6.5.152: stopped with exit code 256

lazbuild NOT stop, continue to work, maybe parallel compilation need check flag

Mattias Gaertner wrote

Exit Code 256 sounds like a compiler bug. Mattias