Starting from jenkins-1.486-55-gb44787d and until jenkins-1.501 (the latest that I could build),
every second CLI command fails with 'java.io.EOFException'.

Here is the sequence of four attempts to run the same test build:
(it can be any other CLI command.)

$ java -jar ./jenkins-cli.jar -s https://jenkins.rd.opentrust.com/ build job-test
$ java -jar ./jenkins-cli.jar -s https://jenkins.rd.opentrust.com/ build job-test
Exception in thread "main" java.io.EOFException
at java.io.DataInputStream.readBoolean(DataInputStream.java:244)
at hudson.cli.Connection.readBoolean(Connection.java:95)
at hudson.cli.CLI.authenticate(CLI.java:604)
at hudson.cli.CLI._main(CLI.java:444)
at hudson.cli.CLI.main(CLI.java:374)
$ java -jar ./jenkins-cli.jar -s https://jenkins.rd.opentrust.com/ build job-test
$ java -jar ./jenkins-cli.jar -s https://jenkins.rd.opentrust.com/ build job-test
Exception in thread "main" java.io.EOFException
at java.io.DataInputStream.readBoolean(DataInputStream.java:244)
at hudson.cli.Connection.readBoolean(Connection.java:95)
at hudson.cli.CLI.authenticate(CLI.java:604)
at hudson.cli.CLI._main(CLI.java:444)
at hudson.cli.CLI.main(CLI.java:374)

It seems that "b44787ddeaf203d26baf456cb12603b6f2ad232a is the first bad commit" .

Kind regards,
Viktor.