Pin Cargo to the 2014-10-02 nightly.

[Ms2ger]

Relevant to #3580.

[hoppipolla-critic-bot]

Critic review: https://critic.hoppipolla.co.uk/r/2773

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[jdm]

r+

[metajack]

@bors: retry

[bors-servo]

saw approval from jdm
at Ms2ger@e4eaf88

[bors-servo]

merging Ms2ger/servo/pin-cargo = e4eaf88 into auto

[bors-servo]

Ms2ger/servo/pin-cargo = e4eaf88 merged ok, testing candidate = e6ca42d

[bors-servo]

some tests failed:
failure: http://build.servo.org/builders/linux/builds/144
failure: http://build.servo.org/builders/mac/builds/146

[bors-servo]

saw approval from jdm
at Ms2ger@e4eaf88

[bors-servo]

merging Ms2ger/servo/pin-cargo = e4eaf88 into auto

[bors-servo]

Ms2ger/servo/pin-cargo = e4eaf88 merged ok, testing candidate = 420400d

[bors-servo]

some tests failed:
failure: http://build.servo.org/builders/linux/builds/145
failure: http://build.servo.org/builders/mac/builds/147

[metajack]

r+

[bors-servo]

saw approval from metajack
at Ms2ger@3659fe1

[bors-servo]

merging Ms2ger/servo/pin-cargo = 3659fe1 into auto

[bors-servo]

Ms2ger/servo/pin-cargo = 3659fe1 merged ok, testing candidate = 8de734f

[bors-servo]

all tests pass:
success: http://build.servo.org/builders/linux/builds/146
success: http://build.servo.org/builders/mac/builds/148

[bors-servo]

fast-forwarding master to auto = 8de734f