[racket-dev] odd error message in race setup

I compiled Git head a couple of hours ago and in the middle of my race setup run I found these: 

> raco setup: 1 running: readline/readline.scrbl
> raco setup: 1 running: redex/redex.scrbl
> raco setup: 0 running: scribblings/reference/reference.scrbl
> The authenticity of host 'localhost (::1)' can't be established.
> RSA key fingerprint is 8d:f6:8e:2e:51:61:e7:9a:68:9f:d8:1c:34:82:79:e6.
> Are you sure you want to continue connecting (yes/no)? raco setup: 0 running: scribblings/scheme/scheme.scrbl
> raco setup: 0 running: scribblings/scribble/scribble.scrbl
> raco setup: 0 running: graphics/scribblings/graphics.scrbl
> raco setup: 0 running: graphics/scribblings/turtles.scrbl


> raco setup: 1 rendering: plot/scribblings/plot.scrbl
> raco setup: 0 rendering: scribblings/reference/reference.scrbl
> The authenticity of host 'localhost (::1)' can't be established.
> RSA key fingerprint is 8d:f6:8e:2e:51:61:e7:9a:68:9f:d8:1c:34:82:79:e6.
> Are you sure you want to continue connecting (yes/no)? raco setup: 0 rendering: scribblings/scheme/scheme.scrbl
> raco setup: 1 rendering: scribblings/scribble/scribble.scrbl
> raco setup: 0 rendering: graphics/scribblings/graphics.scrbl
> raco setup: 0 rendering: graphics/scribblings/turtles.scrbl
> raco setup: 0 rendering: net/scribblings/net.scrbl
> raco setup: 1 rendering: trace/scribblings/trace.scrbl
> raco setup: 1 rendering: file/scribblings/file.scrbl
> raco setup: 0 rendering: deinprogramm/scribblings/deinprogramm.scrbl


> raco setup: 0 re-rendering: scribblings/reference/reference.scrbl
> raco setup: 1 re-rendering: scribblings/scheme/scheme.scrbl
> raco setup: 1 re-rendering: net/scribblings/net.scrbl
> The authenticity of host 'localhost (::1)' can't be established.
> RSA key fingerprint is 8d:f6:8e:2e:51:61:e7:9a:68:9f:d8:1c:34:82:79:e6.
> Are you sure you want to continue connecting (yes/no)? raco setup: --- installing collections ---
> raco setup: --- post-installing collections ---
> raco setup: post-installing: help
> raco setup: post-installing: mred
> raco setup: post-installing: mzcom


I have never seen this before. Some left-over debugging code? -- Matthias