`-Zbindeps` isn't supported - cargo update works fine with it

[theoparis]

theo@Theos-MacBook-Pro rust % cargo upgrade -i -Z bindeps
error: invalid value 'bindeps' for '-Z <FLAG>'

For more information, try '--help'.

[epage]

That -Z is for our own unstable options.

Someone would need to implement support for -Zbindeps