[BUG] cargo version > 1.76 results in build errors when risc0 deps are specified as git dependencies in Cargo.toml

[SchmErik]

Bug Report

When using risc0 crates as git dependencies (meaning git = is used in the Cargo.toml instead of version =), compiling risc0-zkvm crate results in the following error when running cargo build on a risc zero project:

error: invalid inline table
expected `}`
 --> ../../../../../../../home/ubuntu/.cargo/git/checkouts/risc0-7d6ab9951628e5b1/ecb7a53/templates/rust-starter/host/Cargo.toml:8:16
  |
8 | risc0-zkvm = { {{ risc0_zkvm }} }
  |                ^
  |
error: invalid inline table
expected `}`
 --> ../../../../../../../home/ubuntu/.cargo/git/checkouts/risc0-7d6ab9951628e5b1/ecb7a53/templates/rust-starter/methods/Cargo.toml:7:17
  |
7 | risc0-build = { {{ risc0_build }} }
  |                 ^
  |
error: invalid inline table
expected `}`
 --> ../../../../../../../home/ubuntu/.cargo/git/checkouts/risc0-7d6ab9951628e5b1/ecb7a53/templates/rust-starter/methods/guest/Cargo.toml:2:9
  |
2 | name = {{ guest_package_name }}
  |         ^
  |

What appears to be happening is that the risc0 rust-starter template is getting compiled. I found that removing the templates directory from the dependency makes this error message disappear.

A few solutions off the top of my head:

1. get rid of cargo-generate
2. move the template to a separate repo
3. figure out a way to suppress compilation of the template directory. I tried to exclude this in the workspace's Cargo.toml but this had no effect.

Steps to Reproduce

1. create a project, use git = for risc0 dependencies
2. run cargo build. Be sure to run cargo update to ensure that the deps are updated (helpful in certain situations where cargo does not pick up the newest changes pushed to a repo).
3. error is displayed

Expected behavior

Error should not be displayed.

Your Environment

• risc0-zkvm version: 1.0.0-rc.4
• Rust version: host side = 1.77, 1.78
• Platform/OS: mac and linux

[linear]

ZKVM-434 [BUG] cargo version > 1.76 results in build errors when risc0 deps are specified as git dependencies in `Cargo.toml`