thread 'main' panicked at 'index out of bounds: the len is 0 but the index is 0', crates/cli-support/src/descriptor.rs:208:15

[robertpauson]

Describe the Bug

trunk build gives off error that was supposed to be fixed. I'm compiling on a Mac. I've tried both versions where people reported it didn't 'yet' happen, as well as the version after it was supposedly fixed. Referring to: https://github.com/rustwasm/wasm-bindgen/issues/2776

Actual Behavior

warning: `eframe_template` (bin "eframe_template") generated 6 warnings (run `cargo fix --bin "eframe_template"` to apply 6 suggestions)
    Finished release [optimized] target(s) in 0.46s
2023-05-20T10:36:58.140267Z  INFO fetching cargo artifacts
2023-05-20T10:36:58.523293Z  INFO processing WASM for eframe_template
2023-05-20T10:36:58.568526Z  INFO calling wasm-bindgen for eframe_template
thread 'main' panicked at 'index out of bounds: the len is 0 but the index is 0', crates/cli-support/src/descriptor.rs:208:15
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
2023-05-20T10:36:58.709588Z ERROR ❌ error

My Cargo.toml (added versions in []):

name = "eframe_template"
version = "0.1.0"
authors = ["Emil Ernerfeldt <[email protected]>"]
edition = "2021"
rust-version = "1.65"
resolver = "2"

[dependencies]

egui.workspace = true ["0.20.1"]
eframe.workspace = true [{ version = "0.20.1", default-features = false, features = [
    "wgpu",
    "persistence"
]}]
egui_extras.workspace = true ["0.20.0"]

chrono.workspace = true ["0.4.22"]
ehttp.workspace = true ["0.2.0"]
ethers.workspace = true ["1.0.1"]
image.workspace = true ["0.24.5"]
regex.workspace = true ["1.7.0"]
serde.workspace = true [{ version = "1", features = ["derive"] }]
serde_json.workspace = true ["1.0.88"]
url.workspace = true ["2.3.1"]
thiserror.workspace = true ["1.0.35"]

[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
tracing-subscriber = "0.3"

[target.'cfg(target_arch = "wasm32")'.dependencies]
console_error_panic_hook = "0.1.6"
tracing-wasm = "0.2"
wasm-bindgen-futures = "0.4"


[profile.release]
opt-level = 2 # fast and small wasm

# Optimize all dependencies even in debug builds:
[profile.dev.package."*"]
opt-level = 2


[patch.crates-io]

# If you want to use the bleeding edge version of egui and eframe:
# egui = { git = "https://github.com/emilk/egui", branch = "master" }
# eframe = { git = "https://github.com/emilk/egui", branch = "master" }

# If you fork https://github.com/emilk/egui you can test with:
# egui = { path = "../egui/crates/egui" }
# eframe = { path = "../egui/crates/eframe" }

Used to compile

[daxpedda]

I did try using the latest trunk and wasm-bindgen and it works just fine.

A couple of suggestions:

• Does cargo update help?
• Which version of trunk and wasm-bindgen are you using?
• Did you check if the wasm-bindgen version of your dependency and binary are the same?

[robertpauson]

• Does cargo update help?

Same thing happens after cargo update

• Which version of trunk and wasm-bindgen are you using?

trunk 0.16.0 wasm-bindgen 0.2.86

• Did you check if the wasm-bindgen version of your dependency and binary are the same?

what do you mean by binary vs dependency?

I also ran cargo install --locked wasm-bindgen-cli but it doesn't change anything

[daxpedda]

cargo install installs "binaries", you can get the wasm-bindgen binary version by entering this into your terminal:

wasm-bindgen -V

The dependency is what you use in your Rust crate. Look into your Cargo.lock file to determine which version of wasm-binden you are using:

[[package]]
name = "wasm-bindgen"
version = "0.2.86"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5bba0e8cb82ba49ff4e229459ff22a191bbe9a1cb3a341610c9c33efc27ddf73"
dependencies = [
 "cfg-if",
 "wasm-bindgen-macro",
]

[robertpauson]

Thanks. There is conflict:

wasm-bindgen -V

~wasm-bindgen -V

wasm-bindgen 0.2.86

The dependency is what you use in your Rust crate. Look into your Cargo.lock file to determine which version of wasm-binden you are using:

[[package]]
name = "wasm-bindgen"
version = "0.2.86"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5bba0e8cb82ba49ff4e229459ff22a191bbe9a1cb3a341610c9c33efc27ddf73"
dependencies = [
 "cfg-if",
 "wasm-bindgen-macro",
]

[[package]]
name = "wasm-bindgen"
version = "0.2.83"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "eaf9f5aceeec8be17c128b2e93e031fb8a4d469bb9c4ae2d7dc1888b26887268"
dependencies = [
 "cfg-if",
 "wasm-bindgen-macro",
]

[robertpauson]

I have changed the version and it works. Thanks for fast response=)