thread 'main' panicked at 'unknown name section chunk type: 7'

[Badel2]

After running cargo web, executing the wasm file results in this panic:

thread 'main' panicked at 'unknown name section chunk type: 7', src/wasm_context.rs:642:41

I fixed this in this commit: Badel2@46b3637

By replacing the panic with an error. Not sure if this has any consequences, but it seems to work.

If you encounter this problem you can use my fork:

cargo install --git https://github.com/Badel2/cargo-web cargo-web

[gabrielpacheco23]

I've encoutered this problem too... But unfortunately your workaround also didn't work.

[shaharyarahmed-bot]

I have also encountered this issue any solutions yet?

[fengli0]

I have also encountered this issue any solutions yet?

[NekoAlosama]

I have also encountered this issue any solutions yet?

anti-similar comment tactic

[jice-nospam]

Same issue with latest 0.6.26 version trying to recompile my project...

[7r3nzy]

I've encountered this issue with rust version > 1.51 <= 1.57. It works for me in 1.47 and 1.51(built successfully, but had runtime errors), not tested any other versions.

[7r3nzy]

this may be related koute/stdweb#411

[sotrh]

This is also an issue for me when working on https://github.com/sotrh/gamepads. I have a backtrace:

RUST_BACKTRACE=1 cargo web start > errors.txt
    Finished dev [unoptimized + debuginfo] target(s) in 0.02s
warning: unused variable: `id`
  --> src/main.rs:37:32
   |
37 |         while let Some(Event { id, event, time}) = context.next_event() {
   |                                ^^ help: try ignoring the field: `id: _`
   |
   = note: `#[warn(unused_variables)]` on by default

warning: unused variable: `event`
  --> src/main.rs:37:36
   |
37 |         while let Some(Event { id, event, time}) = context.next_event() {
   |                                    ^^^^^ help: try ignoring the field: `event: _`

warning: unused variable: `time`
  --> src/main.rs:37:43
   |
37 |         while let Some(Event { id, event, time}) = context.next_event() {
   |                                           ^^^^ help: try ignoring the field: `time: _`

warning: 3 warnings emitted
    Processing "gamepads.wasm"...
thread 'main' panicked at 'unknown name section chunk type: 7', /home/ben/.cargo/registry/src/github.com-1ecc6299db9ec823/cargo-web-0.6.26/src/wasm_context.rs:642:41
stack backtrace:
   0: rust_begin_unwind
             at /rustc/f1edd0429582dd29cccacaf50fd134b05593bd9c/library/std/src/panicking.rs:517:5
   1: std::panicking::begin_panic_fmt
             at /rustc/f1edd0429582dd29cccacaf50fd134b05593bd9c/library/std/src/panicking.rs:460:5
   2: cargo_web::wasm_context::Context::from_module
   3: cargo_web::wasm::process_wasm_file
   4: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
   5: cargo_web::cargo_shim::BuildConfig::build_internal
   6: cargo_web::cargo_shim::BuildConfig::build
   7: cargo_web::build::Project::build_or_check
   8: cargo_web::cmd_start::LastBuild::new
   9: cargo_web::cmd_start::command_start
  10: cargo_web::run
  11: cargo_web::main
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

[renatocassino]

Same problem here :/

$ RUST_BACKTRACE=1 cargo web build --target=wasm32-unknown-unknown
warning: unused manifest key: cargo-web
warning: unused manifest key: default-target
warning: unused manifest key: prepend-js
    Finished dev [unoptimized + debuginfo] target(s) in 0.01s
    Processing "wasm-test.wasm"...
thread 'main' panicked at 'unknown name section chunk type: 7', /home/<user>/.cargo/registry/src/github.com-1ecc6299db9ec823/cargo-web-0.6.26/src/wasm_context.rs:642:41
stack backtrace:
   0: rust_begin_unwind
             at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/std/src/panicking.rs:584:5
   1: core::panicking::panic_fmt
             at /rustc/fe5b13d681f25ee6474be29d748c65adcd91f69e/library/core/src/panicking.rs:143:14
   2: cargo_web::wasm_context::Context::from_module
   3: core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
   4: cargo_web::cargo_shim::BuildConfig::build_internal
   5: cargo_web::cargo_shim::BuildConfig::build
   6: cargo_web::build::Project::build_or_check
   7: cargo_web::cmd_build::command_build_or_check
   8: cargo_web::run
   9: cargo_web::main
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

I'm using in WSL2, is impossible to build a simple script

Someone can help me?

[JasonkayZK]

This issue still remains unsovled...

[shixish]

I'm stuck on this error as well. I don't know what I'm doing. [Doge.jpg]
Encountered this while trying to run https://github.com/rustyscreeps/screeps-starter-rust 🤷

It says this... if it helps any:

    Processing "screeps-starter-rust.wasm"...
thread 'main' panicked at 'unknown name section chunk type: 7', C:\Users\Andrew\.cargo\registry\src\github.com-1ecc6299db9ec823\cargo-web-0.6.26\src\wasm_context.rs:642:41
stack backtrace:
   0:     0x7ff7341cb312 - <unknown>
   1:     0x7ff7341eee5b - <unknown>
   2:     0x7ff7341c2f6a - <unknown>
   3:     0x7ff7341cb05b - <unknown>
   4:     0x7ff7341cde39 - <unknown>
   5:     0x7ff7341cdabb - <unknown>
   6:     0x7ff7341ce6d0 - <unknown>
   7:     0x7ff7341ce45e - <unknown>
   8:     0x7ff7341cc00f - <unknown>
   9:     0x7ff7341ce110 - <unknown>
  10:     0x7ff73420ed25 - <unknown>
  11:     0x7ff733e530b8 - <unknown>
  12:     0x7ff733dea8e4 - <unknown>
  13:     0x7ff733e35843 - <unknown>
  14:     0x7ff733e04deb - <unknown>
  15:     0x7ff733e019d5 - <unknown>
  16:     0x7ff733e4be7a - <unknown>
  17:     0x7ff733e0648f - <unknown>
  18:     0x7ff733d301d3 - <unknown>
  19:     0x7ff733d03af6 - <unknown>
  20:     0x7ff733cf9c76 - <unknown>
  21:     0x7ff733cf9eec - <unknown>
  22:     0x7ff7341bb8be - <unknown>
  23:     0x7ff733d03e4c - <unknown>
  24:     0x7ff7341f6ef4 - <unknown>
  25:     0x7ff820ef55a0 - BaseThreadInitThunk
  26:     0x7ff82246485b - RtlUserThreadStart

[Tom-CSTech]

I can't believe that a core dependency for many apps is just abandoned completely dead like this. It's sad to see.

[oluceps]

Likewise here. Is this project no longer maintained?