Investigate getrandom support

[guybedford]

Apparently RUSTFLAGS=--cfg getrandom_backend="wasm_js" might no longer be working properly, which would be worth looking into.

[seongs1024]

It is related this:

[custom build]    Compiling parking_lot v0.12.4
[custom build]
[custom build] error: The wasm32-unknown-unknown targets are not supported by default; you may need to enable the "wasm_js" configuration flag. Note that enabling the `wasm_js` feature flag alone is insufficient. For more information see: https://docs.rs/getrandom/0.3.3/#webassembly-support
[custom build]    --> /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/backends.rs:168:9
[custom build]     |
[custom build] 168 | /         compile_error!(concat!(
[custom build] 169 | |             "The wasm32-unknown-unknown targets are not supported by default; \
[custom build] 170 | |             you may need to enable the \"wasm_js\" configuration flag. Note \
[custom build] 171 | |             that enabling the `wasm_js` feature flag alone is insufficient. \
[custom build] 172 | |             For more information see: \
[custom build] 173 | |             https://docs.rs/getrandom/", env!("CARGO_PKG_VERSION"), "/#webassembly-support"
[custom build] 174 | |         ));
[custom build]     | |__________^
[custom build]
[custom build]
[custom build] error[E0425]: cannot find function `fill_inner` in module `backends`
[custom build]   --> /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/lib.rs:99:19
[custom build]    |
[custom build] 99 |         backends::fill_inner(dest)?;
[custom build]    |                   ^^^^^^^^^^ not found in `backends`
[custom build]
[custom build] error[E0425]: cannot find function `inner_u32` in module `backends`
[custom build]    --> /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/lib.rs:128:15
[custom build]     |
[custom build] 128 |     backends::inner_u32()
[custom build]     |               ^^^^^^^^^ not found in `backends`
[custom build]     |
[custom build] help: consider importing this function
[custom build]     |
[custom build] 33  + use crate::util::inner_u32;
[custom build]     |
[custom build] help: if you import `inner_u32`, refer to it directly
[custom build]     |
[custom build] 128 -     backends::inner_u32()
[custom build] 128 +     inner_u32()
[custom build]     |
[custom build]
[custom build] error[E0425]: cannot find function `inner_u64` in module `backends`
[custom build]    --> /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/lib.rs:142:15
[custom build]     |
[custom build] 142 |     backends::inner_u64()
[custom build]     |               ^^^^^^^^^ not found in `backends`
[custom build]     |
[custom build] help: consider importing this function
[custom build]     |
[custom build] 33  + use crate::util::inner_u64;
[custom build]     |
[custom build] help: if you import `inner_u64`, refer to it directly
[custom build]     |
[custom build] 142 -     backends::inner_u64()
[custom build] 142 +     inner_u64()
[custom build]     |
[custom build]
[custom build]
[custom build]    Compiling icu_collections v2.0.0
[custom build]
[custom build] For more information about this error, try `rustc --explain E0425`.
[custom build]
[custom build] error: could not compile `getrandom` (lib) due to 4 previous errors
[custom build] warning: build failed, waiting for other jobs to finish...
[custom build]
[custom build] Error: Compiling your crate to WebAssembly failed
[custom build]
[custom build] Caused by:
[custom build]     failed to execute `cargo build`: exited with exit status: 101
[custom build]       full command: cd "/Users/Documents/zeus" && "cargo" "build" "--lib" "--release" "--target" "wasm32-unknown-unknown"
[custom build]
✘ [ERROR] Error: Command failed with exit code 1: cargo install worker-build && worker-build --release

      Updating crates.io index
       Ignored package `worker-build v0.1.10` is already installed, use --force to override
  [INFO]: 🎯  Checking for the Wasm target...
  Using global wasm-bindgen
  [INFO]: ⬇️  Installing wasm-bindgen...
  [INFO]: 🌀  Compiling to Wasm...
     Compiling tinystr v0.8.1
     Compiling potential_utf v0.1.3
     Compiling zerocopy v0.8.27
     Compiling inout v0.1.4
     Compiling toml_edit v0.22.27
     Compiling ahash v0.8.12
     Compiling phf_codegen v0.10.0
     Compiling getrandom v0.3.3
     Compiling pest_meta v2.8.2
     Compiling parking_lot v0.12.4
  error: The wasm32-unknown-unknown targets are not supported by default; you may need to enable the
  "wasm_js" configuration flag. Note that enabling the `wasm_js` feature flag alone is insufficient.
  For more information see: https://docs.rs/getrandom/0.3.3/#webassembly-support
     -->
  /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/backends.rs:168:9
      |
  168 | /         compile_error!(concat!(
  169 | |             "The wasm32-unknown-unknown targets are not supported by default; \
  170 | |             you may need to enable the \"wasm_js\" configuration flag. Note \
  171 | |             that enabling the `wasm_js` feature flag alone is insufficient. \
  172 | |             For more information see: \
  173 | |             https://docs.rs/getrandom/", env!("CARGO_PKG_VERSION"),
  "/#webassembly-support"
  174 | |         ));
      | |__________^

  error[E0425]: cannot find function `fill_inner` in module `backends`
    -->
  /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/lib.rs:99:19
     |
  99 |         backends::fill_inner(dest)?;
     |                   ^^^^^^^^^^ not found in `backends`

  error[E0425]: cannot find function `inner_u32` in module `backends`
     -->
  /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/lib.rs:128:15
      |
  128 |     backends::inner_u32()
      |               ^^^^^^^^^ not found in `backends`
      |
  help: consider importing this function
      |
  33  + use crate::util::inner_u32;
      |
  help: if you import `inner_u32`, refer to it directly
      |
  128 -     backends::inner_u32()
  128 +     inner_u32()
      |

  error[E0425]: cannot find function `inner_u64` in module `backends`
     -->
  /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/lib.rs:142:15
      |
  142 |     backends::inner_u64()
      |               ^^^^^^^^^ not found in `backends`
      |
  help: consider importing this function
      |
  33  + use crate::util::inner_u64;
      |
  help: if you import `inner_u64`, refer to it directly
      |
  142 -     backends::inner_u64()
  142 +     inner_u64()
      |

     Compiling icu_collections v2.0.0
  For more information about this error, try `rustc --explain E0425`.
  error: could not compile `getrandom` (lib) due to 4 previous errors
  warning: build failed, waiting for other jobs to finish...
  Error: Compiling your crate to WebAssembly failed

  Caused by:
      failed to execute `cargo build`: exited with exit status: 101
        full command: cd "/Users/Documents/zeus" && "cargo" "build" "--lib" "--release"
  "--target" "wasm32-unknown-unknown"
      at makeError
  (/Users/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:125277:18)
      at handlePromise
  (/Users/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:125755:29)
      at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
      at async runCustomBuild
  (/Users/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:125955:7)
      at async getEntry
  (/Users/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:147502:3)
      at async resolveConfig
  (/Users/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:225423:17)
      at async #updateConfig
  (/Users/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:225663:68)
      at async setupDevEnv
  (/Users/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:249173:3)
      at async startDev
  (/Users/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:249129:7)
      at async Object.handler
  (/Users/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:224531:29) {
    shortMessage: 'Command failed with exit code 1: cargo install worker-build && worker-build
  --release',
    command: 'cargo install worker-build && worker-build --release',
    escapedCommand: 'cargo install worker-build "&&" worker-build --release',
    exitCode: 1,
    signal: undefined,
    signalDescription: undefined,
    stdout: '',
    stderr: '    Updating crates.io index\n' +
      '     Ignored package `worker-build v0.1.10` is already installed, use --force to override\n'
  +
      '[INFO]: 🎯  Checking for the Wasm target...\n' +
      'Using global wasm-bindgen\n' +
      '[INFO]: ⬇️  Installing wasm-bindgen...\n' +
      '[INFO]: 🌀  Compiling to Wasm...\n' +
      '   Compiling tinystr v0.8.1\n' +
      '   Compiling potential_utf v0.1.3\n' +
      '   Compiling zerocopy v0.8.27\n' +
      '   Compiling inout v0.1.4\n' +
      '   Compiling toml_edit v0.22.27\n' +
      '   Compiling ahash v0.8.12\n' +
      '   Compiling phf_codegen v0.10.0\n' +
      '   Compiling getrandom v0.3.3\n' +
      '   Compiling pest_meta v2.8.2\n' +
      '   Compiling parking_lot v0.12.4\n' +
      'error: The wasm32-unknown-unknown targets are not supported by default; you may need to
  enable the "wasm_js" configuration flag. Note that enabling the `wasm_js` feature flag alone is
  insufficient. For more information see: https://docs.rs/getrandom/0.3.3/#webassembly-support\n' +
      '   -->
  /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/backends.rs:168:9\n'
  +
      '    |\n' +
      '168 | /         compile_error!(concat!(\n' +
      '169 | |             "The wasm32-unknown-unknown targets are not supported by default; \\\n' +
      '170 | |             you may need to enable the \\"wasm_js\\" configuration flag. Note \\\n' +
      '171 | |             that enabling the `wasm_js` feature flag alone is insufficient. \\\n' +
      '172 | |             For more information see: \\\n' +
      '173 | |             https://docs.rs/getrandom/", env!("CARGO_PKG_VERSION"),
  "/#webassembly-support"\n' +
      '174 | |         ));\n' +
      '    | |__________^\n' +
      '\n' +
      'error[E0425]: cannot find function `fill_inner` in module `backends`\n' +
      '  -->
  /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/lib.rs:99:19\n'
  +
      '   |\n' +
      '99 |         backends::fill_inner(dest)?;\n' +
      '   |                   ^^^^^^^^^^ not found in `backends`\n' +
      '\n' +
      'error[E0425]: cannot find function `inner_u32` in module `backends`\n' +
      '   -->
  /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/lib.rs:128:15\n'
  +
      '    |\n' +
      '128 |     backends::inner_u32()\n' +
      '    |               ^^^^^^^^^ not found in `backends`\n' +
      '    |\n' +
      'help: consider importing this function\n' +
      '    |\n' +
      '33  + use crate::util::inner_u32;\n' +
      '    |\n' +
      'help: if you import `inner_u32`, refer to it directly\n' +
      '    |\n' +
      '128 -     backends::inner_u32()\n' +
      '128 +     inner_u32()\n' +
      '    |\n' +
      '\n' +
      'error[E0425]: cannot find function `inner_u64` in module `backends`\n' +
      '   -->
  /Users/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/getrandom-0.3.3/src/lib.rs:142:15\n'
  +
      '    |\n' +
      '142 |     backends::inner_u64()\n' +
      '    |               ^^^^^^^^^ not found in `backends`\n' +
      '    |\n' +
      'help: consider importing this function\n' +
      '    |\n' +
      '33  + use crate::util::inner_u64;\n' +
      '    |\n' +
      'help: if you import `inner_u64`, refer to it directly\n' +
      '    |\n' +
      '142 -     backends::inner_u64()\n' +
      '142 +     inner_u64()\n' +
      '    |\n' +
      '\n' +
      '   Compiling icu_collections v2.0.0\n' +
      'For more information about this error, try `rustc --explain E0425`.\n' +
      'error: could not compile `getrandom` (lib) due to 4 previous errors\n' +
      'warning: build failed, waiting for other jobs to finish...\n' +
      'Error: Compiling your crate to WebAssembly failed\n' +
      '\n' +
      'Caused by:\n' +
      '    failed to execute `cargo build`: exited with exit status: 101\n' +
      '      full command: cd "/Users/Documents/zeus" && "cargo" "build" "--lib" "--release"
  "--target" "wasm32-unknown-unknown"',
    failed: true,
    timedOut: false,
    isCanceled: false,
    killed: false
  }



✘ [ERROR] Running custom build `cargo install worker-build && worker-build --release` failed. There are likely more logs from your build command above.


🪵  Logs were written to "/Users/Library/Preferences/.wrangler/logs/wrangler-2025-09-29_09-03-12_562.log"

[seongs1024]

following the instruction of getrandom

Adding those cannot solve it...

// .cargo/config.toml

[target.wasm32-unknown-unknown]
rustflags = ["--cfg", "getrandom_backend=\"wasm_js\""]

// Cargo.toml

getrandom = { version = "0.3", features = ["wasm_js"] }