failed to set permissions on non-existing rustup-init

[kornelski]

Verification

• I searched for recent similar issues at https://github.com/rust-lang/rustup/issues?q=is%3Aissue and found no duplicates.
• I am on the latest version of Rustup according to https://github.com/rust-lang/rustup/tags and am still able to reproduce my issue.

Problem

I wanted to try out the new dev version, but the older version failed self-update:

$ RUSTUP_UPDATE_ROOT=https://dev-static.rust-lang.org/rustup rustup update
info: syncing channel updates for 'stable-aarch64-apple-darwin'
info: syncing channel updates for 'nightly-aarch64-apple-darwin'
info: checking for self-update
info: downloading self-update
error: failed to set permissions for '/Users/me/.cargo/bin/rustup-init'

Caused by:
    No such file or directory (os error 2)

$ RUSTUP_UPDATE_ROOT=https://dev-static.rust-lang.org/rustup rustup --version
rustup 1.28.2 (77863418e 2025-04-13)

I have ~/.cargo/bin/rustup, but not rustup-init.

Steps

RUSTUP_UPDATE_ROOT=https://dev-static.rust-lang.org/rustup rustup update

Rustup version

rustup 1.28.2 (77863418e 2025-04-13)

Installed toolchains

Default host: aarch64-apple-darwin
rustup home:  /Users/me/.rustup

installed toolchains
--------------------
stable-aarch64-apple-darwin
nightly-aarch64-apple-darwin (active, default)
nightly-2023-06-14-aarch64-apple-darwin
nightly-2024-06-24-aarch64-apple-darwin
nightly-2025-02-06-aarch64-apple-darwin
1.68.0-aarch64-apple-darwin
1.70.0-aarch64-apple-darwin
1.71.0-aarch64-apple-darwin
1.73.0-aarch64-apple-darwin
1.75.0-aarch64-apple-darwin
1.76.0-aarch64-apple-darwin
1.77.0-aarch64-apple-darwin
1.83.0-aarch64-apple-darwin
stage1
stage2
stage3

active toolchain
----------------
name: nightly-aarch64-apple-darwin
active because: it's the default toolchain
installed targets:
  aarch64-apple-darwin
  aarch64-apple-ios
  thumbv7em-none-eabihf
  wasm32-unknown-unknown
  x86_64-apple-darwin
  x86_64-unknown-linux-musl

OS version

macOS 15.7.3 (24G419)

[rami3l]

@kornelski That file exists, but only as a part of self-update:

rustup/src/cli/self_update.rs

Line 1270 in 6077296

let setup_path = cargo_home.join(format!("bin{MAIN_SEPARATOR}rustup-init{EXE_SUFFIX}"));

rustup/src/cli/self_update.rs

Lines 1323 to 1324 in 6077296

	// Mark as executable
	utils::make_executable(&setup_path)?;

What is special about your setup? (Folder permissions?) I cannot reproduce this either on my Mac or using the official Docker image.

> docker run --rm -it rust:alpine sh
/ # rustup --version
rustup 1.27.1 (54dd3d00f 2024-04-24)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active `rustc` version is `rustc 1.81.0 (eeb90cda1 2024-09-04)`
/ # which rustc
/usr/local/cargo/bin/rustc
/ # ls /usr/local/cargo/bin
cargo          cargo-fmt      clippy-driver  rust-analyzer  rust-gdbgui    rustc          rustfmt
cargo-clippy   cargo-miri     rls            rust-gdb       rust-lldb      rustdoc        rustup
/ # RUSTUP_UPDATE_ROOT=https://dev-static.rust-lang.org/rustup rustup update
info: no updatable toolchains installed
info: checking for self-update
info: downloading self-update
info: cleaning up downloads & tmp directories
/ # rustup --version
rustup 1.29.0 (55e46a33f 2025-12-11)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: the currently active `rustc` version is `rustc 1.81.0 (eeb90cda1 2024-09-04)`