cargo: Failed to mmap

I can’t install anything with cargo.

$ cargo install --verbose rustfmt
    Updating registry `https://github.com/rust-lang/crates.io-index`
error: failed to fetch `https://github.com/rust-lang/crates.io-index`

Caused by:
  [2/-1] Failed to mmap. Could not write data: Invalid argument

or by putting dependency in Cargo.toml

$ cat Cargo.toml
[package]
name = "test"
version = "0.1.0"
authors = ["test"]

[dependencies]
rustfmt = "0.5"
$ cargo build --verbose
    Updating registry `https://github.com/rust-lang/crates.io-index`
error: Unable to update registry https://github.com/rust-lang/crates.io-index

Caused by:
  failed to fetch `https://github.com/rust-lang/crates.io-index`

Caused by:
  [2/-1] Failed to mmap. Could not write data: Invalid argument

$ rustc --version
rustc 1.9.0 (e4e8b6668 2016-05-18)
$ cargo --version
cargo 0.10.0-nightly (10ddd7d 2016-04-08)

I am running up-to-date Ubuntu 16.04 LTS.

About this issue

Original URL
State: closed
Created 8 years ago
Comments: 35 (11 by maintainers)

Links to this issue

rust - Is it possible to install Cargo dependencies in the same directory as my project? - Stack Overflow

Commits related to this issue

fix wsl build https://github.com/rust-lang/cargo/issues/2808 — committed to jjyr/capsule by jjyr 4 years ago
Drop support for arm/v7 on Alpine Some strange issue make so that this arch fails to build on Alpine. To not hinder the 3.0.0 release we drop this arch, and hopefully we can reintroduce it in the fut... — committed to JonasAlfredsson/docker-nginx-certbot by JonasAlfredsson 3 years ago
Add SBOM and use source tarball instead of git See: https://github.com/rust-lang/cargo/issues/2808#issuecomment-229287669 — committed to sudo-bot/docker-rustpython by williamdes a year ago
Stop using git to build the __doc__ dependency Ref: https://github.com/rust-lang/cargo/issues/2808 Reverts: 31e1e7e4ed671da54c8b321d5f238b0a5dc83607 — committed to sudo-bot/docker-rustpython by williamdes a year ago
from https://github.com/rust-lang/cargo/issues/2808 — committed to robermar23/mastodon-bot by robermar23 a year ago

Most upvoted comments

I think I have hit the same issue on OSX while wanting to be clever and reuse cargo registry between builds on a docker:

docker run \
    -v $(pwd)/build/.cargo:/root/.cargo \
    -v $(pwd):/source jimmycuadra/rust:1.15.0 \
    /bin/bash -c "cargo build --release"

    Updating registry `https://github.com/rust-lang/crates.io-index`
warning: spurious network error (2 tries remaining): [2/-1] Failed to mmap. Could not write data: Invalid argument
warning: spurious network error (1 tries remaining): [2/-1] Failed to mmap. Could not write data: Invalid argument
error: failed to fetch `https://github.com/rust-lang/crates.io-index`

Nercury on Feb 14, 2017

Just have met the same bug in WSL ubuntu-20.

A hint for who has the same issue:

Using local docker volume to map .cargo won’t trigger this.

docker run ... -v cargo-cache:/root/.cargo

The .cargo will be cached between different containers as expected.

jjyr on Jun 17, 2020

Hi @williamdes thank you. Yes this works ))

magicse on Feb 25, 2023

You should try the workaround I used on my docker image for armv6/armv7 See: https://github.com/rust-lang/cargo/issues/6513#issuecomment-1440029221

ENV CARGO_NET_GIT_FETCH_WITH_CLI=true

Please let us know if works for you

williamdes on Feb 26, 2023

@jml Sorry, no. My project is very small so this is minor for me.

Nercury on Mar 3, 2017