build directory empty with rust plugin

[Mark Shuttleworth]

Using the rust plugin and snapcraft 2.24 the build directory was empty. 'cd parts/foo/build; cp -ar ../src/*' fixed the issue manually.

[Sergio Schvezov (sergiusens)]

I am not seeing this issue. Is this the same yaml as for rust revision.

sergiusens@snapcraft:~/snapcraft/integration_tests/snaps/simple-rust-with-revision$ ls
Cargo.toml snapcraft.yaml src
sergiusens@snapcraft:~/snapcraft/integration_tests/snaps/simple-rust-with-revision$ snapcraft build
"grade" property not specified: defaulting to "stable"
Preparing to pull simple-rust
Pulling simple-rust
Downloading 'rustup.sh'[===========================================================================] 100%
/home/sergiusens/snapcraft/integration_tests/snaps/simple-rust-with-revision/parts/simple-rust/rust/rustup.sh --prefix=/home/sergiusens/snapcraft/integration_tests/snaps/simple-rust-with-revision/parts/simple-rust/rust --disable-sudo --save --revision=1.13.0
rustup: gpg available. signatures will be verified
rustup: downloading manifest for '1.13.0'
rustup: downloading toolchain for '1.13.0'
gpg: assuming signed data in '/home/sergiusens/.rustup.sh/dl/a48639c801ec5abc20d9/rust-1.13.0-x86_64-unknown-linux-gnu.tar.gz'
gpg: Signature made Tue 08 Nov 2016 05:30:31 PM UTC using RSA key ID 7B3B09DC
gpg: Good signature from "Rust Language (Tag and Release Signing Key) <email address hidden>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg: There is no indication that the signature belongs to the owner.
Primary key fingerprint: 108F 6620 5EAE B0AA A8DD 5E1C 85AB 96E6 FA1B E5FE
     Subkey fingerprint: C134 66B7 E169 A085 1886 3216 5CB4 A934 7B3B 09DC
rustup: installing toolchain for '1.13.0'
rustup: extracting installer
install: creating uninstall script at /home/sergiusens/snapcraft/integration_tests/snaps/simple-rust-with-revision/parts/simple-rust/rust/lib/rustlib/uninstall.sh
install: installing component 'rustc'
install: installing component 'rust-std-x86_64-unknown-linux-gnu'
install: installing component 'rust-docs'
install: installing component 'cargo'
install: WARNING: failed to run ldconfig. this may happen when not installing as root. run with --verbose to see the error

    Rust is ready to roll.

/home/sergiusens/snapcraft/integration_tests/snaps/simple-rust-with-revision/parts/simple-rust/rust/bin/cargo fetch
    Updating registry `https://github.com/rust-lang/crates.io-index`
Preparing to build simple-rust
Building simple-rust
/home/sergiusens/snapcraft/integration_tests/snaps/simple-rust-with-revision/parts/simple-rust/rust/bin/cargo install -j4 --root /home/sergiusens/snapcraft/integration_tests/snaps/simple-rust-with-revision/parts/simple-rust/install
    Updating registry `https://github.com/rust-lang/crates.io-index`
   Compiling log v0.3.6
   Compiling simple-rust v0.1.0 (file:///home/sergiusens/snapcraft/integration_tests/snaps/simple-rust-with-revision/parts/simple-rust/build)
    Finished release [optimized] target(s) in 1.13 secs
  Installing /home/sergiusens/snapcraft/integration_tests/snaps/simple-rust-with-revision/parts/simple-rust/install/bin/simple-rust
sergiusens@snapcraft:~/snapcraft/integration_tests/snaps/simple-rust-with-revision$ ls parts/simple-rust/build/
Cargo.lock Cargo.toml src target
sergiusens@snapcraft:~/snapcraft/integration_tests/snaps/simple-rust-with-revisio...

[Domas Monkus (tasdomas)]

I see this behavior with snapcraft 2.24 running this snapcraft.yaml: https://github.com/tasdomas/ripgrep-snap

```
➜ ripgrep-snap % snapcraft build
"grade" property not specified: defaulting to "stable"
Preparing to pull rg
Pulling rg
Cloning into '/home/d/src/snappy/ripgrep-snap/parts/rg/src'...
remote: Counting objects: 2688, done.
remote: Compressing objects: 100% (159/159), done.
remote: Total 2688 (delta 85), reused 0 (delta 0), pack-reused 2528
Receiving objects: 100% (2688/2688), 1.07 MiB | 1.72 MiB/s, done.
Resolving deltas: 100% (1669/1669), done.
Checking connectivity... done.
Downloading 'rustup.sh'[====================================================================================================================================================================================================================================================] 100%
/home/d/src/snappy/ripgrep-snap/parts/rg/rust/rustup.sh --prefix=/home/d/src/snappy/ripgrep-snap/parts/rg/rust --disable-sudo --save
rustup: gpg available. signatures will be verified
rustup: downloading manifest for 'stable'
rustup: downloading toolchain for 'stable'
gpg: assuming signed data in '/home/d/.rustup.sh/dl/b58947592f101b4e9d44/rust-1.14.0-x86_64-unknown-linux-gnu.tar.gz'
gpg: Signature made 2016 m. gruodžio 21 d. 17:46:12 EET using RSA key ID 7B3B09DC
gpg: Good signature from "Rust Language (Tag and Release Signing Key) <email address hidden>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg: There is no indication that the signature belongs to the owner.
Primary key fingerprint: 108F 6620 5EAE B0AA A8DD 5E1C 85AB 96E6 FA1B E5FE
     Subkey fingerprint: C134 66B7 E169 A085 1886 3216 5CB4 A934 7B3B 09DC
rustup: installing toolchain for 'stable'
rustup: extracting installer
install: creating uninstall script at /home/d/src/snappy/ripgrep-snap/parts/rg/rust/lib/rustlib/uninstall.sh
install: installing component 'rustc'
install: installing component 'rust-std-x86_64-unknown-linux-gnu'
install: installing component 'rust-docs'
install: installing component 'cargo'
install: WARNING: failed to run ldconfig. this may happen when not installing as root. run with --verbose to see the error

    Rust is ready to roll.

/home/d/src/snappy/ripgrep-snap/parts/rg/rust/bin/cargo fetch
error: could not find `Cargo.toml` in `/home/d/src/snappy/ripgrep-snap/parts/rg/build` or any parent directory
Command '['/bin/sh', '/tmp/tmpaj00v_gp', '/home/d/src/snappy/ripgrep-snap/parts/rg/rust/bin/ca
```

[Chris MacNaughton (chris.macnaughton)]

I Can replicate this issue when doing `snapcraft build` but not when doing `snapcraft cleanbuild` with the project at https://github.com/jwilm/alacritty

[Alan Pope 🍺🐧🐱 🦄 (popey)]

I have the same issue (build dir empty) both doing snapcraft on my laptop and using cleanbuild.

http://paste.ubuntu.com/23776829/ - yaml
http://paste.ubuntu.com/23776838/ - output

"error: could not find `Cargo.toml` in `/root/parts/titun/build` or any parent directory"

[Leo Arias (elopio)]

The issue for Cargo.toml not found is https://bugs.launchpad.net/snapcraft/+bug/1654764

It has a fix ready to land.

[Leo Arias (elopio)]

Alright, I think I understand now! I think this is the same as bug #1654764.

Mark, can you confirm that your Cargo.toml file is not on the same directory where you are running the snapcraft command?

[Mark Shuttleworth (sabdfl)]

I can't confirm that, sorry, nuked the snap directory after I saw
someone smarter than me making good progress :)