Permission denied (os error 13) #39
Description
Hello. Compilation failed while attempting to follow the Build a Deterministic Runtime guide because the container user does not have sufficient permissions in the runtime-dir.
Software versions used
srtool --version
# khassanov @ d25 in ~/Workspace/github.com/paritytech/polkadot-sdk-polkadot-stable2509-2 on git:polkadot-stable2509-2-rc2 x [10:41:50]
$ srtool --version
srtool-cli 0.13.2
# khassanov @ d25 in ~/Workspace/github.com/paritytech/polkadot-sdk-polkadot-stable2509-2 on git:polkadot-stable2509-2-rc2 x [10:41:52]
$ podman --version
podman version 5.4.1
# khassanov @ d25 in ~/Workspace/github.com/paritytech/polkadot-sdk-polkadot-stable2509-2 on git:polkadot-stable2509-2-rc2 x [10:41:57]
$ docker --version
Docker version 29.0.1, build eedd969
# khassanov @ d25 in ~/Workspace/github.com/paritytech/polkadot-sdk-polkadot-stable2509-2 on git:polkadot-stable2509-2-rc2 x [10:41:58]
$ cat /etc/os-release | grep PRETTY_NAME
PRETTY_NAME="Ubuntu 25.04"Failure example
srtool build --app --package parachain-template-runtime --runtime-dir templates/parachain/runtime
# khassanov @ d25 in ~/Workspace/github.com/paritytech/polkadot-sdk-polkadot-stable2509-2 on git:polkadot-stable2509-2-rc2 x [10:42:01]
$ srtool build --app --package parachain-template-runtime --runtime-dir templates/parachain/runtime
Found 1.88.0, we will be using docker.io/paritytech/srtool:1.88.0 for the build
🧰 Substrate Runtime Toolbox - srtool v0.18.3 🧰
- by Chevdor -
info: override toolchain for '/build' set to '1.88.0-x86_64-unknown-linux-gnu'
info: component 'rust-std' for target 'wasm32-unknown-unknown' is up to date
info: component 'rust-src' is up to date
🏗 Building parachain-template-runtime as release using rustc 1.88.0 (6b00bc388 2025-06-23)
⏳ That can take a little while, be patient... subsequent builds may be faster.
Since you have to wait a little, you may want to learn more about Substrate runtimes:
https://docs.substrate.io/learn/architecture/
Updating crates.io index
Downloading crates ...
Downloaded alloy-rlp-derive v0.3.12
Downloaded equivalent v1.0.1
...
Downloaded linux-raw-sys v0.9.4
Downloaded gmp-mpfr-sys v1.6.5
Downloaded verifiable v0.1.0
error: failed to create directory `/build/templates/parachain/runtime/target`
Caused by:
Permission denied (os error 13)Successful run after permissions granted
It works after all permissions to the directory granted for all users.
chmod 777 templates/parachain/runtime
# khassanov @ d25 in ~/Workspace/github.com/paritytech/polkadot-sdk-polkadot-stable2509-2 on git:polkadot-stable2509-2-rc2 x [10:42:27] C:1
$ ls -ld templates/parachain/runtime
drwxrwxr-x 1 khassanov khassanov 60 Nov 18 10:40 templates/parachain/runtime
# khassanov @ d25 in ~/Workspace/github.com/paritytech/polkadot-sdk-polkadot-stable2509-2 on git:polkadot-stable2509-2-rc2 x [10:51:06]
$ chmod 777 templates/parachain/runtime
# khassanov @ d25 in ~/Workspace/github.com/paritytech/polkadot-sdk-polkadot-stable2509-2 on git:polkadot-stable2509-2-rc2 x [10:51:16]
$ ls -ld templates/parachain/runtime
drwxrwxrwx 1 khassanov khassanov 60 Nov 18 10:40 templates/parachain/runtime
# khassanov @ d25 in ~/Workspace/github.com/paritytech/polkadot-sdk-polkadot-stable2509-2 on git:polkadot-stable2509-2-rc2 x [10:51:19]
$ srtool build --app --package parachain-template-runtime --runtime-dir templates/parachain/runtime
Found 1.88.0, we will be using docker.io/paritytech/srtool:1.88.0 for the build
🧰 Substrate Runtime Toolbox - srtool v0.18.3 🧰
- by Chevdor -
info: override toolchain for '/build' set to '1.88.0-x86_64-unknown-linux-gnu'
info: component 'rust-std' for target 'wasm32-unknown-unknown' is up to date
info: component 'rust-src' is up to date
🏗 Building parachain-template-runtime as release using rustc 1.88.0 (6b00bc388 2025-06-23)
⏳ That can take a little while, be patient... subsequent builds may be faster.
Since you have to wait a little, you may want to learn more about Substrate runtimes:
https://docs.substrate.io/learn/architecture/
Updating crates.io index
Downloading crates ...
Downloaded Inflector v0.11.4
Downloaded alloy-rlp-derive v0.3.12
Downloaded fastrlp v0.4.0
...
Compiling cumulus-pallet-xcmp-queue v0.23.0 (/build/cumulus/pallets/xcmp-queue)
Compiling parachains-common v25.0.0 (/build/cumulus/parachains/common)
Compiling polkadot-sdk v2509.0.0 (/build/umbrella)
Finished `release` profile [optimized] target(s) in 2m 36s
✨ Your Substrate WASM Runtime is ready! ✨
✨ WASM : templates/parachain/runtime/target/srtool/release/wbuild/parachain-template-runtime/parachain_template_runtime.compact.wasm
✨ Z_WASM: templates/parachain/runtime/target/srtool/release/wbuild/parachain-template-runtime/parachain_template_runtime.compact.compressed.wasm
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# khassanov @ d25 in ~/Workspace/github.com/paritytech/polkadot-sdk-polkadot-stable2509-2 on git:polkadot-stable2509-2-rc2 x [10:54:12]
$