Docker image build errors

[slax57]

Hi!

Following the answer on issue rusty-horizon/rust-examples#2, I tried to build the docker image provided on this repo.

I faced several build errors, which I'll list below:

#27 11.41 The following packages have unmet dependencies:
#27 11.53  cmake : Depends: libcurl3 (>= 7.16.2) but it is not installable
#27 11.55 E: Unable to correct problems, you have held broken packages.
------
failed to solve with frontend dockerfile.v0: failed to build LLB: executor failed running [/bin/sh -c apt-get update && apt-get install -y git && apt-get -t stretch-backports install -y cmake]: runc did not terminate sucessfully

Caused by:
  the `default-run` manifest key is unstable

Caused by:
  feature `default-run` is required

consider adding `cargo-features = ["default-run"]` to the manifest

I workaround those issues the following way:

-RUN apt-get update && apt-get install -y git && apt-get -t stretch-backports install -y cmake
+RUN apt-get update && apt-get install -y git && apt-get install -y cmake

+RUN rustup install nightly

-RUN cargo install xargo
+RUN cargo +nightly install xargo

With all that fixed, I still get the following error, which seems to be very similar as the one raised in rusty-horizon/rust-examples#2:

#22 84.57    Compiling libc v0.2.46
#22 84.57      Running `rustc --crate-name core /root/.rustup/toolchains/nightly-2019-01-19-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/libcore/lib.rs --color never --crate-type lib --emit=dep-info,link -C opt-level=3 -C metadata=9ef47930db987ddf -C extra-filename=-9ef47930db987ddf --out-dir /tmp/xargo.9k9q5jIiywrA/target/aarch64-horizon-elf/release/deps --target aarch64-horizon-elf -L dependency=/tmp/xargo.9k9q5jIiywrA/target/aarch64-horizon-elf/release/deps -L dependency=/tmp/xargo.9k9q5jIiywrA/target/release/deps --sysroot /root/.xargo -Z force-unstable-if-unmarked`
#22 84.57      Running `rustc --crate-name build_script_build /root/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.46/build.rs --color never --crate-type bin --emit=dep-info,link -C opt-level=3 --cfg 'feature="align"' --cfg 'feature="rustc-dep-of-std"' --cfg 'feature="rustc-std-workspace-core"' -C metadata=7a148dd319e2d3ee -C extra-filename=-7a148dd319e2d3ee --out-dir
/tmp/xargo.9k9q5jIiywrA/target/release/build/libc-7a148dd319e2d3ee -L dependency=/tmp/xargo.9k9q5jIiywrA/target/release/deps --cap-lints allow`
#22 85.01      Running `/tmp/xargo.9k9q5jIiywrA/target/release/build/libc-7a148dd319e2d3ee/build-script-build`
#22 100.4    Compiling rustc-std-workspace-core v1.0.0 (/root/.rustup/toolchains/nightly-2019-01-19-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/tools/rustc-std-workspace-core)
#22 100.4      Running `rustc --crate-name rustc_std_workspace_core /root/.rustup/toolchains/nightly-2019-01-19-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/src/tools/rustc-std-workspace-core/lib.rs --color never --crate-type lib --emit=dep-info,link -C opt-level=3 -C metadata=19334507dbe0cd2c -C extra-filename=-19334507dbe0cd2c --out-dir /tmp/xargo.9k9q5jIiywrA/target/aarch64-horizon-elf/release/deps --target aarch64-horizon-elf -L dependency=/tmp/xargo.9k9q5jIiywrA/target/aarch64-horizon-elf/release/deps -L dependency=/tmp/xargo.9k9q5jIiywrA/target/release/deps --extern core=/tmp/xargo.9k9q5jIiywrA/target/aarch64-horizon-elf/release/deps/libcore-9ef47930db987ddf.rlib --sysroot /root/.xargo -Z force-unstable-if-unmarked`
#22 100.5      Running `rustc --crate-name libc /root/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.46/src/lib.rs --color never --crate-type lib --emit=dep-info,link -C opt-level=3 --cfg 'feature="align"' --cfg 'feature="rustc-dep-of-std"' --cfg 'feature="rustc-std-workspace-core"' -C metadata=44dcceef922a5f36 -C extra-filename=-44dcceef922a5f36 --out-dir /tmp/xargo.9k9q5jIiywrA/target/aarch64-horizon-elf/release/deps --target aarch64-horizon-elf -L dependency=/tmp/xargo.9k9q5jIiywrA/target/aarch64-horizon-elf/release/deps -L dependency=/tmp/xargo.9k9q5jIiywrA/target/release/deps --extern rustc_std_workspace_core=/tmp/xargo.9k9q5jIiywrA/target/aarch64-horizon-elf/release/deps/librustc_std_workspace_core-19334507dbe0cd2c.rlib --cap-lints allow --sysroot /root/.xargo -Z force-unstable-if-unmarked --cfg core_cvoid`
#22 100.8 error[E0412]: cannot find type `Option` in this scope
#22 100.8    --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.46/src/unix/newlib/mod.rs:723:36
#22 100.8     |
#22 100.8 723 |     pub fn pthread_atfork(prepare: Option<unsafe extern fn()>,
#22 100.8     |                                    ^^^^^^ not found in this scope
#22 100.8 help: possible candidates are found in other modules, you can import them into scope
#22 100.8     |
#22 100.8 1   | use core::option::Option;
#22 100.8     |
#22 100.8 1   | use core::prelude::v1::Option;
#22 100.8     |
#22 100.8
#22 100.8 error[E0412]: cannot find type `Option` in this scope
#22 100.8    --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.46/src/unix/newlib/mod.rs:724:35
#22 100.8     |
#22 100.8 724 |                           parent: Option<unsafe extern fn()>,
#22 100.8     |                                   ^^^^^^ not found in this scope
#22 100.8 help: possible candidates are found in other modules, you can import them into scope
#22 100.8     |
#22 100.8 1   | use core::option::Option;
#22 100.8     |
#22 100.8 1   | use core::prelude::v1::Option;
#22 100.8     |
#22 100.8
#22 100.8 error[E0412]: cannot find type `Option` in this scope
#22 100.8    --> /root/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.46/src/unix/newlib/mod.rs:725:34
#22 100.8     |
#22 100.8 725 |                           child: Option<unsafe extern fn()>) -> ::c_int;
#22 100.8     |                                  ^^^^^^ not found in this scope
#22 100.8 help: possible candidates are found in other modules, you can import them into scope
#22 100.8     |
#22 100.8 1   | use core::option::Option;
#22 100.8     |
#22 100.8 1   | use core::prelude::v1::Option;
#22 100.8     |
#22 100.8
#22 100.8 error: aborting due to 3 previous errors
#22 100.8
#22 100.8 For more information about this error, try `rustc --explain E0412`.
#22 100.8 error: Could not compile `libc`.
#22 100.8
#22 100.8 Caused by:
#22 100.8   process didn't exit successfully: `rustc --crate-name libc /root/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.46/src/lib.rs --color never --crate-type lib --emit=dep-info,link -C opt-level=3 --cfg 'feature="align"' --cfg 'feature="rustc-dep-of-std"' --cfg 'feature="rustc-std-workspace-core"' -C metadata=44dcceef922a5f36 -C extra-filename=-44dcceef922a5f36 --out-dir /tmp/xargo.9k9q5jIiywrA/target/aarch64-horizon-elf/release/deps --target aarch64-horizon-elf -L dependency=/tmp/xargo.9k9q5jIiywrA/target/aarch64-horizon-elf/release/deps -L dependency=/tmp/xargo.9k9q5jIiywrA/target/release/deps --extern rustc_std_workspace_core=/tmp/xargo.9k9q5jIiywrA/target/aarch64-horizon-elf/release/deps/librustc_std_workspace_core-19334507dbe0cd2c.rlib --cap-lints allow --sysroot /root/.xargo -Z force-unstable-if-unmarked --cfg core_cvoid` (exit code: 1)
#22 100.8 error: `"cargo" "build" "--release" "--manifest-path" "/tmp/xargo.9k9q5jIiywrA/Cargo.toml" "--target" "aarch64-horizon-elf" "-v" "-p" "libc"` failed with exit code: Some(101)
#22 100.8 note: run with `RUST_BACKTRACE=1` for a backtrace
------
failed to solve with frontend dockerfile.v0: failed to build LLB: executor failed running [/bin/sh -c cd /tmp/sysroot-builder/
&&     xargo build --target aarch64-horizon-elf -vv # rerun]: runc did not terminate sucessfully

I have to admit I don't understand really what I am doing wrong 😬 ...

Any ideas ?

Many thanks in advance.