Compilation fails on 32-bit architectures: LLVM ERROR: out of memory

[vt-alt]

Compile fails on 32-bit architectures such as x86 (i586) and armv7hf:

   Compiling rustic-rs v0.6.1 (/usr/src/RPM/BUILD/rustic-0.6.1)
LLVM ERROR: out of memory
Allocation failed
error: could not compile `rustic-rs` (bin "rustic")

Caused by:
  process didn't exit successfully: `rustc --crate-name rustic --edition=2021 src/bin/rustic.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C opt-level=3 -C panic=abort -C lto=fat -C codegen-units=1 --cfg 'feature="default"' -C metadata=ec8c948345e3b89b -C extra-filename=-ec8c948345e3b89b --out-dir /usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps -L dependency=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps --extern abscissa_core=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libabscissa_core-c475e661bccb7d88.rlib --extern anyhow=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libanyhow-dac24142f176942a.rlib --extern bytesize=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libbytesize-8badc08db7ed5508.rlib --extern chrono=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libchrono-fb26853bfb257b29.rlib --extern clap=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libclap-a03042d3b4cf6e39.rlib --extern clap_complete=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libclap_complete-525a70d30545bc39.rlib --extern comfy_table=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libcomfy_table-bf5b2de0f4420a97.rlib --extern dialoguer=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libdialoguer-b1fa0c1b4024acb2.rlib --extern directories=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libdirectories-d4555e7a0dba7870.rlib --extern gethostname=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libgethostname-d848d8e9badbe779.rlib --extern humantime=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libhumantime-6725c88195997e90.rlib --extern indicatif=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libindicatif-8f13853dab470f52.rlib --extern itertools=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libitertools-d64a5b2d1f6da20e.rlib --extern libc=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/liblibc-f5407182451b27b1.rlib --extern log=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/liblog-837b53e3e59a782c.rlib --extern merge=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libmerge-c79aac8b94535288.rlib --extern rhai=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/librhai-eb56db5a98385034.rlib --extern rustic_rs=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/librustic_rs-4673c60c6fb1e0d6.rlib --extern rustic_core=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/librustic_core-242d45e83801dac4.rlib --extern self_update=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libself_update-f70866e3a62851f5.rlib --extern semver=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libsemver-c5aacf3f2e48816e.rlib --extern serde=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libserde-acd8e412a546ad74.rlib --extern serde_json=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libserde_json-77dc393250b6dd95.rlib --extern serde_with=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libserde_with-d95a7272730af8cf.rlib --extern simplelog=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libsimplelog-df966b3283b5d093.rlib --extern thiserror=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libthiserror-dbb947920d68e2ae.rlib -g -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/ring-efcf54ff0ce9a4a4/out -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/sha2-asm-1514893a37c5f54d/out -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/sha2-asm-1514893a37c5f54d/out -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/zstd-sys-416d2f59d561adad/out` (signal: 6, SIGABRT: process abort signal)
error: Bad exit status from /usr/src/tmp/rpm-tmp.12861 (%build)

[aawsome]

Thanks for opening this issue!
Looking at the error message, this looks more like you try to compile on a machine with too less memory.

Did you try to cross-compile on a powerful machine to your targets?
Note that armv7 for Raspberry Pi is included in the nightly builds: https://github.com/rustic-rs/nightly
If you need it,we can try to add the i586-unknown-linux-gnu target as well (not guaranteed, however, that it will work).

[vt-alt]

We build from sources and natively for ALT Linux so I don't even tried to cross-compile. Some other packages I build with cargo-rust compile successfully on 32-bit architectures. I noticed a difference from them is that rustic have long rustc step at the end (before error) taking 2-3 minutes.

There is (temporary) full build log (you may notice timestamps) https://git.altlinux.org/tasks/339191/build/100/i586/log (final step taking 3 minutes)
https://git.altlinux.org/tasks/339191/build/100/armh/log (it taking 7 minutes)
Quote from i586/log:

[00:00:51]    Compiling rustic-rs v0.6.1 (/usr/src/RPM/BUILD/rustic-0.6.1)
[00:00:51]      Running `rustc --crate-name rustic_rs --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C panic=abort -C linker-plugin-lto -C codegen-units=1 --cfg 'feature="default"' -C metadata=4673c60c6fb1e0d6 -C extra-filename=-4673c60c6fb1e0d6 --out-dir /usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps -L dependency=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps --extern abscissa_core=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libabscissa_core-c475e661bccb7d88.rmeta --extern anyhow=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libanyhow-dac24142f176942a.rmeta --extern bytesize=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libbytesize-8badc08db7ed5508.rmeta --extern chrono=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libchrono-fb26853bfb257b29.rmeta --extern clap=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libclap-a03042d3b4cf6e39.rmeta --extern clap_complete=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libclap_complete-525a70d30545bc39.rmeta --extern comfy_table=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libcomfy_table-bf5b2de0f4420a97.rmeta --extern dialoguer=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libdialoguer-b1fa0c1b4024acb2.rmeta --extern directories=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libdirectories-d4555e7a0dba7870.rmeta --extern gethostname=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libgethostname-d848d8e9badbe779.rmeta --extern humantime=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libhumantime-6725c88195997e90.rmeta --extern indicatif=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libindicatif-8f13853dab470f52.rmeta --extern itertools=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libitertools-d64a5b2d1f6da20e.rmeta --extern libc=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/liblibc-f5407182451b27b1.rmeta --extern log=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/liblog-837b53e3e59a782c.rmeta --extern merge=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libmerge-c79aac8b94535288.rmeta --extern rhai=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/librhai-eb56db5a98385034.rmeta --extern rustic_core=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/librustic_core-242d45e83801dac4.rmeta --extern self_update=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libself_update-f70866e3a62851f5.rmeta --extern semver=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libsemver-c5aacf3f2e48816e.rmeta --extern serde=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libserde-acd8e412a546ad74.rmeta --extern serde_json=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libserde_json-77dc393250b6dd95.rmeta --extern serde_with=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libserde_with-d95a7272730af8cf.rmeta --extern simplelog=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libsimplelog-df966b3283b5d093.rmeta --extern thiserror=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libthiserror-dbb947920d68e2ae.rmeta -g -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/ring-efcf54ff0ce9a4a4/out -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/sha2-asm-1514893a37c5f54d/out -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/sha2-asm-1514893a37c5f54d/out -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/zstd-sys-416d2f59d561adad/out`
[00:02:16]      Running `rustc --crate-name rustic --edition=2021 src/bin/rustic.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type bin --emit=dep-info,link -C opt-level=3 -C panic=abort -C lto=fat -C codegen-units=1 --cfg 'feature="default"' -C metadata=ec8c948345e3b89b -C extra-filename=-ec8c948345e3b89b --out-dir /usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps -L dependency=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps --extern abscissa_core=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libabscissa_core-c475e661bccb7d88.rlib --extern anyhow=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libanyhow-dac24142f176942a.rlib --extern bytesize=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libbytesize-8badc08db7ed5508.rlib --extern chrono=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libchrono-fb26853bfb257b29.rlib --extern clap=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libclap-a03042d3b4cf6e39.rlib --extern clap_complete=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libclap_complete-525a70d30545bc39.rlib --extern comfy_table=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libcomfy_table-bf5b2de0f4420a97.rlib --extern dialoguer=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libdialoguer-b1fa0c1b4024acb2.rlib --extern directories=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libdirectories-d4555e7a0dba7870.rlib --extern gethostname=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libgethostname-d848d8e9badbe779.rlib --extern humantime=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libhumantime-6725c88195997e90.rlib --extern indicatif=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libindicatif-8f13853dab470f52.rlib --extern itertools=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libitertools-d64a5b2d1f6da20e.rlib --extern libc=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/liblibc-f5407182451b27b1.rlib --extern log=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/liblog-837b53e3e59a782c.rlib --extern merge=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libmerge-c79aac8b94535288.rlib --extern rhai=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/librhai-eb56db5a98385034.rlib --extern rustic_rs=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/librustic_rs-4673c60c6fb1e0d6.rlib --extern rustic_core=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/librustic_core-242d45e83801dac4.rlib --extern self_update=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libself_update-f70866e3a62851f5.rlib --extern semver=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libsemver-c5aacf3f2e48816e.rlib --extern serde=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libserde-acd8e412a546ad74.rlib --extern serde_json=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libserde_json-77dc393250b6dd95.rlib --extern serde_with=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libserde_with-d95a7272730af8cf.rlib --extern simplelog=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libsimplelog-df966b3283b5d093.rlib --extern thiserror=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/deps/libthiserror-dbb947920d68e2ae.rlib -g -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/ring-efcf54ff0ce9a4a4/out -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/sha2-asm-1514893a37c5f54d/out -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/sha2-asm-1514893a37c5f54d/out -L native=/usr/src/RPM/BUILD/rustic-0.6.1/target/release/build/zstd-sys-416d2f59d561adad/out`
[00:05:49] LLVM ERROR: out of memory
[00:05:49] Allocation failed
[00:05:49] error: could not compile `rustic-rs` (bin "rustic")

Maybe it's possible to split this step into smaller ones?

[aawsome]

Ah - you could try to remove

opt-level = 3
lto = "fat"
codegen-units = 1

from [profile.release] in Cargo.toml.

These options enable heavy code optimization which maybe fails on your build machine...

[vt-alt]

Thanks. I'm reading https://nnethercote.github.io/perf-book/build-configuration.html and planned to experiment with these too.

[vt-alt]

OK, (If I'm not mistaken) in my tests, either one lto = "thin" (or lto = false) or codegen-units = 16 is enough for compile to finish (tested on i586). Perhaps, I will add both. Thanks for the suggestions!

[aawsome]

Note that as an alternative, you could also use a more powerful machine and cross-compile to the desired target.

[vt-alt]

We cannot use cross-compile, since we only build natively for packages (neither our packaging system have cross-comilation infrastructure), but maybe this will help someone else. 🙏

[vt-alt]

JFYI Since 0.7.0 lto = "thin" is not enough anymore, but lto = false does it.

[simonsan]

Yeah, it's probably related to OpenDAL which is quite a big library to pull in. But with it comes also a lot of opportunity, so it's worth it.