Android CI fails sporadically during build

[cre4ture]

Android CI is still unstable due to random errors of Text file busy.
Example attachted.
The crate beeing affected seems to be rather random each time.
As I think this is an issue with the build system itself, I don't know how to easily fix this.
From my experience "Text file busy" means that an other process is blocking the file such that it can't be accessed.
Maybe this is a race-condition that happens when the creation of the file is not yet fully finished and its already accessed for execution?

Anyway I suggest to implement a workaround that just retries the build 3 times before stopping.
I can implement this.

[2024-02-20 17:00:18]    Compiling libc v0.2.153
[2024-02-20 17:00:18]    Compiling cfg-if v1.0.0
[2024-02-20 17:00:18]    Compiling typenum v1.15.0
[2024-02-20 17:00:18]    Compiling version_check v0.9.4
[2024-02-20 17:00:18]    Compiling bitflags v1.3.2
[2024-02-20 17:00:18]    Compiling io-lifetimes v1.0.11
[2024-02-20 17:00:18]    Compiling proc-macro2 v1.0.63
[2024-02-20 17:00:18] error: failed to run custom build command for `libc v0.2.153`
[2024-02-20 17:00:18] 
[2024-02-20 17:00:18] Caused by:
[2024-02-20 17:00:18]   could not execute process `/data/data/com.termux/files/home/coreutils/target/debug/build/libc-db86c7903a93619b/build-script-build` (never executed)
[2024-02-20 17:00:18] 
[2024-02-20 17:00:18] Caused by:
[2024-02-20 17:00:18]   Text file busy (os error 26)
[2024-02-20 17:00:18] warning: build failed, waiting for other jobs to finish...

[cre4ture]

I have the feeling that this doesn happen anymore currently.
So the PR stays in draft, because its propably not needed.

[BenWiederhake]

It just happened again: #6015 (comment)

[cre4ture]

@BenWiederhake thanks for reporting. Before merge, I wanted to see a case where my workaround was actually needed and working. Currently, on this branch I had only cases where the build worked the first time.

[cre4ture]

Update: it works. I found now a case where it was happing on this branch, and the automatic retry was helping to make build successful.

[cre4ture]

closing as workaround was merged to main