running "./x.py test" after "./x.py build" build fails

[tshepang]

Here is the relevant part...

...
Testing rustc_macros stage1 (x86_64-unknown-linux-gnu -> x86_64-unknown-linux-gnu)                                                                                                                                                                                               [0/45477]
    Finished release [optimized] target(s) in 0.10s                                                                                                                                                                                                                                      
     Running build/x86_64-unknown-linux-gnu/stage1-rustc/release/deps/rustc_macros-9c38a09c1d63337a

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out

   Doc-tests rustc_macros
error[E0460]: found possibly newer version of crate `std` which `synstructure` depends on
 --> /home/tshepang/rust/rustc/src/librustc_macros/src/lib.rs:8:5
  |
8 | use synstructure::decl_derive;
  |     ^^^^^^^^^^^^
  |
  = note: perhaps that crate needs to be recompiled?
  = note: the following crate versions were found:
          crate `std`: /home/tshepang/rust/rustc/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-94a3d4bb5e32a9d0.rlib
          crate `std`: /home/tshepang/rust/rustc/build/x86_64-unknown-linux-gnu/stage1/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-94a3d4bb5e32a9d0.so
          crate `synstructure`: /home/tshepang/rust/rustc/build/x86_64-unknown-linux-gnu/stage1-rustc/release/deps/libsynstructure-154d40b508cd900a.rlib

error: aborting due to previous error

error: test failed, to rerun pass '--doc'


command did not execute successfully: "/home/tshepang/rust/rustc/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "test" "--target" "x86_64-unknown-linux-gnu" "-j" "8" "--release" "--features" "" "--manifest-path" "/home/tshepang/rust/rustc/src/rustc/Cargo.toml" "-p" "rustc_macros"
 "--" "--quiet"
expected success, got: exit code: 1


failed to run: /home/tshepang/rust/rustc/build/bootstrap/debug/bootstrap test
Build completed unsuccessfully in 0:16:29

Workaround is cleaning the build dir and re-running...

./x.py clean && ./x.py test

[ehuss]

I believe this is #59105. Just to be clear, did you update your git repository at some point before building? Doing a clean checkout with a clean build directory should not hit this by just running those two commands in succession.

When you see this error, you can work around it by deleting the files:

rm -rf build/*/{stage1-rustc,stage1-codegen}/release

[tshepang]

Yes, it happened after I updated the repo

[petrochenkov]

I believe this is #59105.

Looks the same, but I regularly observe this without using incremental compilation.

[tshepang]

Oh, am also not using incremental compilation

[ehuss]

The issue title is misleading. There is no relation to incremental. It's been reported a number of times, I just linked to that one since it has the most recent information. I'm not sure if it is ok for me to edit or close other people's issues?

We have a fix queued up that I hope will make it during the next release cycle.

[tshepang]

Thanks @ehuss