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relibc compile error: found possibly newer version of crate `compiler_builtins` which `compiler_builtins` depends on

  • I agree that I have searched opened and closed issues to prevent duplicates.

Description

Error when running make prefix during relibc compilation:

error[E0460]: found possibly newer version of crate `compiler_builtins` which `compiler_builtins` depends on

Environment info

  • Operating system: Ubuntu 18.10
  • uname -a: Linux <machine-node-name> 4.18.0-16-generic #17-Ubuntu SMP Fri Feb 8 00:06:57 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
  • rustc -V: rustc 1.32.0-nightly (15d770400 2018-11-06)
  • git rev-parse HEAD: 986aad930f0c7c057481d0ea9128eb5a64df727e

Steps to reproduce

  1. rm -rf prefix/x86_64-unknown-redox/relibc-install or rm -rf prefix
  2. make prefix

Behavior

  • Expected behavior: make prefix builds relibc (without compile errors)
  • Actual behavior: Compilation aborts on a compile error
mkdir -p build
nasm -f bin -o build/bootloader -D ARCH_x86_64 -ibootloader/x86_64/ bootloader/x86_64/disk.asm
rm -rf "/home/niels/Documents/my_sources/rust/redox/redox/prefix/x86_64-unknown-redox/relibc-install"
mkdir -p "/home/niels/Documents/my_sources/rust/redox/redox/prefix/x86_64-unknown-redox/relibc-install"
cd "/home/niels/Documents/my_sources/rust/redox/redox/relibc" && \
export PATH="/home/niels/Documents/my_sources/rust/redox/redox/prefix/x86_64-unknown-redox/gcc-freestanding-install/bin:$PATH" && \
make CARGO=xargo all && \
make CARGO=xargo DESTDIR="/home/niels/Documents/my_sources/rust/redox/redox/prefix/x86_64-unknown-redox/relibc-install/usr" install
make[1]: Entering directory '/home/niels/Documents/my_sources/rust/redox/redox/relibc'
xargo rustc --release "--target=x86_64-unknown-redox" -- 
   Compiling relibc v0.1.0 (/home/niels/Documents/my_sources/rust/redox/redox/relibc)
error[E0460]: found possibly newer version of crate `compiler_builtins` which `compiler_builtins` depends on
  |
  = note: perhaps that crate needs to be recompiled?
  = note: the following crate versions were found:
          crate `compiler_builtins`: /home/niels/Documents/my_sources/rust/redox/redox/relibc/target/x86_64-unknown-redox/release/deps/libcompiler_builtins-0927a6f3dd40654d.rlib
          crate `compiler_builtins`: /home/niels/Documents/my_sources/rust/redox/redox/build/xargo/lib/rustlib/x86_64-unknown-redox/lib/libcompiler_builtins-f9ef2c567ebd3ba5.rlib
          crate `compiler_builtins`: /home/niels/Documents/my_sources/rust/redox/redox/relibc/target/x86_64-unknown-redox/release/deps/libcompiler_builtins-0927a6f3dd40654d.rlib

error: aborting due to previous error

For more information about this error, try `rustc --explain E0460`.
error: Could not compile `relibc`.

To learn more, run the command again with --verbose.
make[1]: *** [Makefile:105: "target/x86_64-unknown-redox"/release/librelibc.a] Error 101
make[1]: Leaving directory '/home/niels/Documents/my_sources/rust/redox/redox/relibc'
make: *** [mk/prefix.mk:88: /home/niels/Documents/my_sources/rust/redox/redox/prefix/x86_64-unknown-redox/relibc-install] Error 2

Running cargo clean in the relibc submodule and then make prefix again seems to solve this.