1.39 build on arm64 fails: `error[E0460]: found possibly newer version of crate ``unwind`` which ``std`` depends on`

[barracuda156]

This reproducibly fails for me:

--- BUILDING unwind v0.0.0 (88.9% 1r,0w,1b,16c/18t)
> /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/bin/rustc /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/rustc-1.39.0-src/src/libunwind/lib.rs -o output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libunwind.rlib --emit link,dep-info --cfg debug_assertions -O -L output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib --crate-name unwind --crate-type rlib -C metadata=0_0_0 --edition 2018 --extern core=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcore.rlib --extern libc=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/liblibc-0_2_62_Hd.rlib --extern compiler_builtins=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcompiler_builtins-0_1_18_H8c.rlib --extern cfg_if=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcfg_if-0_1_8_H7.rlib > output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libunwind.rlib_dbg.txt
 (88.9% 1r,0w,1b,16c/18t): unwind v0.0.0
warning: due to multiple output types requested, the explicitly specified output file name will be adapted for each output type

Completed unwind v0.0.0
 (94.4% 0r,0w,1b,17c/18t):
--- BUILDING std v0.0.0 (94.4% 1r,0w,0b,17c/18t)
> /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/bin/rustc /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/rustc-1.39.0-src/src/libstd/lib.rs -o output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libstd.rlib --emit link,dep-info --cfg debug_assertions -O -L output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib --cfg feature="std_detect_file_io" --cfg feature="std_detect_dlsym_getauxval" --crate-name std --crate-type rlib -C metadata=0_0_0_H3000000 -l System -l resolv --edition 2018 --extern alloc=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/liballoc.rlib --extern cfg_if=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcfg_if-0_1_8_H7.rlib --extern panic_abort=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libpanic_abort.rlib --extern core=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcore.rlib --extern libc=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/liblibc-0_2_62_Hd.rlib --extern compiler_builtins=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcompiler_builtins-0_1_18_H8c.rlib --extern unwind=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libunwind.rlib --extern hashbrown=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libhashbrown-0_5_0_H97.rlib --extern backtrace_rs=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libbacktrace-0_3_37_H6401e.rlib --extern rustc_asan=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/librustc_asan.rlib --extern rustc_lsan=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/librustc_lsan.rlib --extern rustc_msan=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/librustc_msan.rlib --extern rustc_tsan=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/librustc_tsan.rlib > output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libstd.rlib_dbg.txt
 (94.4% 1r,0w,0b,17c/18t): std v0.0.0
warning: due to multiple output types requested, the explicitly specified output file name will be adapted for each output type

Completed std v0.0.0
 (100.0% 0r,0w,0b,18c/18t):
--- BUILDING cfg-if v0.1.8 (62.5% 1r,0w,2b,5c/8t)
> /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/bin/rustc ../rustc-1.39.0-src/vendor/cfg-if/src/lib.rs -o output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcfg_if-0_1_8.rlib --emit link,dep-info --cfg debug_assertions -O -L output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib --crate-name cfg_if --crate-type rlib -C metadata=0_1_8 -C extra-filename=-0_1_8 > output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcfg_if-0_1_8.rlib_dbg.txt
 (62.5% 1r,0w,2b,5c/8t): cfg-if v0.1.8
warning: due to multiple output types requested, the explicitly specified output file name will be adapted for each output type

Completed cfg-if v0.1.8
 (75.0% 0r,0w,2b,6c/8t):
--- BUILDING unwind v0.0.0 (75.0% 1r,0w,1b,6c/8t)
> /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/bin/rustc /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/rustc-1.39.0-src/src/libunwind/lib.rs -o output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libunwind.rlib --emit link,dep-info --cfg debug_assertions -O -L output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib --crate-name unwind --crate-type rlib -C metadata=0_0_0 --edition 2018 --extern core=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcore.rlib --extern libc=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/liblibc-0_2_62_Hd.rlib --extern compiler_builtins=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcompiler_builtins-0_1_18_H8c.rlib --extern cfg_if=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcfg_if-0_1_8.rlib > output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libunwind.rlib_dbg.txt
 (75.0% 1r,0w,1b,6c/8t): unwind v0.0.0
warning: due to multiple output types requested, the explicitly specified output file name will be adapted for each output type

Completed unwind v0.0.0
 (87.5% 0r,0w,1b,7c/8t):
--- BUILDING panic_unwind v0.0.0 (87.5% 1r,0w,0b,7c/8t)
> /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/bin/rustc /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/rustc-1.39.0-src/src/libpanic_unwind/lib.rs -o output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libpanic_unwind.rlib --emit link,dep-info --cfg debug_assertions -O -L output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib --crate-name panic_unwind --crate-type rlib -C metadata=0_0_0 --edition 2018 --extern alloc=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/liballoc.rlib --extern core=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcore.rlib --extern libc=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/liblibc-0_2_62_Hd.rlib --extern unwind=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libunwind.rlib --extern compiler_builtins=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcompiler_builtins-0_1_18_H8c.rlib --extern cfg_if=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libcfg_if-0_1_8.rlib > output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libpanic_unwind.rlib_dbg.txt
 (87.5% 1r,0w,0b,7c/8t): panic_unwind v0.0.0
warning: due to multiple output types requested, the explicitly specified output file name will be adapted for each output type

Completed panic_unwind v0.0.0
 (100.0% 0r,0w,0b,8c/8t):
--- BUILDING proc_macro v0.0.0 (76.0% 1r,2w,3b,19c/25t)
> /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/bin/rustc /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/rustc-1.39.0-src/src/libproc_macro/lib.rs -o output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libproc_macro.rlib --emit link,dep-info --cfg debug_assertions -O -L output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib --crate-name proc_macro --crate-type rlib -C metadata=0_0_0 --edition 2018 --extern std=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libstd.rlib > output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libproc_macro.rlib_dbg.txt
 (76.0% 1r,2w,3b,19c/25t): proc_macro v0.0.0
error[E0460]: found possibly newer version of crate `unwind` which `std` depends on
  |
  = note: perhaps that crate needs to be recompiled?
  = note: the following crate versions were found:
          crate `unwind`: /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libunwind.rlib
          crate `std`: /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libstd.rlib

Process was terminated with signal 6
FAILING COMMAND: /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/bin/rustc /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/rustc-1.39.0-src/src/libproc_macro/lib.rs -o output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libproc_macro.rlib --emit link,dep-info --cfg debug_assertions -O -L output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib --crate-name proc_macro --crate-type rlib -C metadata=0_0_0 --edition 2018 --extern std=output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libstd.rlib
Env:  OUT_DIR=/opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/build_proc_macro CARGO_MANIFEST_DIR=/opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/rustc-1.39.0-src/src/libproc_macro CARGO_PKG_NAME=proc_macro CARGO_PKG_VERSION=0.0.0 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=0 CARGO_PKG_VERSION_PATCH=0
 (80.0% 0r,2w,3b,20c/25t):
BUILD FAILED
make: *** [output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libstd.rlib] Error 1
make: Leaving directory `/opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc'
Command failed:  cd "/opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c" && /usr/bin/make -j8 -w /usr/bin/make -j1 -C run_rustc all 
Exit code: 2

Any idea what causes this and how to fix it?

[barracuda156]

The same error if I just try to use rustc executable on its own:

% /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/bin/rustc ./hw.rs
error[E0460]: found possibly newer version of crate `unwind` which `std` depends on
  |
  = note: perhaps that crate needs to be recompiled?
  = note: the following crate versions were found:
          crate `unwind`: /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libunwind.rlib
          crate `std`: /opt/local/var/macports/build/mrustc-rust-6ae41f97/work/mrustc-aeb58f3dfa1d302bf255ff537d06de288dc4a92c/run_rustc/output-1.39.0/prefix-s/lib/rustlib/aarch64-apple-darwin/lib/libstd.rlib

zsh: abort       ./hw.rs

[thepowersgang]

Looks like something is broken in the dependency tree for building libpanic_unwind (causing it to rebuild unwind, when it should be using std's)

It's not unlikely that some recent changes to minicargo have caused that, or maybe the run_rustc makefile is broken from the 1.74 upgrade.

[barracuda156]

Could you try locally with rustc 1.39.0, when you get time? I don’t think I hacked anything about unwind in my patches, so presumably it is reproducible.