nightly builds on macOS fails to load some dynamic libraries

[NotAFlyingGoose]

Problem

dynamic library loading fails, similar to #2290

Steps

1. switch to nightly
2. check rustc version
   (see below)

Possible Solution(s)

the error messages talk about a load command being unknown, perhaps there's something to do with the executable in my version of macOS (10.14.6)

Notes

$ rustup default nightly
info: using existing install for 'nightly-x86_64-apple-darwin'
info: default toolchain set to 'nightly-x86_64-apple-darwin'

  nightly-x86_64-apple-darwin unchanged - (error reading rustc version)

$ rustc --version
dyld: Library not loaded: @rpath/librustc_driver-582242ced547d33f.dylib
  Referenced from: /Users/goose/.rustup/toolchains/nightly-x86_64-apple-darwin/bin/rustc
  Reason: no suitable image found.  Did find:
        /Users/goose/.rustup/toolchains/nightly-x86_64-apple-darwin/bin/../lib/librustc_driver-582242ced547d33f.dylib: cannot load 'librustc_driver-582242ced547d33f.dylib' (load command 0x80000034 is unknown)
        /Users/goose/.rustup/toolchains/nightly-x86_64-apple-darwin/bin/../lib/librustc_driver-582242ced547d33f.dylib: stat() failed with errno=1
        /Users/goose/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/librustc_driver-582242ced547d33f.dylib: cannot load 'librustc_driver-582242ced547d33f.dylib' (load command 0x80000034 is unknown)
        /Users/goose/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/librustc_driver-582242ced547d33f.dylib: cannot load 'librustc_driver-582242ced547d33f.dylib' (load command 0x80000034 is unknown)
Abort trap: 6

my stable is at 1.65.0 (897e37553 2022-11-02)

Rustup version

$ rustup --version
rustup 1.25.1 (bb60b1e89 2022-07-12)
info: This is the version for the rustup toolchain manager, not the rustc compiler.
info: The currently active `rustc` version is `(error reading rustc version)`

Installed toolchains

$ rustup show
Default host: x86_64-apple-darwin
rustup home:  /Users/goose/.rustup

installed toolchains
--------------------

stable-x86_64-apple-darwin
nightly-x86_64-apple-darwin (default)

active toolchain
----------------

nightly-x86_64-apple-darwin (default)
(error reading rustc version)

[limitLiu]

Same problem.
My macOS version is 10.14.6, too.

[ehuss]

This should be fixed in the latest nightly. Can you try to update again?

FWIW, this is a duplicate of rust-lang/rust#104570.

[NotAFlyingGoose]

rustup doesn't show any updates for the nightly yet, I'll probably be able to update later.

[NotAFlyingGoose]

After updating my nightly to the latest the error persists

$ rustup update
info: syncing channel updates for 'stable-x86_64-apple-darwin'
info: syncing channel updates for 'nightly-x86_64-apple-darwin'
info: latest update on 2022-11-27, rust version 1.67.0-nightly (80a96467e 2022-11-26)
info: downloading component 'cargo'
  4.6 MiB /   4.6 MiB (100 %) 550.4 KiB/s in  8s ETA:  0s
info: downloading component 'clippy'
  2.0 MiB /   2.0 MiB (100 %) 281.6 KiB/s in  8s ETA:  0s
info: downloading component 'rust-docs'
 19.3 MiB /  19.3 MiB (100 %) 787.2 KiB/s in 21s ETA:  0s 
info: downloading component 'rust-std'
 29.0 MiB /  29.0 MiB (100 %) 944.0 KiB/s in 35s ETA:  0s 
info: downloading component 'rustc'
 55.4 MiB /  55.4 MiB (100 %)   1.1 MiB/s in  1m  8s ETA:  0s 
info: downloading component 'rustfmt'
  2.5 MiB /   2.5 MiB (100 %) 946.2 KiB/s in  2s ETA:  0s
info: removing previous version of component 'cargo'
info: removing previous version of component 'clippy'
info: removing previous version of component 'rust-docs'
info: removing previous version of component 'rust-std'
info: removing previous version of component 'rustc'
info: removing previous version of component 'rustfmt'
info: installing component 'cargo'
  4.6 MiB /   4.6 MiB (100 %)   2.6 MiB/s in  2s ETA:  0s
info: installing component 'clippy'
info: installing component 'rust-docs'
 19.3 MiB /  19.3 MiB (100 %)   1.6 MiB/s in 19s ETA:  0s    
info: installing component 'rust-std'
 29.0 MiB /  29.0 MiB (100 %)   2.8 MiB/s in 10s ETA:  0s
info: installing component 'rustc'
 55.4 MiB /  55.4 MiB (100 %)   2.9 MiB/s in 18s ETA:  0s
info: installing component 'rustfmt'
info: checking for self-updates

  stable-x86_64-apple-darwin unchanged - rustc 1.65.0 (897e37553 2022-11-02)
   nightly-x86_64-apple-darwin updated - (error reading rustc version) (from (error reading rustc version))

info: cleaning up downloads & tmp directories
$ rustup show
Default host: x86_64-apple-darwin
rustup home:  /Users/goose/.rustup

installed toolchains
--------------------

stable-x86_64-apple-darwin
nightly-x86_64-apple-darwin (default)

active toolchain
----------------

nightly-x86_64-apple-darwin (default)
(error reading rustc version)

$ rustc --version
dyld: Library not loaded: @rpath/librustc_driver-582242ced547d33f.dylib
  Referenced from: /Users/goose/.rustup/toolchains/nightly-x86_64-apple-darwin/bin/rustc
  Reason: no suitable image found.  Did find:
        /Users/goose/.rustup/toolchains/nightly-x86_64-apple-darwin/bin/../lib/librustc_driver-582242ced547d33f.dylib: cannot load 'librustc_driver-582242ced547d33f.dylib' (load command 0x80000034 is unknown)
        /Users/goose/.rustup/toolchains/nightly-x86_64-apple-darwin/bin/../lib/librustc_driver-582242ced547d33f.dylib: stat() failed with errno=1
        /Users/goose/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/librustc_driver-582242ced547d33f.dylib: cannot load 'librustc_driver-582242ced547d33f.dylib' (load command 0x80000034 is unknown)
        /Users/goose/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/librustc_driver-582242ced547d33f.dylib: stat() failed with errno=1
Abort trap: 6

if #104570 has been closed then how has this seemingly not been resolved? I think I might be doing something incorrectly in this case.

[ehuss]

You're not doing anything incorrectly. Unfortunately the fix didn't resolve the issue. We'll need to wait for more investigation. I recommend closing this issue and following rust-lang/rust#104570 for updates.

[NotAFlyingGoose]

Follow rust-lang/rust#104570 to see if this has been resolved.