nightly cargo dyn linking to openssl fails on os x

[paulsmith]

system: OS X El Capitan 10.11.6

I installed rustup via https://www.rustup.rs/ choosing x86_64-apple-darwin and nightly. Installation succeeded, but then executing cargo failed with the following:

$ cargo
dyld: Library not loaded: /usr/local/opt/openssl/lib/libssl.1.0.0.dylib
  Referenced from: /Users/moof/.multirust/toolchains/nightly-x86_64-apple-darwin/bin/cargo
  Reason: image not found

Missing dyn lib: /usr/local/opt/openssl/lib/libssl.1.0.0.dylib

output of otool -L:

$ otool -L /Users/moof/.multirust/toolchains/nightly-x86_64-apple-darwin/bin/cargo
/Users/moof/.multirust/toolchains/nightly-x86_64-apple-darwin/bin/cargo:
	/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)
	/System/Library/Frameworks/Security.framework/Versions/A/Security (compatibility version 1.0.0, current version 57031.20.26)
	/System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 1153.18.0)
	/usr/lib/libcurl.4.dylib (compatibility version 7.0.0, current version 8.0.0)
	/usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.5)
	/usr/local/opt/openssl/lib/libssl.1.0.0.dylib (compatibility version 1.0.0, current version 1.0.0)
	/usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib (compatibility version 1.0.0, current version 1.0.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1213.0.0)

Discussion in #rust-beginners pointed out that /usr/local/opt/openssl is a symlink into /usr/local/Cellar, indicating that nightly cargo may have recently (inadvertently?) created a dependency on Homebrew.

[causal-agent]

For comparison, output of otool -L on stable Cargo:

/Users/curtis/.multirust/toolchains/stable-x86_64-apple-darwin/bin/cargo:
    /usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)
    /System/Library/Frameworks/Security.framework/Versions/A/Security (compatibility version 1.0.0, current version 57031.20.26)
    /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 1153.18.0)
    /usr/lib/libcurl.4.dylib (compatibility version 7.0.0, current version 8.0.0)
    /usr/lib/libz.1.dylib (compatibility version 1.0.0, current version 1.2.5)
    /usr/lib/libssl.0.9.8.dylib (compatibility version 0.9.8, current version 0.9.8)
    /usr/lib/libcrypto.0.9.8.dylib (compatibility version 0.9.8, current version 0.9.8)
    /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1213.0.0)

[alexcrichton]

Ah yes this happened recently due to upgrading to openssl-sys 0.9. I need to modify the builders of the OSX nightlies to prefer a static linking of OpenSSL than a dynamic.

[remram44]

Nightly 2016-11-25 works, thanks!