linking issue on trusty with and latest nightly

[debris]

linking of application using heapsize and built with latest nightly fails on ubuntu trusty

example:

https://github.com/debris/heapsize_issue

travis build matrix:

https://travis-ci.org/debris/heapsize_issue

[jdm]

error: linking with `cc` failed: exit code: 1

note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/home/travis/rust/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/home/travis/build/debris/heapsize_issue/target/debug/app.0.o" "-o" "/home/travis/build/debris/heapsize_issue/target/debug/app" "-Wl,--gc-sections" "-pie" "-nodefaultlibs" "-L" "/home/travis/build/debris/heapsize_issue/target/debug" "-L" "/home/travis/build/debris/heapsize_issue/target/debug/deps" "-L" "/home/travis/rust/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "-Wl,-Bdynamic" "/home/travis/build/debris/heapsize_issue/target/debug/libheapsize_issue.rlib" "/home/travis/build/debris/heapsize_issue/target/debug/deps/libheapsize-a00ec68b9e8bd80c.rlib" "/home/travis/rust/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-fd663c41.rlib" "/home/travis/rust/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcollections-fd663c41.rlib" "/home/travis/rust/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_unicode-fd663c41.rlib" "/home/travis/rust/lib/rustlib/x86_64-unknown-linux-gnu/lib/librand-fd663c41.rlib" "/home/travis/rust/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-fd663c41.rlib" "/home/travis/rust/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc_jemalloc-fd663c41.rlib" "/home/travis/rust/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-fd663c41.rlib" "/home/travis/rust/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-fd663c41.rlib" "-l" "dl" "-l" "pthread" "-l" "gcc_s" "-l" "pthread" "-l" "c" "-l" "m" "-l" "rt" "-l" "compiler-rt"

note: /home/travis/build/debris/heapsize_issue/target/debug/deps/libheapsize-a00ec68b9e8bd80c.rlib(heapsize-a00ec68b9e8bd80c.0.o): In function `heapsize::heap_size_of':

/home/travis/.cargo/registry/src/gb.xjqchip.workers.dev-88ac128001ac3a9a/heapsize-0.3.2/src/lib.rs:45: undefined reference to `je_malloc_usable_size'

collect2: error: ld returned 1 exit status

@larsbergstrom is this related to other issues we've seen recently?

[SimonSapin]

I suspect rust-lang/rust@e3b414d "std: Stop prefixing jemalloc symbols"

[NikVolf]

https://play.rust-lang.org/?gist=f603691b16c6adaffbcb&version=nightly

[NikVolf]

#44