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I am encountering cargo crashing with SIGILL on 32-bit PowerPC 7447A after installing with rustup:
Program received signal SIGILL, Illegal instruction.
0x20d89334 in RAND_poll ()
(gdb) bt
#0 0x20d89334 in RAND_poll ()
#1 0x20d887dc in ssleay_rand_bytes ()
#2 0x20c6e5fc in SSL_CTX_new ()
#3 0x20b42e64 in git_openssl_stream_global_init ()
#4 0x20b291d4 in init_common ()
#5 0x20b29388 in init_once ()
#6 0x20707cdc in __GI___pthread_once (once_control=0x20fe78e8 <_once_init>, init_routine=0x20b29324 <init_once>) at ../nptl/sysdeps/unix/sysv/linux/powerpc/pthread_once.c:86
#7 0x20b29414 in git_libgit2_init ()
#8 0x20b25e1c in std::sync::once::Once::call_once::_$u7b$$u7b$closure$u7d$$u7d$::h4f3f0378b6841f4d ()
#9 0x20df95e4 in std::sync::once::{{impl}}::call_inner () at /buildslave/rust-buildbot/slave/beta-dist-rustc-cross-rustbuild-linux/build/src/libstd/sync/once.rs:288
#10 0x20b25fa0 in libgit2_sys::init::h9ec74b5dead701aa ()
#11 0x20b19840 in git2::config::Config::open_default::h2c6ef11c5f7ed621 ()
#12 0x209841bc in cargo::ops::registry::http_proxy::h8d5082d31cf4d553 ()
#13 0x20984348 in cargo::ops::registry::http_proxy_exists::hd3c3ce97150bd2ac ()
#14 0x2081e254 in cargo::execute::hde538bc4de650fee ()
#15 0x20814dc8 in cargo::call_main_without_stdin::hba58ee9cd44dd247 ()
#16 0x2081de04 in cargo::main::h4a870b5478195f89 ()
#17 0x20e05f30 in std::panicking::try::do_call<fn(),()> () at /buildslave/rust-buildbot/slave/beta-dist-rustc-cross-rustbuild-linux/build/src/libstd/panicking.rs:460
#18 0x20e0f058 in panic_unwind::__rust_maybe_catch_panic () at /buildslave/rust-buildbot/slave/beta-dist-rustc-cross-rustbuild-linux/build/src/libpanic_unwind/lib.rs:98
#19 0x20e06ad8 in try<(),fn()> () at /buildslave/rust-buildbot/slave/beta-dist-rustc-cross-rustbuild-linux/build/src/libstd/panicking.rs:436
#20 catch_unwind<fn(),()> () at /buildslave/rust-buildbot/slave/beta-dist-rustc-cross-rustbuild-linux/build/src/libstd/panic.rs:361
#21 std::rt::lang_start () at /buildslave/rust-buildbot/slave/beta-dist-rustc-cross-rustbuild-linux/build/src/libstd/rt.rs:57
#22 0x20862910 in main ()
This occurs after a SIGILL inside OPENSSL_crypto207_probe(), which appears deliberate as that function is probing CPU capabilities. The OPENSSL_crypto207_probe() handles the SIGILL it causes, but RAND_poll() appears to be using an unsupported instruction which causes cargo to crash.
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