What is RUST_BACKTRACE supposed to tell me?
问题 My program is panicking so I followed its advice to run RUST_BACKTRACE=1 and I get this (just a little snippet). 1: 0x800c05b5 - std::sys::imp::backtrace::tracing::imp::write::hf33ae72d0baa11ed at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:42 2: 0x800c22ed - std::panicking::default_hook::{{closure}}::h59672b733cc6a455 at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/panicking.rs:351 If the program