[INFO] updating cached repository Yamakaky/rvpn
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Yamakaky/rvpn
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Yamakaky/rvpn" "work/ex/beta-1.38-1/sources/1.37.0/gh/Yamakaky/rvpn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Yamakaky/rvpn'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Yamakaky/rvpn" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Yamakaky/rvpn"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Yamakaky/rvpn'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5baa44e978b4acfa65280faab552f488221f88cb
[INFO] sha for GitHub repo Yamakaky/rvpn: 5baa44e978b4acfa65280faab552f488221f88cb
[INFO] validating manifest of Yamakaky/rvpn on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Yamakaky/rvpn on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Yamakaky/rvpn
[INFO] finished frobbing Yamakaky/rvpn
[INFO] frobbed toml for Yamakaky/rvpn written to work/ex/beta-1.38-1/sources/1.37.0/gh/Yamakaky/rvpn/Cargo.toml
[INFO] started frobbing Yamakaky/rvpn
[INFO] finished frobbing Yamakaky/rvpn
[INFO] frobbed toml for Yamakaky/rvpn written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Yamakaky/rvpn/Cargo.toml
[INFO] crate Yamakaky/rvpn already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Yamakaky/rvpn against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Yamakaky/rvpn:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] d2d844467edfcc9adacebe60bbdcf6a07ce00b23bed48a78dd5c0c6b93b612ce
[INFO] running `"docker" "start" "-a" "d2d844467edfcc9adacebe60bbdcf6a07ce00b23bed48a78dd5c0c6b93b612ce"`
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling net2 v0.2.26
[INFO] [stderr]    Compiling futures v0.1.6
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]    Compiling ioctl v0.3.3
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling error-chain v0.7.1
[INFO] [stderr]    Compiling mio v0.6.1
[INFO] [stderr]    Compiling tokio-core v0.1.1
[INFO] [stderr]    Compiling tun v0.1.0 (git://github.com/Yamakaky/tun-rs.git#44eca9ce)
[INFO] [stderr]    Compiling rvpn v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `tokio_core::io::Io`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use tokio_core::io::Io;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio_core::reactor`
[INFO] [stderr]  --> src/lib.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use tokio_core::reactor;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/lib.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | / error_chain! {
[INFO] [stderr] 13 | |     links {
[INFO] [stderr] 14 | |         Tun(tun::Error, tun::ErrorKind);
[INFO] [stderr] 15 | |     }
[INFO] [stderr] ...  |
[INFO] [stderr] 18 | |     }
[INFO] [stderr] 19 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(deprecated)] on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `futures::Stream`
[INFO] [stderr]   --> src/lib.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use futures::Stream;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.server.cpa8b8o1-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33" "/opt/crater/target/debug/deps/server-06345f74ff6c2d33.2hoduo28b2w5bjs5.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/librvpn-0fa24a83548eb339.rlib" "/opt/crater/target/debug/deps/libtun-e2a03b83f0caa5d7.rlib" "/opt/crater/target/debug/deps/libioctl-2d681b59e3a763e4.rlib" "/opt/crater/target/debug/deps/libbitflags-05fa20c47058c1db.rlib" "/opt/crater/target/debug/deps/libtokio_core-5e38de5ea9309401.rlib" "/opt/crater/target/debug/deps/libscoped_tls-95084f4484ab1532.rlib" "/opt/crater/target/debug/deps/libmio-af127facadda9722.rlib" "/opt/crater/target/debug/deps/libnix-a284346a4be8db93.rlib" "/opt/crater/target/debug/deps/libvoid-03072202629d0c80.rlib" "/opt/crater/target/debug/deps/libbitflags-9f030c7d282c894d.rlib" "/opt/crater/target/debug/deps/libslab-4e7b24a66e4d7090.rlib" "/opt/crater/target/debug/deps/libnet2-00b9ae72b2644690.rlib" "/opt/crater/target/debug/deps/liblazycell-421d4d8ba2cfc917.rlib" "/opt/crater/target/debug/deps/liberror_chain-ed93a00cf942ade7.rlib" "/opt/crater/target/debug/deps/libbacktrace-7d0e6e9947fb0f32.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-368c790ebe56cc85.rlib" "/opt/crater/target/debug/deps/librustc_demangle-550740f22608ec8c.rlib" "/opt/crater/target/debug/deps/libcfg_if-55146e185022d321.rlib" "/opt/crater/target/debug/deps/libdbghelp-94ab056f98c942bf.rlib" "/opt/crater/target/debug/deps/libwinapi-d699aca12e7b19a5.rlib" "/opt/crater/target/debug/deps/libkernel32-68d3558eb82f9807.rlib" "/opt/crater/target/debug/deps/liblibc-e7a8e468d1534af4.rlib" "/opt/crater/target/debug/deps/libfutures-23c233f6e6c75d65.rlib" "/opt/crater/target/debug/deps/liblog-cde2563351553608.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-4a76ff35a356aedf.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e11c7b3b3225afe2.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-13217ede3d276f16.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-621a9ee22da6caa1.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-546c844e8071bbeb.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-be9569e4d599746f.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-47d8845cef2a3bc5.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-017511bce73a530c.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-be7979c57a08057b.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d6459c4f0817c67c.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-580035dd98451925.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-aee5c24fff305dea.rlib" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-8a55a4098920125a.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-9fc4b5be2ba5cc19.rlib" "-Wl,-Bdynamic" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/libbacktrace-7d0e6e9947fb0f32.rlib(backtrace-7d0e6e9947fb0f32.backtrace.exrcfy2c-cgu.4.rcgu.o): In function `backtrace::symbolize::libbacktrace::init_state::{{closure}}':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.0/src/symbolize/libbacktrace.rs:156: undefined reference to `backtrace_create_state'
[INFO] [stderr]           /opt/crater/target/debug/deps/libbacktrace-7d0e6e9947fb0f32.rlib(backtrace-7d0e6e9947fb0f32.backtrace.exrcfy2c-cgu.4.rcgu.o): In function `backtrace::symbolize::libbacktrace::resolve':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.0/src/symbolize/libbacktrace.rs:173: undefined reference to `backtrace_pcinfo'
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.0/src/symbolize/libbacktrace.rs:177: undefined reference to `backtrace_syminfo'
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rvpn`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "d2d844467edfcc9adacebe60bbdcf6a07ce00b23bed48a78dd5c0c6b93b612ce"`
[INFO] running `"docker" "rm" "-f" "d2d844467edfcc9adacebe60bbdcf6a07ce00b23bed48a78dd5c0c6b93b612ce"`
[INFO] [stdout] d2d844467edfcc9adacebe60bbdcf6a07ce00b23bed48a78dd5c0c6b93b612ce