[INFO] updating cached repository babariviere/unibot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/babariviere/unibot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/babariviere/unibot" "work/ex/beta-1.37-6/sources/1.36.0/gh/babariviere/unibot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/babariviere/unibot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/babariviere/unibot" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/babariviere/unibot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/babariviere/unibot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 64c81d5880811da6d79f7b70fda111bf0e00f4e0
[INFO] sha for GitHub repo babariviere/unibot: 64c81d5880811da6d79f7b70fda111bf0e00f4e0
[INFO] validating manifest of babariviere/unibot on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of babariviere/unibot on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing babariviere/unibot
[INFO] finished frobbing babariviere/unibot
[INFO] frobbed toml for babariviere/unibot written to work/ex/beta-1.37-6/sources/1.36.0/gh/babariviere/unibot/Cargo.toml
[INFO] started frobbing babariviere/unibot
[INFO] finished frobbing babariviere/unibot
[INFO] frobbed toml for babariviere/unibot written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/babariviere/unibot/Cargo.toml
[INFO] crate babariviere/unibot already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing babariviere/unibot against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/babariviere/unibot:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 03506345c74e5b879d59ff25908c6d4c1be6e986fcbd45e98fef20dff81444a7
[INFO] running `"docker" "start" "-a" "03506345c74e5b879d59ff25908c6d4c1be6e986fcbd45e98fef20dff81444a7"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]    Compiling error-chain v0.7.2
[INFO] [stderr]    Compiling siphasher v0.2.0
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling gcc v0.3.41
[INFO] [stderr]    Compiling openssl v0.9.6
[INFO] [stderr]    Compiling mac v0.0.2
[INFO] [stderr]    Compiling bit-vec v0.4.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]    Compiling strsim v0.5.2
[INFO] [stderr]    Compiling unicode-segmentation v0.1.3
[INFO] [stderr]    Compiling utf-8 v0.6.0
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling futf v0.1.2
[INFO] [stderr]    Compiling url v1.3.0
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling num_cpus v1.2.1
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling term_size v0.2.1
[INFO] [stderr]    Compiling term v0.4.4
[INFO] [stderr]    Compiling phf v0.7.21
[INFO] [stderr]    Compiling tendril v0.2.3
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.3.0/src/form_urlencoded.rs:246:40
[INFO] [stderr]     |
[INFO] [stderr] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 246 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr] 
[INFO] [stderr]    Compiling clap v2.19.3
[INFO] [stderr]    Compiling metadeps v1.1.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling openssl-sys v0.9.6
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling hyper v0.10.0
[INFO] [stderr]    Compiling string_cache v0.2.29
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]    Compiling error-chain v0.8.1
[INFO] [stderr]    Compiling html5ever v0.5.4
[INFO] [stderr]    Compiling native-tls v0.1.1
[INFO] [stderr]    Compiling hyper-native-tls v0.2.1
[INFO] [stderr]    Compiling select v0.3.0
[INFO] [stderr]    Compiling unibot v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:2:1
[INFO] [stderr]    |
[INFO] [stderr] 2  | / error_chain!{
[INFO] [stderr] 3  | |     foreign_links {
[INFO] [stderr] 4  | |         Io(::std::io::Error);
[INFO] [stderr] 5  | |         Hyper(::hyper::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |     }
[INFO] [stderr] 23 | | }
[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: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/error.rs:2:1
[INFO] [stderr]    |
[INFO] [stderr] 2  | / error_chain!{
[INFO] [stderr] 3  | |     foreign_links {
[INFO] [stderr] 4  | |         Io(::std::io::Error);
[INFO] [stderr] 5  | |         Hyper(::hyper::Error);
[INFO] [stderr] ...  |
[INFO] [stderr] 22 | |     }
[INFO] [stderr] 23 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[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] 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/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.unibot.f30b3m26-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef" "/opt/crater/target/debug/deps/unibot-eccc196a91efa1ef.3aknodq89pj7pfvq.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/usr/lib/x86_64-linux-gnu" "-L" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libterm-11f30ff723608bd9.rlib" "/opt/crater/target/debug/deps/liblibunibot-3efa5e1ddfc8c442.rlib" "/opt/crater/target/debug/deps/libselect-eb8d6d22aefbbd03.rlib" "/opt/crater/target/debug/deps/libhtml5ever-bc1938d8c7320aae.rlib" "/opt/crater/target/debug/deps/libtendril-bdaa1e65512f382a.rlib" "/opt/crater/target/debug/deps/libencoding-6d002865260c7e42.rlib" "/opt/crater/target/debug/deps/libencoding_index_tradchinese-12ac35bb3d9ca72c.rlib" "/opt/crater/target/debug/deps/libencoding_index_simpchinese-5b0e13dd15efbe08.rlib" "/opt/crater/target/debug/deps/libencoding_index_japanese-9ecddd9b7a278c0d.rlib" "/opt/crater/target/debug/deps/libencoding_index_korean-33e26ee7956d5b9b.rlib" "/opt/crater/target/debug/deps/libencoding_index_singlebyte-a9715c8dd8bfca60.rlib" "/opt/crater/target/debug/deps/libutf8-ad80b40bbbc8ee61.rlib" "/opt/crater/target/debug/deps/libfutf-bf16b51d72ba093b.rlib" "/opt/crater/target/debug/deps/libphf-f9eb287a3b34c19f.rlib" "/opt/crater/target/debug/deps/libmac-d53c3887a73e8963.rlib" "/opt/crater/target/debug/deps/libstring_cache-8a600676af983e88.rlib" "/opt/crater/target/debug/deps/libphf_shared-666d468388099438.rlib" "/opt/crater/target/debug/deps/libsiphasher-030e901c9262bb85.rlib" "/opt/crater/target/debug/deps/libserde-63b5c3e795e93af9.rlib" "/opt/crater/target/debug/deps/libdebug_unreachable-9ee3c7c4bf86736f.rlib" "/opt/crater/target/debug/deps/libunreachable-2017a4cad4d1cf08.rlib" "/opt/crater/target/debug/deps/libvoid-e4249880315f5034.rlib" "/opt/crater/target/debug/deps/libbit_set-fda11afceafb4b13.rlib" "/opt/crater/target/debug/deps/libbit_vec-d9071db251b0dd95.rlib" "/opt/crater/target/debug/deps/libhyper_native_tls-f550a6e75d880fba.rlib" "/opt/crater/target/debug/deps/libnative_tls-5aa7c3a08f63222b.rlib" "/opt/crater/target/debug/deps/libopenssl-e9536dfe7aae750c.rlib" "/opt/crater/target/debug/deps/libopenssl_sys-d8df3ea7ab5b0aa4.rlib" "/opt/crater/target/debug/deps/liblazy_static-d7718b504e03d468.rlib" "/opt/crater/target/debug/deps/libantidote-01606454dca6e687.rlib" "/opt/crater/target/debug/deps/libhyper-de2891f569049df3.rlib" "/opt/crater/target/debug/deps/libmime-55788ae0e1291224.rlib" "/opt/crater/target/debug/deps/liblog-6ed9f332a2a9d379.rlib" "/opt/crater/target/debug/deps/liblanguage_tags-64cc9c97c5566356.rlib" "/opt/crater/target/debug/deps/libtypeable-215d98ef64fbe0e2.rlib" "/opt/crater/target/debug/deps/libtraitobject-33e4f3223d24ebc9.rlib" "/opt/crater/target/debug/deps/libnum_cpus-9c618dce7c13b2eb.rlib" "/opt/crater/target/debug/deps/libhttparse-ab9711c806bc7411.rlib" "/opt/crater/target/debug/deps/libunicase-62cd01cb2baf47a1.rlib" "/opt/crater/target/debug/deps/liburl-3293b6de3a6b5e19.rlib" "/opt/crater/target/debug/deps/libidna-8844855706500b36.rlib" "/opt/crater/target/debug/deps/libunicode_normalization-23eca4879ec5b633.rlib" "/opt/crater/target/debug/deps/libunicode_bidi-0d68b053d08a4c92.rlib" "/opt/crater/target/debug/deps/libmatches-3f07721d4e47c77b.rlib" "/opt/crater/target/debug/deps/libtime-9c5d958f2580f58d.rlib" "/opt/crater/target/debug/deps/librustc_serialize-d3298b24124a3c5c.rlib" "/opt/crater/target/debug/deps/liberror_chain-d0f7193081bc93ef.rlib" "/opt/crater/target/debug/deps/libbacktrace-34eb3c4877126904.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-ee554bdf8566c032.rlib" "/opt/crater/target/debug/deps/librustc_demangle-274c4da954efaa0a.rlib" "/opt/crater/target/debug/deps/libcfg_if-fcc9aff037f57c39.rlib" "/opt/crater/target/debug/deps/libdbghelp-4c5eeff50cd0cc4c.rlib" "/opt/crater/target/debug/deps/libwinapi-6779d1f046ce211b.rlib" "/opt/crater/target/debug/deps/libkernel32-579101ee9cfddddd.rlib" "/opt/crater/target/debug/deps/libclap-0658e65bc79f8d07.rlib" "/opt/crater/target/debug/deps/libunicode_segmentation-2132bb3067fed94a.rlib" "/opt/crater/target/debug/deps/libterm_size-7693d6d90b320215.rlib" "/opt/crater/target/debug/deps/libvec_map-ef49b491a2aa4b7d.rlib" "/opt/crater/target/debug/deps/libbitflags-df219a1ec24cdf3b.rlib" "/opt/crater/target/debug/deps/libunicode_width-003ecf1eefa64fd0.rlib" "/opt/crater/target/debug/deps/liblibc-886b65bef8980b60.rlib" "/opt/crater/target/debug/deps/libansi_term-334ed51196badc8f.rlib" "/opt/crater/target/debug/deps/libstrsim-c50301fc79c38a31.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9895e8982b0a79e7.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-57306b8ed3378a0e.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-54463ae5adae3649.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-d99667b199a9875a.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-51f4300e102199f5.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-b3ccf1f7737a6a91.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-157c37a3ceb78853.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-505bcee45aafb736.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-c29abd529ba4452b.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-895383a3232f6572.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-5594cb4f559bc761.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-38e90baf978bc428.rlib" "-Wl,-Bdynamic" "-lssl" "-lcrypto" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/libbacktrace-34eb3c4877126904.rlib(backtrace-34eb3c4877126904.backtrace.7kyy73zy-cgu.5.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-34eb3c4877126904.rlib(backtrace-34eb3c4877126904.backtrace.7kyy73zy-cgu.5.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 `unibot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "03506345c74e5b879d59ff25908c6d4c1be6e986fcbd45e98fef20dff81444a7"`
[INFO] running `"docker" "rm" "-f" "03506345c74e5b879d59ff25908c6d4c1be6e986fcbd45e98fef20dff81444a7"`
[INFO] [stdout] 03506345c74e5b879d59ff25908c6d4c1be6e986fcbd45e98fef20dff81444a7