[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-1.38-1/sources/1.37.0/gh/babariviere/unibot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/babariviere/unibot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/babariviere/unibot" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/babariviere/unibot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of babariviere/unibot 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 babariviere/unibot
[INFO] finished frobbing babariviere/unibot
[INFO] frobbed toml for babariviere/unibot written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 babariviere/unibot 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-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 819500f57710b597c72694d0d0e4d5bca28f079f2f45c32b7fa20fdfa950e084
[INFO] running `"docker" "start" "-a" "819500f57710b597c72694d0d0e4d5bca28f079f2f45c32b7fa20fdfa950e084"`
[INFO] [stderr]    Compiling siphasher v0.2.0
[INFO] [stderr]    Compiling openssl v0.9.6
[INFO] [stderr]    Compiling mac v0.0.2
[INFO] [stderr]    Compiling metadeps v1.1.1
[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 bit-set v0.4.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling futf v0.1.2
[INFO] [stderr]    Compiling url v1.3.0
[INFO] [stderr]    Compiling clap v2.19.3
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling backtrace v0.3.0
[INFO] [stderr]    Compiling tendril v0.2.3
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]    Compiling phf v0.7.21
[INFO] [stderr]    Compiling openssl-sys v0.9.6
[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] 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]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling html5ever v0.5.4
[INFO] [stderr]    Compiling hyper v0.10.0
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/crawl/config.rs:9:17
[INFO] [stderr]   |
[INFO] [stderr] 9 |     filter: Arc<Fn(&Url, &Url) -> bool + Send + Sync>,
[INFO] [stderr]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Url, &Url) -> bool + Send + Sync`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[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: #[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/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.unibot.3p8bbk92-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54" "/opt/crater/target/debug/deps/unibot-0f10a0a97695bf54.z0yu95pb82nlaw9.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/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libterm-d2c95fd92f4dc2b7.rlib" "/opt/crater/target/debug/deps/liblibunibot-3ae3751d040db5ff.rlib" "/opt/crater/target/debug/deps/libselect-73d6d51e310fc149.rlib" "/opt/crater/target/debug/deps/libhtml5ever-217932696ff59b6f.rlib" "/opt/crater/target/debug/deps/libtendril-9617c3b83649b2d3.rlib" "/opt/crater/target/debug/deps/libencoding-a504f0c84579b1c2.rlib" "/opt/crater/target/debug/deps/libencoding_index_tradchinese-a5c8de531ff486b0.rlib" "/opt/crater/target/debug/deps/libencoding_index_simpchinese-5c0e60522710732c.rlib" "/opt/crater/target/debug/deps/libencoding_index_japanese-1be8d91d0a52e864.rlib" "/opt/crater/target/debug/deps/libencoding_index_korean-3525f39ef2e9a9c9.rlib" "/opt/crater/target/debug/deps/libencoding_index_singlebyte-06eaa0be26a98b31.rlib" "/opt/crater/target/debug/deps/libutf8-faf3d2e047773436.rlib" "/opt/crater/target/debug/deps/libfutf-081eaf76f173ece6.rlib" "/opt/crater/target/debug/deps/libphf-4e34fe3e33879907.rlib" "/opt/crater/target/debug/deps/libmac-a9f9b781b9a3392f.rlib" "/opt/crater/target/debug/deps/libstring_cache-caac424225a70154.rlib" "/opt/crater/target/debug/deps/libphf_shared-bb7abdb3afa99bfe.rlib" "/opt/crater/target/debug/deps/libsiphasher-361bb080e243e705.rlib" "/opt/crater/target/debug/deps/libserde-da162c74965fa984.rlib" "/opt/crater/target/debug/deps/libdebug_unreachable-9e1d1d5abaedf467.rlib" "/opt/crater/target/debug/deps/libunreachable-0e59f709d2757188.rlib" "/opt/crater/target/debug/deps/libvoid-d4bd79b68b9b921e.rlib" "/opt/crater/target/debug/deps/libbit_set-d5c382c1c65f1d65.rlib" "/opt/crater/target/debug/deps/libbit_vec-4309716940d6fbe7.rlib" "/opt/crater/target/debug/deps/libhyper_native_tls-a51376fa38b5acb8.rlib" "/opt/crater/target/debug/deps/libnative_tls-0308b55b579883b5.rlib" "/opt/crater/target/debug/deps/libopenssl-d97df2b3dada9c39.rlib" "/opt/crater/target/debug/deps/libopenssl_sys-ac507ce05a10a1e7.rlib" "/opt/crater/target/debug/deps/liblazy_static-287e3c5731c128ca.rlib" "/opt/crater/target/debug/deps/libantidote-94a850dfe0d209c0.rlib" "/opt/crater/target/debug/deps/libhyper-fdb47bc75db7f4ca.rlib" "/opt/crater/target/debug/deps/libmime-8d36155f96c88998.rlib" "/opt/crater/target/debug/deps/liblog-cde2563351553608.rlib" "/opt/crater/target/debug/deps/liblanguage_tags-31855a1d4a2b270f.rlib" "/opt/crater/target/debug/deps/libtypeable-f6f402f054f36331.rlib" "/opt/crater/target/debug/deps/libtraitobject-3a7ff072fb9c31e5.rlib" "/opt/crater/target/debug/deps/libnum_cpus-29d47546e86a8682.rlib" "/opt/crater/target/debug/deps/libhttparse-6ab5dded4724cea6.rlib" "/opt/crater/target/debug/deps/libunicase-1adbc7860ffb9668.rlib" "/opt/crater/target/debug/deps/liburl-914cb28520e65cc5.rlib" "/opt/crater/target/debug/deps/libidna-d76b9061803e74b1.rlib" "/opt/crater/target/debug/deps/libunicode_normalization-da54576e152962e8.rlib" "/opt/crater/target/debug/deps/libunicode_bidi-b90d12c2735d1f19.rlib" "/opt/crater/target/debug/deps/libmatches-f35061b215c2511f.rlib" "/opt/crater/target/debug/deps/libtime-62f5cc98a53640cb.rlib" "/opt/crater/target/debug/deps/librustc_serialize-eee3b26c21f1fbaf.rlib" "/opt/crater/target/debug/deps/liberror_chain-6ff3087a4d123209.rlib" "/opt/crater/target/debug/deps/libbacktrace-776272bb6ce3faf7.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-1887860ca680232e.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/libclap-24a51e6fa59e0818.rlib" "/opt/crater/target/debug/deps/libunicode_segmentation-03cae7d90269f722.rlib" "/opt/crater/target/debug/deps/libterm_size-6d5dde5125454304.rlib" "/opt/crater/target/debug/deps/libvec_map-0b8971ea3fda61c2.rlib" "/opt/crater/target/debug/deps/libbitflags-05fa20c47058c1db.rlib" "/opt/crater/target/debug/deps/libunicode_width-8e49fc9eb4c9dbb0.rlib" "/opt/crater/target/debug/deps/liblibc-3a9ab9364d9c9a5c.rlib" "/opt/crater/target/debug/deps/libansi_term-5ad2ac4f1272cbf6.rlib" "/opt/crater/target/debug/deps/libstrsim-25c4e5da740a9e30.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" "-lssl" "-lcrypto" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/libbacktrace-776272bb6ce3faf7.rlib(backtrace-776272bb6ce3faf7.backtrace.7iu1pjun-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-776272bb6ce3faf7.rlib(backtrace-776272bb6ce3faf7.backtrace.7iu1pjun-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 `unibot`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "819500f57710b597c72694d0d0e4d5bca28f079f2f45c32b7fa20fdfa950e084"`
[INFO] running `"docker" "rm" "-f" "819500f57710b597c72694d0d0e4d5bca28f079f2f45c32b7fa20fdfa950e084"`
[INFO] [stdout] 819500f57710b597c72694d0d0e4d5bca28f079f2f45c32b7fa20fdfa950e084