[INFO] updating cached repository onelson/loose-coupling
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/onelson/loose-coupling
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/onelson/loose-coupling" "work/ex/beta-1.37-6/sources/1.36.0/gh/onelson/loose-coupling"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/onelson/loose-coupling'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/onelson/loose-coupling" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/onelson/loose-coupling"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/onelson/loose-coupling'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4f9f11af233ce1d8de3d3f1e7f8c419da841f53f
[INFO] sha for GitHub repo onelson/loose-coupling: 4f9f11af233ce1d8de3d3f1e7f8c419da841f53f
[INFO] validating manifest of onelson/loose-coupling 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 onelson/loose-coupling 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 onelson/loose-coupling
[INFO] finished frobbing onelson/loose-coupling
[INFO] frobbed toml for onelson/loose-coupling written to work/ex/beta-1.37-6/sources/1.36.0/gh/onelson/loose-coupling/Cargo.toml
[INFO] started frobbing onelson/loose-coupling
[INFO] finished frobbing onelson/loose-coupling
[INFO] frobbed toml for onelson/loose-coupling written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/onelson/loose-coupling/Cargo.toml
[INFO] crate onelson/loose-coupling 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 onelson/loose-coupling 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/onelson/loose-coupling:/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] bd449ae10e2ed24c07d0052481827a42eb24a13dcdfbb396963c89d7fe38b2a3
[INFO] running `"docker" "start" "-a" "bd449ae10e2ed24c07d0052481827a42eb24a13dcdfbb396963c89d7fe38b2a3"`
[INFO] [stderr]    Compiling phf_shared v0.7.20
[INFO] [stderr]    Compiling serde v0.8.19
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling gcc v0.3.39
[INFO] [stderr]    Compiling khronos_api v1.0.0
[INFO] [stderr]    Compiling inflate v0.1.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]    Compiling smallvec v0.1.8
[INFO] [stderr]    Compiling atom v0.3.4
[INFO] [stderr]    Compiling num_cpus v1.2.0
[INFO] [stderr]    Compiling xml-rs v0.3.5
[INFO] [stderr]    Compiling x11-dl v2.11.0
[INFO] [stderr]    Compiling shared_library v0.1.5
[INFO] [stderr]    Compiling silverknife-fontconfig-sys v0.1.0
[INFO] [stderr]    Compiling num-complex v0.1.35
[INFO] [stderr]    Compiling nodrop v0.1.8
[INFO] [stderr]    Compiling stb_truetype v0.2.0
[INFO] [stderr]    Compiling gif v0.9.0
[INFO] [stderr]    Compiling phf v0.7.20
[INFO] [stderr]    Compiling phf_generator v0.7.20
[INFO] [stderr]    Compiling deque v0.3.1
[INFO] [stderr]    Compiling tempfile v2.1.4
[INFO] [stderr]    Compiling num-bigint v0.1.35
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling arrayvec v0.3.20
[INFO] [stderr]    Compiling phf_codegen v0.7.20
[INFO] [stderr]    Compiling rayon v0.5.0
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling target_build_utils v0.1.2
[INFO] [stderr]    Compiling font-loader v0.1.0
[INFO] [stderr]    Compiling rusttype v0.2.1
[INFO] [stderr]    Compiling miniz-sys v0.1.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr] warning[E0311]: the parameter type `K` may not live long enough
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.1/src/support/bst/map.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |             match node.force() {
[INFO] [stderr]    |                   ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding an explicit lifetime bound for `K`
[INFO] [stderr] note: the parameter type `K` must be valid for the anonymous lifetime #1 defined on the function body at 77:9...
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.1/src/support/bst/map.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 | /         fn clone_subtree<K: Clone, V: Clone>(
[INFO] [stderr] 78 | |                 node: node::NodeRef<marker::Immut, K, V, marker::LeafOrInternal>)
[INFO] [stderr] 79 | |                 -> BTreeMap<K, V> {
[INFO] [stderr] 80 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 136| |             }
[INFO] [stderr] 137| |         }
[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] warning[E0311]: the parameter type `V` may not live long enough
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.1/src/support/bst/map.rs:81:19
[INFO] [stderr]    |
[INFO] [stderr] 81 |             match node.force() {
[INFO] [stderr]    |                   ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider adding an explicit lifetime bound for `V`
[INFO] [stderr] note: the parameter type `V` must be valid for the anonymous lifetime #1 defined on the function body at 77:9...
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusttype-0.2.1/src/support/bst/map.rs:77:9
[INFO] [stderr]    |
[INFO] [stderr] 77 | /         fn clone_subtree<K: Clone, V: Clone>(
[INFO] [stderr] 78 | |                 node: node::NodeRef<marker::Immut, K, V, marker::LeafOrInternal>)
[INFO] [stderr] 79 | |                 -> BTreeMap<K, V> {
[INFO] [stderr] 80 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 136| |             }
[INFO] [stderr] 137| |         }
[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 pulse v0.5.3
[INFO] [stderr]    Compiling memmap v0.2.3
[INFO] [stderr]    Compiling num-rational v0.1.35
[INFO] [stderr]    Compiling wayland-scanner v0.5.11
[INFO] [stderr]    Compiling gl_generator v0.5.2
[INFO] [stderr]    Compiling num v0.1.36
[INFO] [stderr]    Compiling jpeg-decoder v0.1.8
[INFO] [stderr]    Compiling specs v0.7.0
[INFO] [stderr]    Compiling serde_json v0.8.4
[INFO] [stderr]    Compiling enum_primitive v0.1.0
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling flate2 v0.2.14
[INFO] [stderr]    Compiling wayland-client v0.5.12
[INFO] [stderr]    Compiling png v0.5.2
[INFO] [stderr]    Compiling glutin v0.6.2
[INFO] [stderr]    Compiling glium v0.15.0
[INFO] [stderr]    Compiling image v0.10.4
[INFO] [stderr]    Compiling libloading v0.3.1
[INFO] [stderr]    Compiling dlib v0.3.1
[INFO] [stderr]    Compiling wayland-sys v0.5.11
[INFO] [stderr]    Compiling wayland-kbd v0.3.6
[INFO] [stderr]    Compiling wayland-window v0.2.3
[INFO] [stderr]    Compiling radiant-rs v0.1.1
[INFO] [stderr]    Compiling loose-coupling v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> src/main.rs:41:24
[INFO] [stderr]    |
[INFO] [stderr] 41 |     utils::renderloop(|state| {
[INFO] [stderr]    |                        ^^^^^ help: consider prefixing with an underscore: `_state`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[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/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.loose_coupling.f3fvnl7k-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23" "/opt/crater/target/debug/deps/loose_coupling-9782be404dfa8f23.1lwqb3o01jvwoq5a.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/target/debug/build/miniz-sys-6d918c80ab138e08/out" "-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/libradiant_rs-5378f1e63db99d02.rlib" "/opt/crater/target/debug/deps/libfont_loader-145c4ec6dcdf1c07.rlib" "/opt/crater/target/debug/deps/libfontconfig_sys-7accc4e433501535.rlib" "/opt/crater/target/debug/deps/libunicode_normalization-e61083bc8a40ac7d.rlib" "/opt/crater/target/debug/deps/librusttype-34ba9069f37e1f06.rlib" "/opt/crater/target/debug/deps/liblinked_hash_map-60ff1af7b8335135.rlib" "/opt/crater/target/debug/deps/libstb_truetype-c18004c14041c0c4.rlib" "/opt/crater/target/debug/deps/libbyteorder-cff01e473fad35f8.rlib" "/opt/crater/target/debug/deps/libarrayvec-afd53ed5d2a85131.rlib" "/opt/crater/target/debug/deps/libnodrop-074819f432bf3bbd.rlib" "/opt/crater/target/debug/deps/libodds-11afd1b039fbbf92.rlib" "/opt/crater/target/debug/deps/libregex-9b79d6a2beb4499b.rlib" "/opt/crater/target/debug/deps/libutf8_ranges-00f0fc1fcb3347d8.rlib" "/opt/crater/target/debug/deps/libregex_syntax-5f2e8797984afb68.rlib" "/opt/crater/target/debug/deps/libthread_local-2215f3aa5e2f7974.rlib" "/opt/crater/target/debug/deps/libthread_id-b4a5f92c53f36d17.rlib" "/opt/crater/target/debug/deps/libaho_corasick-4afe7cdbc84761f3.rlib" "/opt/crater/target/debug/deps/libmemchr-a1270c1d7fb8c6ef.rlib" "/opt/crater/target/debug/deps/libimage-1a55f9d22037dd0a.rlib" "/opt/crater/target/debug/deps/libscoped_threadpool-b62102866a1f3b83.rlib" "/opt/crater/target/debug/deps/libgif-6e178b28354901cb.rlib" "/opt/crater/target/debug/deps/libcolor_quant-cd7707e8063c859e.rlib" "/opt/crater/target/debug/deps/liblzw-f7952389a69c619d.rlib" "/opt/crater/target/debug/deps/libjpeg_decoder-66510a5c73a425fd.rlib" "/opt/crater/target/debug/deps/librayon-73d10462358145f5.rlib" "/opt/crater/target/debug/deps/libnum_cpus-3f7c14255ffe8bdc.rlib" "/opt/crater/target/debug/deps/libdeque-b106dc4830fa9152.rlib" "/opt/crater/target/debug/deps/libpng-8be578a0b3c31e97.rlib" "/opt/crater/target/debug/deps/libflate2-038084321de8ebb1.rlib" "/opt/crater/target/debug/deps/libminiz_sys-d0aeebc0531616fe.rlib" "/opt/crater/target/debug/deps/libinflate-ee12526f9b65db51.rlib" "/opt/crater/target/debug/deps/libenum_primitive-5aa0f7c7ec0482ab.rlib" "/opt/crater/target/debug/deps/libnum-2b07f4245060b4f7.rlib" "/opt/crater/target/debug/deps/libnum_complex-4bdd521b59077ffb.rlib" "/opt/crater/target/debug/deps/libnum_rational-3f816456a62b90f6.rlib" "/opt/crater/target/debug/deps/libnum_bigint-7093873602b610c0.rlib" "/opt/crater/target/debug/deps/librustc_serialize-d3298b24124a3c5c.rlib" "/opt/crater/target/debug/deps/libnum_iter-0f89e24b063e10a9.rlib" "/opt/crater/target/debug/deps/libnum_integer-04eeb9b5654fb2cc.rlib" "/opt/crater/target/debug/deps/libnum_traits-5f46d2a51c998e26.rlib" "/opt/crater/target/debug/deps/libglium-e358cbe5cfbf2ade.rlib" "/opt/crater/target/debug/deps/libglutin-cfdfc74b000a2340.rlib" "/opt/crater/target/debug/deps/libwayland_window-3263b69de420ccc7.rlib" "/opt/crater/target/debug/deps/libtempfile-156ba51428f7f761.rlib" "/opt/crater/target/debug/deps/libbyteorder-1f5f1f9046363f44.rlib" "/opt/crater/target/debug/deps/libwayland_kbd-217de3d9298c70b0.rlib" "/opt/crater/target/debug/deps/libmemmap-892cd63a7723fb26.rlib" "/opt/crater/target/debug/deps/libosmesa_sys-24697713a3842e02.rlib" "/opt/crater/target/debug/deps/libwayland_client-3c16445e70032ca2.rlib" "/opt/crater/target/debug/deps/libwayland_sys-abcf6c5d69848b3d.rlib" "/opt/crater/target/debug/deps/liblazy_static-80c68ec466d08be3.rlib" "/opt/crater/target/debug/deps/libdlib-2082f65ff7106d6c.rlib" "/opt/crater/target/debug/deps/liblibloading-80907661258c7a8a.rlib" "/opt/crater/target/debug/deps/libcrossbeam-74e79b646380b665.rlib" "/opt/crater/target/debug/deps/libbitflags-df219a1ec24cdf3b.rlib" "/opt/crater/target/debug/deps/libx11_dl-14370e8a5dab2fe9.rlib" "/opt/crater/target/debug/deps/libshared_library-aafac249adc8bff3.rlib" "/opt/crater/target/debug/deps/libsmallvec-b1fe14462ebabc35.rlib" "/opt/crater/target/debug/deps/libbacktrace-ea863390b4a6c92f.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-44a21dc39612b7f6.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/liblazy_static-d7718b504e03d468.rlib" "/opt/crater/target/debug/deps/librand-5d489187a9b4c21e.rlib" "/opt/crater/target/debug/deps/libspecs-e18aed3e7c00b5f3.rlib" "/opt/crater/target/debug/deps/libtuple_utils-5802f5431f7d3c54.rlib" "/opt/crater/target/debug/deps/libfnv-225c0a678ed1f187.rlib" "/opt/crater/target/debug/deps/libthreadpool-013271edb2cce694.rlib" "/opt/crater/target/debug/deps/libpulse-082c98f1ddc060a8.rlib" "/opt/crater/target/debug/deps/libatom-ce85cb4c524ff3bc.rlib" "/opt/crater/target/debug/deps/libmopa-0fa3c1e41a943bac.rlib" "/opt/crater/target/debug/deps/libtime-dce1fad28286ed01.rlib" "/opt/crater/target/debug/deps/liblibc-e444f8f33bb3c635.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" "-lfontconfig" "-lfreetype" "-ldl" "-ldl" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/libbacktrace-ea863390b4a6c92f.rlib(backtrace-ea863390b4a6c92f.backtrace.890h2wkg-cgu.15.rcgu.o): In function `backtrace::symbolize::libbacktrace::init_state::{{closure}}':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.2.3/src/symbolize/libbacktrace.rs:150: undefined reference to `backtrace_create_state'
[INFO] [stderr]           /opt/crater/target/debug/deps/libbacktrace-ea863390b4a6c92f.rlib(backtrace-ea863390b4a6c92f.backtrace.890h2wkg-cgu.15.rcgu.o): In function `backtrace::symbolize::libbacktrace::resolve':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.2.3/src/symbolize/libbacktrace.rs:167: undefined reference to `backtrace_pcinfo'
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.2.3/src/symbolize/libbacktrace.rs:171: 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 `loose-coupling`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bd449ae10e2ed24c07d0052481827a42eb24a13dcdfbb396963c89d7fe38b2a3"`
[INFO] running `"docker" "rm" "-f" "bd449ae10e2ed24c07d0052481827a42eb24a13dcdfbb396963c89d7fe38b2a3"`
[INFO] [stdout] bd449ae10e2ed24c07d0052481827a42eb24a13dcdfbb396963c89d7fe38b2a3