[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-1.38-1/sources/1.37.0/gh/onelson/loose-coupling"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/onelson/loose-coupling'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/onelson/loose-coupling" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/onelson/loose-coupling"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of onelson/loose-coupling 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 onelson/loose-coupling
[INFO] finished frobbing onelson/loose-coupling
[INFO] frobbed toml for onelson/loose-coupling written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 onelson/loose-coupling 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] b5644c92234a84affff13072496d933c8c8a447bdbe31ebaee5a0cf866b015a2
[INFO] running `"docker" "start" "-a" "b5644c92234a84affff13072496d933c8c8a447bdbe31ebaee5a0cf866b015a2"`
[INFO] [stderr]    Compiling serde v0.8.19
[INFO] [stderr]    Compiling gcc v0.3.39
[INFO] [stderr]    Compiling atom v0.3.4
[INFO] [stderr]    Compiling smallvec v0.1.8
[INFO] [stderr]    Compiling threadpool v1.3.2
[INFO] [stderr]    Compiling num_cpus v1.2.0
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling shared_library v0.1.5
[INFO] [stderr]    Compiling x11-dl v2.11.0
[INFO] [stderr]    Compiling silverknife-fontconfig-sys v0.1.0
[INFO] [stderr]    Compiling nodrop v0.1.8
[INFO] [stderr]    Compiling stb_truetype v0.2.0
[INFO] [stderr]    Compiling phf_generator v0.7.20
[INFO] [stderr]    Compiling deque v0.3.1
[INFO] [stderr]    Compiling wayland-scanner v0.5.11
[INFO] [stderr]    Compiling num-bigint v0.1.35
[INFO] [stderr]    Compiling tempfile v2.1.4
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[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 glutin v0.6.2
[INFO] [stderr]    Compiling glium v0.15.0
[INFO] [stderr]    Compiling rayon v0.5.0
[INFO] [stderr]    Compiling miniz-sys v0.1.7
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling target_build_utils v0.1.2
[INFO] [stderr]    Compiling rusttype v0.2.1
[INFO] [stderr]    Compiling wayland-client v0.5.12
[INFO] [stderr]    Compiling font-loader v0.1.0
[INFO] [stderr]    Compiling memmap v0.2.3
[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]    = note: for more information, try `rustc --explain E0729`
[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]    = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling pulse v0.5.3
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling num-rational v0.1.35
[INFO] [stderr]    Compiling jpeg-decoder v0.1.8
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling num v0.1.36
[INFO] [stderr]    Compiling serde_json v0.8.4
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling specs v0.7.0
[INFO] [stderr]    Compiling flate2 v0.2.14
[INFO] [stderr]    Compiling enum_primitive v0.1.0
[INFO] [stderr]    Compiling png v0.5.2
[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/1.37.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.loose_coupling.3tjtkwc6-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6" "/opt/crater/target/debug/deps/loose_coupling-609705bae09466f6.1svcsp32iu9f3rpd.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-fcf4539ebeafe76c/out" "-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/libradiant_rs-f43adc756b401398.rlib" "/opt/crater/target/debug/deps/libfont_loader-45f185aa78de3564.rlib" "/opt/crater/target/debug/deps/libfontconfig_sys-d3e18808041b7446.rlib" "/opt/crater/target/debug/deps/libunicode_normalization-6a2176b4dd2afb30.rlib" "/opt/crater/target/debug/deps/librusttype-3f3ae4f22aca962d.rlib" "/opt/crater/target/debug/deps/liblinked_hash_map-04b5efa70ebe1185.rlib" "/opt/crater/target/debug/deps/libstb_truetype-e7fd83a118bc33fd.rlib" "/opt/crater/target/debug/deps/libbyteorder-6625e79c2e8ceba8.rlib" "/opt/crater/target/debug/deps/libarrayvec-514789a99ff5015e.rlib" "/opt/crater/target/debug/deps/libnodrop-bab56201e038eb31.rlib" "/opt/crater/target/debug/deps/libodds-5ebc0276dab9f0ae.rlib" "/opt/crater/target/debug/deps/libregex-2c611d7fe31cb8ee.rlib" "/opt/crater/target/debug/deps/libutf8_ranges-7e19cf98379531b4.rlib" "/opt/crater/target/debug/deps/libregex_syntax-55ee28c5615612af.rlib" "/opt/crater/target/debug/deps/libthread_local-dcd50ad164439d6b.rlib" "/opt/crater/target/debug/deps/libthread_id-b490e4ef07ffe04b.rlib" "/opt/crater/target/debug/deps/libaho_corasick-c04433ed2ebbed22.rlib" "/opt/crater/target/debug/deps/libmemchr-d6fe51247c47782f.rlib" "/opt/crater/target/debug/deps/libimage-ed671eeca0347321.rlib" "/opt/crater/target/debug/deps/libscoped_threadpool-71d3f86c183f04a6.rlib" "/opt/crater/target/debug/deps/libgif-86c2dac4d31c5a5c.rlib" "/opt/crater/target/debug/deps/libcolor_quant-a3347af2ac87caa9.rlib" "/opt/crater/target/debug/deps/liblzw-1f37f345e8096c7b.rlib" "/opt/crater/target/debug/deps/libjpeg_decoder-1f777afa28138987.rlib" "/opt/crater/target/debug/deps/librayon-64c4e878987f38f6.rlib" "/opt/crater/target/debug/deps/libnum_cpus-846ecef3a336e252.rlib" "/opt/crater/target/debug/deps/libdeque-3620e4c4e3134c95.rlib" "/opt/crater/target/debug/deps/libpng-c3ef8ca739858b39.rlib" "/opt/crater/target/debug/deps/libflate2-d411ee71d9ed462b.rlib" "/opt/crater/target/debug/deps/libminiz_sys-dba85ed32e3b374b.rlib" "/opt/crater/target/debug/deps/libinflate-c3ebc67038fd2709.rlib" "/opt/crater/target/debug/deps/libenum_primitive-841e08a14b8d9ca0.rlib" "/opt/crater/target/debug/deps/libnum-ada301778b0bf9ec.rlib" "/opt/crater/target/debug/deps/libnum_complex-a1ee89caa8552793.rlib" "/opt/crater/target/debug/deps/libnum_rational-3f297cee615ba3c5.rlib" "/opt/crater/target/debug/deps/libnum_bigint-ebd906f84566af57.rlib" "/opt/crater/target/debug/deps/librustc_serialize-eee3b26c21f1fbaf.rlib" "/opt/crater/target/debug/deps/libnum_iter-b7c7094018b9b4e5.rlib" "/opt/crater/target/debug/deps/libnum_integer-1bb350ebdb52db08.rlib" "/opt/crater/target/debug/deps/libnum_traits-0b49cd367c6da4a1.rlib" "/opt/crater/target/debug/deps/libglium-cbbe0ece7df2137c.rlib" "/opt/crater/target/debug/deps/libglutin-7ce92ae0280a573f.rlib" "/opt/crater/target/debug/deps/libwayland_window-a86e647d8bc5755e.rlib" "/opt/crater/target/debug/deps/libtempfile-b8c6918cc741f106.rlib" "/opt/crater/target/debug/deps/libbyteorder-a3968c370c7b24cf.rlib" "/opt/crater/target/debug/deps/libwayland_kbd-37b777f4e6e57649.rlib" "/opt/crater/target/debug/deps/libmemmap-daf5d1ef655b2661.rlib" "/opt/crater/target/debug/deps/libosmesa_sys-0feb5cf044b3f8c6.rlib" "/opt/crater/target/debug/deps/libwayland_client-ca85ce5b630cfc81.rlib" "/opt/crater/target/debug/deps/libwayland_sys-5b70f872c8b97aa6.rlib" "/opt/crater/target/debug/deps/liblazy_static-77397d332fc5c1af.rlib" "/opt/crater/target/debug/deps/libdlib-0b3bbc30e9a7aac9.rlib" "/opt/crater/target/debug/deps/liblibloading-a41865cfec6aab8b.rlib" "/opt/crater/target/debug/deps/libcrossbeam-00cea4f0abee8667.rlib" "/opt/crater/target/debug/deps/libbitflags-05fa20c47058c1db.rlib" "/opt/crater/target/debug/deps/libx11_dl-fce67db3a5c91947.rlib" "/opt/crater/target/debug/deps/libshared_library-036ecfa0dea3f9b1.rlib" "/opt/crater/target/debug/deps/libsmallvec-1e4a6f6633b9c71f.rlib" "/opt/crater/target/debug/deps/libbacktrace-1ba6f2196c43deb9.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-d74a633e2f14ed79.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/liblazy_static-287e3c5731c128ca.rlib" "/opt/crater/target/debug/deps/librand-28296c9a91207140.rlib" "/opt/crater/target/debug/deps/libspecs-1275605cef56b9e4.rlib" "/opt/crater/target/debug/deps/libtuple_utils-a4ab8f7845499f49.rlib" "/opt/crater/target/debug/deps/libfnv-590f8e3d6a0d0a2d.rlib" "/opt/crater/target/debug/deps/libthreadpool-32952e700cf74c7b.rlib" "/opt/crater/target/debug/deps/libpulse-cd3b84e42c14c3ed.rlib" "/opt/crater/target/debug/deps/libatom-c2e92124b01a4097.rlib" "/opt/crater/target/debug/deps/libmopa-f33c7becb1958f80.rlib" "/opt/crater/target/debug/deps/libtime-2e68d24b63f6d553.rlib" "/opt/crater/target/debug/deps/liblibc-e7a8e468d1534af4.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" "-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-1ba6f2196c43deb9.rlib(backtrace-1ba6f2196c43deb9.backtrace.9yclndco-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-1ba6f2196c43deb9.rlib(backtrace-1ba6f2196c43deb9.backtrace.9yclndco-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" "b5644c92234a84affff13072496d933c8c8a447bdbe31ebaee5a0cf866b015a2"`
[INFO] running `"docker" "rm" "-f" "b5644c92234a84affff13072496d933c8c8a447bdbe31ebaee5a0cf866b015a2"`
[INFO] [stdout] b5644c92234a84affff13072496d933c8c8a447bdbe31ebaee5a0cf866b015a2