[INFO] updating cached repository jimblandy/hexes
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jimblandy/hexes
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jimblandy/hexes" "work/ex/beta-1.37-6/sources/1.36.0/gh/jimblandy/hexes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/jimblandy/hexes'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jimblandy/hexes" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jimblandy/hexes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jimblandy/hexes'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 2d6d5a7a5482b8b8475996b2cb851f76885fb3c7
[INFO] sha for GitHub repo jimblandy/hexes: 2d6d5a7a5482b8b8475996b2cb851f76885fb3c7
[INFO] validating manifest of jimblandy/hexes 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 jimblandy/hexes 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 jimblandy/hexes
[INFO] finished frobbing jimblandy/hexes
[INFO] frobbed toml for jimblandy/hexes written to work/ex/beta-1.37-6/sources/1.36.0/gh/jimblandy/hexes/Cargo.toml
[INFO] started frobbing jimblandy/hexes
[INFO] finished frobbing jimblandy/hexes
[INFO] frobbed toml for jimblandy/hexes written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jimblandy/hexes/Cargo.toml
[INFO] crate jimblandy/hexes 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 jimblandy/hexes against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/jimblandy/hexes:/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" "+beta-2019-07-23" "build" "--frozen"`
[INFO] [stdout] a5bc8c75e324a5b6a22f6f741dcf0dbe9eaf55b0d2ac234dcd9869f68f899060
[INFO] running `"docker" "start" "-a" "a5bc8c75e324a5b6a22f6f741dcf0dbe9eaf55b0d2ac234dcd9869f68f899060"`
[INFO] [stderr]    Compiling phf_shared v0.7.20
[INFO] [stderr]    Compiling serde v0.8.21
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling gcc v0.3.41
[INFO] [stderr]    Compiling khronos_api v1.0.0
[INFO] [stderr]    Compiling crossbeam v0.2.10
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling xml-rs v0.3.5
[INFO] [stderr]    Compiling x11-dl v2.12.0
[INFO] [stderr]    Compiling shared_library v0.1.5
[INFO] [stderr]    Compiling phf_generator v0.7.20
[INFO] [stderr]    Compiling phf v0.7.20
[INFO] [stderr]    Compiling tempfile v2.1.4
[INFO] [stderr]    Compiling phf_codegen v0.7.20
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling target_build_utils v0.1.2
[INFO] [stderr]    Compiling memmap v0.2.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling wayland-scanner v0.5.11
[INFO] [stderr]    Compiling gl_generator v0.5.2
[INFO] [stderr]    Compiling wayland-client v0.5.12
[INFO] [stderr]    Compiling glutin v0.6.2
[INFO] [stderr]    Compiling glium v0.15.0
[INFO] [stderr]    Compiling serde_json v0.8.4
[INFO] [stderr]    Compiling cgmath v0.12.0
[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 hexes v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]   --> src/main.rs:61:9
[INFO] [stderr]    |
[INFO] [stderr] 61 | /         /// You can think of the vertices of a hex grid as the union of four
[INFO] [stderr] 62 | |         /// rectangular grids, each of which has a horizontal spacing of three
[INFO] [stderr] 63 | |         /// and a vertical spacing of √3. The bottom bits of the two indices
[INFO] [stderr] 64 | |         /// indicate which grid of the four the given vertex falls on.
[INFO] [stderr]    | |______________________________________________________________________^
[INFO] [stderr] 65 | /         let offset = match (i & 1, j & 1) {
[INFO] [stderr] 66 | |             (0,0) => Vector2::new( 0.0, 0.0),
[INFO] [stderr] 67 | |             (1,0) => Vector2::new( 1.0, 0.0),
[INFO] [stderr] 68 | |             (0,1) => Vector2::new(-0.5, f32::sqrt(3.0) / 2.0),
[INFO] [stderr] 69 | |             (1,1) => Vector2::new( 1.5, f32::sqrt(3.0) / 2.0),
[INFO] [stderr] 70 | |             _ => panic!("unexpected bit pattern")
[INFO] [stderr] 71 | |         };
[INFO] [stderr]    | |__________- rustdoc does not generate documentation for statements
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_doc_comments)] 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/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.hexes.8svobzkv-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad" "/opt/crater/target/debug/deps/hexes-bb1d581dc28347ad.29m9nf2ai1as3rfx.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libcgmath-360148cc6e6dbfd6.rlib" "/opt/crater/target/debug/deps/librustc_serialize-788fa727d6d1b52d.rlib" "/opt/crater/target/debug/deps/libnum_traits-45b07fd770ac50a5.rlib" "/opt/crater/target/debug/deps/libapprox-ecf5281917ee9778.rlib" "/opt/crater/target/debug/deps/libglium-93f8b165c3f5c693.rlib" "/opt/crater/target/debug/deps/libglutin-c690250a2fac7020.rlib" "/opt/crater/target/debug/deps/libwayland_window-685725db0dda98b6.rlib" "/opt/crater/target/debug/deps/libtempfile-c2e30bec52dc580b.rlib" "/opt/crater/target/debug/deps/librand-d6cdb6aa01ee7a70.rlib" "/opt/crater/target/debug/deps/libbyteorder-22baa336c5b59722.rlib" "/opt/crater/target/debug/deps/libwayland_kbd-31d670656b6db9c4.rlib" "/opt/crater/target/debug/deps/libmemmap-732b1359c612d963.rlib" "/opt/crater/target/debug/deps/libosmesa_sys-2302d654838e8d19.rlib" "/opt/crater/target/debug/deps/libwayland_client-811e8fba6b4d367b.rlib" "/opt/crater/target/debug/deps/libwayland_sys-19c459133c8a6ca9.rlib" "/opt/crater/target/debug/deps/liblazy_static-f0ae2b35d74e16dd.rlib" "/opt/crater/target/debug/deps/libdlib-378ee97c62f0bc26.rlib" "/opt/crater/target/debug/deps/liblibloading-af69df8af4efe5f4.rlib" "/opt/crater/target/debug/deps/libcrossbeam-727cb0fddca831d2.rlib" "/opt/crater/target/debug/deps/libbitflags-e424d0a7dda42873.rlib" "/opt/crater/target/debug/deps/libx11_dl-bc63ed6e6de4e17c.rlib" "/opt/crater/target/debug/deps/libshared_library-90cd416922125a1d.rlib" "/opt/crater/target/debug/deps/libsmallvec-d5983406a4a9d722.rlib" "/opt/crater/target/debug/deps/libbacktrace-8dbab0854e034857.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-b76d80dd251fefef.rlib" "/opt/crater/target/debug/deps/librustc_demangle-7e1e84fc0d2949f5.rlib" "/opt/crater/target/debug/deps/libcfg_if-e3a657be82e73c34.rlib" "/opt/crater/target/debug/deps/libdbghelp-610e6a484d3f70b3.rlib" "/opt/crater/target/debug/deps/libwinapi-387a29eb28388c06.rlib" "/opt/crater/target/debug/deps/libkernel32-f16f9b42bdd87fed.rlib" "/opt/crater/target/debug/deps/liblibc-1466dc2378834e22.rlib" "/opt/crater/target/debug/deps/liblazy_static-324b27031227093c.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-a80a1e8e09cafef8.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e0e6351da805c468.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-e04f54bafc95e331.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-67901d3322495bd5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-bd390b1abaceaec1.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-312dd37fdc7bedfc.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-8ed0e51d58d644a3.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-8a423c320a6c707f.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d6a95598e2238263.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d231614b153016eb.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-3821619027f463e4.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-1cfd794d18771a44.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-dcf33cf10c2452ef.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-07-23-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-c258fea34bf64bce.rlib" "-Wl,-Bdynamic" "-ldl" "-ldl" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /opt/crater/target/debug/deps/libbacktrace-8dbab0854e034857.rlib(backtrace-8dbab0854e034857.backtrace.c3vl8oqh-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-8dbab0854e034857.rlib(backtrace-8dbab0854e034857.backtrace.c3vl8oqh-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 `hexes`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "a5bc8c75e324a5b6a22f6f741dcf0dbe9eaf55b0d2ac234dcd9869f68f899060"`
[INFO] running `"docker" "rm" "-f" "a5bc8c75e324a5b6a22f6f741dcf0dbe9eaf55b0d2ac234dcd9869f68f899060"`
[INFO] [stdout] a5bc8c75e324a5b6a22f6f741dcf0dbe9eaf55b0d2ac234dcd9869f68f899060