[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-1.38-1/sources/1.37.0/gh/jimblandy/hexes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jimblandy/hexes'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jimblandy/hexes" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jimblandy/hexes"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jimblandy/hexes 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 jimblandy/hexes
[INFO] finished frobbing jimblandy/hexes
[INFO] frobbed toml for jimblandy/hexes written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/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" "+1.37.0" "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 jimblandy/hexes against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 704646a813ec71a02c32ff04c4d90dbad0a217fd30e8f45894fb53d8699d094a
[INFO] running `"docker" "start" "-a" "704646a813ec71a02c32ff04c4d90dbad0a217fd30e8f45894fb53d8699d094a"`
[INFO] [stderr]    Compiling phf_shared v0.7.20
[INFO] [stderr]    Compiling serde v0.8.21
[INFO] [stderr]    Compiling khronos_api v1.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.8
[INFO] [stderr]    Compiling gcc v0.3.41
[INFO] [stderr]    Compiling crossbeam v0.2.10
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]    Compiling smallvec v0.1.8
[INFO] [stderr]    Compiling xml-rs v0.3.5
[INFO] [stderr]    Compiling shared_library v0.1.5
[INFO] [stderr]    Compiling phf v0.7.20
[INFO] [stderr]    Compiling phf_generator v0.7.20
[INFO] [stderr]    Compiling cgmath v0.12.0
[INFO] [stderr]    Compiling tempfile v2.1.4
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling phf_codegen v0.7.20
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling target_build_utils v0.1.2
[INFO] [stderr]    Compiling memmap v0.2.3
[INFO] [stderr]    Compiling x11-dl v2.12.0
[INFO] [stderr]    Compiling wayland-scanner v0.5.11
[INFO] [stderr]    Compiling gl_generator v0.5.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling backtrace v0.2.3
[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 libloading v0.3.1
[INFO] [stderr]    Compiling dlib v0.3.1
[INFO] [stderr]    Compiling wayland-sys v0.5.11
[INFO] [stderr]    Compiling wayland-window v0.2.3
[INFO] [stderr]    Compiling wayland-kbd v0.3.6
[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-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.hexes.cq3w33e6-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9" "/opt/crater/target/debug/deps/hexes-c4ecbab768bb8dc9.241bmzsycnw33rq1.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libcgmath-2122013103ed693e.rlib" "/opt/crater/target/debug/deps/librustc_serialize-9d882fed622c6e9e.rlib" "/opt/crater/target/debug/deps/libnum_traits-cf072775152a8823.rlib" "/opt/crater/target/debug/deps/libapprox-979a4cb7f16d22ee.rlib" "/opt/crater/target/debug/deps/libglium-9010b7950f84a7bf.rlib" "/opt/crater/target/debug/deps/libglutin-73c5ac5ad648a418.rlib" "/opt/crater/target/debug/deps/libwayland_window-dd562049b3f0f7e7.rlib" "/opt/crater/target/debug/deps/libtempfile-7338b3fba3ad0f3d.rlib" "/opt/crater/target/debug/deps/librand-3155e97dc819178f.rlib" "/opt/crater/target/debug/deps/libbyteorder-28a061140ed2d54c.rlib" "/opt/crater/target/debug/deps/libwayland_kbd-189e6505f765f97c.rlib" "/opt/crater/target/debug/deps/libmemmap-2492456ab0a65515.rlib" "/opt/crater/target/debug/deps/libosmesa_sys-816e588e7069bbde.rlib" "/opt/crater/target/debug/deps/libwayland_client-05eb405c96d65fb4.rlib" "/opt/crater/target/debug/deps/libwayland_sys-dfde02b3e75e6316.rlib" "/opt/crater/target/debug/deps/liblazy_static-c329193024da829b.rlib" "/opt/crater/target/debug/deps/libdlib-8141563291417026.rlib" "/opt/crater/target/debug/deps/liblibloading-d2ff06284c825b46.rlib" "/opt/crater/target/debug/deps/libcrossbeam-c53389e74d4c495f.rlib" "/opt/crater/target/debug/deps/libbitflags-b03ee8d07369378c.rlib" "/opt/crater/target/debug/deps/libx11_dl-2a18a7ad63d7f6f1.rlib" "/opt/crater/target/debug/deps/libshared_library-f0d3def2bfcec41e.rlib" "/opt/crater/target/debug/deps/libsmallvec-7c0ac661bdd99f33.rlib" "/opt/crater/target/debug/deps/libbacktrace-b39dc796e3b92101.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-315df5075a6772b7.rlib" "/opt/crater/target/debug/deps/librustc_demangle-a63e03c53d847d30.rlib" "/opt/crater/target/debug/deps/libcfg_if-e594ac7fa20b1aa3.rlib" "/opt/crater/target/debug/deps/libdbghelp-d860676abe2fb31b.rlib" "/opt/crater/target/debug/deps/libwinapi-be47d272a993a950.rlib" "/opt/crater/target/debug/deps/libkernel32-ed10b6f453a27092.rlib" "/opt/crater/target/debug/deps/liblibc-a442291025725117.rlib" "/opt/crater/target/debug/deps/liblazy_static-5b3a6350224c4bac.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1d6d86bd078a28e9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e9721e46a424e2a9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-c07193698f282147.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6da45690f3863086.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-690797036dd27680.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d3896ccbfd8eda2b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7cccc3739e3d7623.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5e9ba178a513cd29.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-5ca9f83bf63d1f4b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-bba1c7ef9e950882.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-e23c9de62012deb5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9b59dffdcd513d5d.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-17392340ab2e4a97.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-ac21508a81e3f7f3.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-b39dc796e3b92101.rlib(backtrace-b39dc796e3b92101.backtrace.75shhv66-cgu.5.rcgu.o): In function `backtrace::symbolize::libbacktrace::init_state::{{closure}}':
[INFO] [stderr]           /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.2.3/src/symbolize/libbacktrace.rs:150: undefined reference to `backtrace_create_state'
[INFO] [stderr]           /opt/crater/target/debug/deps/libbacktrace-b39dc796e3b92101.rlib(backtrace-b39dc796e3b92101.backtrace.75shhv66-cgu.5.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" "704646a813ec71a02c32ff04c4d90dbad0a217fd30e8f45894fb53d8699d094a"`
[INFO] running `"docker" "rm" "-f" "704646a813ec71a02c32ff04c4d90dbad0a217fd30e8f45894fb53d8699d094a"`
[INFO] [stdout] 704646a813ec71a02c32ff04c4d90dbad0a217fd30e8f45894fb53d8699d094a