[INFO] cloning repository https://github.com/jimblandy/hexes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jimblandy/hexes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Fhexes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Fhexes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d6d5a7a5482b8b8475996b2cb851f76885fb3c7
[INFO] testing jimblandy/hexes against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjimblandy%2Fhexes" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jimblandy/hexes on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jimblandy/hexes
[INFO] finished tweaking git repo https://github.com/jimblandy/hexes
[INFO] tweaked toml for git repo https://github.com/jimblandy/hexes written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/jimblandy/hexes already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gleam v0.2.29
[INFO] [stderr]   Downloaded glium v0.15.0
[INFO] [stderr]   Downloaded glutin v0.6.2
[INFO] [stderr]   Downloaded cgmath v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df7244c6953c6c959384b34f8d6cd4327ec050276f38949f678396a33d18a50c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "df7244c6953c6c959384b34f8d6cd4327ec050276f38949f678396a33d18a50c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df7244c6953c6c959384b34f8d6cd4327ec050276f38949f678396a33d18a50c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df7244c6953c6c959384b34f8d6cd4327ec050276f38949f678396a33d18a50c", kill_on_drop: false }`
[INFO] [stdout] df7244c6953c6c959384b34f8d6cd4327ec050276f38949f678396a33d18a50c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9344b22aecc77a510507d3a3a43ecdb91495149e709544c32831f4cf37add9fd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9344b22aecc77a510507d3a3a43ecdb91495149e709544c32831f4cf37add9fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.18
[INFO] [stderr]    Compiling phf_shared v0.7.20
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling num-traits v0.1.36
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling serde v0.8.21
[INFO] [stderr]    Compiling lazy_static v0.2.2
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling khronos_api v1.0.0
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling lazy_static v0.1.16
[INFO] [stderr]    Compiling crossbeam v0.2.10
[INFO] [stderr]    Compiling gcc v0.3.41
[INFO] [stderr]    Compiling pkg-config v0.3.8
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling cfg-if v0.1.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.3
[INFO] [stderr]    Compiling approx v0.1.1
[INFO] [stderr]    Compiling smallvec v0.1.8
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling xml-rs v0.3.5
[INFO] [stderr]    Compiling phf v0.7.20
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling shared_library v0.1.5
[INFO] [stderr]    Compiling x11-dl v2.12.0
[INFO] [stderr]    Compiling fs2 v0.2.5
[INFO] [stderr]    Compiling backtrace-sys v0.1.5
[INFO] [stderr]    Compiling tempfile v2.1.4
[INFO] [stderr]    Compiling osmesa-sys v0.1.2
[INFO] [stderr]    Compiling memmap v0.2.3
[INFO] [stderr]    Compiling wayland-scanner v0.5.11
[INFO] [stderr]    Compiling gl_generator v0.5.2
[INFO] [stderr]    Compiling phf_generator v0.7.20
[INFO] [stderr]    Compiling phf_codegen v0.7.20
[INFO] [stderr]    Compiling target_build_utils v0.1.2
[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/rustwide/workdir)
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]   --> src/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 | /         /// You can think of the vertices of a hex grid as the union of four
[INFO] [stdout] 62 | |         /// rectangular grids, each of which has a horizontal spacing of three
[INFO] [stdout] 63 | |         /// and a vertical spacing of √3. The bottom bits of the two indices
[INFO] [stdout] 64 | |         /// indicate which grid of the four the given vertex falls on.
[INFO] [stdout]    | |______________________________________________________________________^
[INFO] [stdout] 65 | /         let offset = match (i & 1, j & 1) {
[INFO] [stdout] 66 | |             (0,0) => Vector2::new( 0.0, 0.0),
[INFO] [stdout] 67 | |             (1,0) => Vector2::new( 1.0, 0.0),
[INFO] [stdout] 68 | |             (0,1) => Vector2::new(-0.5, f32::sqrt(3.0) / 2.0),
[INFO] [stdout] 69 | |             (1,1) => Vector2::new( 1.5, f32::sqrt(3.0) / 2.0),
[INFO] [stdout] 70 | |             _ => panic!("unexpected bit pattern")
[INFO] [stdout] 71 | |         };
[INFO] [stdout]    | |__________- rustdoc does not generate documentation for statements
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.hexes.5kgti3j8-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc" "/opt/rustwide/target/debug/deps/hexes-8f1ebec15dcc4cdc.y598l20fsyt4uk5.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libcgmath-23a6c803efbe92a2.rlib" "/opt/rustwide/target/debug/deps/librustc_serialize-7773646ab5fc1c03.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-63f0f1ad7c20e381.rlib" "/opt/rustwide/target/debug/deps/libapprox-a8e85ad9a60368e3.rlib" "/opt/rustwide/target/debug/deps/libglium-024c7f0c8d7d9d01.rlib" "/opt/rustwide/target/debug/deps/libglutin-bbe7537a987952a1.rlib" "/opt/rustwide/target/debug/deps/libwayland_window-2b5ac7b7d1ad635d.rlib" "/opt/rustwide/target/debug/deps/libtempfile-0c9c92c8a12272ff.rlib" "/opt/rustwide/target/debug/deps/librand-3a5f024b2f753d15.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-b75c165152fc07ab.rlib" "/opt/rustwide/target/debug/deps/libwayland_kbd-6afabe7632225357.rlib" "/opt/rustwide/target/debug/deps/libmemmap-6f0bea8ab16a2073.rlib" "/opt/rustwide/target/debug/deps/libosmesa_sys-dc5c4e898d164289.rlib" "/opt/rustwide/target/debug/deps/libwayland_client-1a6eccef59d06dd9.rlib" "/opt/rustwide/target/debug/deps/libwayland_sys-770d42f722745e7b.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-f5e61d18bec33e6d.rlib" "/opt/rustwide/target/debug/deps/libdlib-6d7f9f4aaf858f81.rlib" "/opt/rustwide/target/debug/deps/liblibloading-79882678f9c86f86.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam-51cef307ed8f1cbe.rlib" "/opt/rustwide/target/debug/deps/libbitflags-2660c594cf04f3b5.rlib" "/opt/rustwide/target/debug/deps/libx11_dl-cf6a4aab68a5a0ac.rlib" "/opt/rustwide/target/debug/deps/libshared_library-c11b984dee458296.rlib" "/opt/rustwide/target/debug/deps/libsmallvec-1cc531ca823ecf77.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-8f4a5570e193464c.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-29f737cc3af5cd2d.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-e71d3c01f8ad1f0e.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-167bc1d41d73014a.rlib" "/opt/rustwide/target/debug/deps/libdbghelp-f8300490526c9a2c.rlib" "/opt/rustwide/target/debug/deps/libwinapi-4302359dfd2c100e.rlib" "/opt/rustwide/target/debug/deps/libkernel32-931d226f257ec229.rlib" "/opt/rustwide/target/debug/deps/liblibc-a76d7346d57fec24.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-bb5cd3c8ae54f9d2.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-e12de7683a34c500.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-446a53c2e468675f.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-86fef9fb252a2d33.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-3bed9bfd30304751.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0e38eeb474a7b386.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-a846ed547b824740.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-c9540f0a4fb9265d.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7d2ca66c92c356eb.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-147e2c808f949493.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-bd2a4369506670e9.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74bfdd0ce7d0ed48.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6777f47f1c491841.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-b104f1790174f2be.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-db37898996f45c13.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-25b7435131fc4938.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9d4b6f3c097e876e.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-3f953ad652ab829a.rlib" "-Wl,-Bdynamic" "-ldl" "-ldl" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/libbacktrace-8f4a5570e193464c.rlib(backtrace-8f4a5570e193464c.backtrace.c39azdjz-cgu.12.rcgu.o): in function `backtrace::symbolize::libbacktrace::init_state::{{closure}}':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.2.3/src/symbolize/libbacktrace.rs:150: undefined reference to `backtrace_create_state'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libbacktrace-8f4a5570e193464c.rlib(backtrace-8f4a5570e193464c.backtrace.c39azdjz-cgu.12.rcgu.o): in function `backtrace::symbolize::libbacktrace::resolve':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.2.3/src/symbolize/libbacktrace.rs:167: undefined reference to `backtrace_pcinfo'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.2.3/src/symbolize/libbacktrace.rs:171: undefined reference to `backtrace_syminfo'
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hexes`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "9344b22aecc77a510507d3a3a43ecdb91495149e709544c32831f4cf37add9fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9344b22aecc77a510507d3a3a43ecdb91495149e709544c32831f4cf37add9fd", kill_on_drop: false }`
[INFO] [stdout] 9344b22aecc77a510507d3a3a43ecdb91495149e709544c32831f4cf37add9fd