[INFO] crate vdf-cli 0.1.0 is already in cache
[INFO] extracting crate vdf-cli 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/vdf-cli/0.1.0
[INFO] extracting crate vdf-cli 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vdf-cli/0.1.0
[INFO] validating manifest of vdf-cli-0.1.0 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 vdf-cli-0.1.0 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 vdf-cli-0.1.0
[INFO] finished frobbing vdf-cli-0.1.0
[INFO] frobbed toml for vdf-cli-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/vdf-cli/0.1.0/Cargo.toml
[INFO] started frobbing vdf-cli-0.1.0
[INFO] finished frobbing vdf-cli-0.1.0
[INFO] frobbed toml for vdf-cli-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/vdf-cli/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 vdf-cli-0.1.0 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/vdf-cli/0.1.0:/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] 8c532415b2dac9f1d1f097bccceac0357b3487fbac2b561a6f69f34fe360e174
[INFO] running `"docker" "start" "-a" "8c532415b2dac9f1d1f097bccceac0357b3487fbac2b561a6f69f34fe360e174"`
[INFO] [stderr]    Compiling vdf v0.1.0
[INFO] [stderr]    Compiling classgroup v0.1.0
[INFO] [stderr]    Compiling vdf-cli v0.1.0 (/opt/crater/workdir)
[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/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.vdf_cli.55i8wpkt-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38" "/opt/crater/target/debug/deps/vdf_cli-d1aa466f0feadd38.4a7nr7rsvj5brb4j.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-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/libvdf-a0680398bdd303fd.rlib" "/opt/crater/target/debug/deps/libsha2-e89b19dd48fbb181.rlib" "/opt/crater/target/debug/deps/libdigest-fec3093eb5607e70.rlib" "/opt/crater/target/debug/deps/libopaque_debug-255025b57567df48.rlib" "/opt/crater/target/debug/deps/libfake_simd-9a7a25a362cdb1bc.rlib" "/opt/crater/target/debug/deps/libblock_buffer-444b6ae2c940354a.rlib" "/opt/crater/target/debug/deps/libgeneric_array-b922dedc9fc93200.rlib" "/opt/crater/target/debug/deps/libtypenum-49005c187b93bc71.rlib" "/opt/crater/target/debug/deps/libblock_padding-370e4db4f9b1dfea.rlib" "/opt/crater/target/debug/deps/libbyte_tools-c381564ad523d754.rlib" "/opt/crater/target/debug/deps/libbyteorder-9976fe9ec528de8f.rlib" "/opt/crater/target/debug/deps/libclassgroup-9c7d0061677cf67b.rlib" "/opt/crater/target/debug/deps/libnum_traits-d11dcc7883adaecb.rlib" "/opt/crater/target/debug/deps/libhex-979204dee82ccb65.rlib" "/opt/crater/target/debug/deps/libclap-9325301b67a3eb11.rlib" "/opt/crater/target/debug/deps/libvec_map-d1ee0a45638c2bc7.rlib" "/opt/crater/target/debug/deps/libtextwrap-98d6d8750638b4d6.rlib" "/opt/crater/target/debug/deps/libunicode_width-70ef077428dd4d3c.rlib" "/opt/crater/target/debug/deps/libstrsim-7aece6a3d121dad3.rlib" "/opt/crater/target/debug/deps/libbitflags-bcd34e8f74846360.rlib" "/opt/crater/target/debug/deps/libatty-eb5da56e70a939cc.rlib" "/opt/crater/target/debug/deps/liblibc-d019039477cac03b.rlib" "/opt/crater/target/debug/deps/libansi_term-ab3d266e25626249.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" "-lgmp" "-lgmp" "-lgmp" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lgmp
[INFO] [stderr]           /usr/bin/ld: cannot find -lgmp
[INFO] [stderr]           /usr/bin/ld: cannot find -lgmp
[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 `vdf-cli`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8c532415b2dac9f1d1f097bccceac0357b3487fbac2b561a6f69f34fe360e174"`
[INFO] running `"docker" "rm" "-f" "8c532415b2dac9f1d1f097bccceac0357b3487fbac2b561a6f69f34fe360e174"`
[INFO] [stdout] 8c532415b2dac9f1d1f097bccceac0357b3487fbac2b561a6f69f34fe360e174