[INFO] crate verne 0.1.0 is already in cache
[INFO] extracting crate verne 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/verne/0.1.0
[INFO] extracting crate verne 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/verne/0.1.0
[INFO] validating manifest of verne-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 verne-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 verne-0.1.0
[INFO] finished frobbing verne-0.1.0
[INFO] frobbed toml for verne-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/verne/0.1.0/Cargo.toml
[INFO] started frobbing verne-0.1.0
[INFO] finished frobbing verne-0.1.0
[INFO] frobbed toml for verne-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/verne/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 verne-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/verne/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] e9c49b87f9146ab91de94e4bc9b657a33e75c0ef63f0878d368c1f8746477db6
[INFO] running `"docker" "start" "-a" "e9c49b87f9146ab91de94e4bc9b657a33e75c0ef63f0878d368c1f8746477db6"`
[INFO] [stderr]    Compiling virt v0.2.10
[INFO] [stderr]    Compiling verne v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `memory`
[INFO] [stderr]   --> src/libvirt.rs:55:22
[INFO] [stderr]    |
[INFO] [stderr] 55 |                  ref memory,
[INFO] [stderr]    |                  ----^^^^^^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: try ignoring the field: `memory: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vcpus`
[INFO] [stderr]   --> src/libvirt.rs:54:22
[INFO] [stderr]    |
[INFO] [stderr] 54 |                  ref vcpus,
[INFO] [stderr]    |                  ----^^^^^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: try ignoring the field: `vcpus: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/libvirt.rs:124:17
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 dom.destroy();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/libvirt.rs:126:21
[INFO] [stderr]     |
[INFO] [stderr] 126 |                     dom.undefine();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/libvirt.rs:128:17
[INFO] [stderr]     |
[INFO] [stderr] 128 |                 dom.free();
[INFO] [stderr]     |                 ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[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/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.verne.6rhgev2m-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b" "/opt/crater/target/debug/deps/verne-80b9cbeb16a8239b.573j58wf33n2eo0t.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/libverne-8ed1c30bf88bc109.rlib" "/opt/crater/target/debug/deps/libvirt-86d35795a7ad7359.rlib" "/opt/crater/target/debug/deps/liblibc-d019039477cac03b.rlib" "/opt/crater/target/debug/deps/libyaml_rust-c79c5c8050dad054.rlib" "/opt/crater/target/debug/deps/libgetopts-75f4d5abb7d210a3.rlib" "/opt/crater/target/debug/deps/libunicode_width-70ef077428dd4d3c.rlib" "/opt/crater/target/debug/deps/libenv_logger-41fe8bcbdd9be237.rlib" "/opt/crater/target/debug/deps/libregex-f3537a25ca3dbe43.rlib" "/opt/crater/target/debug/deps/libutf8_ranges-2228619ed4752127.rlib" "/opt/crater/target/debug/deps/libregex_syntax-4a864c3631515518.rlib" "/opt/crater/target/debug/deps/libucd_util-8b770cc8b020bfb6.rlib" "/opt/crater/target/debug/deps/libthread_local-1801494cfc15e4c0.rlib" "/opt/crater/target/debug/deps/liblazy_static-eb33edc716f69401.rlib" "/opt/crater/target/debug/deps/libaho_corasick-7bf91ee903c0fa71.rlib" "/opt/crater/target/debug/deps/libmemchr-5970d48417368191.rlib" "/opt/crater/target/debug/deps/liblog-5ad476e9af8f39be.rlib" "/opt/crater/target/debug/deps/liblog-55cfa8f7ed258bff.rlib" "/opt/crater/target/debug/deps/libcfg_if-3028bdd7b8e15bb5.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" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lvirt
[INFO] [stderr]           /usr/bin/ld: cannot find -lvirt
[INFO] [stderr]           /usr/bin/ld: cannot find -lvirt
[INFO] [stderr]           /usr/bin/ld: cannot find -lvirt
[INFO] [stderr]           /usr/bin/ld: cannot find -lvirt
[INFO] [stderr]           /usr/bin/ld: cannot find -lvirt
[INFO] [stderr]           /usr/bin/ld: cannot find -lvirt
[INFO] [stderr]           /usr/bin/ld: cannot find -lvirt
[INFO] [stderr]           /usr/bin/ld: cannot find -lvirt
[INFO] [stderr]           /usr/bin/ld: cannot find -lvirt
[INFO] [stderr]           /usr/bin/ld: cannot find -lvirt
[INFO] [stderr]           /usr/bin/ld: cannot find -lvirt
[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 `verne`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e9c49b87f9146ab91de94e4bc9b657a33e75c0ef63f0878d368c1f8746477db6"`
[INFO] running `"docker" "rm" "-f" "e9c49b87f9146ab91de94e4bc9b657a33e75c0ef63f0878d368c1f8746477db6"`
[INFO] [stdout] e9c49b87f9146ab91de94e4bc9b657a33e75c0ef63f0878d368c1f8746477db6