[INFO] fetching crate verne 0.1.0...
[INFO] testing verne-0.1.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate verne 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate verne 0.1.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate verne 0.1.0
[INFO] finished tweaking crates.io crate verne 0.1.0
[INFO] tweaked toml for crates.io crate verne 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2300130573c0cf1706d8882ac2a6b7bf7beb681b075277d9567357b164b532cb
[INFO] running `Command { std: "docker" "start" "-a" "2300130573c0cf1706d8882ac2a6b7bf7beb681b075277d9567357b164b532cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2300130573c0cf1706d8882ac2a6b7bf7beb681b075277d9567357b164b532cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2300130573c0cf1706d8882ac2a6b7bf7beb681b075277d9567357b164b532cb", kill_on_drop: false }`
[INFO] [stdout] 2300130573c0cf1706d8882ac2a6b7bf7beb681b075277d9567357b164b532cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e81130ce092fca1c558507b95bc33b5eb582e6b17714b8cc67a499959af644a
[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" "4e81130ce092fca1c558507b95bc33b5eb582e6b17714b8cc67a499959af644a", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling virt v0.2.11
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling verne v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `vcpus`
[INFO] [stdout]   --> src/libvirt.rs:54:18
[INFO] [stdout]    |
[INFO] [stdout] 54 |                  ref vcpus,
[INFO] [stdout]    |                  ^^^^^^^^^ help: try ignoring the field: `vcpus: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `memory`
[INFO] [stdout]   --> src/libvirt.rs:55:18
[INFO] [stdout]    |
[INFO] [stdout] 55 |                  ref memory,
[INFO] [stdout]    |                  ^^^^^^^^^^ help: try ignoring the field: `memory: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/libvirt.rs:124:17
[INFO] [stdout]     |
[INFO] [stdout] 124 |                 dom.destroy();
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/libvirt.rs:126:21
[INFO] [stdout]     |
[INFO] [stdout] 126 |                     dom.undefine();
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/libvirt.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |                 dom.free();
[INFO] [stdout]     |                 ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `verne`.
[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/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.verne.cz01bpso-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5" "/opt/rustwide/target/debug/deps/verne-34b84c38123f91c5.135he3i44thoruaq.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libverne-53ee48426a4136b7.rlib" "/opt/rustwide/target/debug/deps/libvirt-462f3e306c6056c0.rlib" "/opt/rustwide/target/debug/deps/liblibc-0a43f320b0d2a047.rlib" "/opt/rustwide/target/debug/deps/libyaml_rust-0a1a4c44cc852a12.rlib" "/opt/rustwide/target/debug/deps/libgetopts-499d2cd53cd50fea.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-0465a15c15895916.rlib" "/opt/rustwide/target/debug/deps/libenv_logger-414a68e644a69f7b.rlib" "/opt/rustwide/target/debug/deps/libregex-cc96f8327fbdb7f2.rlib" "/opt/rustwide/target/debug/deps/libutf8_ranges-805d9c1681c9246e.rlib" "/opt/rustwide/target/debug/deps/libregex_syntax-a7fb55e8889bf5d1.rlib" "/opt/rustwide/target/debug/deps/libucd_util-940bd24237eb7b69.rlib" "/opt/rustwide/target/debug/deps/libthread_local-0356c0b19aac269d.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-bf21cfb31a9e28ca.rlib" "/opt/rustwide/target/debug/deps/libaho_corasick-d270083774706e94.rlib" "/opt/rustwide/target/debug/deps/libmemchr-5091b8a8b150be5a.rlib" "/opt/rustwide/target/debug/deps/liblog-382de7997eb53c26.rlib" "/opt/rustwide/target/debug/deps/liblog-c0aac21270a44eb0.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-d2033c938d1688fd.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-f14aca24435a5414.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-48d342a8b48d1d01.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-14bc0820888c8eb3.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9cbd9e217bff06bc.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-31826136df98934e.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-075976a117c8fd5d.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-2d5cbedfbf17a011.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-0474372ff08c5319.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d437c34460d2315a.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-fb61ed1b8cc4de79.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-bf76d1b643bfc9f0.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-a1b53aa7fddcf418.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-28585e57fac45c73.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-64801769bc15ab28.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-541997b56bb98660.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-cdea3c81adab3d12.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-cd9f15a39fb65cbc.rlib" "-Wl,-Bdynamic" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           /usr/bin/ld: cannot find -lvirt
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "4e81130ce092fca1c558507b95bc33b5eb582e6b17714b8cc67a499959af644a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e81130ce092fca1c558507b95bc33b5eb582e6b17714b8cc67a499959af644a", kill_on_drop: false }`
[INFO] [stdout] 4e81130ce092fca1c558507b95bc33b5eb582e6b17714b8cc67a499959af644a
