[INFO] fetching crate verne 0.1.0...
[INFO] testing verne-0.1.0 against 1.59.0 for beta-1.60-1
[INFO] extracting crate verne 0.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate verne 0.1.0 on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 79a931bbd51d3399658389ff2c9d190a24526f66b4ce04b34fae6706990e4b33
[INFO] running `Command { std: "docker" "start" "-a" "79a931bbd51d3399658389ff2c9d190a24526f66b4ce04b34fae6706990e4b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "79a931bbd51d3399658389ff2c9d190a24526f66b4ce04b34fae6706990e4b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79a931bbd51d3399658389ff2c9d190a24526f66b4ce04b34fae6706990e4b33", kill_on_drop: false }`
[INFO] [stdout] 79a931bbd51d3399658389ff2c9d190a24526f66b4ce04b34fae6706990e4b33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a0e17a9211b7e6705c7039fa4eb2c3d755cf231e25507de345d6c2e2c4e8ae9
[INFO] running `Command { std: "docker" "start" "-a" "7a0e17a9211b7e6705c7039fa4eb2c3d755cf231e25507de345d6c2e2c4e8ae9", kill_on_drop: false }`
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling virt v0.2.11
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[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 `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 `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 `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] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/main.rs:69:26
[INFO] [stdout]    |
[INFO] [stdout] 69 |         Err(f) => panic!(f.to_string()),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this usage of panic!() is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to Display the message
[INFO] [stdout]    |
[INFO] [stdout] 69 |         Err(f) => panic!("{}", f.to_string()),
[INFO] [stdout]    |                          +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.verne.ba630fdd-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c.28b7r46ubk0v73fe.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libverne-37fa0c774d05a036.rlib" "/opt/rustwide/target/debug/deps/libvirt-074579724533147a.rlib" "/opt/rustwide/target/debug/deps/liblibc-0df115c6f3232b87.rlib" "/opt/rustwide/target/debug/deps/libyaml_rust-756aaf5ef7645097.rlib" "/opt/rustwide/target/debug/deps/libgetopts-2e906e282cc6f4bc.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-ac1a159ed0d379b9.rlib" "/opt/rustwide/target/debug/deps/libenv_logger-f7ab8696cb061654.rlib" "/opt/rustwide/target/debug/deps/libregex-6584021899b53995.rlib" "/opt/rustwide/target/debug/deps/libutf8_ranges-34c68233ff3cded3.rlib" "/opt/rustwide/target/debug/deps/libregex_syntax-05106d91ffb668bd.rlib" "/opt/rustwide/target/debug/deps/libucd_util-f6ebd7ea0b0c6012.rlib" "/opt/rustwide/target/debug/deps/libthread_local-fa0752fdfa02d05b.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-02ff0d0fbc57b9b4.rlib" "/opt/rustwide/target/debug/deps/libaho_corasick-3d236d9a79bb1941.rlib" "/opt/rustwide/target/debug/deps/libmemchr-bc7103d2fd7c9396.rlib" "/opt/rustwide/target/debug/deps/liblog-b62f90e703510ef5.rlib" "/opt/rustwide/target/debug/deps/liblog-29a347dd5dbcecec.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-0a04e74fc4f21d18.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-a46a068050a12a4b.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-1df56095db9453cb.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-9062de483386e50b.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-b988ab269ff13602.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-1bc822d886d4f7bd.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-963eca8df4c224a6.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-d805b480c9102e58.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-06dfdbc22b935051.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-d7523a4d118e6572.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-5d7898c7fac3a07d.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-8c2bdbab4845bf3d.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-d578639df0547b30.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-58bbb7b1efa3a5e2.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-4c9b082d197c16f8.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-70f9ed6d8e7a5ce6.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-8c0a241d0360fa53.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-bad7ed93fdd31371.rlib" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-98b4d121af2b7335.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-1d9f7e5920635d15.rlib" "-Wl,-Bdynamic" "-lvirt" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.59.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/verne-f6b5ea929812e05c" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lvirt
[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 `verne` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "7a0e17a9211b7e6705c7039fa4eb2c3d755cf231e25507de345d6c2e2c4e8ae9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a0e17a9211b7e6705c7039fa4eb2c3d755cf231e25507de345d6c2e2c4e8ae9", kill_on_drop: false }`
[INFO] [stdout] 7a0e17a9211b7e6705c7039fa4eb2c3d755cf231e25507de345d6c2e2c4e8ae9