[INFO] fetching crate verne 0.1.0...
[INFO] testing verne-0.1.0 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] extracting crate verne 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate verne 0.1.0 on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yaml-rust v0.3.5
[INFO] [stderr]   Downloaded getopts v0.2.21
[INFO] [stderr]   Downloaded virt v0.2.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "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] cab102b153ddbf03c45686f96afa31b6677b8a30da158eb2f1ca5bd7913d0b53
[INFO] running `Command { std: "docker" "start" "-a" "cab102b153ddbf03c45686f96afa31b6677b8a30da158eb2f1ca5bd7913d0b53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cab102b153ddbf03c45686f96afa31b6677b8a30da158eb2f1ca5bd7913d0b53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cab102b153ddbf03c45686f96afa31b6677b8a30da158eb2f1ca5bd7913d0b53", kill_on_drop: false }`
[INFO] [stdout] cab102b153ddbf03c45686f96afa31b6677b8a30da158eb2f1ca5bd7913d0b53
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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=forbid" "-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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 308f8498bd9c6d6512d6f2fc45e7c3e6b502d271d27818b40086dae9386dad1e
[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" "308f8498bd9c6d6512d6f2fc45e7c3e6b502d271d27818b40086dae9386dad1e", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling lazy_static v1.4.0
[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 yaml-rust v0.3.5
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling virt 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] [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/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.verne.er6bx81o-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871" "/opt/rustwide/target/debug/deps/verne-b077eb54e2a33871.1n91jll7qsy5rr6q.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libverne-07b9670db24c2d41.rlib" "/opt/rustwide/target/debug/deps/libvirt-6c8989fc75d4e26d.rlib" "/opt/rustwide/target/debug/deps/liblibc-e41c2d10207ee17e.rlib" "/opt/rustwide/target/debug/deps/libyaml_rust-60b766862fb93b03.rlib" "/opt/rustwide/target/debug/deps/libgetopts-673bab5105de3b6b.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-85f6c02835e49e35.rlib" "/opt/rustwide/target/debug/deps/libenv_logger-4e36c98f933cb442.rlib" "/opt/rustwide/target/debug/deps/libregex-d69eaa902db6ebc1.rlib" "/opt/rustwide/target/debug/deps/libutf8_ranges-841a110f0c68c0a7.rlib" "/opt/rustwide/target/debug/deps/libregex_syntax-ede8b7039525cbff.rlib" "/opt/rustwide/target/debug/deps/libucd_util-76bd27fc44249fe3.rlib" "/opt/rustwide/target/debug/deps/libthread_local-818aeac3d8830f5b.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-cd2401a06b1676f6.rlib" "/opt/rustwide/target/debug/deps/libaho_corasick-42424817a1197746.rlib" "/opt/rustwide/target/debug/deps/libmemchr-be6b403c037c6622.rlib" "/opt/rustwide/target/debug/deps/liblog-52380cf0a073a9b0.rlib" "/opt/rustwide/target/debug/deps/liblog-4bf1047162af990b.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-4c6be1962c556cf0.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-c659455244c9d2ca.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-448643d99e633b5d.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-c7c3d631a525883a.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-d7659a11bb201e01.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-9aceb6f83a33a9b6.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-876c3057c8a2a7c2.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-2f02aa3e24d2aa49.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-1d4694108f8cb543.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-79eaa6e630880f50.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-0df1a4ec96f80cf7.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-bba9b0f0f4d77257.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-f848f9c987265235.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-0d5ea4f2d39b8e27.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-c22053fa5fc00a3b.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-c52e5d6301e1bd59.rlib" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2675a9a46b5cec89.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/eafdee2dfae8c2233b74f98b123308be7ccefcc6/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-6e3d052afeb9f711.rlib" "-Wl,-Bdynamic" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[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] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `verne`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "308f8498bd9c6d6512d6f2fc45e7c3e6b502d271d27818b40086dae9386dad1e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "308f8498bd9c6d6512d6f2fc45e7c3e6b502d271d27818b40086dae9386dad1e", kill_on_drop: false }`
[INFO] [stdout] 308f8498bd9c6d6512d6f2fc45e7c3e6b502d271d27818b40086dae9386dad1e