[INFO] crate verne 0.1.0 is already in cache
[INFO] testing verne-0.1.0 against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[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 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "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" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f32796292b42f0d5fbb53dc3c5b1704ebb6d1c4dee9fd6b4d4dd838b1271f475
[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" "f32796292b42f0d5fbb53dc3c5b1704ebb6d1c4dee9fd6b4d4dd838b1271f475", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f32796292b42f0d5fbb53dc3c5b1704ebb6d1c4dee9fd6b4d4dd838b1271f475", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f32796292b42f0d5fbb53dc3c5b1704ebb6d1c4dee9fd6b4d4dd838b1271f475", kill_on_drop: false }`
[INFO] [stdout] f32796292b42f0d5fbb53dc3c5b1704ebb6d1c4dee9fd6b4d4dd838b1271f475
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 20f309fbafdd97e9443b1369db5f69ef8e952a9afbdbb67b1f45d69ac3e9481e
[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" "20f309fbafdd97e9443b1369db5f69ef8e952a9afbdbb67b1f45d69ac3e9481e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling utf8-ranges v1.0.4
[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 thread_local v0.3.6
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[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/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.verne.6yb5tq3r-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260" "/opt/rustwide/target/debug/deps/verne-acd7ec79d4f13260.1gbs48t99haq6udu.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libverne-3ddbb9b6fd8c730e.rlib" "/opt/rustwide/target/debug/deps/libvirt-d55e33018b75edd9.rlib" "/opt/rustwide/target/debug/deps/liblibc-e834449672905d13.rlib" "/opt/rustwide/target/debug/deps/libyaml_rust-d340abc0cce2fb88.rlib" "/opt/rustwide/target/debug/deps/libgetopts-b8a8feb027e6d7a9.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-4f447c2431100104.rlib" "/opt/rustwide/target/debug/deps/libenv_logger-c00850ed7289b249.rlib" "/opt/rustwide/target/debug/deps/libregex-cf1e4e7c297aa42d.rlib" "/opt/rustwide/target/debug/deps/libutf8_ranges-249fc7ed27b8f63d.rlib" "/opt/rustwide/target/debug/deps/libregex_syntax-10a23ee17ebd16e6.rlib" "/opt/rustwide/target/debug/deps/libucd_util-683ba97c97b91bd2.rlib" "/opt/rustwide/target/debug/deps/libthread_local-ab0e02efafb11915.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-7c0477ae3415ac1f.rlib" "/opt/rustwide/target/debug/deps/libaho_corasick-6355c9049ae29506.rlib" "/opt/rustwide/target/debug/deps/libmemchr-9a7b646f9058008a.rlib" "/opt/rustwide/target/debug/deps/liblog-bb9f71d1569cdaf1.rlib" "/opt/rustwide/target/debug/deps/liblog-93951ff8e53c2b76.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-b00c34326580381c.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-5989bcf78182f65e.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-4d6da34bc177af8d.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-10e0d6c948699482.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-c2318e2415657781.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-3815b93ed84badbb.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-d7999143d95238cb.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-c58298a0d40df8b8.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-b7de97e2ba6fb4e2.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6f71c9f654d72cce.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-95ea48ddc44a311b.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-7402cd4761aebc14.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-68f423c59dc48a40.rlib" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-54580c7798bf2225.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-95a4d456339b7385.rlib" "-Wl,-Bdynamic" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lvirt" "-lutil" "-ldl" "-lutil" "-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] [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" "20f309fbafdd97e9443b1369db5f69ef8e952a9afbdbb67b1f45d69ac3e9481e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20f309fbafdd97e9443b1369db5f69ef8e952a9afbdbb67b1f45d69ac3e9481e", kill_on_drop: false }`
[INFO] [stdout] 20f309fbafdd97e9443b1369db5f69ef8e952a9afbdbb67b1f45d69ac3e9481e