[INFO] fetching crate verne 0.1.0...
[INFO] testing verne-0.1.0 against try#d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2 for pr-86479
[INFO] extracting crate verne 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate verne 0.1.0 on toolchain d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "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" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded virt v0.2.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 000988bd8276a84a78c8be45daf602a13a2a05fd27e777475e1bf6d60dfd10d6
[INFO] running `Command { std: "docker" "start" "-a" "000988bd8276a84a78c8be45daf602a13a2a05fd27e777475e1bf6d60dfd10d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "000988bd8276a84a78c8be45daf602a13a2a05fd27e777475e1bf6d60dfd10d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "000988bd8276a84a78c8be45daf602a13a2a05fd27e777475e1bf6d60dfd10d6", kill_on_drop: false }`
[INFO] [stdout] 000988bd8276a84a78c8be45daf602a13a2a05fd27e777475e1bf6d60dfd10d6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b53c29ed874c962e60611db96b6d839fa5ba822361a94b9c61854d7f3d7cdde7
[INFO] running `Command { std: "docker" "start" "-a" "b53c29ed874c962e60611db96b6d839fa5ba822361a94b9c61854d7f3d7cdde7", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling yaml-rust v0.3.5
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling virt v0.2.11
[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 `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] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 69 |         Err(f) => std::panic::panic_any(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-bb848b5ff514ada9.verne.737ac702-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.verne.737ac702-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9.3i4minms8wfncwaz.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libverne-4c980377ff99e607.rlib" "/opt/rustwide/target/debug/deps/libvirt-8e2d27b6c30556f1.rlib" "/opt/rustwide/target/debug/deps/liblibc-333aa5b90e875ae0.rlib" "/opt/rustwide/target/debug/deps/libyaml_rust-16895bbd21460947.rlib" "/opt/rustwide/target/debug/deps/libgetopts-c8d9031ac71c333a.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-58fa4f49044d3e0e.rlib" "/opt/rustwide/target/debug/deps/libenv_logger-e85a87f07606349c.rlib" "/opt/rustwide/target/debug/deps/libregex-81dff463cfad7371.rlib" "/opt/rustwide/target/debug/deps/libutf8_ranges-0d60015d2c37de0d.rlib" "/opt/rustwide/target/debug/deps/libregex_syntax-548a2b6e7f6aa9ce.rlib" "/opt/rustwide/target/debug/deps/libucd_util-d43dcf4c4b76415c.rlib" "/opt/rustwide/target/debug/deps/libthread_local-c026f58857577118.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-f67718dd40129317.rlib" "/opt/rustwide/target/debug/deps/libaho_corasick-c5e5ddf3995b3e95.rlib" "/opt/rustwide/target/debug/deps/libmemchr-4b7e7f97fdf3b1c2.rlib" "/opt/rustwide/target/debug/deps/liblog-27ca93f05de06f7b.rlib" "/opt/rustwide/target/debug/deps/liblog-062ec20cca67060d.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-477585129feec44c.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9c44f1fe63de3edb.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-5dfdbb680ac299a1.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-353beaf877db2fdf.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-cd4abd33332d2d3f.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-3b908b5b50ddd80c.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-9cafd3521b5532d3.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-7b0935832903a9ac.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-8a349b13d67c76e3.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-9d41e7cb09eafd8e.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-095194fedb4c0ec4.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-968cf83f088269ec.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-e63bbb95a6beff5c.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-9f216e67c2916fa5.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-4688b763605c6a0e.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a9b2dc3244289321.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-52d5241975807511.rlib" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9924c22ae1efcf66.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-003d83a588984e1f.rlib" "-Wl,-Bdynamic" "-lvirt" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/d2e9fff28e244f1ea4927194f1f9b77f93e2ffe2/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/verne-bb848b5ff514ada9" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-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" "b53c29ed874c962e60611db96b6d839fa5ba822361a94b9c61854d7f3d7cdde7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b53c29ed874c962e60611db96b6d839fa5ba822361a94b9c61854d7f3d7cdde7", kill_on_drop: false }`
[INFO] [stdout] b53c29ed874c962e60611db96b6d839fa5ba822361a94b9c61854d7f3d7cdde7