[INFO] fetching crate verne 0.1.0...
[INFO] checking verne-0.1.0 against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] extracting crate verne 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate verne 0.1.0 on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-10/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded virt v0.2.11
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d98ba6bad68d3b237a3f1e7e5a7871906ddad2a51e9cfe9e2a97fcc39265709e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "d98ba6bad68d3b237a3f1e7e5a7871906ddad2a51e9cfe9e2a97fcc39265709e"`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking ucd-util v0.1.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking virt v0.2.11
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking verne v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `vcpus`
[INFO] [stderr]   --> src/libvirt.rs:54:18
[INFO] [stderr]    |
[INFO] [stderr] 54 |                  ref vcpus,
[INFO] [stderr]    |                  ^^^^^^^^^ help: try ignoring the field: `vcpus: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `memory`
[INFO] [stderr]   --> src/libvirt.rs:55:18
[INFO] [stderr]    |
[INFO] [stderr] 55 |                  ref memory,
[INFO] [stderr]    |                  ^^^^^^^^^^ help: try ignoring the field: `memory: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vcpus`
[INFO] [stderr]   --> src/libvirt.rs:54:18
[INFO] [stderr]    |
[INFO] [stderr] 54 |                  ref vcpus,
[INFO] [stderr]    |                  ^^^^^^^^^ help: try ignoring the field: `vcpus: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `memory`
[INFO] [stderr]   --> src/libvirt.rs:55:18
[INFO] [stderr]    |
[INFO] [stderr] 55 |                  ref memory,
[INFO] [stderr]    |                  ^^^^^^^^^^ help: try ignoring the field: `memory: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/libvirt.rs:124:17
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 dom.destroy();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/libvirt.rs:126:21
[INFO] [stderr]     |
[INFO] [stderr] 126 |                     dom.undefine();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/libvirt.rs:128:17
[INFO] [stderr]     |
[INFO] [stderr] 128 |                 dom.free();
[INFO] [stderr]     |                 ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/libvirt.rs:124:17
[INFO] [stderr]     |
[INFO] [stderr] 124 |                 dom.destroy();
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/libvirt.rs:126:21
[INFO] [stderr]     |
[INFO] [stderr] 126 |                     dom.undefine();
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/libvirt.rs:128:17
[INFO] [stderr]     |
[INFO] [stderr] 128 |                 dom.free();
[INFO] [stderr]     |                 ^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.34s
[INFO] running `"docker" "inspect" "d98ba6bad68d3b237a3f1e7e5a7871906ddad2a51e9cfe9e2a97fcc39265709e"`
[INFO] running `"docker" "rm" "-f" "d98ba6bad68d3b237a3f1e7e5a7871906ddad2a51e9cfe9e2a97fcc39265709e"`
[INFO] [stdout] d98ba6bad68d3b237a3f1e7e5a7871906ddad2a51e9cfe9e2a97fcc39265709e