[INFO] fetching crate verne 0.1.0...
[INFO] checking verne-0.1.0 against beta-2020-07-24 for pr-75494-beta
[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 beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "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-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "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" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "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] 4aa1e4749832f8679f2cd68b012c026e6278405ac214a446985c36a70605c3d3
[INFO] running `Command { std: "docker" "start" "-a" "4aa1e4749832f8679f2cd68b012c026e6278405ac214a446985c36a70605c3d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4aa1e4749832f8679f2cd68b012c026e6278405ac214a446985c36a70605c3d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4aa1e4749832f8679f2cd68b012c026e6278405ac214a446985c36a70605c3d3", kill_on_drop: false }`
[INFO] [stdout] 4aa1e4749832f8679f2cd68b012c026e6278405ac214a446985c36a70605c3d3
[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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fb522bf66b1a5b5b9d07dda7ff7d0a25932f4578d3b7f5e0bb8074d1c2d4378e
[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" "fb522bf66b1a5b5b9d07dda7ff7d0a25932f4578d3b7f5e0bb8074d1c2d4378e", kill_on_drop: false }`
[INFO] [stderr]     Checking virt v0.2.11
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking 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 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] 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] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.84s
[INFO] running `Command { std: "docker" "inspect" "fb522bf66b1a5b5b9d07dda7ff7d0a25932f4578d3b7f5e0bb8074d1c2d4378e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb522bf66b1a5b5b9d07dda7ff7d0a25932f4578d3b7f5e0bb8074d1c2d4378e", kill_on_drop: false }`
[INFO] [stdout] fb522bf66b1a5b5b9d07dda7ff7d0a25932f4578d3b7f5e0bb8074d1c2d4378e
