[INFO] cloning repository https://github.com/arighi/virtiofsd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arighi/virtiofsd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farighi%2Fvirtiofsd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farighi%2Fvirtiofsd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0126226ad22d026dcb136ec6b3b6257a3ba4905e
[INFO] checking arighi/virtiofsd against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farighi%2Fvirtiofsd" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/arighi/virtiofsd
[INFO] finished tweaking git repo https://github.com/arighi/virtiofsd
[INFO] tweaked toml for git repo https://github.com/arighi/virtiofsd written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/arighi/virtiofsd on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/arighi/virtiofsd already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 87ee9c7c84fe6fda7f57004ecf9469e222f7a9957e5ac81c052ce0954d4f2824
[INFO] running `Command { std: "docker" "start" "-a" "87ee9c7c84fe6fda7f57004ecf9469e222f7a9957e5ac81c052ce0954d4f2824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "87ee9c7c84fe6fda7f57004ecf9469e222f7a9957e5ac81c052ce0954d4f2824", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87ee9c7c84fe6fda7f57004ecf9469e222f7a9957e5ac81c052ce0954d4f2824", kill_on_drop: false }`
[INFO] [stdout] 87ee9c7c84fe6fda7f57004ecf9469e222f7a9957e5ac81c052ce0954d4f2824
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0d4a131dea101fe3f2159e840c25a0dcd2171049030bb61421a46617d5f1beb2
[INFO] running `Command { std: "docker" "start" "-a" "0d4a131dea101fe3f2159e840c25a0dcd2171049030bb61421a46617d5f1beb2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]    Compiling proc-macro2 v1.0.40
[INFO] [stderr]    Compiling unicode-ident v1.0.2
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling io-lifetimes v1.0.4
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking arc-swap v1.5.0
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling rustix v0.36.7
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]     Checking linux-raw-sys v0.1.4
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling libseccomp-sys v0.2.1
[INFO] [stderr]     Checking virtio-bindings v0.1.0
[INFO] [stderr]    Compiling capng v0.2.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking vmm-sys-util v0.11.1
[INFO] [stderr]     Checking vm-memory v0.10.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking time v0.3.11
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking vhost v0.6.0
[INFO] [stderr]     Checking virtio-queue v0.7.0
[INFO] [stderr]     Checking syslog v6.0.1
[INFO] [stderr]     Checking vhost-user-backend v0.8.0
[INFO] [stderr]     Checking is-terminal v0.4.2
[INFO] [stderr]     Checking env_logger v0.10.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking virtiofsd v1.6.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `virtq_desc` is never constructed
[INFO] [stdout]    --> src/descriptor_utils.rs:434:8
[INFO] [stdout]     |
[INFO] [stdout] 434 | struct virtq_desc {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `virtq_avail` is never constructed
[INFO] [stdout]    --> src/descriptor_utils.rs:446:8
[INFO] [stdout]     |
[INFO] [stdout] 446 | struct virtq_avail {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/passthrough/mod.rs:1581:20
[INFO] [stdout]      |
[INFO] [stdout] 1581 |             Handle(Arc<HandleData>, RawFd),
[INFO] [stdout]      |             ------ ^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             field in this variant
[INFO] [stdout]      |
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 1581 -             Handle(Arc<HandleData>, RawFd),
[INFO] [stdout] 1581 +             Handle((), RawFd),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/util.rs:76:18
[INFO] [stdout]    |
[INFO] [stdout] 76 |     struct PidFd(File);
[INFO] [stdout]    |            ----- ^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/filesystem.rs:374:13
[INFO] [stdout]     |
[INFO] [stdout] 374 |     fn next(&mut self) -> Option<DirEntry>;
[INFO] [stdout]     |             ^^^^^^^^^            ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |             |
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 374 |     fn next(&mut self) -> Option<DirEntry<'_>>;
[INFO] [stdout]     |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/read_dir.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn next(&mut self) -> Option<DirEntry> {
[INFO] [stdout]    |             ^^^^^^^^^            ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |             |
[INFO] [stdout]    |             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn next(&mut self) -> Option<DirEntry<'_>> {
[INFO] [stdout]    |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]     --> src/passthrough/mod.rs:1581:20
[INFO] [stdout]      |
[INFO] [stdout] 1581 |             Handle(Arc<HandleData>, RawFd),
[INFO] [stdout]      |             ------ ^^^^^^^^^^^^^^^
[INFO] [stdout]      |             |
[INFO] [stdout]      |             field in this variant
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]      |
[INFO] [stdout] 1581 -             Handle(Arc<HandleData>, RawFd),
[INFO] [stdout] 1581 +             Handle((), RawFd),
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/util.rs:76:18
[INFO] [stdout]    |
[INFO] [stdout] 76 |     struct PidFd(File);
[INFO] [stdout]    |            ----- ^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/filesystem.rs:374:13
[INFO] [stdout]     |
[INFO] [stdout] 374 |     fn next(&mut self) -> Option<DirEntry>;
[INFO] [stdout]     |             ^^^^^^^^^            ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |             |
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 374 |     fn next(&mut self) -> Option<DirEntry<'_>>;
[INFO] [stdout]     |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/read_dir.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn next(&mut self) -> Option<DirEntry> {
[INFO] [stdout]    |             ^^^^^^^^^            ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |             |
[INFO] [stdout]    |             the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 69 |     fn next(&mut self) -> Option<DirEntry<'_>> {
[INFO] [stdout]    |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:58:23
[INFO] [stdout]    |
[INFO] [stdout] 58 |     CreateKillEventFd(io::Error),
[INFO] [stdout]    |     ----------------- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 58 -     CreateKillEventFd(io::Error),
[INFO] [stdout] 58 +     CreateKillEventFd(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:60:22
[INFO] [stdout]    |
[INFO] [stdout] 60 |     CreateThreadPool(io::Error),
[INFO] [stdout]    |     ---------------- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 60 -     CreateThreadPool(io::Error),
[INFO] [stdout] 60 +     CreateThreadPool(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:70:18
[INFO] [stdout]    |
[INFO] [stdout] 70 |     ProcessQueue(VhostUserFsError),
[INFO] [stdout]    |     ------------ ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 70 -     ProcessQueue(VhostUserFsError),
[INFO] [stdout] 70 +     ProcessQueue(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |     QueueReader(VufDescriptorError),
[INFO] [stdout]    |     ----------- ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 72 -     QueueReader(VufDescriptorError),
[INFO] [stdout] 72 +     QueueReader(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |     QueueWriter(VufDescriptorError),
[INFO] [stdout]    |     ----------- ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 74 -     QueueWriter(VufDescriptorError),
[INFO] [stdout] 74 +     QueueWriter(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:485:5
[INFO] [stdout]     |
[INFO] [stdout] 485 | /     /// Shared directory path
[INFO] [stdout] 486 | |     #[structopt(long)]
[INFO] [stdout] 487 | |     shared_dir: Option<String>,
[INFO] [stdout]     | |______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:489:5
[INFO] [stdout]     |
[INFO] [stdout] 489 | /     /// vhost-user socket path [deprecated]
[INFO] [stdout] 490 | |     #[structopt(long, required_unless_one = &["fd", "socket-path", "print-capabilities"])]
[INFO] [stdout] 491 | |     socket: Option<String>,
[INFO] [stdout]     | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:493:5
[INFO] [stdout]     |
[INFO] [stdout] 493 | /     /// vhost-user socket path
[INFO] [stdout] 494 | |     #[structopt(long = "socket-path", required_unless_one = &["fd", "socket", "print-capabilities"])]
[INFO] [stdout] 495 | |     socket_path: Option<String>,
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:497:5
[INFO] [stdout]     |
[INFO] [stdout] 497 | /     /// Name of group for the vhost-user socket
[INFO] [stdout] 498 | |     #[structopt(long = "socket-group", conflicts_with_all = &["fd", "print-capabilites"])]
[INFO] [stdout] 499 | |     socket_group: Option<String>,
[INFO] [stdout]     | |________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:577:5
[INFO] [stdout]     |
[INFO] [stdout] 577 | /     /// Modify the list of capabilities, e.g., --modcaps=+sys_admin:-chown
[INFO] [stdout] 578 | |     #[structopt(long)]
[INFO] [stdout] 579 | |     modcaps: Option<String>,
[INFO] [stdout]     | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:594:5
[INFO] [stdout]     |
[INFO] [stdout] 594 | /     /// Options in a format compatible with the legacy implementation [deprecated]
[INFO] [stdout] 595 | |     #[structopt(short = "o")]
[INFO] [stdout] 596 | |     compat_options: Option<Vec<String>>,
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:58:23
[INFO] [stdout]    |
[INFO] [stdout] 58 |     CreateKillEventFd(io::Error),
[INFO] [stdout]    |     ----------------- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 58 -     CreateKillEventFd(io::Error),
[INFO] [stdout] 58 +     CreateKillEventFd(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:60:22
[INFO] [stdout]    |
[INFO] [stdout] 60 |     CreateThreadPool(io::Error),
[INFO] [stdout]    |     ---------------- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 60 -     CreateThreadPool(io::Error),
[INFO] [stdout] 60 +     CreateThreadPool(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:70:18
[INFO] [stdout]    |
[INFO] [stdout] 70 |     ProcessQueue(VhostUserFsError),
[INFO] [stdout]    |     ------------ ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 70 -     ProcessQueue(VhostUserFsError),
[INFO] [stdout] 70 +     ProcessQueue(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:72:17
[INFO] [stdout]    |
[INFO] [stdout] 72 |     QueueReader(VufDescriptorError),
[INFO] [stdout]    |     ----------- ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 72 -     QueueReader(VufDescriptorError),
[INFO] [stdout] 72 +     QueueReader(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/main.rs:74:17
[INFO] [stdout]    |
[INFO] [stdout] 74 |     QueueWriter(VufDescriptorError),
[INFO] [stdout]    |     ----------- ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 74 -     QueueWriter(VufDescriptorError),
[INFO] [stdout] 74 +     QueueWriter(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:485:5
[INFO] [stdout]     |
[INFO] [stdout] 485 | /     /// Shared directory path
[INFO] [stdout] 486 | |     #[structopt(long)]
[INFO] [stdout] 487 | |     shared_dir: Option<String>,
[INFO] [stdout]     | |______________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:489:5
[INFO] [stdout]     |
[INFO] [stdout] 489 | /     /// vhost-user socket path [deprecated]
[INFO] [stdout] 490 | |     #[structopt(long, required_unless_one = &["fd", "socket-path", "print-capabilities"])]
[INFO] [stdout] 491 | |     socket: Option<String>,
[INFO] [stdout]     | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:493:5
[INFO] [stdout]     |
[INFO] [stdout] 493 | /     /// vhost-user socket path
[INFO] [stdout] 494 | |     #[structopt(long = "socket-path", required_unless_one = &["fd", "socket", "print-capabilities"])]
[INFO] [stdout] 495 | |     socket_path: Option<String>,
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:497:5
[INFO] [stdout]     |
[INFO] [stdout] 497 | /     /// Name of group for the vhost-user socket
[INFO] [stdout] 498 | |     #[structopt(long = "socket-group", conflicts_with_all = &["fd", "print-capabilites"])]
[INFO] [stdout] 499 | |     socket_group: Option<String>,
[INFO] [stdout]     | |________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:577:5
[INFO] [stdout]     |
[INFO] [stdout] 577 | /     /// Modify the list of capabilities, e.g., --modcaps=+sys_admin:-chown
[INFO] [stdout] 578 | |     #[structopt(long)]
[INFO] [stdout] 579 | |     modcaps: Option<String>,
[INFO] [stdout]     | |___________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:594:5
[INFO] [stdout]     |
[INFO] [stdout] 594 | /     /// Options in a format compatible with the legacy implementation [deprecated]
[INFO] [stdout] 595 | |     #[structopt(short = "o")]
[INFO] [stdout] 596 | |     compat_options: Option<Vec<String>>,
[INFO] [stdout]     | |_______________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `virtiofsd` (bin "virtiofsd" test) due to 6 previous errors; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `virtiofsd` (bin "virtiofsd") due to 6 previous errors; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "0d4a131dea101fe3f2159e840c25a0dcd2171049030bb61421a46617d5f1beb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d4a131dea101fe3f2159e840c25a0dcd2171049030bb61421a46617d5f1beb2", kill_on_drop: false }`
[INFO] [stdout] 0d4a131dea101fe3f2159e840c25a0dcd2171049030bb61421a46617d5f1beb2
