[INFO] cloning repository https://github.com/Soft/process-queue
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Soft/process-queue" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSoft%2Fprocess-queue", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSoft%2Fprocess-queue'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d3ac155b50345219e57b7a318c6a4721a3ba1631
[INFO] checking Soft/process-queue 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%2FSoft%2Fprocess-queue" "/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/Soft/process-queue
[INFO] finished tweaking git repo https://github.com/Soft/process-queue
[INFO] tweaked toml for git repo https://github.com/Soft/process-queue written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Soft/process-queue 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/Soft/process-queue 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] 815582b790068d087320a0e5c250affac80b5c53e9c0a0b3fae32f5eeaff5700
[INFO] running `Command { std: "docker" "start" "-a" "815582b790068d087320a0e5c250affac80b5c53e9c0a0b3fae32f5eeaff5700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "815582b790068d087320a0e5c250affac80b5c53e9c0a0b3fae32f5eeaff5700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "815582b790068d087320a0e5c250affac80b5c53e9c0a0b3fae32f5eeaff5700", kill_on_drop: false }`
[INFO] [stdout] 815582b790068d087320a0e5c250affac80b5c53e9c0a0b3fae32f5eeaff5700
[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] 6575722fd2fee3213927b5e5e72ce6d9da0c2707af8a0fc21458c21c280e8212
[INFO] running `Command { std: "docker" "start" "-a" "6575722fd2fee3213927b5e5e72ce6d9da0c2707af8a0fc21458c21c280e8212", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio v1.2.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling serde_json v1.0.59
[INFO] [stderr]    Compiling anyhow v1.0.33
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking bytes v1.0.1
[INFO] [stderr]     Checking shlex v1.0.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking signal-hook-registry v1.2.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.7
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking simplelog v0.10.0
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling structopt-derive v0.4.13
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]     Checking structopt v0.3.20
[INFO] [stderr]     Checking serde v1.0.117
[INFO] [stderr]     Checking process-queue v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `stdout` is never read
[INFO] [stdout]   --> src/args.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct CreateQueueCommand {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub stdout: bool,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ffi.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 |     Parent(libc::pid_t),
[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] 81 -     Parent(libc::pid_t),
[INFO] [stdout] 81 +     Parent(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/sync.rs:45:22
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct DropGuard(mpsc::Sender<()>);
[INFO] [stdout]    |            --------- ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `DropGuard` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/args.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[structopt(short = "l", long, help = "Log file")]
[INFO] [stdout] 17 | |     pub log_file: Option<PathBuf>,
[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: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | /     #[structopt(short = "n", long, default_value = "default", help = "Queue name")]
[INFO] [stdout] 23 | |     pub name: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/args.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     #[structopt(short = "f", long, help = "Output to file")]
[INFO] [stdout] 32 | |     pub file: Option<PathBuf>,
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/args.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | /     #[structopt(short = "d", long, help = "Default working directory")]
[INFO] [stdout] 36 | |     pub dir: Option<PathBuf>,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | /     #[structopt(short = "n", long, default_value = "default", help = "Queue name")]
[INFO] [stdout] 46 | |     pub name: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | /     #[structopt(short = "n", long, default_value = "default", help = "Task name")]
[INFO] [stdout] 52 | |     pub name: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/args.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | /     #[structopt(short = "d", long, help = "Working directory")]
[INFO] [stdout] 54 | |     pub dir: Option<PathBuf>,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub args: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 | /     #[structopt(short = "n", long, default_value = "default", help = "Task name")]
[INFO] [stdout] 63 | |     pub name: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> src/args.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 106 | /     #[structopt(short = "s", long, help = "Server socket path")]
[INFO] [stdout] 107 | |     pub socket: Option<PathBuf>,
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `stdout` is never read
[INFO] [stdout]   --> src/args.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct CreateQueueCommand {
[INFO] [stdout]    |            ------------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub stdout: bool,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/ffi.rs:81:12
[INFO] [stdout]    |
[INFO] [stdout] 81 |     Parent(libc::pid_t),
[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] 81 -     Parent(libc::pid_t),
[INFO] [stdout] 81 +     Parent(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/sync.rs:45:22
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub struct DropGuard(mpsc::Sender<()>);
[INFO] [stdout]    |            --------- ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |            |
[INFO] [stdout]    |            field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = help: consider removing this field
[INFO] [stdout]    = note: `DropGuard` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/args.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[structopt(short = "l", long, help = "Log file")]
[INFO] [stdout] 17 | |     pub log_file: Option<PathBuf>,
[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: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | /     #[structopt(short = "n", long, default_value = "default", help = "Queue name")]
[INFO] [stdout] 23 | |     pub name: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/args.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     #[structopt(short = "f", long, help = "Output to file")]
[INFO] [stdout] 32 | |     pub file: Option<PathBuf>,
[INFO] [stdout]    | |_____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/args.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | /     #[structopt(short = "d", long, help = "Default working directory")]
[INFO] [stdout] 36 | |     pub dir: Option<PathBuf>,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:45:5
[INFO] [stdout]    |
[INFO] [stdout] 45 | /     #[structopt(short = "n", long, default_value = "default", help = "Queue name")]
[INFO] [stdout] 46 | |     pub name: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 | /     #[structopt(short = "n", long, default_value = "default", help = "Task name")]
[INFO] [stdout] 52 | |     pub name: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/args.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | /     #[structopt(short = "d", long, help = "Working directory")]
[INFO] [stdout] 54 | |     pub dir: Option<PathBuf>,
[INFO] [stdout]    | |____________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 |     pub args: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/args.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 | /     #[structopt(short = "n", long, default_value = "default", help = "Task name")]
[INFO] [stdout] 63 | |     pub name: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]    --> src/args.rs:106:5
[INFO] [stdout]     |
[INFO] [stdout] 106 | /     #[structopt(short = "s", long, help = "Server socket path")]
[INFO] [stdout] 107 | |     pub socket: Option<PathBuf>,
[INFO] [stdout]     | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `process-queue` (bin "pqueue") due to 10 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `process-queue` (bin "pqueue" test) due to 10 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "6575722fd2fee3213927b5e5e72ce6d9da0c2707af8a0fc21458c21c280e8212", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6575722fd2fee3213927b5e5e72ce6d9da0c2707af8a0fc21458c21c280e8212", kill_on_drop: false }`
[INFO] [stdout] 6575722fd2fee3213927b5e5e72ce6d9da0c2707af8a0fc21458c21c280e8212
