[INFO] fetching crate actnel 0.1.5...
[INFO] checking actnel-0.1.5 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate actnel 0.1.5 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate actnel 0.1.5
[INFO] finished tweaking crates.io crate actnel 0.1.5
[INFO] tweaked toml for crates.io crate actnel 0.1.5 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate actnel 0.1.5 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 crates.io crate actnel 0.1.5 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] c5b4412508bd6eef26e2b1c6fdf65fa7c2cf2c26fa6698efe2e62246be36b60f
[INFO] running `Command { std: "docker" "start" "-a" "c5b4412508bd6eef26e2b1c6fdf65fa7c2cf2c26fa6698efe2e62246be36b60f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5b4412508bd6eef26e2b1c6fdf65fa7c2cf2c26fa6698efe2e62246be36b60f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5b4412508bd6eef26e2b1c6fdf65fa7c2cf2c26fa6698efe2e62246be36b60f", kill_on_drop: false }`
[INFO] [stdout] c5b4412508bd6eef26e2b1c6fdf65fa7c2cf2c26fa6698efe2e62246be36b60f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] d6b7c6fed433b750d0de0a362ac9d7b7385317994976ab27bb8d98d8ae6ae099
[INFO] running `Command { std: "docker" "start" "-a" "d6b7c6fed433b750d0de0a362ac9d7b7385317994976ab27bb8d98d8ae6ae099", kill_on_drop: false }`
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[INFO] [stdout] warning: field `sub_domain` is never read
[INFO] [stdout]   --> src/lib.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct Wormhole {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 81 |     sub_domain: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `send_message` and `receive_message` are never used
[INFO] [stdout]    --> src/lib.rs:200:18
[INFO] [stdout]     |
[INFO] [stdout]  86 | impl Wormhole {
[INFO] [stdout]     | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pub async fn send_message(&self, message: Message) -> Result<(), mpsc::error::SendError<Message>> {
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 |     pub async fn receive_message(&self) -> Option<Message> {
[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/config.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | /     /// Sets an API authentication key to use for this tunnel
[INFO] [stdout] 33 | |     #[structopt(short = "k", long = "key")]
[INFO] [stdout] 34 | |     key: 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: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/config.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | /     /// Specify a sub-domain for this tunnel
[INFO] [stdout] 37 | |     #[structopt(short = "s", long = "subdomain")]
[INFO] [stdout] 38 | |     sub_domain: Option<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/config.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | /     /// Sets the HOST (i.e. localhost) to forward incoming tunnel traffic to
[INFO] [stdout] 41 | |     #[structopt(long = "host", default_value = "localhost")]
[INFO] [stdout] 42 | |     local_host: 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/config.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 | /         /// Sets an API authentication key on disk for future use
[INFO] [stdout] 62 | |         #[structopt(short = "k", long = "key")]
[INFO] [stdout] 63 | |         key: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `actnel` (lib) due to 4 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `sub_domain` is never read
[INFO] [stdout]   --> src/lib.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 78 | struct Wormhole {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 81 |     sub_domain: String,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `send_message` and `receive_message` are never used
[INFO] [stdout]    --> src/lib.rs:200:18
[INFO] [stdout]     |
[INFO] [stdout]  86 | impl Wormhole {
[INFO] [stdout]     | ------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 200 |     pub async fn send_message(&self, message: Message) -> Result<(), mpsc::error::SendError<Message>> {
[INFO] [stdout]     |                  ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 205 |     pub async fn receive_message(&self) -> Option<Message> {
[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/config.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | /     /// Sets an API authentication key to use for this tunnel
[INFO] [stdout] 33 | |     #[structopt(short = "k", long = "key")]
[INFO] [stdout] 34 | |     key: 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: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/config.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | /     /// Specify a sub-domain for this tunnel
[INFO] [stdout] 37 | |     #[structopt(short = "s", long = "subdomain")]
[INFO] [stdout] 38 | |     sub_domain: Option<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/config.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 | /     /// Sets the HOST (i.e. localhost) to forward incoming tunnel traffic to
[INFO] [stdout] 41 | |     #[structopt(long = "host", default_value = "localhost")]
[INFO] [stdout] 42 | |     local_host: 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/config.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 | /         /// Sets an API authentication key on disk for future use
[INFO] [stdout] 62 | |         #[structopt(short = "k", long = "key")]
[INFO] [stdout] 63 | |         key: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `actnel` (lib test) due to 4 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "d6b7c6fed433b750d0de0a362ac9d7b7385317994976ab27bb8d98d8ae6ae099", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6b7c6fed433b750d0de0a362ac9d7b7385317994976ab27bb8d98d8ae6ae099", kill_on_drop: false }`
[INFO] [stdout] d6b7c6fed433b750d0de0a362ac9d7b7385317994976ab27bb8d98d8ae6ae099
