[INFO] cloning repository https://github.com/cheme/service-pre
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cheme/service-pre" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcheme%2Fservice-pre", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcheme%2Fservice-pre'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ce8e33baa75953bc18722e7f50023c20491b0a65
[INFO] checking cheme/service-pre against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcheme%2Fservice-pre" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cheme/service-pre on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cheme/service-pre
[INFO] finished tweaking git repo https://github.com/cheme/service-pre
[INFO] tweaked toml for git repo https://github.com/cheme/service-pre written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/cheme/service-pre 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/cheme/immut-send.git`
[INFO] [stderr]     Updating git repository `https://github.com/cheme/rust-proto.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot_core v0.2.14
[INFO] [stderr]   Downloaded smallvec v0.6.3
[INFO] [stderr]   Downloaded lock_api v0.1.3
[INFO] [stderr]   Downloaded coroutine v0.8.0
[INFO] [stderr]   Downloaded stable_deref_trait v1.1.0
[INFO] [stderr]   Downloaded gcc v0.3.54
[INFO] [stderr]   Downloaded cc v1.0.18
[INFO] [stderr]   Downloaded futures v0.1.23
[INFO] [stderr]   Downloaded backtrace-sys v0.1.23
[INFO] [stderr]   Downloaded parking_lot v0.6.3
[INFO] [stderr]   Downloaded owning_ref v0.3.3
[INFO] [stderr]   Downloaded context v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50a1f5e3c5bd41a68ec58b4d34f530ed9e35f9a3c24cef52312cd2b25446bab9
[INFO] running `Command { std: "docker" "start" "-a" "50a1f5e3c5bd41a68ec58b4d34f530ed9e35f9a3c24cef52312cd2b25446bab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50a1f5e3c5bd41a68ec58b4d34f530ed9e35f9a3c24cef52312cd2b25446bab9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50a1f5e3c5bd41a68ec58b4d34f530ed9e35f9a3c24cef52312cd2b25446bab9", kill_on_drop: false }`
[INFO] [stdout] 50a1f5e3c5bd41a68ec58b4d34f530ed9e35f9a3c24cef52312cd2b25446bab9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 411090d95d59a7919bac88b336ce8d6b7c24c78b3ef80710a596e5a950188a94
[INFO] running `Command { std: "docker" "start" "-a" "411090d95d59a7919bac88b336ce8d6b7c24c78b3ef80710a596e5a950188a94", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]     Checking stable_deref_trait v1.1.0
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking futures v0.1.23
[INFO] [stderr]     Checking smallvec v0.6.3
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking rust-proto v0.1.0 (https://github.com/cheme/rust-proto.git#04df6d11)
[INFO] [stderr]     Checking immut-send v0.0.1 (https://github.com/cheme/immut-send.git#e3197f3a)
[INFO] [stderr]     Checking lock_api v0.1.3
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking parking_lot v0.6.3
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking service-pre v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:22
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                      ^^ help: try naming the parameter or explicitly ignoring it: `_: &P`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:26
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                          ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Token`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                                 ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Ready`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:24
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                        ^^ help: try naming the parameter or explicitly ignoring it: `_: &P`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:28
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                            ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Token`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:35
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                                   ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Ready`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 |   fn with_capacity(usize) -> Self;
[INFO] [stdout]    |                    ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/channels/mod.rs:89:34
[INFO] [stdout]    |
[INFO] [stdout] 89 |   fn send_with_handle(&mut self, C) -> Result<Option<C>>;
[INFO] [stdout]    |                                  ^ help: try naming the parameter or explicitly ignoring it: `_: C`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     Option<<S as Service>::CommandIn>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Option<<S as Service>::CommandIn>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:221:20
[INFO] [stdout]     |
[INFO] [stdout] 221 |   fn get_weak_send(&Self::Send) -> Option<Self::WeakSend>;
[INFO] [stdout]     |                    ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Send`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:230:22
[INFO] [stdout]     |
[INFO] [stdout] 230 |   fn send(&mut self, Command) -> Result<()>;
[INFO] [stdout]     |                      ^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Command`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:22
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                      ^^ help: try naming the parameter or explicitly ignoring it: `_: &P`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:26
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                          ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Token`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                                 ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Ready`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:24
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                        ^^ help: try naming the parameter or explicitly ignoring it: `_: &P`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:28
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                            ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Token`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:35
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                                   ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Ready`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 |   fn with_capacity(usize) -> Self;
[INFO] [stdout]    |                    ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/channels/mod.rs:89:34
[INFO] [stdout]    |
[INFO] [stdout] 89 |   fn send_with_handle(&mut self, C) -> Result<Option<C>>;
[INFO] [stdout]    |                                  ^ help: try naming the parameter or explicitly ignoring it: `_: C`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     Option<<S as Service>::CommandIn>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Option<<S as Service>::CommandIn>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:221:20
[INFO] [stdout]     |
[INFO] [stdout] 221 |   fn get_weak_send(&Self::Send) -> Option<Self::WeakSend>;
[INFO] [stdout]     |                    ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Send`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:230:22
[INFO] [stdout]     |
[INFO] [stdout] 230 |   fn send(&mut self, Command) -> Result<()>;
[INFO] [stdout]     |                      ^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Command`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / error_chain! {
[INFO] [stdout] 21 | |   // standard types
[INFO] [stdout] 22 | |   types {
[INFO] [stdout] 23 | |       Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |   }
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:52:40
[INFO] [stdout]    |
[INFO] [stdout] 52 |       description(::std::error::Error::description(err))
[INFO] [stdout]    |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / error_chain! {
[INFO] [stdout] 21 | |   // standard types
[INFO] [stdout] 22 | |   types {
[INFO] [stdout] 23 | |       Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |   }
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:52:40
[INFO] [stdout]    |
[INFO] [stdout] 52 |       description(::std::error::Error::description(err))
[INFO] [stdout]    |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/channels/mod.rs:102:32
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn test_trait_item1<M>(_i: Box<SpawnSendWithHandle<M>>) {}
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn test_trait_item1<M>(_i: Box<dyn SpawnSendWithHandle<M>>) {}
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/channels/mod.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn test_trait_item2<M>(_i: &SpawnSendWithHandle<M>) {}
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn test_trait_item2<M>(_i: &dyn SpawnSendWithHandle<M>) {}
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / error_chain! {
[INFO] [stdout] 21 | |   // standard types
[INFO] [stdout] 22 | |   types {
[INFO] [stdout] 23 | |       Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |   }
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / error_chain! {
[INFO] [stdout] 21 | |   // standard types
[INFO] [stdout] 22 | |   types {
[INFO] [stdout] 23 | |       Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |   }
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadblock.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct ThreadHandleBlock<S, D, R> {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] 45 |   return_state: Arc<Mutex<Option<(S, D, R, Result<()>)>>>,
[INFO] [stdout] 46 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadpark.rs:61:3
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct ThreadHandlePark<S, D, R> {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] 60 |   return_state: Arc<Mutex<Option<(S, D, R, Result<()>)>>>,
[INFO] [stdout] 61 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadpark.rs:68:3
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub struct ThreadHandleParkRef<S: SRef, D: SRef, R: SRef> {
[INFO] [stdout]    |            ------------------- field in this struct
[INFO] [stdout] 67 |   return_state: Arc<Mutex<Option<(S::Send, D::Send, R::Send, Result<()>)>>>,
[INFO] [stdout] 68 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/spawn/restart.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         replace(self, rs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 128 |         let _ = replace(self, rs);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadblock.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct ThreadHandleBlock<S, D, R> {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] 45 |   return_state: Arc<Mutex<Option<(S, D, R, Result<()>)>>>,
[INFO] [stdout] 46 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadpark.rs:61:3
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct ThreadHandlePark<S, D, R> {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] 60 |   return_state: Arc<Mutex<Option<(S, D, R, Result<()>)>>>,
[INFO] [stdout] 61 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadpark.rs:68:3
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub struct ThreadHandleParkRef<S: SRef, D: SRef, R: SRef> {
[INFO] [stdout]    |            ------------------- field in this struct
[INFO] [stdout] 67 |   return_state: Arc<Mutex<Option<(S::Send, D::Send, R::Send, Result<()>)>>>,
[INFO] [stdout] 68 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_trait_item1` is never used
[INFO] [stdout]    --> src/channels/mod.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn test_trait_item1<M>(_i: Box<SpawnSendWithHandle<M>>) {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_trait_item2` is never used
[INFO] [stdout]    --> src/channels/mod.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn test_trait_item2<M>(_i: &SpawnSendWithHandle<M>) {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/spawn/restart.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         replace(self, rs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 128 |         let _ = replace(self, rs);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.06s
[INFO] running `Command { std: "docker" "inspect" "411090d95d59a7919bac88b336ce8d6b7c24c78b3ef80710a596e5a950188a94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "411090d95d59a7919bac88b336ce8d6b7c24c78b3ef80710a596e5a950188a94", kill_on_drop: false }`
[INFO] [stdout] 411090d95d59a7919bac88b336ce8d6b7c24c78b3ef80710a596e5a950188a94
[INFO] checking cheme/service-pre against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcheme%2Fservice-pre" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/cheme/service-pre on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/cheme/service-pre
[INFO] finished tweaking git repo https://github.com/cheme/service-pre
[INFO] tweaked toml for git repo https://github.com/cheme/service-pre written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/cheme/service-pre 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c3ce77d895f438dd2add867864665a259bb075642bf7e527ce30a53e61c2f41
[INFO] running `Command { std: "docker" "start" "-a" "8c3ce77d895f438dd2add867864665a259bb075642bf7e527ce30a53e61c2f41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c3ce77d895f438dd2add867864665a259bb075642bf7e527ce30a53e61c2f41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c3ce77d895f438dd2add867864665a259bb075642bf7e527ce30a53e61c2f41", kill_on_drop: false }`
[INFO] [stdout] 8c3ce77d895f438dd2add867864665a259bb075642bf7e527ce30a53e61c2f41
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0dee2b390eb90466cf65e7dfa7099dbd0d9a71760d2dd8cb0921984e306900fe
[INFO] running `Command { std: "docker" "start" "-a" "0dee2b390eb90466cf65e7dfa7099dbd0d9a71760d2dd8cb0921984e306900fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]     Checking stable_deref_trait v1.1.0
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking smallvec v0.6.3
[INFO] [stderr]     Checking futures v0.1.23
[INFO] [stderr]     Checking log v0.4.3
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]     Checking rust-proto v0.1.0 (https://github.com/cheme/rust-proto.git#04df6d11)
[INFO] [stderr]     Checking immut-send v0.0.1 (https://github.com/cheme/immut-send.git#e3197f3a)
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking lock_api v0.1.3
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]     Checking parking_lot v0.6.3
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking service-pre v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:22
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                      ^^ help: try naming the parameter or explicitly ignoring it: `_: &P`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:26
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                          ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Token`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                                 ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Ready`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:24
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                        ^^ help: try naming the parameter or explicitly ignoring it: `_: &P`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:28
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                            ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Token`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:35
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                                   ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Ready`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 |   fn with_capacity(usize) -> Self;
[INFO] [stdout]    |                    ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/channels/mod.rs:89:34
[INFO] [stdout]    |
[INFO] [stdout] 89 |   fn send_with_handle(&mut self, C) -> Result<Option<C>>;
[INFO] [stdout]    |                                  ^ help: try naming the parameter or explicitly ignoring it: `_: C`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     Option<<S as Service>::CommandIn>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Option<<S as Service>::CommandIn>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:221:20
[INFO] [stdout]     |
[INFO] [stdout] 221 |   fn get_weak_send(&Self::Send) -> Option<Self::WeakSend>;
[INFO] [stdout]     |                    ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Send`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:230:22
[INFO] [stdout]     |
[INFO] [stdout] 230 |   fn send(&mut self, Command) -> Result<()>;
[INFO] [stdout]     |                      ^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Command`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / error_chain! {
[INFO] [stdout] 21 | |   // standard types
[INFO] [stdout] 22 | |   types {
[INFO] [stdout] 23 | |       Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |   }
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:52:40
[INFO] [stdout]    |
[INFO] [stdout] 52 |       description(::std::error::Error::description(err))
[INFO] [stdout]    |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:22
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                      ^^ help: try naming the parameter or explicitly ignoring it: `_: &P`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:26
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                          ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Token`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:25:33
[INFO] [stdout]    |
[INFO] [stdout] 25 |   fn register(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                                 ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Ready`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:24
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                        ^^ help: try naming the parameter or explicitly ignoring it: `_: &P`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:28
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                            ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Token`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:27:35
[INFO] [stdout]    |
[INFO] [stdout] 27 |   fn reregister(&self, &P, Token, Ready) -> Result<bool>;
[INFO] [stdout]    |                                   ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Ready`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/eventloop/mod.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 |   fn with_capacity(usize) -> Self;
[INFO] [stdout]    |                    ^^^^^ help: try naming the parameter or explicitly ignoring it: `_: usize`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/channels/mod.rs:89:34
[INFO] [stdout]    |
[INFO] [stdout] 89 |   fn send_with_handle(&mut self, C) -> Result<Option<C>>;
[INFO] [stdout]    |                                  ^ help: try naming the parameter or explicitly ignoring it: `_: C`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     Option<<S as Service>::CommandIn>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Option<<S as Service>::CommandIn>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:221:20
[INFO] [stdout]     |
[INFO] [stdout] 221 |   fn get_weak_send(&Self::Send) -> Option<Self::WeakSend>;
[INFO] [stdout]     |                    ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: &Self::Send`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]    --> src/lib.rs:230:22
[INFO] [stdout]     |
[INFO] [stdout] 230 |   fn send(&mut self, Command) -> Result<()>;
[INFO] [stdout]     |                      ^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Command`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]     = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / error_chain! {
[INFO] [stdout] 21 | |   // standard types
[INFO] [stdout] 22 | |   types {
[INFO] [stdout] 23 | |       Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |   }
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:52:40
[INFO] [stdout]    |
[INFO] [stdout] 52 |       description(::std::error::Error::description(err))
[INFO] [stdout]    |                                        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/channels/mod.rs:102:32
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn test_trait_item1<M>(_i: Box<SpawnSendWithHandle<M>>) {}
[INFO] [stdout]     |                                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn test_trait_item1<M>(_i: Box<dyn SpawnSendWithHandle<M>>) {}
[INFO] [stdout]     |                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / error_chain! {
[INFO] [stdout] 21 | |   // standard types
[INFO] [stdout] 22 | |   types {
[INFO] [stdout] 23 | |       Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |   }
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/channels/mod.rs:105:29
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn test_trait_item2<M>(_i: &SpawnSendWithHandle<M>) {}
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn test_trait_item2<M>(_i: &dyn SpawnSendWithHandle<M>) {}
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/error.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / error_chain! {
[INFO] [stdout] 21 | |   // standard types
[INFO] [stdout] 22 | |   types {
[INFO] [stdout] 23 | |       Error, ErrorKind, ResultExt, Result;
[INFO] [stdout] ...  |
[INFO] [stdout] 64 | |   }
[INFO] [stdout] 65 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `impl_error_chain_processed` which comes from the expansion of the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadblock.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct ThreadHandleBlock<S, D, R> {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] 45 |   return_state: Arc<Mutex<Option<(S, D, R, Result<()>)>>>,
[INFO] [stdout] 46 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadpark.rs:61:3
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct ThreadHandlePark<S, D, R> {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] 60 |   return_state: Arc<Mutex<Option<(S, D, R, Result<()>)>>>,
[INFO] [stdout] 61 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadpark.rs:68:3
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub struct ThreadHandleParkRef<S: SRef, D: SRef, R: SRef> {
[INFO] [stdout]    |            ------------------- field in this struct
[INFO] [stdout] 67 |   return_state: Arc<Mutex<Option<(S::Send, D::Send, R::Send, Result<()>)>>>,
[INFO] [stdout] 68 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/spawn/restart.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         replace(self, rs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 128 |         let _ = replace(self, rs);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 18 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadblock.rs:46:3
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct ThreadHandleBlock<S, D, R> {
[INFO] [stdout]    |            ----------------- field in this struct
[INFO] [stdout] 45 |   return_state: Arc<Mutex<Option<(S, D, R, Result<()>)>>>,
[INFO] [stdout] 46 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadpark.rs:61:3
[INFO] [stdout]    |
[INFO] [stdout] 59 | pub struct ThreadHandlePark<S, D, R> {
[INFO] [stdout]    |            ---------------- field in this struct
[INFO] [stdout] 60 |   return_state: Arc<Mutex<Option<(S, D, R, Result<()>)>>>,
[INFO] [stdout] 61 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `th_join` is never read
[INFO] [stdout]   --> src/spawn/threadpark.rs:68:3
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub struct ThreadHandleParkRef<S: SRef, D: SRef, R: SRef> {
[INFO] [stdout]    |            ------------------- field in this struct
[INFO] [stdout] 67 |   return_state: Arc<Mutex<Option<(S::Send, D::Send, R::Send, Result<()>)>>>,
[INFO] [stdout] 68 |   th_join: JoinHandle<Result<()>>,
[INFO] [stdout]    |   ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_trait_item1` is never used
[INFO] [stdout]    --> src/channels/mod.rs:102:4
[INFO] [stdout]     |
[INFO] [stdout] 102 | fn test_trait_item1<M>(_i: Box<SpawnSendWithHandle<M>>) {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_trait_item2` is never used
[INFO] [stdout]    --> src/channels/mod.rs:105:4
[INFO] [stdout]     |
[INFO] [stdout] 105 | fn test_trait_item2<M>(_i: &SpawnSendWithHandle<M>) {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/spawn/restart.rs:128:9
[INFO] [stdout]     |
[INFO] [stdout] 128 |         replace(self, rs);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 128 |         let _ = replace(self, rs);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.22s
[INFO] running `Command { std: "docker" "inspect" "0dee2b390eb90466cf65e7dfa7099dbd0d9a71760d2dd8cb0921984e306900fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0dee2b390eb90466cf65e7dfa7099dbd0d9a71760d2dd8cb0921984e306900fe", kill_on_drop: false }`
[INFO] [stdout] 0dee2b390eb90466cf65e7dfa7099dbd0d9a71760d2dd8cb0921984e306900fe