[INFO] cloning repository https://github.com/andrewcsmith/osc_server_example [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/andrewcsmith/osc_server_example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewcsmith%2Fosc_server_example", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewcsmith%2Fosc_server_example'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 3bb571f79dc6e19c83fbc81eb999eef0f978bf24 [INFO] checking andrewcsmith/osc_server_example/3bb571f79dc6e19c83fbc81eb999eef0f978bf24 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fandrewcsmith%2Fosc_server_example" "/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/andrewcsmith/osc_server_example on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/andrewcsmith/osc_server_example [INFO] finished tweaking git repo https://github.com/andrewcsmith/osc_server_example [INFO] tweaked toml for git repo https://github.com/andrewcsmith/osc_server_example written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/andrewcsmith/osc_server_example 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded tokio-timer v0.2.4 [INFO] [stderr] Downloaded log v0.4.3 [INFO] [stderr] Downloaded tokio-tcp v0.1.0 [INFO] [stderr] Downloaded tokio-fs v0.1.2 [INFO] [stderr] Downloaded tokio-executor v0.1.2 [INFO] [stderr] Downloaded tokio-reactor v0.1.2 [INFO] [stderr] Downloaded serde_osc v0.4.2 [INFO] [stderr] Downloaded osc_address v0.2.2 [INFO] [stderr] Downloaded osc_address_derive v0.2.2 [INFO] [stderr] Downloaded lazy_static v1.0.2 [INFO] [stderr] Downloaded serde_derive v1.0.70 [INFO] [stderr] Downloaded quote v0.6.4 [INFO] [stderr] Downloaded proc-macro2 v0.4.9 [INFO] [stderr] Downloaded serde v1.0.70 [INFO] [stderr] Downloaded syn v0.14.5 [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 08e581d0e4d3d2993e1b8c17ef2ec9375120f230bbdf84d7604c144f9868ab2c [INFO] running `Command { std: "docker" "start" "-a" "08e581d0e4d3d2993e1b8c17ef2ec9375120f230bbdf84d7604c144f9868ab2c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "08e581d0e4d3d2993e1b8c17ef2ec9375120f230bbdf84d7604c144f9868ab2c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "08e581d0e4d3d2993e1b8c17ef2ec9375120f230bbdf84d7604c144f9868ab2c", kill_on_drop: false }` [INFO] [stdout] 08e581d0e4d3d2993e1b8c17ef2ec9375120f230bbdf84d7604c144f9868ab2c [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6f330d0d24450d090dfdcb5d04961013c3de06dbc163bafcda2299314fcc77e0 [INFO] running `Command { std: "docker" "start" "-a" "6f330d0d24450d090dfdcb5d04961013c3de06dbc163bafcda2299314fcc77e0", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Checking libc v0.2.42 [INFO] [stderr] Checking cfg-if v0.1.4 [INFO] [stderr] Checking futures v0.1.23 [INFO] [stderr] Checking byteorder v1.2.3 [INFO] [stderr] Checking nodrop v0.1.12 [INFO] [stderr] Checking lazycell v0.6.0 [INFO] [stderr] Checking lazy_static v1.0.2 [INFO] [stderr] Checking memoffset v0.2.1 [INFO] [stderr] Checking slab v0.4.0 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Compiling serde v1.0.70 [INFO] [stderr] Compiling unicode-xid v0.0.4 [INFO] [stderr] Compiling quote v0.3.15 [INFO] [stderr] Checking scoped-tls v0.1.2 [INFO] [stderr] Checking take v0.1.0 [INFO] [stderr] Compiling proc-macro2 v0.4.9 [INFO] [stderr] Checking log v0.4.3 [INFO] [stderr] Checking crossbeam-utils v0.3.2 [INFO] [stderr] Compiling synom v0.11.3 [INFO] [stderr] Checking slab v0.3.0 [INFO] [stderr] Checking arrayvec v0.4.7 [INFO] [stderr] Checking smallvec v0.2.1 [INFO] [stderr] Compiling syn v0.11.11 [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking crossbeam-epoch v0.4.3 [INFO] [stderr] Compiling quote v0.6.4 [INFO] [stderr] Compiling syn v0.14.5 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking rand v0.4.2 [INFO] [stderr] Checking num_cpus v1.8.0 [INFO] [stderr] Checking crossbeam-deque v0.3.1 [INFO] [stderr] Checking bytes v0.4.9 [INFO] [stderr] Checking mio v0.6.15 [INFO] [stderr] Checking tokio-executor v0.1.2 [INFO] [stderr] Checking tokio-io v0.1.7 [INFO] [stderr] Checking tokio-service v0.1.0 [INFO] [stderr] Checking tokio-timer v0.2.4 [INFO] [stderr] Checking tokio-threadpool v0.1.5 [INFO] [stderr] Checking rand v0.3.22 [INFO] [stderr] Compiling osc_address_derive v0.2.2 [INFO] [stderr] Checking tokio-reactor v0.1.2 [INFO] [stderr] Checking tokio-codec v0.1.0 [INFO] [stderr] Checking tokio-fs v0.1.2 [INFO] [stderr] Checking tokio-tcp v0.1.0 [INFO] [stderr] Checking tokio-udp v0.1.1 [INFO] [stderr] Checking tokio v0.1.7 [INFO] [stderr] Checking tokio-core v0.1.17 [INFO] [stderr] Compiling serde_derive v1.0.70 [INFO] [stderr] Checking tokio-proto v0.1.1 [INFO] [stderr] Checking serde_osc v0.4.2 [INFO] [stderr] Checking osc_address v0.2.2 [INFO] [stderr] Checking osc_server_example v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:12:1 [INFO] [stdout] | [INFO] [stdout] 12 | #[macro_use] extern crate serde_derive; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `OscMessage` [INFO] [stdout] --> src/main.rs:24:19 [INFO] [stdout] | [INFO] [stdout] 24 | use osc_address::{OscMessage, OscBundle, OscPacket}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Buf` and `BytesMut` [INFO] [stdout] --> src/main.rs:30:13 [INFO] [stdout] | [INFO] [stdout] 30 | use bytes::{Buf, BytesMut, BufMut}; [INFO] [stdout] | ^^^ ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BoxFuture` and `Sink` [INFO] [stdout] --> src/main.rs:31:23 [INFO] [stdout] | [INFO] [stdout] 31 | use futures::{Future, BoxFuture, Sink, Stream}; [INFO] [stdout] | ^^^^^^^^^ ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Encoder` [INFO] [stdout] --> src/main.rs:34:23 [INFO] [stdout] | [INFO] [stdout] 34 | use tokio_io::codec::{Encoder, Decoder}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tokio_service::Service` [INFO] [stdout] --> src/main.rs:35:5 [INFO] [stdout] | [INFO] [stdout] 35 | use tokio_service::Service; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated type alias `futures::BoxFuture`: removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228 [INFO] [stdout] --> src/main.rs:31:23 [INFO] [stdout] | [INFO] [stdout] 31 | use futures::{Future, BoxFuture, Sink, Stream}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `#[macro_use]` import [INFO] [stdout] --> src/main.rs:12:1 [INFO] [stdout] | [INFO] [stdout] 12 | #[macro_use] extern crate serde_derive; [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `OscMessage` [INFO] [stdout] --> src/main.rs:24:19 [INFO] [stdout] | [INFO] [stdout] 24 | use osc_address::{OscMessage, OscBundle, OscPacket}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Buf` and `BytesMut` [INFO] [stdout] --> src/main.rs:30:13 [INFO] [stdout] | [INFO] [stdout] 30 | use bytes::{Buf, BytesMut, BufMut}; [INFO] [stdout] | ^^^ ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BoxFuture` and `Sink` [INFO] [stdout] --> src/main.rs:31:23 [INFO] [stdout] | [INFO] [stdout] 31 | use futures::{Future, BoxFuture, Sink, Stream}; [INFO] [stdout] | ^^^^^^^^^ ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Encoder` [INFO] [stdout] --> src/main.rs:34:23 [INFO] [stdout] | [INFO] [stdout] 34 | use tokio_io::codec::{Encoder, Decoder}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `tokio_service::Service` [INFO] [stdout] --> src/main.rs:35:5 [INFO] [stdout] | [INFO] [stdout] 35 | use tokio_service::Service; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:69:27 [INFO] [stdout] | [INFO] [stdout] 69 | fn go() -> Result<(), Box> { [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 [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] 69 | fn go() -> Result<(), Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: use of deprecated type alias `futures::BoxFuture`: removed without replacement, recommended to use a local extension trait or function if needed, more details in https://github.com/rust-lang-nursery/futures-rs/issues/228 [INFO] [stdout] --> src/main.rs:31:23 [INFO] [stdout] | [INFO] [stdout] 31 | use futures::{Future, BoxFuture, Sink, Stream}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(deprecated)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/main.rs:69:27 [INFO] [stdout] | [INFO] [stdout] 69 | fn go() -> Result<(), Box> { [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 [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] 69 | fn go() -> Result<(), Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Future` [INFO] [stdout] --> src/main.rs:31:15 [INFO] [stdout] | [INFO] [stdout] 31 | use futures::{Future, BoxFuture, Sink, Stream}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Decoder` [INFO] [stdout] --> src/main.rs:34:32 [INFO] [stdout] | [INFO] [stdout] 34 | use tokio_io::codec::{Encoder, Decoder}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Future` [INFO] [stdout] --> src/main.rs:31:15 [INFO] [stdout] | [INFO] [stdout] 31 | use futures::{Future, BoxFuture, Sink, Stream}; [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Decoder` [INFO] [stdout] --> src/main.rs:34:32 [INFO] [stdout] | [INFO] [stdout] 34 | use tokio_io::codec::{Encoder, Decoder}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sock_sink` [INFO] [stdout] --> src/main.rs:74:10 [INFO] [stdout] | [INFO] [stdout] 74 | let (sock_sink, mut sock_stream) = socket.framed(OSCCodec).split(); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sock_sink` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:94:25 [INFO] [stdout] | [INFO] [stdout] 94 | _ => { [INFO] [stdout] | ^ no value can reach this [INFO] [stdout] | [INFO] [stdout] note: multiple earlier patterns match some of the same values [INFO] [stdout] --> src/main.rs:94:25 [INFO] [stdout] | [INFO] [stdout] 88 | OscMsg::Freq((), (new_freq,)) => { [INFO] [stdout] | ----------------------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 91 | OscMsg::Error((), (err,)) => { [INFO] [stdout] | ------------------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 94 | _ => { [INFO] [stdout] | ^ collectively making this unreachable [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `addr` [INFO] [stdout] --> src/main.rs:83:17 [INFO] [stdout] | [INFO] [stdout] 83 | .for_each(|(addr, bundle)| { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_addr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:74:21 [INFO] [stdout] | [INFO] [stdout] 74 | let (sock_sink, mut sock_stream) = socket.framed(OSCCodec).split(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `sock_sink` [INFO] [stdout] --> src/main.rs:74:10 [INFO] [stdout] | [INFO] [stdout] 74 | let (sock_sink, mut sock_stream) = socket.framed(OSCCodec).split(); [INFO] [stdout] | ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sock_sink` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:107:5 [INFO] [stdout] | [INFO] [stdout] 107 | core.run(sock_stream); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 107 | let _ = core.run(sock_stream); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unreachable pattern [INFO] [stdout] --> src/main.rs:94:25 [INFO] [stdout] | [INFO] [stdout] 94 | _ => { [INFO] [stdout] | ^ no value can reach this [INFO] [stdout] | [INFO] [stdout] note: multiple earlier patterns match some of the same values [INFO] [stdout] --> src/main.rs:94:25 [INFO] [stdout] | [INFO] [stdout] 88 | OscMsg::Freq((), (new_freq,)) => { [INFO] [stdout] | ----------------------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 91 | OscMsg::Error((), (err,)) => { [INFO] [stdout] | ------------------------- matches some of the same values [INFO] [stdout] ... [INFO] [stdout] 94 | _ => { [INFO] [stdout] | ^ collectively making this unreachable [INFO] [stdout] = note: `#[warn(unreachable_patterns)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `addr` [INFO] [stdout] --> src/main.rs:83:17 [INFO] [stdout] | [INFO] [stdout] 83 | .for_each(|(addr, bundle)| { [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_addr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:74:21 [INFO] [stdout] | [INFO] [stdout] 74 | let (sock_sink, mut sock_stream) = socket.framed(OSCCodec).split(); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:107:5 [INFO] [stdout] | [INFO] [stdout] 107 | core.run(sock_stream); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 107 | let _ = core.run(sock_stream); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 15 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 15 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.36s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.5 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3` [INFO] running `Command { std: "docker" "inspect" "6f330d0d24450d090dfdcb5d04961013c3de06dbc163bafcda2299314fcc77e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6f330d0d24450d090dfdcb5d04961013c3de06dbc163bafcda2299314fcc77e0", kill_on_drop: false }` [INFO] [stdout] 6f330d0d24450d090dfdcb5d04961013c3de06dbc163bafcda2299314fcc77e0