[INFO] cloning repository https://github.com/OdaDaisuke/rust-echo-server [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OdaDaisuke/rust-echo-server" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOdaDaisuke%2Frust-echo-server", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOdaDaisuke%2Frust-echo-server'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 930ecd0fa9703cc256fee91b9a6c07536f282d3a [INFO] building OdaDaisuke/rust-echo-server against master#ad85bc524b1ad696e42061ad8338d382dffbdbe5 for pr-146237-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOdaDaisuke%2Frust-echo-server" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/OdaDaisuke/rust-echo-server [INFO] finished tweaking git repo https://github.com/OdaDaisuke/rust-echo-server [INFO] tweaked toml for git repo https://github.com/OdaDaisuke/rust-echo-server written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/OdaDaisuke/rust-echo-server on toolchain ad85bc524b1ad696e42061ad8338d382dffbdbe5 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/OdaDaisuke/rust-echo-server 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" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded actix-web-actors v2.0.0 [INFO] [stderr] Downloaded match_cfg v0.1.0 [INFO] [stderr] Downloaded actix-macros v0.1.3 [INFO] [stderr] Downloaded bytestring v1.0.0 [INFO] [stderr] Downloaded parking_lot_core v0.8.3 [INFO] [stderr] Downloaded tokio-util v0.3.1 [INFO] [stderr] Downloaded crossbeam-channel v0.4.4 [INFO] [stderr] Downloaded widestring v0.4.3 [INFO] [stderr] Downloaded gimli v0.24.0 [INFO] [stderr] Downloaded redox_syscall v0.2.9 [INFO] [stderr] Downloaded actix-utils v2.0.0 [INFO] [stderr] Downloaded actix-web-codegen v0.2.2 [INFO] [stderr] Downloaded hostname v0.3.1 [INFO] [stderr] Downloaded addr2line v0.15.2 [INFO] [stderr] Downloaded actix-server v1.0.4 [INFO] [stderr] Downloaded actix-codec v0.3.0 [INFO] [stderr] Downloaded actix-testing v1.0.1 [INFO] [stderr] Downloaded actix-router v0.2.7 [INFO] [stderr] Downloaded futures-executor v0.3.15 [INFO] [stderr] Downloaded resolv-conf v0.6.3 [INFO] [stderr] Downloaded actix v0.9.0 [INFO] [stderr] 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[INFO] [stderr] Downloaded futures-core v0.3.15 [INFO] [stderr] Downloaded actix-tls v1.0.0 [INFO] [stderr] Downloaded async-trait v0.1.50 [INFO] [stderr] Downloaded object v0.25.3 [INFO] [stderr] Downloaded h2 v0.2.7 [INFO] [stderr] Downloaded futures-sink v0.3.15 [INFO] [stderr] Downloaded ipconfig v0.2.2 [INFO] [stderr] Downloaded enum-as-inner v0.3.3 [INFO] [stderr] Downloaded encoding_rs v0.8.28 [INFO] [stderr] Downloaded actix-connect v1.0.2 [INFO] [stderr] Downloaded actix-codec v0.2.0 [INFO] [stderr] Downloaded synstructure v0.12.4 [INFO] [stderr] Downloaded crc32fast v1.2.1 [INFO] [stderr] Downloaded tracing-core v0.1.18 [INFO] [stderr] Downloaded actix-http v1.0.1 [INFO] [stderr] Downloaded failure_derive v0.1.8 [INFO] [stderr] Downloaded http v0.2.4 [INFO] [stderr] Downloaded aho-corasick v0.7.18 [INFO] [stderr] Downloaded actix-rt v1.1.1 [INFO] [stderr] Downloaded pin-project-lite v0.2.7 [INFO] [stderr] Downloaded tracing-futures v0.2.5 [INFO] [stderr] Downloaded bytes v1.0.1 [INFO] [stderr] Downloaded httparse v1.4.1 [INFO] [stderr] Downloaded indexmap v1.6.2 [INFO] [stderr] Downloaded lock_api v0.4.4 [INFO] [stderr] Downloaded parking_lot v0.11.1 [INFO] [stderr] Downloaded signal-hook-registry v1.4.0 [INFO] [stderr] Downloaded base64 v0.11.0 [INFO] [stderr] Downloaded awc v1.0.1 [INFO] [stderr] Downloaded language-tags v0.2.2 [INFO] [stderr] Downloaded actix-threadpool v0.3.3 [INFO] [stderr] Downloaded tokio v0.2.25 [INFO] [stderr] Downloaded ryu v1.0.5 [INFO] [stderr] Downloaded syn v1.0.73 [INFO] [stderr] Downloaded libc v0.2.97 [INFO] [stderr] Downloaded backtrace v0.3.60 [INFO] [stderr] Downloaded failure v0.1.8 [INFO] [stderr] Downloaded tracing v0.1.26 [INFO] [stderr] Downloaded derive_more v0.99.14 [INFO] [stderr] Downloaded serde_derive v1.0.126 [INFO] [stderr] Downloaded bytes v0.5.6 [INFO] [stderr] Downloaded futures-util v0.3.15 [INFO] [stderr] Downloaded pin-project-internal v0.4.28 [INFO] [stderr] Downloaded pin-project v0.4.28 [INFO] [stderr] Downloaded unicode-bidi v0.3.5 [INFO] [stderr] Downloaded futures-channel v0.3.15 [INFO] [stderr] Downloaded proc-macro2 v1.0.27 [INFO] [stderr] Downloaded futures-task v0.3.15 [INFO] [stderr] Downloaded actix-utils v1.0.6 [INFO] [stderr] Downloaded pin-project-lite v0.1.12 [INFO] [stderr] Downloaded actix-service v1.0.6 [INFO] [stderr] Downloaded slab v0.4.3 [INFO] [stderr] Downloaded futures v0.3.15 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 11074f4db348cc0bc3dc776350aae5d3d2e4764702f3dec174806207af93ffcd [INFO] running `Command { std: "docker" "start" "-a" "11074f4db348cc0bc3dc776350aae5d3d2e4764702f3dec174806207af93ffcd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "11074f4db348cc0bc3dc776350aae5d3d2e4764702f3dec174806207af93ffcd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "11074f4db348cc0bc3dc776350aae5d3d2e4764702f3dec174806207af93ffcd", kill_on_drop: false }` [INFO] [stdout] 11074f4db348cc0bc3dc776350aae5d3d2e4764702f3dec174806207af93ffcd [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 7551610e994ea318105b173244f4a1eaec7de23741f05ffb9020b223078feaa1 [INFO] running `Command { std: "docker" "start" "-a" "7551610e994ea318105b173244f4a1eaec7de23741f05ffb9020b223078feaa1", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.97 [INFO] [stderr] Compiling proc-macro2 v1.0.27 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling syn v1.0.73 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling futures-core v0.3.15 [INFO] [stderr] Compiling slab v0.4.3 [INFO] [stderr] Compiling futures-sink v0.3.15 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Compiling futures-channel v0.3.15 [INFO] [stderr] Compiling pin-project-lite v0.2.7 [INFO] [stderr] Compiling proc-macro-nested v0.1.7 [INFO] [stderr] Compiling futures-task v0.3.15 [INFO] [stderr] Compiling pin-project-lite v0.1.12 [INFO] [stderr] Compiling bytes v0.5.6 [INFO] [stderr] Compiling smallvec v1.6.1 [INFO] [stderr] Compiling futures-io v0.3.15 [INFO] [stderr] Compiling pin-project-internal v0.4.28 [INFO] [stderr] Compiling cc v1.0.68 [INFO] [stderr] Compiling instant v0.1.9 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Compiling lock_api v0.4.4 [INFO] [stderr] Compiling futures-macro v0.3.15 [INFO] [stderr] Compiling futures-util v0.3.15 [INFO] [stderr] Compiling convert_case v0.4.0 [INFO] [stderr] Compiling miniz_oxide v0.4.4 [INFO] [stderr] Compiling matches v0.1.8 [INFO] [stderr] Compiling getrandom v0.1.16 [INFO] [stderr] Compiling tinyvec v1.2.0 [INFO] [stderr] Compiling copyless v0.1.5 [INFO] [stderr] Compiling unicode-bidi v0.3.5 [INFO] [stderr] Compiling gimli v0.24.0 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling serde_derive v1.0.126 [INFO] [stderr] Compiling itoa v0.4.7 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Compiling form_urlencoded v1.0.1 [INFO] [stderr] Compiling ppv-lite86 v0.2.10 [INFO] [stderr] Compiling bytes v1.0.1 [INFO] [stderr] Compiling rustc-demangle v0.1.20 [INFO] [stderr] Compiling object v0.25.3 [INFO] [stderr] Compiling iovec v0.1.4 [INFO] [stderr] Compiling net2 v0.2.37 [INFO] [stderr] Compiling signal-hook-registry v1.4.0 [INFO] [stderr] Compiling parking_lot_core v0.8.3 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling socket2 v0.3.19 [INFO] [stderr] Compiling async-trait v0.1.50 [INFO] [stderr] Compiling unicode-segmentation v1.7.1 [INFO] [stderr] Compiling threadpool v1.8.1 [INFO] [stderr] Compiling parking_lot v0.11.1 [INFO] [stderr] Compiling mio v0.6.23 [INFO] [stderr] Compiling backtrace v0.3.60 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling serde v1.0.126 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling match_cfg v0.1.0 [INFO] [stderr] Compiling hostname v0.3.1 [INFO] [stderr] Compiling brotli-sys v0.3.2 [INFO] [stderr] Compiling http v0.2.4 [INFO] 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[INFO] [stderr] Compiling dtoa v0.4.8 [INFO] [stderr] Compiling flate2 v1.0.20 [INFO] [stderr] Compiling chrono v0.4.19 [INFO] [stderr] Compiling fxhash v0.2.1 [INFO] [stderr] Compiling crossbeam-utils v0.7.2 [INFO] [stderr] Compiling language-tags v0.2.2 [INFO] [stderr] Compiling sha1 v0.6.0 [INFO] [stderr] Compiling mime v0.3.16 [INFO] [stderr] Compiling idna v0.2.3 [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Compiling base64 v0.11.0 [INFO] [stderr] Compiling addr2line v0.15.2 [INFO] [stderr] Compiling bytestring v1.0.0 [INFO] [stderr] Compiling parking_lot_core v0.7.2 [INFO] [stderr] Compiling lock_api v0.3.4 [INFO] [stderr] Compiling crossbeam-channel v0.4.4 [INFO] [stderr] Compiling url v2.2.2 [INFO] [stderr] Compiling parking_lot v0.10.2 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling tokio-util v0.3.1 [INFO] [stderr] Compiling tokio-util v0.2.0 [INFO] [stderr] Compiling actix-codec v0.2.0 [INFO] [stderr] Compiling synstructure v0.12.4 [INFO] [stderr] Compiling derive_more v0.99.14 [INFO] [stderr] Compiling actix-macros v0.1.3 [INFO] [stderr] Compiling pin-project-internal v1.0.7 [INFO] [stderr] Compiling enum-as-inner v0.3.3 [INFO] [stderr] Compiling actix-web-codegen v0.2.2 [INFO] [stderr] Compiling actix_derive v0.5.0 [INFO] [stderr] Compiling failure v0.1.8 [INFO] [stderr] Compiling brotli2 v0.3.2 [INFO] [stderr] Compiling pin-project v1.0.7 [INFO] [stderr] Compiling tracing-futures v0.2.5 [INFO] [stderr] Compiling pin-project v0.4.28 [INFO] [stderr] Compiling actix-codec v0.3.0 [INFO] [stderr] Compiling actix-threadpool v0.3.3 [INFO] [stderr] Compiling futures-executor v0.3.15 [INFO] [stderr] Compiling actix-rt v1.1.1 [INFO] [stderr] Compiling actix-service v1.0.6 [INFO] [stderr] Compiling h2 v0.2.7 [INFO] [stderr] Compiling futures v0.3.15 [INFO] [stderr] Compiling trust-dns-proto v0.18.0-alpha.2 [INFO] [stderr] Compiling actix-utils v1.0.6 [INFO] [stderr] Compiling actix-utils v2.0.0 [INFO] [stderr] Compiling actix-tls v1.0.0 [INFO] [stderr] Compiling actix-server v1.0.4 [INFO] [stderr] Compiling actix-testing v1.0.1 [INFO] [stderr] Compiling trust-dns-resolver v0.18.0-alpha.2 [INFO] [stderr] Compiling actix-connect v1.0.2 [INFO] [stderr] Compiling serde_urlencoded v0.6.1 [INFO] [stderr] Compiling actix-router v0.2.7 [INFO] [stderr] Compiling actix-http v1.0.1 [INFO] [stderr] Compiling awc v1.0.1 [INFO] [stderr] Compiling actix v0.9.0 [INFO] [stderr] Compiling actix-web v2.0.0 [INFO] [stderr] Compiling actix-web-actors v2.0.0 [INFO] [stderr] Compiling echo_server v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `amt` [INFO] [stdout] --> src/udp.rs:10:14 [INFO] [stdout] | [INFO] [stdout] 10 | let (amt, src) = socket.recv_from(&mut buf)?; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_amt` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/udp.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | unsafe { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/udp.rs:5:13 [INFO] [stdout] | [INFO] [stdout] 5 | let mut socket = UdpSocket::bind(addr).expect("couldn't bind to address"); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | udp::run(); [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 10 | let _ = udp::run(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/tcp.rs:19:22 [INFO] [stdout] | [INFO] [stdout] 19 | panic!(err); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 19 | panic!("{}", err); [INFO] [stdout] | +++++ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 19 - panic!(err); [INFO] [stdout] 19 + std::panic::panic_any(err); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 05s [INFO] running `Command { std: "docker" "inspect" "7551610e994ea318105b173244f4a1eaec7de23741f05ffb9020b223078feaa1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7551610e994ea318105b173244f4a1eaec7de23741f05ffb9020b223078feaa1", kill_on_drop: false }` [INFO] [stdout] 7551610e994ea318105b173244f4a1eaec7de23741f05ffb9020b223078feaa1 [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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ad85bc524b1ad696e42061ad8338d382dffbdbe5" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 115350c729d34ddfca2b389873d3ed3a2c03a0e9c40539f95b2ba124eabe2750 [INFO] running `Command { std: "docker" "start" "-a" "115350c729d34ddfca2b389873d3ed3a2c03a0e9c40539f95b2ba124eabe2750", kill_on_drop: false }` [INFO] [stderr] Compiling echo_server v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused variable: `amt` [INFO] [stdout] --> src/udp.rs:10:14 [INFO] [stdout] | [INFO] [stdout] 10 | let (amt, src) = socket.recv_from(&mut buf)?; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_amt` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/udp.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | unsafe { [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/udp.rs:5:13 [INFO] [stdout] | [INFO] [stdout] 5 | let mut socket = UdpSocket::bind(addr).expect("couldn't bind to address"); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/main.rs:10:9 [INFO] [stdout] | [INFO] [stdout] 10 | udp::run(); [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)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 10 | let _ = udp::run(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: panic message is not a string literal [INFO] [stdout] --> src/tcp.rs:19:22 [INFO] [stdout] | [INFO] [stdout] 19 | panic!(err); [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default [INFO] [stdout] help: add a "{}" format string to `Display` the message [INFO] [stdout] | [INFO] [stdout] 19 | panic!("{}", err); [INFO] [stdout] | +++++ [INFO] [stdout] help: or use std::panic::panic_any instead [INFO] [stdout] | [INFO] [stdout] 19 - panic!(err); [INFO] [stdout] 19 + std::panic::panic_any(err); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.60s [INFO] running `Command { std: "docker" "inspect" "115350c729d34ddfca2b389873d3ed3a2c03a0e9c40539f95b2ba124eabe2750", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "115350c729d34ddfca2b389873d3ed3a2c03a0e9c40539f95b2ba124eabe2750", kill_on_drop: false }` [INFO] [stdout] 115350c729d34ddfca2b389873d3ed3a2c03a0e9c40539f95b2ba124eabe2750