[INFO] cloning repository https://github.com/0queue/boosttorrent2 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/0queue/boosttorrent2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0queue%2Fboosttorrent2", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0queue%2Fboosttorrent2'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] ec8523deb50ee9f4a00664aab31a6df150ee7cfd [INFO] checking 0queue/boosttorrent2 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F0queue%2Fboosttorrent2" "/workspace/builds/worker-116/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-116/source'... 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tokio-threadpool v0.1.8 [INFO] [stderr] Checking parking_lot v0.6.4 [INFO] [stderr] Checking tokio-reactor v0.1.6 [INFO] [stderr] Compiling derive-error v0.0.4 [INFO] [stderr] Checking tokio-fs v0.1.4 [INFO] [stderr] Checking tokio-uds v0.2.3 [INFO] [stderr] Checking tokio-tcp v0.1.2 [INFO] [stderr] Checking tokio-udp v0.1.2 [INFO] [stderr] Checking tokio v0.1.11 [INFO] [stderr] Checking h2 v0.1.13 [INFO] [stderr] Checking hyper v0.12.13 [INFO] [stderr] Checking boosttorrent2 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/boostencode/parse/mod.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | '0'...'9' => parse_bstring(bytes), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/metainfo/mod.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Receiver` [INFO] [stdout] --> src/server/mod.rs:2:36 [INFO] [stdout] | [INFO] [stdout] 2 | use futures::sync::mpsc::{channel, Receiver, Sender}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::default::Default` [INFO] [stdout] --> src/server/mod.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | use std::default::Default; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Deref` [INFO] [stdout] --> src/server/mod.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use std::ops::Deref; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `future`, `io::Error` [INFO] [stdout] --> src/server/mod.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | io::Error, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 25 | future, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Receiver` [INFO] [stdout] --> src/peer/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | Receiver, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `AsyncSink` [INFO] [stdout] --> src/peer/mod.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | AsyncSink, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `derive_error::Error` [INFO] [stdout] --> src/peer/message.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use derive_error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: `...` range patterns are deprecated [INFO] [stdout] --> src/boostencode/parse/mod.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | '0'...'9' => parse_bstring(bytes), [INFO] [stdout] | ^^^ help: use `..=` for an inclusive range [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::collections::HashMap` [INFO] [stdout] --> src/metainfo/mod.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use std::collections::HashMap; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Arc`, `RwLock` [INFO] [stdout] --> src/tracker/test.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | Arc, [INFO] [stdout] | ^^^ [INFO] [stdout] 12 | RwLock, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Receiver` [INFO] [stdout] --> src/server/mod.rs:2:36 [INFO] [stdout] | [INFO] [stdout] 2 | use futures::sync::mpsc::{channel, Receiver, Sender}; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::default::Default` [INFO] [stdout] --> src/server/mod.rs:12:5 [INFO] [stdout] | [INFO] [stdout] 12 | use std::default::Default; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::ops::Deref` [INFO] [stdout] --> src/server/mod.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | use std::ops::Deref; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `future`, `io::Error` [INFO] [stdout] --> src/server/mod.rs:17:5 [INFO] [stdout] | [INFO] [stdout] 17 | io::Error, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 25 | future, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Receiver` [INFO] [stdout] --> src/peer/mod.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | Receiver, [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `AsyncSink` [INFO] [stdout] --> src/peer/mod.rs:13:9 [INFO] [stdout] | [INFO] [stdout] 13 | AsyncSink, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `derive_error::Error` [INFO] [stdout] --> src/peer/message.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use derive_error::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Failure` [INFO] [stdout] --> src/tracker/mod.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | Failure(String), [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Stopped` [INFO] [stdout] --> src/tracker/mod.rs:99:5 [INFO] [stdout] | [INFO] [stdout] 99 | Stopped, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Completed` [INFO] [stdout] --> src/tracker/mod.rs:100:5 [INFO] [stdout] | [INFO] [stdout] 100 | Completed, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `cancel` [INFO] [stdout] --> src/tracker/mod.rs:232:12 [INFO] [stdout] | [INFO] [stdout] 232 | pub fn cancel(&mut self, left: u64, uploaded: u64, downloaded: u64) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `finish` [INFO] [stdout] --> src/tracker/mod.rs:237:12 [INFO] [stdout] | [INFO] [stdout] 237 | pub fn finish(&mut self, left: u64, uploaded: u64, downloaded: u64) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `refresh` [INFO] [stdout] --> src/tracker/mod.rs:242:12 [INFO] [stdout] | [INFO] [stdout] 242 | pub fn refresh(&mut self, left: u64, uploaded: u64, downloaded: u64) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `data` [INFO] [stdout] --> src/piece/mod.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | data: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `hasher` [INFO] [stdout] --> src/piece/mod.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | hasher: Sha1, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `hash` [INFO] [stdout] --> src/piece/mod.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | hash: [u8; 20], [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sub_pieces` [INFO] [stdout] --> src/piece/mod.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | sub_pieces: BitVec [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/piece/mod.rs:18:12 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn new(piece_size: u32, piece_hash: [u8;20]) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `verify` [INFO] [stdout] --> src/piece/mod.rs:29:12 [INFO] [stdout] | [INFO] [stdout] 29 | pub fn verify(&mut self) -> bool { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `uploaded_sender` [INFO] [stdout] --> src/peer/mod.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 25 | uploaded_sender: Sender, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `downloaded_sender` [INFO] [stdout] --> src/peer/mod.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 26 | downloaded_sender: Sender, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `finished_piece_sender` [INFO] [stdout] --> src/peer/mod.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | finished_piece_sender: Sender<(Piece, Sender, BitVec)>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `peers_pieces` [INFO] [stdout] --> src/peer/mod.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | peers_pieces: BitVec, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/boostencode/mod.rs:137:25 [INFO] [stdout] | [INFO] [stdout] 137 | write!(f, ", "); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/boostencode/mod.rs:140:21 [INFO] [stdout] | [INFO] [stdout] 140 | write!(f, "{}", val); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/boostencode/mod.rs:147:17 [INFO] [stdout] | [INFO] [stdout] 147 | writeln!(f, "{{"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/boostencode/mod.rs:149:21 [INFO] [stdout] | [INFO] [stdout] 149 | writeln!(f, " {} => {}", str::from_utf8(k).unwrap_or("[...bytes...]"), v); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 29 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Failure` [INFO] [stdout] --> src/tracker/mod.rs:76:5 [INFO] [stdout] | [INFO] [stdout] 76 | Failure(String), [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Stopped` [INFO] [stdout] --> src/tracker/mod.rs:99:5 [INFO] [stdout] | [INFO] [stdout] 99 | Stopped, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant is never constructed: `Completed` [INFO] [stdout] --> src/tracker/mod.rs:100:5 [INFO] [stdout] | [INFO] [stdout] 100 | Completed, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `cancel` [INFO] [stdout] --> src/tracker/mod.rs:232:12 [INFO] [stdout] | [INFO] [stdout] 232 | pub fn cancel(&mut self, left: u64, uploaded: u64, downloaded: u64) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `finish` [INFO] [stdout] --> src/tracker/mod.rs:237:12 [INFO] [stdout] | [INFO] [stdout] 237 | pub fn finish(&mut self, left: u64, uploaded: u64, downloaded: u64) { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `refresh` [INFO] [stdout] --> src/tracker/mod.rs:242:12 [INFO] [stdout] | [INFO] [stdout] 242 | pub fn refresh(&mut self, left: u64, uploaded: u64, downloaded: u64) { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `data` [INFO] [stdout] --> src/piece/mod.rs:9:5 [INFO] [stdout] | [INFO] [stdout] 9 | data: Vec, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `hasher` [INFO] [stdout] --> src/piece/mod.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | hasher: Sha1, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `hash` [INFO] [stdout] --> src/piece/mod.rs:11:5 [INFO] [stdout] | [INFO] [stdout] 11 | hash: [u8; 20], [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `sub_pieces` [INFO] [stdout] --> src/piece/mod.rs:14:5 [INFO] [stdout] | [INFO] [stdout] 14 | sub_pieces: BitVec [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/piece/mod.rs:18:12 [INFO] [stdout] | [INFO] [stdout] 18 | pub fn new(piece_size: u32, piece_hash: [u8;20]) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `verify` [INFO] [stdout] --> src/piece/mod.rs:29:12 [INFO] [stdout] | [INFO] [stdout] 29 | pub fn verify(&mut self) -> bool { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `uploaded_sender` [INFO] [stdout] --> src/peer/mod.rs:25:5 [INFO] [stdout] | [INFO] [stdout] 25 | uploaded_sender: Sender, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `downloaded_sender` [INFO] [stdout] --> src/peer/mod.rs:26:5 [INFO] [stdout] | [INFO] [stdout] 26 | downloaded_sender: Sender, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `finished_piece_sender` [INFO] [stdout] --> src/peer/mod.rs:29:5 [INFO] [stdout] | [INFO] [stdout] 29 | finished_piece_sender: Sender<(Piece, Sender, BitVec)>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field is never read: `peers_pieces` [INFO] [stdout] --> src/peer/mod.rs:30:5 [INFO] [stdout] | [INFO] [stdout] 30 | peers_pieces: BitVec, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/boostencode/mod.rs:137:25 [INFO] [stdout] | [INFO] [stdout] 137 | write!(f, ", "); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/boostencode/mod.rs:140:21 [INFO] [stdout] | [INFO] [stdout] 140 | write!(f, "{}", val); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/boostencode/mod.rs:147:17 [INFO] [stdout] | [INFO] [stdout] 147 | writeln!(f, "{{"); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/boostencode/mod.rs:149:21 [INFO] [stdout] | [INFO] [stdout] 149 | writeln!(f, " {} => {}", str::from_utf8(k).unwrap_or("[...bytes...]"), v); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: this warning originates in the macro `writeln` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 30 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 38.46s [INFO] running `Command { std: "docker" "inspect" "1a1cbd7521ac6cc6bcdc684d01361c6fcf2bc4efce4da099efb00a9f2479abae", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1a1cbd7521ac6cc6bcdc684d01361c6fcf2bc4efce4da099efb00a9f2479abae", kill_on_drop: false }` [INFO] [stdout] 1a1cbd7521ac6cc6bcdc684d01361c6fcf2bc4efce4da099efb00a9f2479abae