[INFO] updating cached repository https://github.com/fvkramer/kv-client [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 038cf5dd959dee4bdd09b6689ed978daa9552199 [INFO] checking fvkramer/kv-client against master#be493fe8cc40c3d3f6030a1313c1ff747fce770d for pr-69129 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffvkramer%2Fkv-client" "/workspace/builds/worker-12/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/fvkramer/kv-client on toolchain be493fe8cc40c3d3f6030a1313c1ff747fce770d [INFO] running `"/workspace/cargo-home/bin/cargo" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/fvkramer/kv-client [INFO] finished tweaking git repo https://github.com/fvkramer/kv-client [INFO] tweaked toml for git repo https://github.com/fvkramer/kv-client written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/fvkramer/kv-client already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+be493fe8cc40c3d3f6030a1313c1ff747fce770d" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 1695bc8b71fea4b71155f3de548ec2bb72c977443d9c9f680f60b82d55b6dc1a [INFO] running `"docker" "start" "-a" "1695bc8b71fea4b71155f3de548ec2bb72c977443d9c9f680f60b82d55b6dc1a"` [INFO] [stderr] Compiling syn v0.15.35 [INFO] [stderr] Compiling backtrace v0.3.30 [INFO] [stderr] Checking crossbeam-utils v0.7.0 [INFO] [stderr] Checking memchr v2.2.0 [INFO] [stderr] Compiling cast v0.2.3 [INFO] [stderr] Checking num_cpus v1.11.1 [INFO] [stderr] Checking num-integer v0.1.41 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking slog-async v2.3.0 [INFO] [stderr] Checking float-cmp v0.4.0 [INFO] [stderr] Checking term v0.6.1 [INFO] [stderr] Checking rand v0.6.5 [INFO] [stderr] Checking serde_json v1.0.44 [INFO] [stderr] Checking chrono v0.4.10 [INFO] [stderr] Checking crossbeam-epoch v0.8.0 [INFO] [stderr] Checking crossbeam-queue v0.2.1 [INFO] [stderr] Checking aho-corasick v0.7.3 [INFO] [stderr] Checking csv-core v0.1.6 [INFO] [stderr] Checking bstr v0.2.8 [INFO] [stderr] Checking criterion-plot v0.3.1 [INFO] [stderr] Checking crossbeam-deque v0.7.2 [INFO] [stderr] Checking regex v1.1.7 [INFO] [stderr] Checking tempfile v3.0.8 [INFO] [stderr] Checking rayon-core v1.7.0 [INFO] [stderr] Checking slog-term v2.4.2 [INFO] [stderr] Checking csv v1.1.1 [INFO] [stderr] Checking tinytemplate v1.0.3 [INFO] [stderr] Checking escargot v0.4.0 [INFO] [stderr] Checking rayon v1.3.0 [INFO] [stderr] Checking predicates v1.0.1 [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stderr] Compiling synstructure v0.10.2 [INFO] [stderr] Checking criterion v0.2.11 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Checking failure v0.1.5 [INFO] [stderr] Checking kvs v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused variable: `key` [INFO] [stderr] --> src/kv.rs:16:23 [INFO] [stderr] | [INFO] [stderr] 16 | fn set(&mut self, key: String, value: String) -> Result<()> { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_key` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `value` [INFO] [stderr] --> src/kv.rs:16:36 [INFO] [stderr] | [INFO] [stderr] 16 | fn set(&mut self, key: String, value: String) -> Result<()> { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_value` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `key` [INFO] [stderr] --> src/kv.rs:20:23 [INFO] [stderr] | [INFO] [stderr] 20 | fn get(&mut self, key: String) -> Result> { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_key` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `key` [INFO] [stderr] --> src/kv.rs:24:26 [INFO] [stderr] | [INFO] [stderr] 24 | fn remove(&mut self, key: String) -> Result<()> { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_key` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `key` [INFO] [stderr] --> src/kv.rs:16:23 [INFO] [stderr] | [INFO] [stderr] 16 | fn set(&mut self, key: String, value: String) -> Result<()> { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_key` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `value` [INFO] [stderr] --> src/kv.rs:16:36 [INFO] [stderr] | [INFO] [stderr] 16 | fn set(&mut self, key: String, value: String) -> Result<()> { [INFO] [stderr] | ^^^^^ help: consider prefixing with an underscore: `_value` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `key` [INFO] [stderr] --> src/kv.rs:20:23 [INFO] [stderr] | [INFO] [stderr] 20 | fn get(&mut self, key: String) -> Result> { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_key` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `key` [INFO] [stderr] --> src/kv.rs:24:26 [INFO] [stderr] | [INFO] [stderr] 24 | fn remove(&mut self, key: String) -> Result<()> { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_key` [INFO] [stderr] [INFO] [stderr] warning: unused import: `Shutdown` [INFO] [stderr] --> src/bin/kvs-client.rs:3:26 [INFO] [stderr] | [INFO] [stderr] 3 | use std::net::{Ipv4Addr, Shutdown, SocketAddr, SocketAddrV4, TcpStream}; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::time::Duration` [INFO] [stderr] --> src/bin/kvs-client.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std::time::Duration; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/bin/kvs-client.rs:23:5 [INFO] [stderr] | [INFO] [stderr] 22 | panic!("no args"); [INFO] [stderr] | ------------------ any code following this expression is unreachable [INFO] [stderr] 23 | Ok(()) [INFO] [stderr] | ^^^^^^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/bin/kvs-client.rs:35:5 [INFO] [stderr] | [INFO] [stderr] 27 | / loop { [INFO] [stderr] 28 | | let mut input = String::new(); [INFO] [stderr] 29 | | print!("> "); [INFO] [stderr] 30 | | io::stdout().flush(); [INFO] [stderr] ... | [INFO] [stderr] 33 | | transmit_client_input(stream, input.trim()); [INFO] [stderr] 34 | | } [INFO] [stderr] | |_____- any code following this expression is unreachable [INFO] [stderr] 35 | Ok(()) [INFO] [stderr] | ^^^^^^ unreachable expression [INFO] [stderr] [INFO] [stderr] warning: unused import: `Shutdown` [INFO] [stderr] --> src/bin/kvs-client.rs:3:26 [INFO] [stderr] | [INFO] [stderr] 3 | use std::net::{Ipv4Addr, Shutdown, SocketAddr, SocketAddrV4, TcpStream}; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::time::Duration` [INFO] [stderr] --> src/bin/kvs-client.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use std::time::Duration; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/kvs-client.rs:11:15 [INFO] [stderr] | [INFO] [stderr] 11 | if let Ok(mut stream) = TcpStream::connect(&addr) { [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `run_command_prompt` [INFO] [stderr] --> src/bin/kvs-client.rs:26:4 [INFO] [stderr] | [INFO] [stderr] 26 | fn run_command_prompt(stream: &mut TcpStream) -> Result<()> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `transmit_client_input` [INFO] [stderr] --> src/bin/kvs-client.rs:38:4 [INFO] [stderr] | [INFO] [stderr] 38 | fn transmit_client_input(stream: &mut TcpStream, input: &str) -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/kvs-client.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | Command::new("clear").spawn()?.wait(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/kvs-client.rs:30:9 [INFO] [stderr] | [INFO] [stderr] 30 | io::stdout().flush(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/kvs-client.rs:33:9 [INFO] [stderr] | [INFO] [stderr] 33 | transmit_client_input(stream, input.trim()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/bin/kvs-client.rs:23:5 [INFO] [stderr] | [INFO] [stderr] 22 | panic!("no args"); [INFO] [stderr] | ------------------ any code following this expression is unreachable [INFO] [stderr] 23 | Ok(()) [INFO] [stderr] | ^^^^^^ unreachable expression [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unreachable_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unreachable expression [INFO] [stderr] --> src/bin/kvs-client.rs:35:5 [INFO] [stderr] | [INFO] [stderr] 27 | / loop { [INFO] [stderr] 28 | | let mut input = String::new(); [INFO] [stderr] 29 | | print!("> "); [INFO] [stderr] 30 | | io::stdout().flush(); [INFO] [stderr] ... | [INFO] [stderr] 33 | | transmit_client_input(stream, input.trim()); [INFO] [stderr] 34 | | } [INFO] [stderr] | |_____- any code following this expression is unreachable [INFO] [stderr] 35 | Ok(()) [INFO] [stderr] | ^^^^^^ unreachable expression [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/bin/kvs-client.rs:11:15 [INFO] [stderr] | [INFO] [stderr] 11 | if let Ok(mut stream) = TcpStream::connect(&addr) { [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `run_command_prompt` [INFO] [stderr] --> src/bin/kvs-client.rs:26:4 [INFO] [stderr] | [INFO] [stderr] 26 | fn run_command_prompt(stream: &mut TcpStream) -> Result<()> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: function is never used: `transmit_client_input` [INFO] [stderr] --> src/bin/kvs-client.rs:38:4 [INFO] [stderr] | [INFO] [stderr] 38 | fn transmit_client_input(stream: &mut TcpStream, input: &str) -> Result { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/kvs-client.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | Command::new("clear").spawn()?.wait(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/kvs-client.rs:30:9 [INFO] [stderr] | [INFO] [stderr] 30 | io::stdout().flush(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/kvs-client.rs:33:9 [INFO] [stderr] | [INFO] [stderr] 33 | transmit_client_input(stream, input.trim()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::BufReader` [INFO] [stderr] --> src/bin/kvs-server.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::io::BufReader; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/bin/kvs-server.rs:17:16 [INFO] [stderr] | [INFO] [stderr] 17 | if (size > 0) { [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::BufReader` [INFO] [stderr] --> src/bin/kvs-server.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use std::io::BufReader; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/bin/kvs-server.rs:17:16 [INFO] [stderr] | [INFO] [stderr] 17 | if (size > 0) { [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/kvs-server.rs:77:13 [INFO] [stderr] | [INFO] [stderr] 77 | handle_client(stream.unwrap()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/kvs-server.rs:85:13 [INFO] [stderr] | [INFO] [stderr] 85 | handle_client(stream.unwrap()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/kvs-server.rs:77:13 [INFO] [stderr] | [INFO] [stderr] 77 | handle_client(stream.unwrap()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/kvs-server.rs:85:13 [INFO] [stderr] | [INFO] [stderr] 85 | handle_client(stream.unwrap()); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused import: `KvsEngine` [INFO] [stderr] --> tests/kv_store.rs:1:20 [INFO] [stderr] | [INFO] [stderr] 1 | use kvs::{KvStore, KvsEngine, Result}; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 48.53s [INFO] running `"docker" "inspect" "1695bc8b71fea4b71155f3de548ec2bb72c977443d9c9f680f60b82d55b6dc1a"` [INFO] running `"docker" "rm" "-f" "1695bc8b71fea4b71155f3de548ec2bb72c977443d9c9f680f60b82d55b6dc1a"` [INFO] [stdout] 1695bc8b71fea4b71155f3de548ec2bb72c977443d9c9f680f60b82d55b6dc1a