[INFO] updating cached repository https://github.com/tommyjk/kv-server [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] [stderr] From https://github.com/tommyjk/kv-server [INFO] [stderr] 7386053..1e9d4fd master -> master [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 1e9d4fd41746072b4fc42ef4c9601347447dda56 [INFO] checking tommyjk/kv-server against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftommyjk%2Fkv-server" "/workspace/builds/worker-5/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/tommyjk/kv-server on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494 [INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/tommyjk/kv-server [INFO] finished tweaking git repo https://github.com/tommyjk/kv-server [INFO] tweaked toml for git repo https://github.com/tommyjk/kv-server written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate git repo https://github.com/tommyjk/kv-server already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "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] abf9d0a23e98010b4838f7a4fe58ae7c2f2b1c0f0b159d84489cc447cc2ae69e [INFO] running `"docker" "start" "-a" "abf9d0a23e98010b4838f7a4fe58ae7c2f2b1c0f0b159d84489cc447cc2ae69e"` [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling slog v2.5.2 [INFO] [stderr] Checking historian v4.0.3 [INFO] [stderr] Checking panic-control v0.1.4 [INFO] [stderr] Checking lazy_static v1.4.0 [INFO] [stderr] Compiling bincode v1.1.4 [INFO] [stderr] Compiling rand_chacha v0.2.0 [INFO] [stderr] Checking log v0.4.8 [INFO] [stderr] Compiling num-traits v0.2.8 [INFO] [stderr] Checking num_cpus v1.11.1 [INFO] [stderr] Checking atty v0.2.12 [INFO] [stderr] Checking fs2 v0.4.3 [INFO] [stderr] Checking criterion-plot v0.4.0 [INFO] [stderr] Checking aho-corasick v0.7.4 [INFO] [stderr] Checking term v0.5.2 [INFO] [stderr] Compiling serde_derive v1.0.97 [INFO] [stderr] Compiling structopt-derive v0.2.18 [INFO] [stderr] Checking crossbeam-utils v0.7.0 [INFO] [stderr] Checking crossbeam-utils v0.6.6 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking getrandom v0.1.6 [INFO] [stderr] Checking crossbeam-utils v0.6.6 (http://github.com/crossbeam-rs/crossbeam.git?rev=31fc7e6#31fc7e62) [INFO] [stderr] Checking c2-chacha v0.2.2 [INFO] [stderr] Checking broadcaster v0.2.6 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Checking mio v0.6.21 [INFO] [stderr] Checking kv-log-macro v1.0.4 [INFO] [stderr] Checking crossbeam-epoch v0.8.0 [INFO] [stderr] Checking crossbeam-queue v0.2.0 [INFO] [stderr] Checking crossbeam-channel v0.4.0 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 [INFO] [stderr] Checking crossbeam-channel v0.3.9 [INFO] [stderr] Checking async-task v1.0.0 [INFO] [stderr] Checking rand_core v0.5.0 [INFO] [stderr] Checking regex v1.1.9 [INFO] [stderr] Checking crossbeam-epoch v0.7.2 (http://github.com/crossbeam-rs/crossbeam.git?rev=31fc7e6#31fc7e62) [INFO] [stderr] Checking crossbeam-deque v0.7.2 [INFO] [stderr] Checking rand_xoshiro v0.3.1 [INFO] [stderr] Checking rand_os v0.2.2 [INFO] [stderr] Checking slog-async v2.3.0 [INFO] [stderr] Checking crossbeam-skiplist v0.0.0 (http://github.com/crossbeam-rs/crossbeam.git?rev=31fc7e6#31fc7e62) [INFO] [stderr] Checking rayon-core v1.7.0 [INFO] [stderr] Checking rand v0.7.0 [INFO] [stderr] Checking mio-uds v0.6.7 [INFO] [stderr] Checking num-integer v0.1.41 [INFO] [stderr] Checking float-cmp v0.4.0 [INFO] [stderr] Checking rayon v1.3.0 [INFO] [stderr] Checking chrono v0.4.8 [INFO] [stderr] Checking predicates v1.0.1 [INFO] [stderr] Checking tempfile v3.1.0 [INFO] [stderr] Checking structopt v0.2.18 [INFO] [stderr] Checking slog-term v2.4.1 [INFO] [stderr] Checking serde v1.0.99 [INFO] [stderr] Compiling async-attributes v1.1.1 [INFO] [stderr] Compiling async-trait v0.1.21 [INFO] [stderr] Checking async-std v1.4.0 [INFO] [stderr] Checking serde_bytes v0.11.2 [INFO] [stderr] Checking serde_json v1.0.40 [INFO] [stderr] Checking bstr v0.2.8 [INFO] [stderr] Checking pagecache v0.19.2 [INFO] [stderr] Checking csv v1.1.1 [INFO] [stderr] Checking escargot v0.4.0 [INFO] [stderr] Checking tinytemplate v1.0.2 [INFO] [stderr] Checking criterion v0.3.0 [INFO] [stderr] Checking assert_cmd v0.11.1 [INFO] [stderr] Checking sled v0.27.0 [INFO] [stderr] Checking kvs v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `time::Instant` [INFO] [stderr] --> src/kvs/kvs.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | time::Instant, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `KvsError` [INFO] [stderr] --> src/protocol/stream.rs:9:18 [INFO] [stderr] | [INFO] [stderr] 9 | use crate::kvs::{KvsError, Result}; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string() [INFO] [stderr] --> src/server.rs:64:92 [INFO] [stderr] | [INFO] [stderr] 64 | Err(e) => error!(self.log, "Error establishing connection"; "message" => e.description()), [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `result` [INFO] [stderr] --> src/protocol/client.rs:49:25 [INFO] [stderr] | [INFO] [stderr] 49 | let mut result = self.stream.read(&mut answer[..]).await?; [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_result` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `time::Instant` [INFO] [stderr] --> src/kvs/kvs.rs:19:5 [INFO] [stderr] | [INFO] [stderr] 19 | time::Instant, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `KvsError` [INFO] [stderr] --> src/protocol/stream.rs:9:18 [INFO] [stderr] | [INFO] [stderr] 9 | use crate::kvs::{KvsError, Result}; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/protocol/client.rs:41:17 [INFO] [stderr] | [INFO] [stderr] 41 | let mut result = self.stream.read(&mut answer[..]).await?; [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: variable does not need to be mutable [INFO] [stderr] --> src/protocol/client.rs:49:21 [INFO] [stderr] | [INFO] [stderr] 49 | let mut result = self.stream.read(&mut answer[..]).await?; [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/kvs/kvs.rs:547:9 [INFO] [stderr] | [INFO] [stderr] 547 | bufwriter.write_all(&self.min_fileid.load(Ordering::Relaxed).to_le_bytes()).await; [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/server.rs:88:17 [INFO] [stderr] | [INFO] [stderr] 88 | / conn.send(response).await.map_err(|e| { [INFO] [stderr] 89 | | error!(log, "Something went wrong in response to client {:?}", e); [INFO] [stderr] 90 | | }); [INFO] [stderr] | |___________________^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string() [INFO] [stderr] --> src/server.rs:64:92 [INFO] [stderr] | [INFO] [stderr] 64 | Err(e) => error!(self.log, "Error establishing connection"; "message" => e.description()), [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `result` [INFO] [stderr] --> src/protocol/client.rs:49:25 [INFO] [stderr] | [INFO] [stderr] 49 | let mut result = self.stream.read(&mut answer[..]).await?; [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_result` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/protocol/client.rs:41:17 [INFO] [stderr] | [INFO] [stderr] 41 | let mut result = self.stream.read(&mut answer[..]).await?; [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: variable does not need to be mutable [INFO] [stderr] --> src/protocol/client.rs:49:21 [INFO] [stderr] | [INFO] [stderr] 49 | let mut result = self.stream.read(&mut answer[..]).await?; [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/kvs/kvs.rs:547:9 [INFO] [stderr] | [INFO] [stderr] 547 | bufwriter.write_all(&self.min_fileid.load(Ordering::Relaxed).to_le_bytes()).await; [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/server.rs:88:17 [INFO] [stderr] | [INFO] [stderr] 88 | / conn.send(response).await.map_err(|e| { [INFO] [stderr] 89 | | error!(log, "Something went wrong in response to client {:?}", e); [INFO] [stderr] 90 | | }); [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:143:5 [INFO] [stderr] | [INFO] [stderr] 143 | / task::block_on(async { [INFO] [stderr] 144 | | check_your_engines(&db_path, &engine).await.map_err(|e| { [INFO] [stderr] 145 | | error!(log, "Check engine failed: {}", e); [INFO] [stderr] 146 | | panic!() [INFO] [stderr] 147 | | }) [INFO] [stderr] 148 | | }); [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 import: `Mutex` [INFO] [stderr] --> tests/kv_store.rs:3:37 [INFO] [stderr] | [INFO] [stderr] 3 | use async_std::sync::{Arc, Barrier, Mutex}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::thread` [INFO] [stderr] --> tests/kv_store.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use std::thread; [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/bin/kvs-server.rs:143:5 [INFO] [stderr] | [INFO] [stderr] 143 | / task::block_on(async { [INFO] [stderr] 144 | | check_your_engines(&db_path, &engine).await.map_err(|e| { [INFO] [stderr] 145 | | error!(log, "Check engine failed: {}", e); [INFO] [stderr] 146 | | panic!() [INFO] [stderr] 147 | | }) [INFO] [stderr] 148 | | }); [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 imports: `sync::Arc`, `thread`, `time::Instant` [INFO] [stderr] --> benches/kvserver.rs:15:5 [INFO] [stderr] | [INFO] [stderr] 15 | sync::Arc, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] 16 | thread, [INFO] [stderr] | ^^^^^^ [INFO] [stderr] 17 | time::Instant, [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `rayon_pool` [INFO] [stderr] --> benches/kvserver.rs:78:49 [INFO] [stderr] | [INFO] [stderr] 78 | group.bench_with_input(bench_id, &pool, |b, rayon_pool| { [INFO] [stderr] | ^^^^^^^^^^ help: consider prefixing with an underscore: `_rayon_pool` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `handle` [INFO] [stderr] --> benches/kvserver.rs:71:9 [INFO] [stderr] | [INFO] [stderr] 71 | let handle = task::spawn(async move { [INFO] [stderr] | ^^^^^^ help: consider prefixing with an underscore: `_handle` [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2m 04s [INFO] running `"docker" "inspect" "abf9d0a23e98010b4838f7a4fe58ae7c2f2b1c0f0b159d84489cc447cc2ae69e"` [INFO] running `"docker" "rm" "-f" "abf9d0a23e98010b4838f7a4fe58ae7c2f2b1c0f0b159d84489cc447cc2ae69e"` [INFO] [stdout] abf9d0a23e98010b4838f7a4fe58ae7c2f2b1c0f0b159d84489cc447cc2ae69e