[INFO] cloning repository https://github.com/tyan-boot/pingcap-question [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tyan-boot/pingcap-question" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyan-boot%2Fpingcap-question", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyan-boot%2Fpingcap-question'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f7ee6939293bcb13f9c1ad5baaaa4a1ce1d7dfe4 [INFO] testing tyan-boot/pingcap-question against 1.45.2 for beta-1.46-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftyan-boot%2Fpingcap-question" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/tyan-boot/pingcap-question on toolchain 1.45.2 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/tyan-boot/pingcap-question [INFO] finished tweaking git repo https://github.com/tyan-boot/pingcap-question [INFO] tweaked toml for git repo https://github.com/tyan-boot/pingcap-question written to /workspace/builds/worker-0/source/Cargo.toml [INFO] crate git repo https://github.com/tyan-boot/pingcap-question already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] aa980e80ff0bf9c143faa471bce1b954a2e8b0d4c6f8a79c1073fa8d457bba1c [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "aa980e80ff0bf9c143faa471bce1b954a2e8b0d4c6f8a79c1073fa8d457bba1c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "aa980e80ff0bf9c143faa471bce1b954a2e8b0d4c6f8a79c1073fa8d457bba1c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aa980e80ff0bf9c143faa471bce1b954a2e8b0d4c6f8a79c1073fa8d457bba1c", kill_on_drop: false }` [INFO] [stdout] aa980e80ff0bf9c143faa471bce1b954a2e8b0d4c6f8a79c1073fa8d457bba1c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] ba827516805bf95ca4a4d38176a4202b367feb0a2dc96feffd772ce113573413 [INFO] running `Command { std: "docker" "start" "-a" "ba827516805bf95ca4a4d38176a4202b367feb0a2dc96feffd772ce113573413", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.3 [INFO] [stderr] Compiling getrandom v0.1.12 [INFO] [stderr] Compiling cc v1.0.42 [INFO] [stderr] Compiling syn v0.15.44 [INFO] [stderr] Compiling ppv-lite86 v0.2.5 [INFO] [stderr] Compiling serde v1.0.99 [INFO] [stderr] Compiling bitflags v1.1.0 [INFO] [stderr] Compiling remove_dir_all v0.5.2 [INFO] [stderr] Compiling bincode v1.1.4 [INFO] [stderr] Compiling atty v0.2.13 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling c2-chacha v0.2.2 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling backtrace-sys v0.1.31 [INFO] [stderr] Compiling syn v1.0.5 [INFO] [stderr] Compiling rand_chacha v0.2.1 [INFO] [stderr] Compiling rand v0.7.0 [INFO] [stderr] Compiling backtrace v0.3.37 [INFO] [stderr] Compiling tempfile v3.1.0 [INFO] [stderr] Compiling synstructure v0.10.2 [INFO] [stderr] Compiling serde_derive v1.0.99 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Compiling failure v0.1.5 [INFO] [stderr] Compiling project-pingcap-algo v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::fs::File` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fs::File; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::BufReader` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::BufReader; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::path::Path` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::path::Path; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `bincode::ErrorKind` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use bincode::ErrorKind; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `failure::Error` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use failure::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `BufRead` [INFO] [stdout] --> src/v2/count.rs:5:32 [INFO] [stdout] | [INFO] [stdout] 5 | use std::io::{Read, BufReader, BufRead}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BufRead`, `Read`, `Write` [INFO] [stdout] --> src/v2/io.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{Read, BufReader, BufRead, Write, Seek, SeekFrom}; [INFO] [stdout] | ^^^^ ^^^^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process::id` [INFO] [stdout] --> src/v2/io.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::process::id; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/v2/io.rs:80:41 [INFO] [stdout] | [INFO] [stdout] 80 | it.seek(SeekFrom::Start((0))); [INFO] [stdout] | ^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/v2/io.rs:125:41 [INFO] [stdout] | [INFO] [stdout] 125 | it.seek(SeekFrom::Start((0))); [INFO] [stdout] | ^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `offset` [INFO] [stdout] --> src/v2/count.rs:29:26 [INFO] [stdout] | [INFO] [stdout] 29 | Some((count, offset)) => { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_offset` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `buf` [INFO] [stdout] --> src/v2/io.rs:105:25 [INFO] [stdout] | [INFO] [stdout] 105 | let buf = bincode::serialized_size(&wo); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/v2/count.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | let mut item = self.map.get_mut(&word); [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: variable does not need to be mutable [INFO] [stdout] --> src/v2/io.rs:46:24 [INFO] [stdout] | [INFO] [stdout] 46 | while let Some(mut file) = self.big_chunks.pop() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Counter` [INFO] [stdout] --> src/v1/count.rs:12:12 [INFO] [stdout] | [INFO] [stdout] 12 | pub struct Counter { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/v1/count.rs:17:12 [INFO] [stdout] | [INFO] [stdout] 17 | pub fn new() -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `count` [INFO] [stdout] --> src/v1/count.rs:24:12 [INFO] [stdout] | [INFO] [stdout] 24 | pub fn count(&mut self, key: String, offset: u64) -> u64 { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `flush` [INFO] [stdout] --> src/v1/count.rs:44:12 [INFO] [stdout] | [INFO] [stdout] 44 | pub fn flush(&mut self) -> Result { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `MergeCounter` [INFO] [stdout] --> src/v1/merge.rs:6:12 [INFO] [stdout] | [INFO] [stdout] 6 | pub struct MergeCounter { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/v1/merge.rs:13:12 [INFO] [stdout] | [INFO] [stdout] 13 | pub fn new() -> Result { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `count` [INFO] [stdout] --> src/v1/merge.rs:21:12 [INFO] [stdout] | [INFO] [stdout] 21 | pub fn count(&mut self, key: String, other_count: u64, offset: u64) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `get_ans` [INFO] [stdout] --> src/v1/merge.rs:59:12 [INFO] [stdout] | [INFO] [stdout] 59 | pub fn get_ans(&mut self) -> Option<(String, u64)> { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `MergePair` [INFO] [stdout] --> src/v1.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | struct MergePair(String, u64, u64, BufReader); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Count` [INFO] [stdout] --> src/v1.rs:19:8 [INFO] [stdout] | [INFO] [stdout] 19 | struct Count { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/v1.rs:28:12 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn new>(path: P) -> Result { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `count_chunk` [INFO] [stdout] --> src/v1.rs:42:8 [INFO] [stdout] | [INFO] [stdout] 42 | fn count_chunk(&mut self) -> Result<(), Error> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `merge` [INFO] [stdout] --> src/v1.rs:81:8 [INFO] [stdout] | [INFO] [stdout] 81 | fn merge(&mut self) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `solve` [INFO] [stdout] --> src/v1.rs:125:12 [INFO] [stdout] | [INFO] [stdout] 125 | pub fn solve(&mut self) -> Option { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/v2/count.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | chunk.read_to_end(&mut buff); [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] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/v2/io.rs:67:25 [INFO] [stdout] | [INFO] [stdout] 67 | bincode::serialize_into(&mut chunk, &wo); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/v2/io.rs:80:17 [INFO] [stdout] | [INFO] [stdout] 80 | it.seek(SeekFrom::Start((0))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/v2/io.rs:107:21 [INFO] [stdout] | [INFO] [stdout] 107 | bincode::serialize_into(&mut file, &wo); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/v2/io.rs:125:17 [INFO] [stdout] | [INFO] [stdout] 125 | it.seek(SeekFrom::Start((0))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 33 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 07s [INFO] running `Command { std: "docker" "inspect" "ba827516805bf95ca4a4d38176a4202b367feb0a2dc96feffd772ce113573413", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ba827516805bf95ca4a4d38176a4202b367feb0a2dc96feffd772ce113573413", kill_on_drop: false }` [INFO] [stdout] ba827516805bf95ca4a4d38176a4202b367feb0a2dc96feffd772ce113573413 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d6a246e0d7fbcb376ea3c455e7c96fe696451f568eb13af27b6f1e0057f7d8d9 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "d6a246e0d7fbcb376ea3c455e7c96fe696451f568eb13af27b6f1e0057f7d8d9", kill_on_drop: false }` [INFO] [stderr] Compiling project-pingcap-algo v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `std::fs::File` [INFO] [stdout] --> src/main.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fs::File; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::io::BufReader` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::BufReader; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::path::Path` [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 3 | use std::path::Path; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `bincode::ErrorKind` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use bincode::ErrorKind; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `failure::Error` [INFO] [stdout] --> src/main.rs:7:5 [INFO] [stdout] | [INFO] [stdout] 7 | use failure::Error; [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `BufRead` [INFO] [stdout] --> src/v2/count.rs:5:32 [INFO] [stdout] | [INFO] [stdout] 5 | use std::io::{Read, BufReader, BufRead}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `BufRead`, `Read`, `Write` [INFO] [stdout] --> src/v2/io.rs:2:15 [INFO] [stdout] | [INFO] [stdout] 2 | use std::io::{Read, BufReader, BufRead, Write, Seek, SeekFrom}; [INFO] [stdout] | ^^^^ ^^^^^^^ ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::process::id` [INFO] [stdout] --> src/v2/io.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use std::process::id; [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/v2/io.rs:80:41 [INFO] [stdout] | [INFO] [stdout] 80 | it.seek(SeekFrom::Start((0))); [INFO] [stdout] | ^^^ help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around function argument [INFO] [stdout] --> src/v2/io.rs:125:41 [INFO] [stdout] | [INFO] [stdout] 125 | it.seek(SeekFrom::Start((0))); [INFO] [stdout] | ^^^ help: remove these parentheses [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `offset` [INFO] [stdout] --> src/v2/count.rs:29:26 [INFO] [stdout] | [INFO] [stdout] 29 | Some((count, offset)) => { [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_offset` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `buf` [INFO] [stdout] --> src/v2/io.rs:105:25 [INFO] [stdout] | [INFO] [stdout] 105 | let buf = bincode::serialized_size(&wo); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/v2/count.rs:26:13 [INFO] [stdout] | [INFO] [stdout] 26 | let mut item = self.map.get_mut(&word); [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: variable does not need to be mutable [INFO] [stdout] --> src/v2/io.rs:46:24 [INFO] [stdout] | [INFO] [stdout] 46 | while let Some(mut file) = self.big_chunks.pop() { [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `MergePair` [INFO] [stdout] --> src/v1.rs:17:8 [INFO] [stdout] | [INFO] [stdout] 17 | struct MergePair(String, u64, u64, BufReader); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct is never constructed: `Count` [INFO] [stdout] --> src/v1.rs:19:8 [INFO] [stdout] | [INFO] [stdout] 19 | struct Count { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `new` [INFO] [stdout] --> src/v1.rs:28:12 [INFO] [stdout] | [INFO] [stdout] 28 | pub fn new>(path: P) -> Result { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `count_chunk` [INFO] [stdout] --> src/v1.rs:42:8 [INFO] [stdout] | [INFO] [stdout] 42 | fn count_chunk(&mut self) -> Result<(), Error> { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `merge` [INFO] [stdout] --> src/v1.rs:81:8 [INFO] [stdout] | [INFO] [stdout] 81 | fn merge(&mut self) { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function is never used: `solve` [INFO] [stdout] --> src/v1.rs:125:12 [INFO] [stdout] | [INFO] [stdout] 125 | pub fn solve(&mut self) -> Option { [INFO] [stdout] | ^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/v2/count.rs:69:13 [INFO] [stdout] | [INFO] [stdout] 69 | chunk.read_to_end(&mut buff); [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] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/v2/io.rs:67:25 [INFO] [stdout] | [INFO] [stdout] 67 | bincode::serialize_into(&mut chunk, &wo); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/v2/io.rs:80:17 [INFO] [stdout] | [INFO] [stdout] 80 | it.seek(SeekFrom::Start((0))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/v2/io.rs:107:21 [INFO] [stdout] | [INFO] [stdout] 107 | bincode::serialize_into(&mut file, &wo); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/v2/io.rs:125:17 [INFO] [stdout] | [INFO] [stdout] 125 | it.seek(SeekFrom::Start((0))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 25 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 2.67s [INFO] running `Command { std: "docker" "inspect" "d6a246e0d7fbcb376ea3c455e7c96fe696451f568eb13af27b6f1e0057f7d8d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d6a246e0d7fbcb376ea3c455e7c96fe696451f568eb13af27b6f1e0057f7d8d9", kill_on_drop: false }` [INFO] [stdout] d6a246e0d7fbcb376ea3c455e7c96fe696451f568eb13af27b6f1e0057f7d8d9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] c2d4d44337ffeed7471960268a2511e1c3d63ee9010d832d89041776720d15d6 [INFO] running `Command { std: "docker" "start" "-a" "c2d4d44337ffeed7471960268a2511e1c3d63ee9010d832d89041776720d15d6", kill_on_drop: false }` [INFO] [stderr] warning: unused import: `std::fs::File` [INFO] [stderr] --> src/main.rs:1:5 [INFO] [stderr] | [INFO] [stderr] 1 | use std::fs::File; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::io::BufReader` [INFO] [stderr] --> src/main.rs:2:5 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io::BufReader; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::path::Path` [INFO] [stderr] --> src/main.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use std::path::Path; [INFO] [stderr] | ^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `bincode::ErrorKind` [INFO] [stderr] --> src/main.rs:5:5 [INFO] [stderr] | [INFO] [stderr] 5 | use bincode::ErrorKind; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `failure::Error` [INFO] [stderr] --> src/main.rs:7:5 [INFO] [stderr] | [INFO] [stderr] 7 | use failure::Error; [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `BufRead` [INFO] [stderr] --> src/v2/count.rs:5:32 [INFO] [stderr] | [INFO] [stderr] 5 | use std::io::{Read, BufReader, BufRead}; [INFO] [stderr] | ^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused imports: `BufRead`, `Read`, `Write` [INFO] [stderr] --> src/v2/io.rs:2:15 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io::{Read, BufReader, BufRead, Write, Seek, SeekFrom}; [INFO] [stderr] | ^^^^ ^^^^^^^ ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::process::id` [INFO] [stderr] --> src/v2/io.rs:6:5 [INFO] [stderr] | [INFO] [stderr] 6 | use std::process::id; [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/v2/io.rs:80:41 [INFO] [stderr] | [INFO] [stderr] 80 | it.seek(SeekFrom::Start((0))); [INFO] [stderr] | ^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around function argument [INFO] [stderr] --> src/v2/io.rs:125:41 [INFO] [stderr] | [INFO] [stderr] 125 | it.seek(SeekFrom::Start((0))); [INFO] [stderr] | ^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unused variable: `offset` [INFO] [stderr] --> src/v2/count.rs:29:26 [INFO] [stderr] | [INFO] [stderr] 29 | Some((count, offset)) => { [INFO] [stderr] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_offset` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `buf` [INFO] [stderr] --> src/v2/io.rs:105:25 [INFO] [stderr] | [INFO] [stderr] 105 | let buf = bincode::serialized_size(&wo); [INFO] [stderr] | ^^^ help: if this is intentional, prefix it with an underscore: `_buf` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/v2/count.rs:26:13 [INFO] [stderr] | [INFO] [stderr] 26 | let mut item = self.map.get_mut(&word); [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/v2/io.rs:46:24 [INFO] [stderr] | [INFO] [stderr] 46 | while let Some(mut file) = self.big_chunks.pop() { [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `MergePair` [INFO] [stderr] --> src/v1.rs:17:8 [INFO] [stderr] | [INFO] [stderr] 17 | struct MergePair(String, u64, u64, BufReader); [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: struct is never constructed: `Count` [INFO] [stderr] --> src/v1.rs:19:8 [INFO] [stderr] | [INFO] [stderr] 19 | struct Count { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `new` [INFO] [stderr] --> src/v1.rs:28:12 [INFO] [stderr] | [INFO] [stderr] 28 | pub fn new>(path: P) -> Result { [INFO] [stderr] | ^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `count_chunk` [INFO] [stderr] --> src/v1.rs:42:8 [INFO] [stderr] | [INFO] [stderr] 42 | fn count_chunk(&mut self) -> Result<(), Error> { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `merge` [INFO] [stderr] --> src/v1.rs:81:8 [INFO] [stderr] | [INFO] [stderr] 81 | fn merge(&mut self) { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated function is never used: `solve` [INFO] [stderr] --> src/v1.rs:125:12 [INFO] [stderr] | [INFO] [stderr] 125 | pub fn solve(&mut self) -> Option { [INFO] [stderr] | ^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/v2/count.rs:69:13 [INFO] [stderr] | [INFO] [stderr] 69 | chunk.read_to_end(&mut buff); [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/v2/io.rs:67:25 [INFO] [stderr] | [INFO] [stderr] 67 | bincode::serialize_into(&mut chunk, &wo); [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/v2/io.rs:80:17 [INFO] [stderr] | [INFO] [stderr] 80 | it.seek(SeekFrom::Start((0))); [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/v2/io.rs:107:21 [INFO] [stderr] | [INFO] [stderr] 107 | bincode::serialize_into(&mut file, &wo); [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/v2/io.rs:125:17 [INFO] [stderr] | [INFO] [stderr] 125 | it.seek(SeekFrom::Start((0))); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: 25 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.12s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/project_pingcap_algo-33eeef2fc1dfa292 [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test v1::count::test::test_count ... ok [INFO] [stdout] test v1::io::test::test_word ... ok [INFO] [stdout] test v1::count::test::test_flush ... ok [INFO] [stdout] test v1::merge::test::test ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "c2d4d44337ffeed7471960268a2511e1c3d63ee9010d832d89041776720d15d6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c2d4d44337ffeed7471960268a2511e1c3d63ee9010d832d89041776720d15d6", kill_on_drop: false }` [INFO] [stdout] c2d4d44337ffeed7471960268a2511e1c3d63ee9010d832d89041776720d15d6