[INFO] cloning repository https://github.com/YingyGong/grep-optimization [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/YingyGong/grep-optimization" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYingyGong%2Fgrep-optimization", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYingyGong%2Fgrep-optimization'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 7723f5ea7103dd91f20fda9a419f02db74632b93 [INFO] checking YingyGong/grep-optimization against try#51b1964e35e5e26f8cd938940f0da6f7b5cc54fc for pr-138176 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FYingyGong%2Fgrep-optimization" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'... [INFO] [stderr] done. 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[INFO] validating manifest of git repo https://github.com/YingyGong/grep-optimization on toolchain 51b1964e35e5e26f8cd938940f0da6f7b5cc54fc [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/YingyGong/grep-optimization [INFO] finished tweaking git repo https://github.com/YingyGong/grep-optimization [INFO] tweaked toml for git repo https://github.com/YingyGong/grep-optimization written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/YingyGong/grep-optimization 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" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 77effd1d74a961b938851ea9865010581cd1c5c7b876ebcd2148319acda28364 [INFO] running `Command { std: "docker" "start" "-a" "77effd1d74a961b938851ea9865010581cd1c5c7b876ebcd2148319acda28364", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "77effd1d74a961b938851ea9865010581cd1c5c7b876ebcd2148319acda28364", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "77effd1d74a961b938851ea9865010581cd1c5c7b876ebcd2148319acda28364", kill_on_drop: false }` [INFO] [stdout] 77effd1d74a961b938851ea9865010581cd1c5c7b876ebcd2148319acda28364 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+51b1964e35e5e26f8cd938940f0da6f7b5cc54fc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] a191163260a1610930bf55ac4edb17f47be58552b8f977785a45c6c79b33c066 [INFO] running `Command { std: "docker" "start" "-a" "a191163260a1610930bf55ac4edb17f47be58552b8f977785a45c6c79b33c066", kill_on_drop: false }` [INFO] [stderr] Checking grep v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/helper.rs:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | let mut n = preprocess(reverse_string(&s).as_str()); [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/nfa_optimized.rs:641:13 [INFO] [stdout] | [INFO] [stdout] 641 | let mut new_nfa = NFA { [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `prefix_extract` is never used [INFO] [stdout] --> src/cfg.rs:68:8 [INFO] [stdout] | [INFO] [stdout] 68 | pub fn prefix_extract(node: &ASTNode) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `prefix_and_remainder_extract` is never used [INFO] [stdout] --> src/cfg.rs:136:8 [INFO] [stdout] | [INFO] [stdout] 136 | pub fn prefix_and_remainder_extract(node: &ASTNode) -> (String, String) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `two_str_common_prefix` is never used [INFO] [stdout] --> src/cfg.rs:217:4 [INFO] [stdout] | [INFO] [stdout] 217 | fn two_str_common_prefix(s1: &str, s2: &str) -> (String, String, String) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `debug_helper` is never used [INFO] [stdout] --> src/nfa_optimized.rs:366:12 [INFO] [stdout] | [INFO] [stdout] 28 | impl NFA { [INFO] [stdout] | -------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 366 | pub fn debug_helper(&self) { [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `generate_regex_pattern` is never used [INFO] [stdout] --> src/nfa_optimized.rs:662:8 [INFO] [stdout] | [INFO] [stdout] 662 | pub fn generate_regex_pattern(size: usize) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `R` should have a snake case name [INFO] [stdout] --> src/helper.rs:74:13 [INFO] [stdout] | [INFO] [stdout] 74 | let mut R = vec![vec![-1]; ALPHABET_SIZE]; [INFO] [stdout] | ^ help: convert the identifier to snake case: `r` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/helper.rs:96:9 [INFO] [stdout] | [INFO] [stdout] 96 | let mut n = preprocess(reverse_string(&s).as_str()); [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/nfa_optimized.rs:641:13 [INFO] [stdout] | [INFO] [stdout] 641 | let mut new_nfa = NFA { [INFO] [stdout] | ----^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `nfa` [INFO] [stdout] --> src/nfa_optimized.rs:679:13 [INFO] [stdout] | [INFO] [stdout] 679 | let nfa = nfa_from_reg(r"is \s"); [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_nfa` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `prefix` [INFO] [stdout] --> src/nfa_optimized.rs:698:13 [INFO] [stdout] | [INFO] [stdout] 698 | let prefix = nfa.find_prefix_from_nfa(); [INFO] [stdout] | ^^^^^^ help: if this is intentional, prefix it with an underscore: `_prefix` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `prefix_extract` is never used [INFO] [stdout] --> src/cfg.rs:68:8 [INFO] [stdout] | [INFO] [stdout] 68 | pub fn prefix_extract(node: &ASTNode) -> String { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `R` should have a snake case name [INFO] [stdout] --> src/helper.rs:74:13 [INFO] [stdout] | [INFO] [stdout] 74 | let mut R = vec![vec![-1]; ALPHABET_SIZE]; [INFO] [stdout] | ^ help: convert the identifier to snake case: `r` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s [INFO] running `Command { std: "docker" "inspect" "a191163260a1610930bf55ac4edb17f47be58552b8f977785a45c6c79b33c066", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a191163260a1610930bf55ac4edb17f47be58552b8f977785a45c6c79b33c066", kill_on_drop: false }` [INFO] [stdout] a191163260a1610930bf55ac4edb17f47be58552b8f977785a45c6c79b33c066