[INFO] cloning repository https://github.com/Ruberald/regex-engine-rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ruberald/regex-engine-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRuberald%2Fregex-engine-rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRuberald%2Fregex-engine-rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 359cfa6169150dc2631d0da5d6d2dccf4d382290 [INFO] checking Ruberald/regex-engine-rs/359cfa6169150dc2631d0da5d6d2dccf4d382290 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRuberald%2Fregex-engine-rs" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Ruberald/regex-engine-rs on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Ruberald/regex-engine-rs [INFO] finished tweaking git repo https://github.com/Ruberald/regex-engine-rs [INFO] tweaked toml for git repo https://github.com/Ruberald/regex-engine-rs written to /workspace/builds/worker-0-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Ruberald/regex-engine-rs 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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 0e00a0fbd9829ca930cb9110abee25499b0667c4608a68c3f2a5d7507d52fa4b [INFO] running `Command { std: "docker" "start" "-a" "0e00a0fbd9829ca930cb9110abee25499b0667c4608a68c3f2a5d7507d52fa4b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "0e00a0fbd9829ca930cb9110abee25499b0667c4608a68c3f2a5d7507d52fa4b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0e00a0fbd9829ca930cb9110abee25499b0667c4608a68c3f2a5d7507d52fa4b", kill_on_drop: false }` [INFO] [stdout] 0e00a0fbd9829ca930cb9110abee25499b0667c4608a68c3f2a5d7507d52fa4b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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 -Dtail_expr_drop_order" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 59f76d834c31abee9f9b86c1d00a965ce89720cf67904b93872392ae18f5d0bd [INFO] running `Command { std: "docker" "start" "-a" "59f76d834c31abee9f9b86c1d00a965ce89720cf67904b93872392ae18f5d0bd", kill_on_drop: false }` [INFO] [stderr] Checking dyn-clone v1.0.17 [INFO] [stderr] Checking regex-engine-rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `ptr::hash` [INFO] [stdout] --> src/nfa_engine/mod.rs:1:48 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{cell::RefCell, collections::HashMap, ptr::hash, rc::Rc, str, usize}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ops::Deref` [INFO] [stdout] --> src/nfa_engine/state.rs:1:49 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{cell::RefCell, collections::VecDeque, ops::Deref, rc::Rc}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ptr::hash` [INFO] [stdout] --> src/nfa_engine/mod.rs:1:48 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{cell::RefCell, collections::HashMap, ptr::hash, rc::Rc, str, usize}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `ops::Deref` [INFO] [stdout] --> src/nfa_engine/state.rs:1:49 [INFO] [stdout] | [INFO] [stdout] 1 | use std::{cell::RefCell, collections::VecDeque, ops::Deref, rc::Rc}; [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/regex_engine/nfa_regex.rs:100:27 [INFO] [stdout] | [INFO] [stdout] 100 | HirKind::Look(x) => todo!(), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/regex_engine/nfa_regex.rs:101:28 [INFO] [stdout] | [INFO] [stdout] 101 | HirKind::Class(x) => todo!(), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/regex_engine/nfa_regex.rs:102:30 [INFO] [stdout] | [INFO] [stdout] 102 | HirKind::Capture(x) => todo!(), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/regex_engine/nfa_regex.rs:100:27 [INFO] [stdout] | [INFO] [stdout] 100 | HirKind::Look(x) => todo!(), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/regex_engine/nfa_regex.rs:101:28 [INFO] [stdout] | [INFO] [stdout] 101 | HirKind::Class(x) => todo!(), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `x` [INFO] [stdout] --> src/regex_engine/nfa_regex.rs:102:30 [INFO] [stdout] | [INFO] [stdout] 102 | HirKind::Capture(x) => todo!(), [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_x` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `pushfront_transition` is never used [INFO] [stdout] --> src/nfa_engine/mod.rs:37:12 [INFO] [stdout] | [INFO] [stdout] 11 | impl<'a> EngineNFA<'a> { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 37 | pub fn pushfront_transition(&mut self, from_state: &str, to_state: &str, matcher: Box) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `starts_group` and `ends_group` are never read [INFO] [stdout] --> src/nfa_engine/state.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct State<'a> { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 8 | starts_group: Vec<&'a str>, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] 9 | ends_group: Vec<&'a str>, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `pushfront_transition` is never used [INFO] [stdout] --> src/nfa_engine/state.rs:26:12 [INFO] [stdout] | [INFO] [stdout] 12 | impl<'a> State<'a> { [INFO] [stdout] | ------------------ method in this implementation [INFO] [stdout] ... [INFO] [stdout] 26 | pub fn pushfront_transition(&mut self, to_state: Rc>>, matcher: Box) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_label` is never used [INFO] [stdout] --> src/nfa_engine/state.rs:40:8 [INFO] [stdout] | [INFO] [stdout] 31 | pub trait Matcher: DynClone { [INFO] [stdout] | ------- method in this trait [INFO] [stdout] ... [INFO] [stdout] 40 | fn get_label(&self) -> Option { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `source` is never read [INFO] [stdout] --> src/regex_engine/nfa_regex.rs:178:5 [INFO] [stdout] | [INFO] [stdout] 177 | pub struct NFARegex<'a> { [INFO] [stdout] | -------- field in this struct [INFO] [stdout] 178 | source: &'static str, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/regex_engine/nfa_regex.rs:72:17 [INFO] [stdout] | [INFO] [stdout] 72 | Box::new(state::EpsilonMatcher {}))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `regex-engine-rs` (bin "regex-engine-rs" test) due to 2 previous errors; 10 warnings emitted [INFO] [stdout] warning: method `pushfront_transition` is never used [INFO] [stdout] --> src/nfa_engine/mod.rs:37:12 [INFO] [stdout] | [INFO] [stdout] 11 | impl<'a> EngineNFA<'a> { [INFO] [stdout] | ---------------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 37 | pub fn pushfront_transition(&mut self, from_state: &str, to_state: &str, matcher: Box) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: fields `starts_group` and `ends_group` are never read [INFO] [stdout] --> src/nfa_engine/state.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 5 | pub struct State<'a> { [INFO] [stdout] | ----- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 8 | starts_group: Vec<&'a str>, [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] 9 | ends_group: Vec<&'a str>, [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `pushfront_transition` is never used [INFO] [stdout] --> src/nfa_engine/state.rs:26:12 [INFO] [stdout] | [INFO] [stdout] 12 | impl<'a> State<'a> { [INFO] [stdout] | ------------------ method in this implementation [INFO] [stdout] ... [INFO] [stdout] 26 | pub fn pushfront_transition(&mut self, to_state: Rc>>, matcher: Box) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `get_label` is never used [INFO] [stdout] --> src/nfa_engine/state.rs:40:8 [INFO] [stdout] | [INFO] [stdout] 31 | pub trait Matcher: DynClone { [INFO] [stdout] | ------- method in this trait [INFO] [stdout] ... [INFO] [stdout] 40 | fn get_label(&self) -> Option { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `source` is never read [INFO] [stdout] --> src/regex_engine/nfa_regex.rs:178:5 [INFO] [stdout] | [INFO] [stdout] 177 | pub struct NFARegex<'a> { [INFO] [stdout] | -------- field in this struct [INFO] [stdout] 178 | source: &'static str, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/regex_engine/nfa_regex.rs:72:17 [INFO] [stdout] | [INFO] [stdout] 72 | Box::new(state::EpsilonMatcher {}))); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 10 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `regex-engine-rs` (bin "regex-engine-rs") due to 2 previous errors; 10 warnings emitted [INFO] running `Command { std: "docker" "inspect" "59f76d834c31abee9f9b86c1d00a965ce89720cf67904b93872392ae18f5d0bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "59f76d834c31abee9f9b86c1d00a965ce89720cf67904b93872392ae18f5d0bd", kill_on_drop: false }` [INFO] [stdout] 59f76d834c31abee9f9b86c1d00a965ce89720cf67904b93872392ae18f5d0bd