[INFO] fetching crate bitutils2 0.1.4... [INFO] building bitutils2-0.1.4 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] extracting crate bitutils2 0.1.4 into /workspace/builds/worker-0-tc1/source [INFO] validating manifest of crates.io crate bitutils2 0.1.4 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate bitutils2 0.1.4 [INFO] finished tweaking crates.io crate bitutils2 0.1.4 [INFO] tweaked toml for crates.io crate bitutils2 0.1.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 43f2c706bab945afd67da616bb941c79f4cc720f1135b18d0b345a60e6e5dc97 [INFO] running `Command { std: "docker" "start" "-a" "43f2c706bab945afd67da616bb941c79f4cc720f1135b18d0b345a60e6e5dc97", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "43f2c706bab945afd67da616bb941c79f4cc720f1135b18d0b345a60e6e5dc97", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "43f2c706bab945afd67da616bb941c79f4cc720f1135b18d0b345a60e6e5dc97", kill_on_drop: false }` [INFO] [stdout] 43f2c706bab945afd67da616bb941c79f4cc720f1135b18d0b345a60e6e5dc97 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d6420fa48657d573549c868d8821ecc9a53378df79296ed19d217429d6b14211 [INFO] running `Command { std: "docker" "start" "-a" "d6420fa48657d573549c868d8821ecc9a53378df79296ed19d217429d6b14211", kill_on_drop: false }` [INFO] [stderr] Compiling bitutils2 v0.1.4 (/opt/rustwide/workdir) [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/bin_regex/mod.rs:1874:73 [INFO] [stdout] | [INFO] [stdout] 1874 | pub fn captures<'a, T>(&'a self, input: &'a T) -> Option> [INFO] [stdout] | -- lifetime `'a` declared here ^ this elided lifetime gets resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(elided_named_lifetimes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/bin_regex/parse_helpers.rs:54:9 [INFO] [stdout] | [INFO] [stdout] 54 | let mut input_iter = escape_slice(&input[start..]); [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: unused variable: `input` [INFO] [stdout] --> src/bin_regex/mod.rs:1485:39 [INFO] [stdout] | [INFO] [stdout] 1485 | fn check_state_flags(input: &T, flags: &Vec, offset: BitIndex) -> bool { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_input` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: relative drop order changing in Rust 2024 [INFO] [stdout] --> src/bin_regex/mod.rs:757:31 [INFO] [stdout] | [INFO] [stdout] 722 | let mut range_prog = RangeParseProgress::::NotStarted; [INFO] [stdout] | -------------- [INFO] [stdout] | | [INFO] [stdout] | `range_prog` calls a custom destructor [INFO] [stdout] | `range_prog` will be dropped later as of Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 737 | match prev_word.iter().collect::().parse::() { [INFO] [stdout] | ------------------------------------------------- [INFO] [stdout] | | [INFO] [stdout] | this value will be stored in a temporary; let us call it `#1` [INFO] [stdout] | `#1` will be dropped later as of Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 757 | match prev_word.iter().collect::().parse::() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this value will be stored in a temporary; let us call it `#2` [INFO] [stdout] | up until Edition 2021 `#2` is dropped last but will be dropped earlier in Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 762 | Err(msg) => return Err(msg.to_string()) [INFO] [stdout] | --- [INFO] [stdout] | | [INFO] [stdout] | `msg` calls a custom destructor [INFO] [stdout] | `msg` will be dropped later as of Edition 2024 [INFO] [stdout] 763 | } [INFO] [stdout] 764 | }, [INFO] [stdout] | - now the temporary value is dropped here, before the local variables in the block or statement [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: most of the time, changing drop order is harmless; inspect the `impl Drop`s for side effects like releasing locks or sending messages [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/bit_index.rs:150:8 [INFO] [stdout] | [INFO] [stdout] 149 | impl ParseBitIndexError { [INFO] [stdout] | ----------------------- associated function in this implementation [INFO] [stdout] 150 | fn new(kind: BitIndexErrorKind) -> ParseBitIndexError { [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `to_f64` and `to_f32` are never used [INFO] [stdout] --> src/semb/mod.rs:354:8 [INFO] [stdout] | [INFO] [stdout] 18 | impl Semb { [INFO] [stdout] | ----------------------------------------------------------------------------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 354 | fn to_f64(&self) -> f64 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 361 | fn to_f32(&self) -> f32 { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variant `InvalidCharacter` is never constructed [INFO] [stdout] --> src/semb/mod.rs:466:5 [INFO] [stdout] | [INFO] [stdout] 463 | enum ParseSembErrorKind { [INFO] [stdout] | ------------------ variant in this enum [INFO] [stdout] ... [INFO] [stdout] 466 | InvalidCharacter(usize) [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `ParseSembErrorKind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `offset_from` is never used [INFO] [stdout] --> src/semb/common.rs:12:8 [INFO] [stdout] | [INFO] [stdout] 4 | pub(crate) trait ByteSlice { [INFO] [stdout] | --------- method in this trait [INFO] [stdout] ... [INFO] [stdout] 12 | fn offset_from(&self, other: &Self) -> isize; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: enum `RangeParseProgress` is never used [INFO] [stdout] --> src/bin_regex/mod.rs:709:6 [INFO] [stdout] | [INFO] [stdout] 709 | enum RangeParseProgress { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `parse_int_char_class` is never used [INFO] [stdout] --> src/bin_regex/mod.rs:715:4 [INFO] [stdout] | [INFO] [stdout] 715 | fn parse_int_char_class(input: &Vec, nbi... [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `escape_str` is never used [INFO] [stdout] --> src/bin_regex/parse_helpers.rs:7:8 [INFO] [stdout] | [INFO] [stdout] 7 | pub fn escape_str(input: &str) -> EscapeIter { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `bitutils2` (lib) due to 1 previous error; 10 warnings emitted [INFO] running `Command { std: "docker" "inspect" "d6420fa48657d573549c868d8821ecc9a53378df79296ed19d217429d6b14211", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d6420fa48657d573549c868d8821ecc9a53378df79296ed19d217429d6b14211", kill_on_drop: false }` [INFO] [stdout] d6420fa48657d573549c868d8821ecc9a53378df79296ed19d217429d6b14211