[INFO] fetching crate dashu-int 0.4.1... [INFO] building dashu-int-0.4.1 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] extracting crate dashu-int 0.4.1 into /workspace/builds/worker-1-tc1/source [INFO] validating manifest of crates.io crate dashu-int 0.4.1 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 dashu-int 0.4.1 [INFO] removed 0 missing tests [INFO] finished tweaking crates.io crate dashu-int 0.4.1 [INFO] tweaked toml for crates.io crate dashu-int 0.4.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate crates.io crate dashu-int 0.4.1 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded ryu v1.0.15 [INFO] [stderr] Downloaded serde v1.0.193 [INFO] [stderr] Downloaded quote v1.0.33 [INFO] [stderr] Downloaded proc-macro2 v1.0.69 [INFO] [stderr] Downloaded serde_json v1.0.108 [INFO] [stderr] Downloaded syn v2.0.39 [INFO] [stderr] Downloaded serde_derive v1.0.193 [INFO] [stderr] Downloaded memchr v2.6.4 [INFO] [stderr] Downloaded wasm-bindgen-macro-support v0.2.89 [INFO] [stderr] Downloaded hermit-abi v0.3.3 [INFO] [stderr] Downloaded clap_lex v0.6.0 [INFO] [stderr] Downloaded log v0.4.20 [INFO] [stderr] Downloaded bitflags v2.4.1 [INFO] [stderr] Downloaded wasm-bindgen-shared v0.2.89 [INFO] [stderr] Downloaded ciborium-io v0.2.1 [INFO] [stderr] Downloaded ciborium-ll v0.2.1 [INFO] [stderr] Downloaded ciborium v0.2.1 [INFO] [stderr] Downloaded half v1.8.2 [INFO] [stderr] Downloaded clap v4.4.8 [INFO] [stderr] Downloaded aho-corasick v1.1.2 [INFO] [stderr] Downloaded regex v1.10.2 [INFO] [stderr] Downloaded num-traits v0.2.17 [INFO] [stderr] Downloaded postcard v1.0.8 [INFO] [stderr] Downloaded clap_builder v4.4.8 [INFO] [stderr] Downloaded cobs v0.2.3 [INFO] [stderr] Downloaded anstyle v1.0.4 [INFO] [stderr] Downloaded errno v0.3.8 [INFO] [stderr] Downloaded windows-targets v0.52.0 [INFO] [stderr] Downloaded is-terminal v0.4.10 [INFO] [stderr] Downloaded plotters-svg v0.3.5 [INFO] [stderr] Downloaded wasm-bindgen v0.2.89 [INFO] [stderr] Downloaded num-integer v0.1.45 [INFO] [stderr] Downloaded bumpalo v3.14.0 [INFO] [stderr] Downloaded plotters v0.3.5 [INFO] [stderr] Downloaded regex-syntax v0.8.2 [INFO] [stderr] Downloaded rayon v1.8.0 [INFO] [stderr] Downloaded dashu-base v0.4.0 [INFO] [stderr] Downloaded lock_api v0.4.11 [INFO] [stderr] Downloaded windows_aarch64_gnullvm v0.52.0 [INFO] [stderr] Downloaded windows_x86_64_gnullvm v0.52.0 [INFO] [stderr] Downloaded heapless v0.7.16 [INFO] [stderr] Downloaded hash32 v0.2.1 [INFO] [stderr] Downloaded web-sys v0.3.66 [INFO] [stderr] Downloaded regex-automata v0.4.3 [INFO] [stderr] Downloaded semver v1.0.20 [INFO] [stderr] Downloaded getrandom v0.2.11 [INFO] [stderr] Downloaded js-sys v0.3.66 [INFO] [stderr] Downloaded atomic-polyfill v0.1.11 [INFO] [stderr] Downloaded num-order v1.2.0 [INFO] [stderr] Downloaded windows_x86_64_msvc v0.52.0 [INFO] [stderr] Downloaded windows_i686_gnu v0.52.0 [INFO] [stderr] Downloaded embedded-io v0.4.0 [INFO] [stderr] Downloaded critical-section v1.1.2 [INFO] [stderr] Downloaded libc v0.2.150 [INFO] [stderr] Downloaded oorandom v11.1.3 [INFO] [stderr] Downloaded plotters-backend v0.3.5 [INFO] [stderr] Downloaded wasm-bindgen-macro v0.2.89 [INFO] [stderr] Downloaded windows_aarch64_msvc v0.52.0 [INFO] [stderr] Downloaded either v1.9.0 [INFO] [stderr] Downloaded windows_x86_64_gnu v0.52.0 [INFO] [stderr] Downloaded crossbeam-utils v0.8.19 [INFO] [stderr] Downloaded windows_i686_msvc v0.52.0 [INFO] [stderr] Downloaded rayon-core v1.12.0 [INFO] [stderr] Downloaded winapi-util v0.1.6 [INFO] [stderr] Downloaded num-modular v0.6.1 [INFO] [stderr] Downloaded itoa v1.0.9 [INFO] [stderr] Downloaded rustix v0.38.28 [INFO] [stderr] Downloaded wasm-bindgen-backend v0.2.89 [INFO] [stderr] Downloaded rustversion v1.0.14 [INFO] [stderr] Downloaded ppv-lite86 v0.2.17 [INFO] [stderr] Downloaded walkdir v2.4.0 [INFO] [stderr] Downloaded serde_test v1.0.176 [INFO] [stderr] Downloaded linux-raw-sys v0.4.12 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] e124f65a6998412b123741f8666cc5368635fbb1a175d0a74410584d123fe8d9 [INFO] running `Command { std: "docker" "start" "-a" "e124f65a6998412b123741f8666cc5368635fbb1a175d0a74410584d123fe8d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e124f65a6998412b123741f8666cc5368635fbb1a175d0a74410584d123fe8d9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e124f65a6998412b123741f8666cc5368635fbb1a175d0a74410584d123fe8d9", kill_on_drop: false }` [INFO] [stdout] e124f65a6998412b123741f8666cc5368635fbb1a175d0a74410584d123fe8d9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 94d1612d5d19ac5c6bffc0019cbe5d80d8ca491786b10c01e0bec36772bf5f34 [INFO] running `Command { std: "docker" "start" "-a" "94d1612d5d19ac5c6bffc0019cbe5d80d8ca491786b10c01e0bec36772bf5f34", kill_on_drop: false }` [INFO] [stderr] Compiling rustversion v1.0.14 [INFO] [stderr] Compiling num-modular v0.6.1 [INFO] [stderr] Compiling dashu-base v0.4.0 [INFO] [stderr] Compiling static_assertions v1.1.0 [INFO] [stderr] Compiling num-order v1.2.0 [INFO] [stderr] Compiling dashu-int v0.4.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unexpected `cfg` condition name: `force_bits` [INFO] [stdout] --> src/arch/mod.rs:17:14 [INFO] [stdout] | [INFO] [stdout] 17 | if #[cfg(force_bits = "16")] { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `fmt_debug`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows` [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(force_bits, values("16"))'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(force_bits, values(\"16\"))");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] = note: `#[warn(unexpected_cfgs)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `force_bits` [INFO] [stdout] --> src/arch/mod.rs:21:19 [INFO] [stdout] | [INFO] [stdout] 21 | else if #[cfg(force_bits = "32")] { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(force_bits, values("32"))'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(force_bits, values(\"32\"))");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unexpected `cfg` condition name: `force_bits` [INFO] [stdout] --> src/arch/mod.rs:25:19 [INFO] [stdout] | [INFO] [stdout] 25 | else if #[cfg(force_bits = "64")] { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: consider using a Cargo feature instead [INFO] [stdout] = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint: [INFO] [stdout] [lints.rust] [INFO] [stdout] unexpected_cfgs = { level = "warn", check-cfg = ['cfg(force_bits, values("64"))'] } [INFO] [stdout] = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(force_bits, values(\"64\"))");` to the top of the `build.rs` [INFO] [stdout] = note: see for more information about checking conditional configuration [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/fmt/digit_writer.rs:20:74 [INFO] [stdout] | [INFO] [stdout] 19 | impl<'a> DigitWriter<'a> { [INFO] [stdout] | -- lifetime `'a` declared here [INFO] [stdout] 20 | pub fn new(writer: &'a mut dyn fmt::Write, digit_case: DigitCase) -> DigitWriter { [INFO] [stdout] | ^^^^^^^^^^^ 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: elided lifetime has a name [INFO] [stdout] --> src/modular/convert.rs:199:10 [INFO] [stdout] | [INFO] [stdout] 196 | pub fn reduce<'a, T: IntoRing<'a, ConstDivisor, RingElement = Reduced<'a>>>( [INFO] [stdout] | -- lifetime `'a` declared here [INFO] [stdout] ... [INFO] [stdout] 199 | ) -> Reduced { [INFO] [stdout] | ^^^^^^^ this elided lifetime gets resolved as `'a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: relative drop order changing in Rust 2024 [INFO] [stdout] --> src/remove.rs:45:32 [INFO] [stdout] | [INFO] [stdout] 23 | let (mut q, r) = (&*self).div_rem(factor); [INFO] [stdout] | ----- [INFO] [stdout] | | [INFO] [stdout] | `q` calls a custom destructor [INFO] [stdout] | `q` will be dropped later as of Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 45 | while let Some(last) = pows.pop() { [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] 46 | let (new_q, r) = (&q).div_rem(last); [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] | | `r` calls a custom destructor [INFO] [stdout] | | `r` will be dropped later as of Edition 2024 [INFO] [stdout] | `new_q` calls a custom destructor [INFO] [stdout] | `new_q` will be dropped later as of Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 51 | } [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: `#2` invokes this custom destructor [INFO] [stdout] --> src/repr.rs:520:1 [INFO] [stdout] | [INFO] [stdout] 520 | / impl Drop for Repr { [INFO] [stdout] 521 | | fn drop(&mut self) { [INFO] [stdout] 522 | | let cap = self.capacity(); [INFO] [stdout] 523 | | if cap > 2 { [INFO] [stdout] ... | [INFO] [stdout] 530 | | } [INFO] [stdout] | |_^ [INFO] [stdout] note: `q` invokes this custom destructor [INFO] [stdout] --> src/repr.rs:520:1 [INFO] [stdout] | [INFO] [stdout] 520 | / impl Drop for Repr { [INFO] [stdout] 521 | | fn drop(&mut self) { [INFO] [stdout] 522 | | let cap = self.capacity(); [INFO] [stdout] 523 | | if cap > 2 { [INFO] [stdout] ... | [INFO] [stdout] 530 | | } [INFO] [stdout] | |_^ [INFO] [stdout] note: `new_q` invokes this custom destructor [INFO] [stdout] --> src/repr.rs:520:1 [INFO] [stdout] | [INFO] [stdout] 520 | / impl Drop for Repr { [INFO] [stdout] 521 | | fn drop(&mut self) { [INFO] [stdout] 522 | | let cap = self.capacity(); [INFO] [stdout] 523 | | if cap > 2 { [INFO] [stdout] ... | [INFO] [stdout] 530 | | } [INFO] [stdout] | |_^ [INFO] [stdout] note: `r` invokes this custom destructor [INFO] [stdout] --> src/repr.rs:520:1 [INFO] [stdout] | [INFO] [stdout] 520 | / impl Drop for Repr { [INFO] [stdout] 521 | | fn drop(&mut self) { [INFO] [stdout] 522 | | let cap = self.capacity(); [INFO] [stdout] 523 | | if cap > 2 { [INFO] [stdout] ... | [INFO] [stdout] 530 | | } [INFO] [stdout] | |_^ [INFO] [stdout] note: `#1` invokes this custom destructor [INFO] [stdout] --> src/repr.rs:520:1 [INFO] [stdout] | [INFO] [stdout] 520 | / impl Drop for Repr { [INFO] [stdout] 521 | | fn drop(&mut self) { [INFO] [stdout] 522 | | let cap = self.capacity(); [INFO] [stdout] 523 | | if cap > 2 { [INFO] [stdout] ... | [INFO] [stdout] 530 | | } [INFO] [stdout] | |_^ [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] [stderr] error: could not compile `dashu-int` (lib) due to 1 previous error; 5 warnings emitted [INFO] running `Command { std: "docker" "inspect" "94d1612d5d19ac5c6bffc0019cbe5d80d8ca491786b10c01e0bec36772bf5f34", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "94d1612d5d19ac5c6bffc0019cbe5d80d8ca491786b10c01e0bec36772bf5f34", kill_on_drop: false }` [INFO] [stdout] 94d1612d5d19ac5c6bffc0019cbe5d80d8ca491786b10c01e0bec36772bf5f34