[INFO] fetching crate sfkv 0.1.0... [INFO] checking sfkv-0.1.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate sfkv 0.1.0 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate sfkv 0.1.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate sfkv 0.1.0 [INFO] finished tweaking crates.io crate sfkv 0.1.0 [INFO] tweaked toml for crates.io crate sfkv 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 18 packages to latest compatible versions [INFO] [stderr] Adding as-slice v0.1.5 (available: v0.2.1) [INFO] [stderr] Adding generic-array v0.12.4 (available: v1.1.0) [INFO] [stderr] Adding generic-array v0.13.3 (available: v1.1.0) [INFO] [stderr] Adding generic-array v0.14.7 (available: v1.1.0) [INFO] [stderr] Adding hash32 v0.1.1 (available: v0.3.1) [INFO] [stderr] Adding heapless v0.5.6 (available: v0.8.0) [INFO] [stderr] Adding postcard v0.5.2 (available: v1.0.10) [INFO] [stderr] Adding postcard-cobs v0.1.5-pre (available: v0.2.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 39733158cef83bc97096a0ca5d095801a2546d7e5765aa12ec34a7a962ae4884 [INFO] running `Command { std: "docker" "start" "-a" "39733158cef83bc97096a0ca5d095801a2546d7e5765aa12ec34a7a962ae4884", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "39733158cef83bc97096a0ca5d095801a2546d7e5765aa12ec34a7a962ae4884", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "39733158cef83bc97096a0ca5d095801a2546d7e5765aa12ec34a7a962ae4884", kill_on_drop: false }` [INFO] [stdout] 39733158cef83bc97096a0ca5d095801a2546d7e5765aa12ec34a7a962ae4884 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f5e19c7d41e781dec774e05eb6e003bd0a399f06230041a6c82d54c5e23a0a25 [INFO] running `Command { std: "docker" "start" "-a" "f5e19c7d41e781dec774e05eb6e003bd0a399f06230041a6c82d54c5e23a0a25", kill_on_drop: false }` [INFO] [stderr] Compiling typenum v1.17.0 [INFO] [stderr] Compiling version_check v0.9.5 [INFO] [stderr] Compiling serde v1.0.210 [INFO] [stderr] Compiling heapless v0.5.6 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking postcard-cobs v0.1.5-pre [INFO] [stderr] Compiling generic-array v0.14.7 [INFO] [stderr] Checking hash32 v0.1.1 [INFO] [stderr] Checking generic-array v0.13.3 [INFO] [stderr] Checking generic-array v0.12.4 [INFO] [stderr] Checking as-slice v0.1.5 [INFO] [stderr] Checking postcard v0.5.2 [INFO] [stderr] Checking sfkv v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this value of type `Result<(), error::Error<::Error>>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:181:15 [INFO] [stdout] | [INFO] [stdout] 179 | pub fn write>(&mut self, key: &str, value: V) -> Result<(), Error> { [INFO] [stdout] | ----- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 180 | let value = value.as_ref(); [INFO] [stdout] 181 | match self.append(key, value) { [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 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `sfkv` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this value of type `Result<(), error::Error<::Error>>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:181:15 [INFO] [stdout] | [INFO] [stdout] 179 | pub fn write>(&mut self, key: &str, value: V) -> Result<(), Error> { [INFO] [stdout] | ----- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 180 | let value = value.as_ref(); [INFO] [stdout] 181 | match self.append(key, value) { [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] warning: creating a mutable reference to mutable static is discouraged [INFO] [stdout] --> src/test.rs:46:18 [INFO] [stdout] | [INFO] [stdout] 46 | unsafe { &mut BACKUP_SPACE } [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ mutable reference to mutable static [INFO] [stdout] | [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: mutable references to mutable statics are dangerous; it's undefined behavior if any other pointer to the static is used or if any other reference is created for the static while the mutable reference lives [INFO] [stdout] = note: `#[warn(static_mut_refs)]` on by default [INFO] [stdout] help: use `&raw mut` instead to create a raw pointer [INFO] [stdout] | [INFO] [stdout] 46 | unsafe { &raw mut BACKUP_SPACE } [INFO] [stdout] | ~~~~~~~~ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `sfkv` (lib test) due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "f5e19c7d41e781dec774e05eb6e003bd0a399f06230041a6c82d54c5e23a0a25", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f5e19c7d41e781dec774e05eb6e003bd0a399f06230041a6c82d54c5e23a0a25", kill_on_drop: false }` [INFO] [stdout] f5e19c7d41e781dec774e05eb6e003bd0a399f06230041a6c82d54c5e23a0a25