[INFO] fetching crate mvclient 0.3.0... [INFO] checking mvclient-0.3.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate mvclient 0.3.0 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate mvclient 0.3.0 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate mvclient 0.3.0 [INFO] finished tweaking crates.io crate mvclient 0.3.0 [INFO] tweaked toml for crates.io crate mvclient 0.3.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 143 packages to latest compatible versions [INFO] [stderr] Adding base64 v0.21.7 (available: v0.22.1) [INFO] [stderr] Adding bitflags v1.3.2 (available: v2.6.0) [INFO] [stderr] Adding core-foundation v0.9.4 (available: v0.10.0) [INFO] [stderr] Adding h2 v0.3.26 (available: v0.4.6) [INFO] [stderr] Adding hermit-abi v0.3.9 (available: v0.4.0) [INFO] [stderr] Adding http v0.2.12 (available: v1.1.0) [INFO] [stderr] Adding http-body v0.4.6 (available: v1.0.1) [INFO] [stderr] Adding hyper v0.14.30 (available: v1.4.1) [INFO] [stderr] Adding idna v0.5.0 (available: v1.0.2) [INFO] [stderr] Adding reqwest v0.11.27 (available: v0.12.7) [INFO] [stderr] Adding sync_wrapper v0.1.2 (available: v1.0.1) [INFO] [stderr] Adding system-configuration v0.5.1 (available: v0.6.1) [INFO] [stderr] Adding system-configuration-sys v0.5.0 (available: v0.6.0) [INFO] [stderr] Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1) [INFO] [stderr] Adding windows-sys v0.48.0 (available: v0.59.0) [INFO] [stderr] Adding windows-sys v0.52.0 (available: v0.59.0) [INFO] [stderr] Adding windows-targets v0.48.5 (available: v0.52.6) [INFO] [stderr] Adding windows_aarch64_gnullvm v0.48.5 (available: v0.52.6) [INFO] [stderr] Adding windows_aarch64_msvc v0.48.5 (available: v0.52.6) [INFO] [stderr] Adding windows_i686_gnu v0.48.5 (available: v0.52.6) [INFO] [stderr] Adding windows_i686_msvc v0.48.5 (available: v0.52.6) [INFO] [stderr] Adding windows_x86_64_gnu v0.48.5 (available: v0.52.6) [INFO] [stderr] Adding windows_x86_64_gnullvm v0.48.5 (available: v0.52.6) [INFO] [stderr] Adding windows_x86_64_msvc v0.48.5 (available: v0.52.6) [INFO] [stderr] Adding winreg v0.50.0 (available: v0.52.0) [INFO] [stderr] Adding zstd v0.11.2+zstd.1.5.2 (available: v0.13.2) [INFO] [stderr] Adding zstd-safe v5.0.2+zstd.1.5.2 (available: v7.2.1) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 54bf12d85297fba360b7c728ed1f6619a6f180906305d69b462ab904db0590da [INFO] running `Command { std: "docker" "start" "-a" "54bf12d85297fba360b7c728ed1f6619a6f180906305d69b462ab904db0590da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "54bf12d85297fba360b7c728ed1f6619a6f180906305d69b462ab904db0590da", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "54bf12d85297fba360b7c728ed1f6619a6f180906305d69b462ab904db0590da", kill_on_drop: false }` [INFO] [stdout] 54bf12d85297fba360b7c728ed1f6619a6f180906305d69b462ab904db0590da [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 209114b3f447b7b61f95be3e4fbab7565b146a731e0e7d45e6439416f326b4ab [INFO] running `Command { std: "docker" "start" "-a" "209114b3f447b7b61f95be3e4fbab7565b146a731e0e7d45e6439416f326b4ab", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.210 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling libc v0.2.159 [INFO] [stderr] Compiling zstd-safe v5.0.2+zstd.1.5.2 [INFO] [stderr] Checking signal-hook-registry v1.4.2 [INFO] [stderr] Compiling tokio-macros v2.4.0 [INFO] [stderr] Compiling tracing-attributes v0.1.27 [INFO] [stderr] Compiling zerocopy-derive v0.7.35 [INFO] [stderr] Checking futures-util v0.3.30 [INFO] [stderr] Checking url v2.5.2 [INFO] [stderr] Compiling thiserror-impl v1.0.64 [INFO] [stderr] Checking arrayvec v0.7.6 [INFO] [stderr] Checking base64 v0.21.7 [INFO] [stderr] Checking arrayref v0.3.9 [INFO] [stderr] Checking ipnet v2.10.0 [INFO] [stderr] Checking constant_time_eq v0.3.1 [INFO] [stderr] Compiling jobserver v0.1.32 [INFO] [stderr] Compiling cc v1.1.21 [INFO] [stderr] Checking zerocopy v0.7.35 [INFO] [stderr] Checking thiserror v1.0.64 [INFO] [stderr] Checking tracing v0.1.40 [INFO] [stderr] Checking rmp v0.8.14 [INFO] [stderr] Checking ppv-lite86 v0.2.20 [INFO] [stderr] Compiling zstd-sys v2.0.13+zstd.1.5.6 [INFO] [stderr] Compiling blake3 v1.5.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking futures-executor v0.3.30 [INFO] [stderr] Checking futures v0.3.30 [INFO] [stderr] Checking bytes v1.7.2 [INFO] [stderr] Checking serde_urlencoded v0.7.1 [INFO] [stderr] Checking serde_json v1.0.128 [INFO] [stderr] Checking rmp-serde v1.3.0 [INFO] [stderr] Checking serde_bytes v0.11.15 [INFO] [stderr] Checking tokio v1.40.0 [INFO] [stderr] Checking http v0.2.12 [INFO] [stderr] Checking http-body v0.4.6 [INFO] [stderr] Checking zstd v0.11.2+zstd.1.5.2 [INFO] [stderr] Checking tokio-util v0.7.12 [INFO] [stderr] Checking h2 v0.3.26 [INFO] [stderr] Checking hyper v0.14.30 [INFO] [stderr] Checking reqwest v0.11.27 [INFO] [stderr] Checking mvclient v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this value of type `std::option::Option<(HeaderMap, bytes::Bytes)>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:524:17 [INFO] [stdout] | [INFO] [stdout] 508 | c: Arc, [INFO] [stdout] | - these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 509 | _completion_guard: OwnedRwLockReadGuard<()>, [INFO] [stdout] | ----------------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 510 | _sem_permit: OwnedSemaphorePermit, [INFO] [stdout] | ----------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 511 | async_ctx: Arc, [INFO] [stdout] | --------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 512 | raw_request: Bytes, [INFO] [stdout] | ----------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 524 | let response = match request_and_check( [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: this value of type `std::option::Option<(HeaderMap, bytes::Bytes)>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/lib.rs:524:17 [INFO] [stdout] | [INFO] [stdout] 508 | c: Arc, [INFO] [stdout] | - these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 509 | _completion_guard: OwnedRwLockReadGuard<()>, [INFO] [stdout] | ----------------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 510 | _sem_permit: OwnedSemaphorePermit, [INFO] [stdout] | ----------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 511 | async_ctx: Arc, [INFO] [stdout] | --------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 512 | raw_request: Bytes, [INFO] [stdout] | ----------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 524 | let response = match request_and_check( [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: unused `tokio::sync::RwLockWriteGuard` that must be used [INFO] [stdout] --> src/lib.rs:434:9 [INFO] [stdout] | [INFO] [stdout] 434 | self.async_ctx.background_completion.write().await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if unused the RwLock will immediately unlock [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 434 | let _ = self.async_ctx.background_completion.write().await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `tokio::sync::RwLockWriteGuard` that must be used [INFO] [stdout] --> src/lib.rs:635:9 [INFO] [stdout] | [INFO] [stdout] 635 | self.async_ctx.background_completion.write().await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if unused the RwLock will immediately unlock [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 635 | let _ = self.async_ctx.background_completion.write().await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mvclient` (lib test) due to 2 previous errors; 2 warnings emitted [INFO] [stdout] warning: unused `tokio::sync::RwLockWriteGuard` that must be used [INFO] [stdout] --> src/lib.rs:434:9 [INFO] [stdout] | [INFO] [stdout] 434 | self.async_ctx.background_completion.write().await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if unused the RwLock will immediately unlock [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 434 | let _ = self.async_ctx.background_completion.write().await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: unused `tokio::sync::RwLockWriteGuard` that must be used [INFO] [stdout] --> src/lib.rs:635:9 [INFO] [stdout] | [INFO] [stdout] 635 | self.async_ctx.background_completion.write().await; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if unused the RwLock will immediately unlock [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 635 | let _ = self.async_ctx.background_completion.write().await; [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 1 previous error; 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `mvclient` (lib) due to 2 previous errors; 2 warnings emitted [INFO] running `Command { std: "docker" "inspect" "209114b3f447b7b61f95be3e4fbab7565b146a731e0e7d45e6439416f326b4ab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "209114b3f447b7b61f95be3e4fbab7565b146a731e0e7d45e6439416f326b4ab", kill_on_drop: false }` [INFO] [stdout] 209114b3f447b7b61f95be3e4fbab7565b146a731e0e7d45e6439416f326b4ab