[INFO] fetching crate mimicry 0.1.0... [INFO] checking mimicry-0.1.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate mimicry 0.1.0 into /workspace/builds/worker-1-tc2/source [INFO] validating manifest of crates.io crate mimicry 0.1.0 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 mimicry 0.1.0 [INFO] finished tweaking crates.io crate mimicry 0.1.0 [INFO] tweaked toml for crates.io crate mimicry 0.1.0 written to /workspace/builds/worker-1-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 69 packages to latest compatible versions [INFO] [stderr] Adding darling v0.14.4 (available: v0.20.10) [INFO] [stderr] Adding darling_core v0.14.4 (available: v0.20.10) [INFO] [stderr] Adding darling_macro v0.14.4 (available: v0.20.10) [INFO] [stderr] Adding idna v0.5.0 (available: v1.0.2) [INFO] [stderr] Adding ouroboros v0.15.6 (available: v0.18.4) [INFO] [stderr] Adding ouroboros_macro v0.15.6 (available: v0.18.4) [INFO] [stderr] Adding pulldown-cmark v0.9.6 (available: v0.12.1) [INFO] [stderr] Adding strsim v0.10.0 (available: v0.11.1) [INFO] [stderr] Adding syn v1.0.109 (available: v2.0.77) [INFO] [stderr] Adding toml v0.7.8 (available: v0.8.19) [INFO] [stderr] Adding toml_edit v0.19.15 (available: v0.22.22) [INFO] [stderr] Adding winnow v0.5.40 (available: v0.6.20) [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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 6e77a13dc30585707fc578c59bc8ec1f916f58559d5c6b9820fa4054916bc6f9 [INFO] running `Command { std: "docker" "start" "-a" "6e77a13dc30585707fc578c59bc8ec1f916f58559d5c6b9820fa4054916bc6f9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6e77a13dc30585707fc578c59bc8ec1f916f58559d5c6b9820fa4054916bc6f9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6e77a13dc30585707fc578c59bc8ec1f916f58559d5c6b9820fa4054916bc6f9", kill_on_drop: false }` [INFO] [stdout] 6e77a13dc30585707fc578c59bc8ec1f916f58559d5c6b9820fa4054916bc6f9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] a0e3036af94bf51da31048c1ac9c7c5913897018b9a454ba02603ef40f21e80f [INFO] running `Command { std: "docker" "start" "-a" "a0e3036af94bf51da31048c1ac9c7c5913897018b9a454ba02603ef40f21e80f", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.210 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Compiling strsim v0.10.0 [INFO] [stderr] Checking winnow v0.5.40 [INFO] [stderr] Checking regex-syntax v0.8.4 [INFO] [stderr] Compiling pulldown-cmark v0.9.6 [INFO] [stderr] Compiling semver v1.0.23 [INFO] [stderr] Compiling doc-comment v0.3.3 [INFO] [stderr] Checking quote v1.0.37 [INFO] [stderr] Checking syn v2.0.77 [INFO] [stderr] Checking regex-automata v0.4.7 [INFO] [stderr] Checking toml_datetime v0.6.8 [INFO] [stderr] Checking serde_spanned v0.6.8 [INFO] [stderr] Checking toml_edit v0.19.15 [INFO] [stderr] Checking regex v1.10.6 [INFO] [stderr] Compiling darling_core v0.14.4 [INFO] [stderr] Checking toml v0.7.8 [INFO] [stderr] Checking version-sync v0.9.5 [INFO] [stderr] Compiling darling_macro v0.14.4 [INFO] [stderr] Compiling darling v0.14.4 [INFO] [stderr] Compiling mimicry-derive v0.1.0 [INFO] [stderr] Checking mimicry v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this value of type `RefMut<'_, Option>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/tls.rs:123:9 [INFO] [stdout] | [INFO] [stdout] 122 | fn into_inner(self) -> T { [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 123 | self.mock.borrow_mut().take().unwrap() [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 `mimicry` (lib) due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this value of type `RefMut<'_, Option>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/tls.rs:123:9 [INFO] [stdout] | [INFO] [stdout] 122 | fn into_inner(self) -> T { [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 123 | self.mock.borrow_mut().take().unwrap() [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 `mimicry` (lib test) due to 2 previous errors [INFO] running `Command { std: "docker" "inspect" "a0e3036af94bf51da31048c1ac9c7c5913897018b9a454ba02603ef40f21e80f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a0e3036af94bf51da31048c1ac9c7c5913897018b9a454ba02603ef40f21e80f", kill_on_drop: false }` [INFO] [stdout] a0e3036af94bf51da31048c1ac9c7c5913897018b9a454ba02603ef40f21e80f