[INFO] fetching crate serde_json_merge 0.0.4... [INFO] checking serde_json_merge-0.0.4 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate serde_json_merge 0.0.4 into /workspace/builds/worker-0-tc2/source [INFO] validating manifest of crates.io crate serde_json_merge 0.0.4 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 serde_json_merge 0.0.4 [INFO] finished tweaking crates.io crate serde_json_merge 0.0.4 [INFO] tweaked toml for crates.io crate serde_json_merge 0.0.4 written to /workspace/builds/worker-0-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] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 90 packages to latest compatible versions [INFO] [stderr] Adding anes v0.1.6 (available: v0.2.0) [INFO] [stderr] Adding bit-set v0.5.3 (available: v0.8.0) [INFO] [stderr] Adding bit-vec v0.6.3 (available: v0.8.0) [INFO] [stderr] Adding bitflags v1.3.2 (available: v2.6.0) [INFO] [stderr] Adding clap v3.2.25 (available: v4.5.18) [INFO] [stderr] Adding clap_lex v0.2.4 (available: v0.7.2) [INFO] [stderr] Adding criterion v0.4.0 (available: v0.5.1) [INFO] [stderr] Adding hashbrown v0.12.3 (available: v0.14.5) [INFO] [stderr] Adding hermit-abi v0.1.19 (available: v0.4.0) [INFO] [stderr] Adding indexmap v1.9.3 (available: v2.5.0) [INFO] [stderr] Adding itertools v0.10.5 (available: v0.13.0) [INFO] [stderr] Adding ordered-float v3.9.2 (available: v4.3.0) [INFO] [stderr] Adding os_str_bytes v6.6.1 (available: v7.0.0) [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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e02047f2a1d07a6488946f9faac5798e226c4aa5d2fcb9bbe2c7c3bdb8e5efa6 [INFO] running `Command { std: "docker" "start" "-a" "e02047f2a1d07a6488946f9faac5798e226c4aa5d2fcb9bbe2c7c3bdb8e5efa6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e02047f2a1d07a6488946f9faac5798e226c4aa5d2fcb9bbe2c7c3bdb8e5efa6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e02047f2a1d07a6488946f9faac5798e226c4aa5d2fcb9bbe2c7c3bdb8e5efa6", kill_on_drop: false }` [INFO] [stdout] e02047f2a1d07a6488946f9faac5798e226c4aa5d2fcb9bbe2c7c3bdb8e5efa6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 6e18b843406f8089ff1de815da9f413c43686fb163c0d91539ecb6ccf2306e16 [INFO] running `Command { std: "docker" "start" "-a" "6e18b843406f8089ff1de815da9f413c43686fb163c0d91539ecb6ccf2306e16", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Checking either v1.13.0 [INFO] [stderr] Checking hashbrown v0.14.5 [INFO] [stderr] Checking regex-syntax v0.8.4 [INFO] [stderr] Compiling num-traits v0.2.19 [INFO] [stderr] Compiling indexmap v1.9.3 [INFO] [stderr] Compiling libc v0.2.159 [INFO] [stderr] Checking half v2.4.1 [INFO] [stderr] Checking bit-vec v0.6.3 [INFO] [stderr] Checking os_str_bytes v6.6.1 [INFO] [stderr] Checking plotters-backend v0.3.7 [INFO] [stderr] Checking ciborium-io v0.2.2 [INFO] [stderr] Checking bit-set v0.5.3 [INFO] [stderr] Checking ciborium-ll v0.2.2 [INFO] [stderr] Checking clap_lex v0.2.4 [INFO] [stderr] Checking plotters-svg v0.3.7 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking rayon v1.10.0 [INFO] [stderr] Checking indexmap v2.5.0 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Checking textwrap v0.16.1 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Compiling syn v2.0.79 [INFO] [stderr] Checking cast v0.3.0 [INFO] [stderr] Checking walkdir v2.5.0 [INFO] [stderr] Checking clap v3.2.25 [INFO] [stderr] Checking plotters v0.3.7 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking oorandom v11.1.4 [INFO] [stderr] Checking anes v0.1.6 [INFO] [stderr] Checking itertools v0.13.0 [INFO] [stderr] Checking criterion-plot v0.5.0 [INFO] [stderr] Checking regex-automata v0.4.7 [INFO] [stderr] Compiling serde_derive v1.0.210 [INFO] [stderr] Checking regex v1.10.6 [INFO] [stderr] Checking fancy-regex v0.13.0 [INFO] [stderr] Checking serde v1.0.210 [INFO] [stderr] Checking serde_json v1.0.128 [INFO] [stderr] Checking ciborium v0.2.2 [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking serde_json_merge v0.0.4 (/opt/rustwide/workdir) [INFO] [stdout] error: this value of type `Option<(usize, index::Path)>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/iter/dfs.rs:78:15 [INFO] [stdout] | [INFO] [stdout] 76 | mut mutate: impl FnMut(&IndexPath, &mut Value), [INFO] [stdout] | ---------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 77 | ) -> Option { [INFO] [stdout] 78 | match self.queue.pop_back() { [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 `Option<(usize, index::Path)>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/iter/dfs.rs:123:15 [INFO] [stdout] | [INFO] [stdout] 121 | mut process: impl FnMut(&IndexPath, Option<&Value>) -> bool, [INFO] [stdout] | ----------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 122 | ) -> Option { [INFO] [stdout] 123 | match self.queue.pop_back() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see issue #123739 [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking criterion v0.4.0 [INFO] [stdout] error: aborting due to 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `serde_json_merge` (lib) due to 3 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "6e18b843406f8089ff1de815da9f413c43686fb163c0d91539ecb6ccf2306e16", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6e18b843406f8089ff1de815da9f413c43686fb163c0d91539ecb6ccf2306e16", kill_on_drop: false }` [INFO] [stdout] 6e18b843406f8089ff1de815da9f413c43686fb163c0d91539ecb6ccf2306e16