[INFO] fetching crate impl-serde 0.4.0... [INFO] checking impl-serde-0.4.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate impl-serde 0.4.0 into /workspace/builds/worker-7-tc2/source [INFO] validating manifest of crates.io crate impl-serde 0.4.0 on toolchain 4d98531622e1718ae0bc3c7a1ab9cd8938428452 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate impl-serde 0.4.0 [INFO] finished tweaking crates.io crate impl-serde 0.4.0 [INFO] tweaked toml for crates.io crate impl-serde 0.4.0 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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 76 packages to latest compatible versions [INFO] [stderr] Adding bitflags v1.3.2 (latest: v2.6.0) [INFO] [stderr] Adding clap v2.34.0 (latest: v4.5.16) [INFO] [stderr] Adding criterion v0.3.6 (latest: v0.5.1) [INFO] [stderr] Adding criterion-plot v0.4.5 (latest: v0.5.0) [INFO] [stderr] Adding half v1.8.3 (latest: v2.4.1) [INFO] [stderr] Adding hermit-abi v0.1.19 (latest: v0.4.0) [INFO] [stderr] Adding itertools v0.10.5 (latest: v0.13.0) [INFO] [stderr] Adding textwrap v0.11.0 (latest: v0.16.1) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5f7257177562859cd9fd912bc0ce8f650175c03d7a6c2c4242f16ea9831b1590 [INFO] running `Command { std: "docker" "start" "-a" "5f7257177562859cd9fd912bc0ce8f650175c03d7a6c2c4242f16ea9831b1590", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5f7257177562859cd9fd912bc0ce8f650175c03d7a6c2c4242f16ea9831b1590", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5f7257177562859cd9fd912bc0ce8f650175c03d7a6c2c4242f16ea9831b1590", kill_on_drop: false }` [INFO] [stdout] 5f7257177562859cd9fd912bc0ce8f650175c03d7a6c2c4242f16ea9831b1590 [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6e6bf5f5608c90b86c86a1a6b7daae17097fe8968fe0d8b317119f9ccfee3834 [INFO] running `Command { std: "docker" "start" "-a" "6e6bf5f5608c90b86c86a1a6b7daae17097fe8968fe0d8b317119f9ccfee3834", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.209 [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Checking memchr v2.7.4 [INFO] [stderr] Checking either v1.13.0 [INFO] [stderr] Compiling libc v0.2.158 [INFO] [stderr] Compiling serde_json v1.0.127 [INFO] [stderr] Checking regex-syntax v0.8.4 [INFO] [stderr] Checking unicode-width v0.1.13 [INFO] [stderr] Checking plotters-backend v0.3.6 [INFO] [stderr] Compiling crunchy v0.2.2 [INFO] [stderr] Checking plotters-svg v0.3.6 [INFO] [stderr] Checking itertools v0.10.5 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking bitflags v1.3.2 [INFO] [stderr] Checking same-file v1.0.6 [INFO] [stderr] Checking half v1.8.3 [INFO] [stderr] Checking cast v0.3.0 [INFO] [stderr] Checking csv-core v0.1.11 [INFO] [stderr] Checking clap v2.34.0 [INFO] [stderr] Checking regex-automata v0.4.7 [INFO] [stderr] Checking walkdir v2.5.0 [INFO] [stderr] Checking plotters v0.3.6 [INFO] [stderr] Compiling quote v1.0.37 [INFO] [stderr] Checking rayon v1.10.0 [INFO] [stderr] Compiling syn v2.0.77 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking lazy_static v1.5.0 [INFO] [stderr] Checking byteorder v1.5.0 [INFO] [stderr] Checking hex v0.4.3 [INFO] [stderr] Checking oorandom v11.1.4 [INFO] [stderr] Checking criterion-plot v0.4.5 [INFO] [stderr] Checking uint v0.9.5 [INFO] [stderr] Checking regex v1.10.6 [INFO] [stderr] Compiling serde_derive v1.0.209 [INFO] [stderr] Checking serde_cbor v0.11.2 [INFO] [stderr] Checking csv v1.3.0 [INFO] [stderr] Checking impl-serde v0.4.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking tinytemplate v1.2.1 [INFO] [stderr] Checking criterion v0.3.6 [INFO] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> benches/impl_serde.rs:45:24 [INFO] [stdout] | [INFO] [stdout] 45 | b.iter(|| black_box(serde_json::to_string(&x))) [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: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> benches/impl_serde.rs:61:24 [INFO] [stdout] | [INFO] [stdout] 61 | b.iter(|| black_box(serde_json::from_str::(&x))) [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] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> benches/impl_serde.rs:80:24 [INFO] [stdout] | [INFO] [stdout] 80 | b.iter(|| black_box(serde_json::to_string(&x))) [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] [stdout] error: these values and local bindings have significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> benches/impl_serde.rs:97:24 [INFO] [stdout] | [INFO] [stdout] 97 | b.iter(|| black_box(serde_json::from_str::(&x))) [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] [stdout] error: aborting due to 4 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `impl-serde` (bench "impl_serde") due to 5 previous errors [INFO] running `Command { std: "docker" "inspect" "6e6bf5f5608c90b86c86a1a6b7daae17097fe8968fe0d8b317119f9ccfee3834", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6e6bf5f5608c90b86c86a1a6b7daae17097fe8968fe0d8b317119f9ccfee3834", kill_on_drop: false }` [INFO] [stdout] 6e6bf5f5608c90b86c86a1a6b7daae17097fe8968fe0d8b317119f9ccfee3834