[INFO] fetching crate simpl 0.1.0... [INFO] checking simpl-0.1.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate simpl 0.1.0 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate simpl 0.1.0 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 simpl 0.1.0 [INFO] finished tweaking crates.io crate simpl 0.1.0 [INFO] tweaked toml for crates.io crate simpl 0.1.0 written to /workspace/builds/worker-4-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] 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8134fc86afb384e9e476f1578efd20efad4f252ed8719b8e85b1a0748b807102 [INFO] running `Command { std: "docker" "start" "-a" "8134fc86afb384e9e476f1578efd20efad4f252ed8719b8e85b1a0748b807102", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8134fc86afb384e9e476f1578efd20efad4f252ed8719b8e85b1a0748b807102", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8134fc86afb384e9e476f1578efd20efad4f252ed8719b8e85b1a0748b807102", kill_on_drop: false }` [INFO] [stdout] 8134fc86afb384e9e476f1578efd20efad4f252ed8719b8e85b1a0748b807102 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 7f82d3d3b3f273d6c9682b3b8d4de283f7d75ed071b63994b5976561797988f4 [INFO] running `Command { std: "docker" "start" "-a" "7f82d3d3b3f273d6c9682b3b8d4de283f7d75ed071b63994b5976561797988f4", kill_on_drop: false }` [INFO] [stderr] Checking simpl v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: field `data` is never read [INFO] [stdout] --> src/lib.rs:44:17 [INFO] [stdout] | [INFO] [stdout] 44 | pub data: Option, [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 94 | super::err!(TestError, [INFO] [stdout] | - --------- field in this struct [INFO] [stdout] | _____| [INFO] [stdout] | | [INFO] [stdout] 95 | | { [INFO] [stdout] 96 | | Io@std::io::Error; [INFO] [stdout] 97 | | } [INFO] [stdout] 98 | | ); [INFO] [stdout] | |_____- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: `TestError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] = note: this warning originates in the macro `super::err` (in Nightly builds, run with -Z macro-backtrace for more info) [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] --> src/lib.rs:83:33 [INFO] [stdout] | [INFO] [stdout] 79 | fn from(e: $t) -> $i { [INFO] [stdout] | ----- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 83 | source: Some(Errs::$j(e)) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 94 | / super::err!(TestError, [INFO] [stdout] 95 | | { [INFO] [stdout] 96 | | Io@std::io::Error; [INFO] [stdout] 97 | | } [INFO] [stdout] 98 | | ); [INFO] [stdout] | |_____- in this macro invocation [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] = note: this error originates in the macro `super::err` (in Nightly builds, run with -Z macro-backtrace for more info) [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 `simpl` (lib test) due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "7f82d3d3b3f273d6c9682b3b8d4de283f7d75ed071b63994b5976561797988f4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7f82d3d3b3f273d6c9682b3b8d4de283f7d75ed071b63994b5976561797988f4", kill_on_drop: false }` [INFO] [stdout] 7f82d3d3b3f273d6c9682b3b8d4de283f7d75ed071b63994b5976561797988f4