[INFO] fetching crate canadensis_serial 0.3.0... [INFO] checking canadensis_serial-0.3.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate canadensis_serial 0.3.0 into /workspace/builds/worker-3-tc2/source [INFO] validating manifest of crates.io crate canadensis_serial 0.3.0 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 canadensis_serial 0.3.0 [INFO] finished tweaking crates.io crate canadensis_serial 0.3.0 [INFO] tweaked toml for crates.io crate canadensis_serial 0.3.0 written to /workspace/builds/worker-3-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 59 packages to latest compatible versions [INFO] [stderr] Adding hash32 v0.2.1 (latest: v0.3.1) [INFO] [stderr] Adding hashbrown v0.13.2 (latest: v0.14.5) [INFO] [stderr] Adding heapless v0.7.17 (latest: v0.8.0) [INFO] [stderr] Adding syn v1.0.109 (latest: v2.0.77) [INFO] [stderr] Adding zerocopy v0.6.6 (latest: v0.7.35) [INFO] [stderr] Adding zerocopy-derive v0.6.6 (latest: v0.7.35) [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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] b51d39ec063775f8b6f092304d2b381ff3d6b65bea72829000eacbb5aa8f18e2 [INFO] running `Command { std: "docker" "start" "-a" "b51d39ec063775f8b6f092304d2b381ff3d6b65bea72829000eacbb5aa8f18e2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b51d39ec063775f8b6f092304d2b381ff3d6b65bea72829000eacbb5aa8f18e2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b51d39ec063775f8b6f092304d2b381ff3d6b65bea72829000eacbb5aa8f18e2", kill_on_drop: false }` [INFO] [stdout] b51d39ec063775f8b6f092304d2b381ff3d6b65bea72829000eacbb5aa8f18e2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 2541b9aa1e990c57e0c89a41f9bfdc665ea42e72c3594068b757f3fb96856c18 [INFO] running `Command { std: "docker" "start" "-a" "2541b9aa1e990c57e0c89a41f9bfdc665ea42e72c3594068b757f3fb96856c18", kill_on_drop: false }` [INFO] [stderr] Checking once_cell v1.19.0 [INFO] [stderr] Compiling ahash v0.8.11 [INFO] [stderr] Checking zerocopy v0.7.35 [INFO] [stderr] Checking hash32 v0.2.1 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling syn v2.0.77 [INFO] [stderr] Compiling heapless v0.7.17 [INFO] [stderr] Checking stable_deref_trait v1.2.0 [INFO] [stderr] Checking nb v1.1.0 [INFO] [stderr] Checking debug-helper v0.3.13 [INFO] [stderr] Compiling time-macros v0.2.18 [INFO] [stderr] Checking crc-any v2.5.0 [INFO] [stderr] Checking num_threads v0.1.7 [INFO] [stderr] Checking hashbrown v0.13.2 [INFO] [stderr] Checking time v0.3.36 [INFO] [stderr] Checking fallible_collections v0.4.9 [INFO] [stderr] Compiling hash32-derive v0.1.1 [INFO] [stderr] Checking canadensis_core v0.3.0 [INFO] [stderr] Checking simplelog v0.12.2 [INFO] [stderr] Compiling zerocopy-derive v0.6.6 [INFO] [stderr] Checking zerocopy v0.6.6 [INFO] [stderr] Checking canadensis_header v0.1.0 [INFO] [stderr] Checking canadensis_serial v0.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `DecodeError` is never constructed [INFO] [stdout] --> src/cobs.rs:173:12 [INFO] [stdout] | [INFO] [stdout] 173 | pub struct DecodeError; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `DecodeError` 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] [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/rx.rs:256:65 [INFO] [stdout] | [INFO] [stdout] 256 | .map_err(|oom| ServiceSubscribeError::Transport(Error::Memory(oom))) [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] --> src/rx.rs:276:65 [INFO] [stdout] | [INFO] [stdout] 276 | .map_err(|oom| ServiceSubscribeError::Transport(Error::Memory(oom))) [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 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `canadensis_serial` (lib) due to 3 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [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/rx.rs:256:65 [INFO] [stdout] | [INFO] [stdout] 256 | .map_err(|oom| ServiceSubscribeError::Transport(Error::Memory(oom))) [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] --> src/rx.rs:276:65 [INFO] [stdout] | [INFO] [stdout] 276 | .map_err(|oom| ServiceSubscribeError::Transport(Error::Memory(oom))) [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 2 previous errors [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `canadensis_serial` (lib test) due to 3 previous errors [INFO] running `Command { std: "docker" "inspect" "2541b9aa1e990c57e0c89a41f9bfdc665ea42e72c3594068b757f3fb96856c18", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2541b9aa1e990c57e0c89a41f9bfdc665ea42e72c3594068b757f3fb96856c18", kill_on_drop: false }` [INFO] [stdout] 2541b9aa1e990c57e0c89a41f9bfdc665ea42e72c3594068b757f3fb96856c18