[INFO] fetching crate catvec 0.1.6... [INFO] checking catvec-0.1.6 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate catvec 0.1.6 into /workspace/builds/worker-1-tc2/source [INFO] validating manifest of crates.io crate catvec 0.1.6 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 catvec 0.1.6 [INFO] finished tweaking crates.io crate catvec 0.1.6 [INFO] tweaked toml for crates.io crate catvec 0.1.6 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate crates.io crate catvec 0.1.6 already has a lockfile, it will not be regenerated [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-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8312c3409aa8d0aa577b10ea46c2b50fe8dc747448655f7b3345941c37395a9c [INFO] running `Command { std: "docker" "start" "-a" "8312c3409aa8d0aa577b10ea46c2b50fe8dc747448655f7b3345941c37395a9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8312c3409aa8d0aa577b10ea46c2b50fe8dc747448655f7b3345941c37395a9c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8312c3409aa8d0aa577b10ea46c2b50fe8dc747448655f7b3345941c37395a9c", kill_on_drop: false }` [INFO] [stdout] 8312c3409aa8d0aa577b10ea46c2b50fe8dc747448655f7b3345941c37395a9c [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] cb824a82517225097da403185177b6132486be687469482a2a8e99e76299831e [INFO] running `Command { std: "docker" "start" "-a" "cb824a82517225097da403185177b6132486be687469482a2a8e99e76299831e", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.30 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.80 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling libc v0.2.105 [INFO] [stderr] Checking defmac v0.2.1 [INFO] [stderr] Checking fastrand v1.5.0 [INFO] [stderr] Checking arrayvec v0.7.1 [INFO] [stderr] Checking tap v1.0.1 [INFO] [stderr] Checking regex-syntax v0.6.25 [INFO] [stderr] Checking termcolor v1.1.2 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Compiling quote v1.0.10 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking regex v1.5.4 [INFO] [stderr] Checking env_logger v0.9.0 [INFO] [stderr] Compiling derive_arbitrary v1.0.2 [INFO] [stderr] Checking arbitrary v1.0.2 [INFO] [stderr] Checking catvec v0.1.6 (/opt/rustwide/workdir) [INFO] [stdout] warning: methods `first_two_children` and `last_two_children` are never used [INFO] [stdout] --> src/btree.rs:536:8 [INFO] [stdout] | [INFO] [stdout] 42 | impl Tree { [INFO] [stdout] | --------------------------------------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 536 | fn first_two_children(&mut self) -> (Option<&mut Self>, Option<&mut Self>) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 554 | fn last_two_children(&mut self) -> (Option<&mut Self>, Option<&mut Self>) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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/lib.rs:46:19 [INFO] [stdout] | [INFO] [stdout] 43 | fn from(v: V) -> Self { [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 46 | .fold(CatVec::new(), |a, b| a.tap_mut(|a| a.push_back(b.clone()))) [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/lib.rs:46:67 [INFO] [stdout] | [INFO] [stdout] 46 | .fold(CatVec::new(), |a, b| a.tap_mut(|a| a.push_back(b.clone()))) [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] --> src/btree.rs:158:51 [INFO] [stdout] | [INFO] [stdout] 158 | ... .map(|i| Arc::new(Tree::Array(i))) [INFO] [stdout] | - ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [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 3 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `first_two_children` and `last_two_children` are never used [INFO] [stdout] --> src/btree.rs:536:8 [INFO] [stdout] | [INFO] [stdout] 42 | impl Tree { [INFO] [stdout] | --------------------------------------------- methods in this implementation [INFO] [stdout] ... [INFO] [stdout] 536 | fn first_two_children(&mut self) -> (Option<&mut Self>, Option<&mut Self>) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 554 | fn last_two_children(&mut self) -> (Option<&mut Self>, Option<&mut Self>) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [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/lib.rs:46:19 [INFO] [stdout] | [INFO] [stdout] 43 | fn from(v: V) -> Self { [INFO] [stdout] | ---- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 46 | .fold(CatVec::new(), |a, b| a.tap_mut(|a| a.push_back(b.clone()))) [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/lib.rs:46:67 [INFO] [stdout] | [INFO] [stdout] 46 | .fold(CatVec::new(), |a, b| a.tap_mut(|a| a.push_back(b.clone()))) [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] --> src/btree.rs:158:51 [INFO] [stdout] | [INFO] [stdout] 158 | ... .map(|i| Arc::new(Tree::Array(i))) [INFO] [stdout] | - ^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | these values have significant drop implementation and will observe changes in drop order under Edition 2024 [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] error: could not compile `catvec` (lib) due to 4 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `catvec` (lib test) due to 4 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "cb824a82517225097da403185177b6132486be687469482a2a8e99e76299831e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cb824a82517225097da403185177b6132486be687469482a2a8e99e76299831e", kill_on_drop: false }` [INFO] [stdout] cb824a82517225097da403185177b6132486be687469482a2a8e99e76299831e