[INFO] fetching crate serde_fs 0.2.0... [INFO] checking serde_fs-0.2.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate serde_fs 0.2.0 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate serde_fs 0.2.0 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate serde_fs 0.2.0 [INFO] finished tweaking crates.io crate serde_fs 0.2.0 [INFO] tweaked toml for crates.io crate serde_fs 0.2.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Updating crates.io index [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Locking 29 packages to latest compatible versions [INFO] [stderr] Adding case v0.1.0 (available: v1.0.0) [INFO] [stderr] Adding quote v0.3.15 (available: v1.0.37) [INFO] [stderr] Adding rand v0.4.6 (available: v0.8.5) [INFO] [stderr] Adding rand_core v0.3.1 (available: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (available: v0.6.4) [INFO] [stderr] Adding rdrand v0.4.0 (available: v0.8.3) [INFO] [stderr] Adding remove_dir_all v0.5.3 (available: v0.8.4) [INFO] [stderr] Adding serde_bytes v0.10.5 (available: v0.11.15) [INFO] [stderr] Adding syn v0.11.11 (available: v2.0.77) [INFO] [stderr] Adding unicode-xid v0.0.4 (available: v0.2.6) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 588704a4ce7d76cfd30696bab6290e2355f2d842e685c2636dc2d07f3b4ad152 [INFO] running `Command { std: "docker" "start" "-a" "588704a4ce7d76cfd30696bab6290e2355f2d842e685c2636dc2d07f3b4ad152", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "588704a4ce7d76cfd30696bab6290e2355f2d842e685c2636dc2d07f3b4ad152", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "588704a4ce7d76cfd30696bab6290e2355f2d842e685c2636dc2d07f3b4ad152", kill_on_drop: false }` [INFO] [stdout] 588704a4ce7d76cfd30696bab6290e2355f2d842e685c2636dc2d07f3b4ad152 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c8a3a5a5e9ac763d43b2f51b54bda0384940341be804b236e141638a9d870e2b [INFO] running `Command { std: "docker" "start" "-a" "c8a3a5a5e9ac763d43b2f51b54bda0384940341be804b236e141638a9d870e2b", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling unicode-xid v0.0.4 [INFO] [stderr] Compiling quote v0.3.15 [INFO] [stderr] Compiling case v0.1.0 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Checking assert_matches v1.5.0 [INFO] [stderr] Checking serde_bytes v0.10.5 [INFO] [stderr] Checking tempdir v0.3.7 [INFO] [stderr] Compiling synom v0.11.3 [INFO] [stderr] Compiling syn v0.11.11 [INFO] [stderr] Compiling derive-error v0.0.5 [INFO] [stderr] Checking serde_fs v0.2.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/de.rs:323:14 [INFO] [stdout] | [INFO] [stdout] 323 | dir: Box>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 323 | dir: Box>>, [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `std::option::Option>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/de.rs:137:15 [INFO] [stdout] | [INFO] [stdout] 130 | fn deserialize_char(self, visitor: V) -> Result where [INFO] [stdout] | ---- ------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 136 | let mut bytes = file.bytes(); [INFO] [stdout] | --------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 137 | match bytes.next() { [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 `std::option::Option>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/de.rs:357:15 [INFO] [stdout] | [INFO] [stdout] 353 | fn next_key_seed(&mut self, seed: K) -> Result, Self::Error> where [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 357 | match self.dir.next() { [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 `serde_fs` (lib) due to 3 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/de.rs:323:14 [INFO] [stdout] | [INFO] [stdout] 323 | dir: Box>>, [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 323 | dir: Box>>, [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this value of type `std::option::Option>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/de.rs:137:15 [INFO] [stdout] | [INFO] [stdout] 130 | fn deserialize_char(self, visitor: V) -> Result where [INFO] [stdout] | ---- ------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] | | [INFO] [stdout] | these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 136 | let mut bytes = file.bytes(); [INFO] [stdout] | --------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 137 | match bytes.next() { [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 `std::option::Option>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/de.rs:357:15 [INFO] [stdout] | [INFO] [stdout] 353 | fn next_key_seed(&mut self, seed: K) -> Result, Self::Error> where [INFO] [stdout] | ---- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 357 | match self.dir.next() { [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 `serde_fs` (lib test) due to 3 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "c8a3a5a5e9ac763d43b2f51b54bda0384940341be804b236e141638a9d870e2b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c8a3a5a5e9ac763d43b2f51b54bda0384940341be804b236e141638a9d870e2b", kill_on_drop: false }` [INFO] [stdout] c8a3a5a5e9ac763d43b2f51b54bda0384940341be804b236e141638a9d870e2b