[INFO] fetching crate iterators-collection 0.3.3... [INFO] checking iterators-collection-0.3.3 against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu [INFO] extracting crate iterators-collection 0.3.3 into /workspace/builds/worker-1-tc1/source [INFO] validating manifest of crates.io crate iterators-collection 0.3.3 on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate iterators-collection 0.3.3 [INFO] finished tweaking crates.io crate iterators-collection 0.3.3 [INFO] tweaked toml for crates.io crate iterators-collection 0.3.3 written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fb11092976a40612f79af9cceafaa1f2e74210d9f54a116d4816b4c8cbd8f78f [INFO] running `Command { std: "docker" "start" "-a" "fb11092976a40612f79af9cceafaa1f2e74210d9f54a116d4816b4c8cbd8f78f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fb11092976a40612f79af9cceafaa1f2e74210d9f54a116d4816b4c8cbd8f78f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fb11092976a40612f79af9cceafaa1f2e74210d9f54a116d4816b4c8cbd8f78f", kill_on_drop: false }` [INFO] [stdout] fb11092976a40612f79af9cceafaa1f2e74210d9f54a116d4816b4c8cbd8f78f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "-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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] eaff422f6cf4aac8f4312e1463f10a9f8bb0b7845be323dbd86d9753be407f68 [INFO] running `Command { std: "docker" "start" "-a" "eaff422f6cf4aac8f4312e1463f10a9f8bb0b7845be323dbd86d9753be407f68", kill_on_drop: false }` [INFO] [stderr] Checking iterators-collection v0.3.3 (/opt/rustwide/workdir) [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/share/mod.rs:166:9 [INFO] [stdout] | [INFO] [stdout] 166 | std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | ^^^^^^^^^^^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `Result<(), ()>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 166 - std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] 166 + let _ = self.increment(); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/share/mod.rs:166:9 [INFO] [stdout] | [INFO] [stdout] 166 | std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | ^^^^^^^^^^^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `Result<(), ()>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 166 - std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] 166 + let _ = self.increment(); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s [INFO] running `Command { std: "docker" "inspect" "eaff422f6cf4aac8f4312e1463f10a9f8bb0b7845be323dbd86d9753be407f68", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "eaff422f6cf4aac8f4312e1463f10a9f8bb0b7845be323dbd86d9753be407f68", kill_on_drop: false }` [INFO] [stdout] eaff422f6cf4aac8f4312e1463f10a9f8bb0b7845be323dbd86d9753be407f68 [INFO] checking iterators-collection-0.3.3 against try#f9935d29d867449445ee008640ccca1bf1ae0889+rustflags=-Dtail_expr_drop_order for crater-rollup-uwu [INFO] extracting crate iterators-collection 0.3.3 into /workspace/builds/worker-1-tc2/source [INFO] validating manifest of crates.io crate iterators-collection 0.3.3 on toolchain f9935d29d867449445ee008640ccca1bf1ae0889 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate iterators-collection 0.3.3 [INFO] finished tweaking crates.io crate iterators-collection 0.3.3 [INFO] tweaked toml for crates.io crate iterators-collection 0.3.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9935d29d867449445ee008640ccca1bf1ae0889" "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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 79279f3f0a04c2c54fc743dcdfdd8298ec643048fd49c8ea1dc5359e1e79d707 [INFO] running `Command { std: "docker" "start" "-a" "79279f3f0a04c2c54fc743dcdfdd8298ec643048fd49c8ea1dc5359e1e79d707", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "79279f3f0a04c2c54fc743dcdfdd8298ec643048fd49c8ea1dc5359e1e79d707", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "79279f3f0a04c2c54fc743dcdfdd8298ec643048fd49c8ea1dc5359e1e79d707", kill_on_drop: false }` [INFO] [stdout] 79279f3f0a04c2c54fc743dcdfdd8298ec643048fd49c8ea1dc5359e1e79d707 [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" "+f9935d29d867449445ee008640ccca1bf1ae0889" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 774d8127a8e914999e3100e40731661aeeb63d16152f7525e7958bec2523677c [INFO] running `Command { std: "docker" "start" "-a" "774d8127a8e914999e3100e40731661aeeb63d16152f7525e7958bec2523677c", kill_on_drop: false }` [INFO] [stderr] Checking iterators-collection v0.3.3 (/opt/rustwide/workdir) [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/filter/mod.rs:36:23 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn new(iterator: T) -> Self { [INFO] [stdout] | ----------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 36 | excluded: Vec::new(), [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] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/share/mod.rs:166:9 [INFO] [stdout] | [INFO] [stdout] 166 | std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | ^^^^^^^^^^^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `Result<(), ()>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 166 - std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] 166 + let _ = self.increment(); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | [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 `iterators-collection` (lib) due to 2 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/filter/mod.rs:36:23 [INFO] [stdout] | [INFO] [stdout] 33 | pub fn new(iterator: T) -> Self { [INFO] [stdout] | ----------- these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 36 | excluded: Vec::new(), [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] warning: calls to `std::mem::drop` with a value that implements `Copy` does nothing [INFO] [stdout] --> src/share/mod.rs:166:9 [INFO] [stdout] | [INFO] [stdout] 166 | std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | ^^^^^^^^^^^^^^^----------------^ [INFO] [stdout] | | [INFO] [stdout] | argument has type `Result<(), ()>` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dropping_copy_types)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the expression or result [INFO] [stdout] | [INFO] [stdout] 166 - std::mem::drop(self.increment()); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] 166 + let _ = self.increment(); // Dropping is a way to ignore the error which doesn't matter here [INFO] [stdout] | [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 `iterators-collection` (lib test) due to 2 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "774d8127a8e914999e3100e40731661aeeb63d16152f7525e7958bec2523677c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "774d8127a8e914999e3100e40731661aeeb63d16152f7525e7958bec2523677c", kill_on_drop: false }` [INFO] [stdout] 774d8127a8e914999e3100e40731661aeeb63d16152f7525e7958bec2523677c