[INFO] fetching crate cowstr 1.3.0... [INFO] checking cowstr-1.3.0 against try#4d98531622e1718ae0bc3c7a1ab9cd8938428452+rustflags=-Dtail_expr_drop_order for pr-129604 [INFO] extracting crate cowstr 1.3.0 into /workspace/builds/worker-2-tc2/source [INFO] validating manifest of crates.io crate cowstr 1.3.0 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 cowstr 1.3.0 [INFO] finished tweaking crates.io crate cowstr 1.3.0 [INFO] tweaked toml for crates.io crate cowstr 1.3.0 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" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 13 packages to latest compatible versions [INFO] [stderr] Adding code-product v0.3.0 (latest: v0.4.1) [INFO] [stderr] Adding code-product-lib v0.3.0 (latest: v0.4.0) [INFO] [stderr] Adding code-product-macro v0.3.0 (latest: v0.4.0) [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-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 5b505113a3ec2b30dbdd91d64527e9218bdcf6ffcfb85063b67a6f28a51a0271 [INFO] running `Command { std: "docker" "start" "-a" "5b505113a3ec2b30dbdd91d64527e9218bdcf6ffcfb85063b67a6f28a51a0271", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "5b505113a3ec2b30dbdd91d64527e9218bdcf6ffcfb85063b67a6f28a51a0271", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5b505113a3ec2b30dbdd91d64527e9218bdcf6ffcfb85063b67a6f28a51a0271", kill_on_drop: false }` [INFO] [stdout] 5b505113a3ec2b30dbdd91d64527e9218bdcf6ffcfb85063b67a6f28a51a0271 [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+4d98531622e1718ae0bc3c7a1ab9cd8938428452" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 46238238bf09d7bb6b9cd584f7db5410edc1f217b27b84e607deec4303b5bcb3 [INFO] running `Command { std: "docker" "start" "-a" "46238238bf09d7bb6b9cd584f7db5410edc1f217b27b84e607deec4303b5bcb3", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.86 [INFO] [stderr] Checking unicode-ident v1.0.12 [INFO] [stderr] Checking constptr v0.2.0 [INFO] [stderr] Compiling mutants v0.0.3 [INFO] [stderr] Compiling code-product-lib v0.3.0 [INFO] [stderr] Compiling code-product-macro v0.3.0 [INFO] [stderr] Checking code-product v0.3.0 [INFO] [stderr] Checking cowstr v1.3.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: struct `NotSend` is never constructed [INFO] [stdout] --> src/cowstr.rs:1836:8 [INFO] [stdout] | [INFO] [stdout] 1836 | struct NotSend(std::marker::PhantomData<*const ()>); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `NotSend` has a derived impl for the trait `Default`, 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/cowstr.rs:975:15 [INFO] [stdout] | [INFO] [stdout] 974 | let mut s = CowStr::new(); [INFO] [stdout] | - these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 975 | match s.try_read_chars(iter, until, ignore, limit) { [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/cowstr.rs:1016:15 [INFO] [stdout] | [INFO] [stdout] 1015 | let mut s = CowStr::new(); [INFO] [stdout] | - these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 1016 | match s.try_read_chars(iter, Some('\n'), Some('\r'), limit) { [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 `cowstr` (lib) due to 3 previous errors; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: struct `NotSend` is never constructed [INFO] [stdout] --> src/cowstr.rs:1836:8 [INFO] [stdout] | [INFO] [stdout] 1836 | struct NotSend(std::marker::PhantomData<*const ()>); [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `NotSend` has a derived impl for the trait `Default`, 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/cowstr.rs:975:15 [INFO] [stdout] | [INFO] [stdout] 974 | let mut s = CowStr::new(); [INFO] [stdout] | - these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 975 | match s.try_read_chars(iter, until, ignore, limit) { [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/cowstr.rs:1016:15 [INFO] [stdout] | [INFO] [stdout] 1015 | let mut s = CowStr::new(); [INFO] [stdout] | - these values have significant drop implementation and will observe changes in drop order under Edition 2024 [INFO] [stdout] 1016 | match s.try_read_chars(iter, Some('\n'), Some('\r'), limit) { [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 `cowstr` (lib test) due to 3 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "46238238bf09d7bb6b9cd584f7db5410edc1f217b27b84e607deec4303b5bcb3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "46238238bf09d7bb6b9cd584f7db5410edc1f217b27b84e607deec4303b5bcb3", kill_on_drop: false }` [INFO] [stdout] 46238238bf09d7bb6b9cd584f7db5410edc1f217b27b84e607deec4303b5bcb3