[INFO] fetching crate mtcp-rs 0.1.11... [INFO] checking mtcp-rs-0.1.11 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] extracting crate mtcp-rs 0.1.11 into /workspace/builds/worker-4-tc2/source [INFO] validating manifest of crates.io crate mtcp-rs 0.1.11 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 mtcp-rs 0.1.11 [INFO] removed 0 missing examples [INFO] finished tweaking crates.io crate mtcp-rs 0.1.11 [INFO] tweaked toml for crates.io crate mtcp-rs 0.1.11 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate crates.io crate mtcp-rs 0.1.11 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 60d96569384a8716702da1a60e65f2e04ce07a6af5ce8b045fdb0724d4302e42 [INFO] running `Command { std: "docker" "start" "-a" "60d96569384a8716702da1a60e65f2e04ce07a6af5ce8b045fdb0724d4302e42", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "60d96569384a8716702da1a60e65f2e04ce07a6af5ce8b045fdb0724d4302e42", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "60d96569384a8716702da1a60e65f2e04ce07a6af5ce8b045fdb0724d4302e42", kill_on_drop: false }` [INFO] [stdout] 60d96569384a8716702da1a60e65f2e04ce07a6af5ce8b045fdb0724d4302e42 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] dd6157f07ae4d49c2710625045b0db6c7e0f2d6d29d2b10384911f166f3d0423 [INFO] running `Command { std: "docker" "start" "-a" "dd6157f07ae4d49c2710625045b0db6c7e0f2d6d29d2b10384911f166f3d0423", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.139 [INFO] [stderr] Compiling log v0.4.17 [INFO] [stderr] Compiling io-lifetimes v1.0.5 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling rustix v0.36.8 [INFO] [stderr] Compiling crossbeam-utils v0.8.14 [INFO] [stderr] Checking linux-raw-sys v0.1.4 [INFO] [stderr] Checking regex-syntax v0.6.28 [INFO] [stderr] Checking lazy_rc v0.1.3 [INFO] [stderr] Checking termcolor v1.2.0 [INFO] [stderr] Checking spare_buffer v0.1.1 [INFO] [stderr] Checking crossbeam-channel v0.5.6 [INFO] [stderr] Checking aho-corasick v0.7.20 [INFO] [stderr] Checking mio v0.8.6 [INFO] [stderr] Checking nix v0.26.2 [INFO] [stderr] Checking socket2 v0.4.7 [INFO] [stderr] Checking num_cpus v1.15.0 [INFO] [stderr] Checking regex v1.7.1 [INFO] [stderr] Checking dns-lookup v1.0.8 [INFO] [stderr] Checking mtcp-rs v0.1.11 (/opt/rustwide/workdir) [INFO] [stdout] error: this value of type `Result<(), TcpError>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/stream.rs:145:15 [INFO] [stdout] | [INFO] [stdout] 142 | let mut context = manager.context_mut(); [INFO] [stdout] | ----------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 145 | match Self::await_connected(manager, &mut context, stream, token, timeout) { [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 `Result<(), std::io::Error>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> src/listener.rs:126:29 [INFO] [stdout] | [INFO] [stdout] 125 | let context = self.manager.context(); [INFO] [stdout] | ------- these local bindings with significant drop implementation may observe changes in drop order under Edition 2024 [INFO] [stdout] 126 | if let Err(error) = context.registry().deregister(&mut self.listener) { [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 `mtcp-rs` (lib) due to 3 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "dd6157f07ae4d49c2710625045b0db6c7e0f2d6d29d2b10384911f166f3d0423", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "dd6157f07ae4d49c2710625045b0db6c7e0f2d6d29d2b10384911f166f3d0423", kill_on_drop: false }` [INFO] [stdout] dd6157f07ae4d49c2710625045b0db6c7e0f2d6d29d2b10384911f166f3d0423