[INFO] fetching crate clock-bound-shm 1.0.0... [INFO] building clock-bound-shm-1.0.0 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] extracting crate clock-bound-shm 1.0.0 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate clock-bound-shm 1.0.0 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate clock-bound-shm 1.0.0 [INFO] finished tweaking crates.io crate clock-bound-shm 1.0.0 [INFO] tweaked toml for crates.io crate clock-bound-shm 1.0.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 21 packages to latest compatible versions [INFO] [stderr] Adding errno v0.3.0 (available: v0.3.10) [INFO] [stderr] Adding nix v0.26.4 (available: v0.29.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] bc6e4b628f0479358a0d11294d14da270931ed2cd7b90c7ba22198c0041ce2be [INFO] running `Command { std: "docker" "start" "-a" "bc6e4b628f0479358a0d11294d14da270931ed2cd7b90c7ba22198c0041ce2be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "bc6e4b628f0479358a0d11294d14da270931ed2cd7b90c7ba22198c0041ce2be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bc6e4b628f0479358a0d11294d14da270931ed2cd7b90c7ba22198c0041ce2be", kill_on_drop: false }` [INFO] [stdout] bc6e4b628f0479358a0d11294d14da270931ed2cd7b90c7ba22198c0041ce2be [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 168b186935e5c96a1bc97436fa1925d613bf13c09d79f1f5a6ac25b7a333dff9 [INFO] running `Command { std: "docker" "start" "-a" "168b186935e5c96a1bc97436fa1925d613bf13c09d79f1f5a6ac25b7a333dff9", kill_on_drop: false }` [INFO] [stderr] Compiling memoffset v0.7.1 [INFO] [stderr] Compiling errno v0.3.0 [INFO] [stderr] Compiling nix v0.26.4 [INFO] [stderr] Compiling clock-bound-shm v1.0.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unnecessary `unsafe` block [INFO] [stdout] --> src/reader.rs:179:23 [INFO] [stdout] | [INFO] [stdout] 179 | let ceb_shm = unsafe { ptr::addr_of!(*cursor.cast::()) }; [INFO] [stdout] | ^^^^^^ unnecessary `unsafe` block [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_unsafe)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: relative drop order changing in Rust 2024 [INFO] [stdout] --> src/writer.rs:132:15 [INFO] [stdout] | [INFO] [stdout] 129 | let path_cstring = CString::new(path.as_os_str().as_bytes()) [INFO] [stdout] | ------------ [INFO] [stdout] | | [INFO] [stdout] | `path_cstring` calls a custom destructor [INFO] [stdout] | `path_cstring` will be dropped later as of Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 132 | match ShmReader::new(path_cstring.as_c_str()) { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | this value will be stored in a temporary; let us call it `#1` [INFO] [stdout] | up until Edition 2021 `#1` is dropped last but will be dropped earlier in Edition 2024 [INFO] [stdout] ... [INFO] [stdout] 136 | } [INFO] [stdout] | - now the temporary value is dropped here, before the local variables in the block or statement [INFO] [stdout] | [INFO] [stdout] = warning: this changes meaning in Rust 2024 [INFO] [stdout] = note: for more information, see [INFO] [stdout] note: `#1` invokes this custom destructor [INFO] [stdout] --> src/reader.rs:90:1 [INFO] [stdout] | [INFO] [stdout] 90 | / impl Drop for MmapGuard { [INFO] [stdout] 91 | | /// Drop the MmapGuard and unmap the file it tracks. [INFO] [stdout] 92 | | fn drop(&mut self) { [INFO] [stdout] ... | [INFO] [stdout] 101 | | } [INFO] [stdout] | |_^ [INFO] [stdout] note: `path_cstring` invokes this custom destructor [INFO] [stdout] --> /rustc/11663cd3bfefef7d34e8f0892c250bf698049392/library/alloc/src/ffi/c_str.rs:694:1 [INFO] [stdout] = note: most of the time, changing drop order is harmless; inspect the `impl Drop`s for side effects like releasing locks or sending messages [INFO] [stdout] = note: requested on the command line with `-D tail-expr-drop-order` [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `clock-bound-shm` (lib) due to 1 previous error; 1 warning emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "168b186935e5c96a1bc97436fa1925d613bf13c09d79f1f5a6ac25b7a333dff9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "168b186935e5c96a1bc97436fa1925d613bf13c09d79f1f5a6ac25b7a333dff9", kill_on_drop: false }` [INFO] [stdout] 168b186935e5c96a1bc97436fa1925d613bf13c09d79f1f5a6ac25b7a333dff9