[INFO] fetching crate json-codec-wasm 0.1.0... [INFO] checking json-codec-wasm-0.1.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate json-codec-wasm 0.1.0 into /workspace/builds/worker-5-tc2/source [INFO] validating manifest of crates.io crate json-codec-wasm 0.1.0 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate json-codec-wasm 0.1.0 [INFO] finished tweaking crates.io crate json-codec-wasm 0.1.0 [INFO] tweaked toml for crates.io crate json-codec-wasm 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 24 packages to latest compatible versions [INFO] [stderr] Adding aho-corasick v0.5.3 (available: v1.1.3) [INFO] [stderr] Adding env_logger v0.3.5 (available: v0.11.5) [INFO] [stderr] Adding log v0.3.9 (available: v0.4.22) [INFO] [stderr] Adding memchr v0.1.11 (available: v2.7.4) [INFO] [stderr] Adding quickcheck v0.2.27 (available: v1.0.3) [INFO] [stderr] Adding rand v0.3.23 (available: v0.8.5) [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 regex v0.1.80 (available: v1.10.6) [INFO] [stderr] Adding regex-syntax v0.3.9 (available: v0.8.4) [INFO] [stderr] Adding thread-id v2.0.0 (available: v4.2.2) [INFO] [stderr] Adding thread_local v0.2.7 (available: v1.1.8) [INFO] [stderr] Adding utf8-ranges v0.1.3 (available: v1.0.5) [INFO] [stderr] Adding winapi v0.2.8 (available: v0.3.9) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fd8caed110f87d8a01fd99f4341886a3ce2b3b918c0872bf92e282959be2ae6f [INFO] running `Command { std: "docker" "start" "-a" "fd8caed110f87d8a01fd99f4341886a3ce2b3b918c0872bf92e282959be2ae6f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fd8caed110f87d8a01fd99f4341886a3ce2b3b918c0872bf92e282959be2ae6f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fd8caed110f87d8a01fd99f4341886a3ce2b3b918c0872bf92e282959be2ae6f", kill_on_drop: false }` [INFO] [stdout] fd8caed110f87d8a01fd99f4341886a3ce2b3b918c0872bf92e282959be2ae6f [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] da05c9fa3afdeaf229e217e7f231e19596832853f40306a377090cb651004304 [INFO] running `Command { std: "docker" "start" "-a" "da05c9fa3afdeaf229e217e7f231e19596832853f40306a377090cb651004304", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling winapi-build v0.1.1 [INFO] [stderr] Checking winapi v0.2.8 [INFO] [stderr] Checking utf8-ranges v0.1.3 [INFO] [stderr] Checking regex-syntax v0.3.9 [INFO] [stderr] Checking json-codec-wasm v0.1.0 (/opt/rustwide/workdir) [INFO] [stderr] Checking log v0.3.9 [INFO] [stderr] Checking memchr v0.1.11 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Compiling kernel32-sys v0.2.2 [INFO] [stderr] Checking aho-corasick v0.5.3 [INFO] [stdout] warning: field `buffer` is never read [INFO] [stdout] --> src/decoder.rs:185:5 [INFO] [stdout] | [INFO] [stdout] 182 | pub struct Decoder { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 185 | buffer: [u8; 512], [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking thread-id v2.0.0 [INFO] [stderr] Checking thread_local v0.2.7 [INFO] [stderr] Checking rand v0.3.23 [INFO] [stderr] Checking regex v0.1.80 [INFO] [stderr] Checking env_logger v0.3.5 [INFO] [stderr] Checking quickcheck v0.2.27 [INFO] [stdout] error: this value of type `Result<(), EncodeError>` has significant drop implementation that will have a different drop order from that of Edition 2021 [INFO] [stdout] --> tests/properties.rs:155:11 [INFO] [stdout] | [INFO] [stdout] 149 | fn id(enc: F, dec: G) -> bool [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] 155 | match enc(&mut e) { [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: aborting due to 1 previous error [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `json-codec-wasm` (test "properties") due to 2 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] warning: field `buffer` is never read [INFO] [stdout] --> src/decoder.rs:185:5 [INFO] [stdout] | [INFO] [stdout] 182 | pub struct Decoder { [INFO] [stdout] | ------- field in this struct [INFO] [stdout] ... [INFO] [stdout] 185 | buffer: [u8; 512], [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "da05c9fa3afdeaf229e217e7f231e19596832853f40306a377090cb651004304", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "da05c9fa3afdeaf229e217e7f231e19596832853f40306a377090cb651004304", kill_on_drop: false }` [INFO] [stdout] da05c9fa3afdeaf229e217e7f231e19596832853f40306a377090cb651004304