[INFO] fetching crate lemon-mint 0.1.4... [INFO] checking lemon-mint-0.1.4 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930 [INFO] extracting crate lemon-mint 0.1.4 into /workspace/builds/worker-6-tc2/source [INFO] validating manifest of crates.io crate lemon-mint 0.1.4 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 lemon-mint 0.1.4 [INFO] finished tweaking crates.io crate lemon-mint 0.1.4 [INFO] tweaked toml for crates.io crate lemon-mint 0.1.4 written to /workspace/builds/worker-6-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] 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] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] fcf6df89386037731fb509d8b38a65a53e921ce0041f56495080e8d5328f7ec1 [INFO] running `Command { std: "docker" "start" "-a" "fcf6df89386037731fb509d8b38a65a53e921ce0041f56495080e8d5328f7ec1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fcf6df89386037731fb509d8b38a65a53e921ce0041f56495080e8d5328f7ec1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fcf6df89386037731fb509d8b38a65a53e921ce0041f56495080e8d5328f7ec1", kill_on_drop: false }` [INFO] [stdout] fcf6df89386037731fb509d8b38a65a53e921ce0041f56495080e8d5328f7ec1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 6e330eeb0bb1e3318935c1217d4c2acf451c2e63c5cb3dc5289427fbb83a150c [INFO] running `Command { std: "docker" "start" "-a" "6e330eeb0bb1e3318935c1217d4c2acf451c2e63c5cb3dc5289427fbb83a150c", kill_on_drop: false }` [INFO] [stderr] Checking lemon-mint v0.1.4 (/opt/rustwide/workdir) [INFO] [stdout] warning: fields `with_fallback`, `n_nonterminals`, and `tables_size` are never read [INFO] [stdout] --> src/lib.rs:2831:2 [INFO] [stdout] | [INFO] [stdout] 2808 | pub struct LemonMint [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 2831 | with_fallback: bool, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 2842 | n_nonterminals: usize, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] 2843 | tables_size: usize, // Total table size of all tables in bytes [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `LemonMint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:1359:7 [INFO] [stdout] | [INFO] [stdout] 1359 | mem::replace(&mut symbols.array[rhs.index].firstset, set); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1359 | let _ = mem::replace(&mut symbols.array[rhs.index].firstset, set); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: fields `with_fallback`, `n_nonterminals`, and `tables_size` are never read [INFO] [stdout] --> src/lib.rs:2831:2 [INFO] [stdout] | [INFO] [stdout] 2808 | pub struct LemonMint [INFO] [stdout] | --------- fields in this struct [INFO] [stdout] ... [INFO] [stdout] 2831 | with_fallback: bool, [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 2842 | n_nonterminals: usize, [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] 2843 | tables_size: usize, // Total table size of all tables in bytes [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `LemonMint` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:1359:7 [INFO] [stdout] | [INFO] [stdout] 1359 | mem::replace(&mut symbols.array[rhs.index].firstset, set); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 1359 | let _ = mem::replace(&mut symbols.array[rhs.index].firstset, set); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.79s [INFO] running `Command { std: "docker" "inspect" "6e330eeb0bb1e3318935c1217d4c2acf451c2e63c5cb3dc5289427fbb83a150c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6e330eeb0bb1e3318935c1217d4c2acf451c2e63c5cb3dc5289427fbb83a150c", kill_on_drop: false }` [INFO] [stdout] 6e330eeb0bb1e3318935c1217d4c2acf451c2e63c5cb3dc5289427fbb83a150c