[INFO] fetching crate mmtkvdb 0.16.0...
[INFO] checking mmtkvdb-0.16.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate mmtkvdb 0.16.0 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate mmtkvdb 0.16.0 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 mmtkvdb 0.16.0
[INFO] finished tweaking crates.io crate mmtkvdb 0.16.0
[INFO] tweaked toml for crates.io crate mmtkvdb 0.16.0 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 106 packages to latest compatible versions
[INFO] [stderr]       Adding anes v0.1.6 (available: v0.2.0)
[INFO] [stderr]       Adding bindgen v0.63.0 (available: v0.70.1)
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.6.0)
[INFO] [stderr]       Adding clap v3.2.25 (available: v4.5.18)
[INFO] [stderr]       Adding clap_lex v0.2.4 (available: v0.7.2)
[INFO] [stderr]       Adding criterion v0.4.0 (available: v0.5.1)
[INFO] [stderr]       Adding hashbrown v0.12.3 (available: v0.14.5)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (available: v0.4.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.5.0)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.13.0)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (available: v0.6.5)
[INFO] [stderr]       Adding os_str_bytes v6.6.1 (available: v7.0.0)
[INFO] [stderr]       Adding peeking_take_while v0.1.2 (available: v1.0.0)
[INFO] [stderr]       Adding rustc-hash v1.1.0 (available: v2.0.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.79)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding which v4.4.2 (available: v6.0.3)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[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] 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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8767ade07021c97420010a082817bb0f52d3c31cda97aea8129a270458a999ee
[INFO] running `Command { std: "docker" "start" "-a" "8767ade07021c97420010a082817bb0f52d3c31cda97aea8129a270458a999ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8767ade07021c97420010a082817bb0f52d3c31cda97aea8129a270458a999ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8767ade07021c97420010a082817bb0f52d3c31cda97aea8129a270458a999ee", kill_on_drop: false }`
[INFO] [stdout] 8767ade07021c97420010a082817bb0f52d3c31cda97aea8129a270458a999ee
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 32376e062e57bfdc3d32518b2d3f6444b7c43a09b1c63933ed26474b04930509
[INFO] running `Command { std: "docker" "start" "-a" "32376e062e57bfdc3d32518b2d3f6444b7c43a09b1c63933ed26474b04930509", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling glob v0.3.1
[INFO] [stderr]    Compiling rustix v0.38.37
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling regex-syntax v0.8.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libloading v0.8.5
[INFO] [stderr]    Compiling home v0.5.9
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling bindgen v0.63.0
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking deref_owned v0.10.2
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]    Compiling clang-sys v1.8.1
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]    Compiling nom v7.1.3
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]    Compiling which v4.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking serde v1.0.210
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stderr]    Compiling mmtkvdb v0.16.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tests.rs:932:20
[INFO] [stdout]     |
[INFO] [stdout] 932 |         struct Key(std::rc::Rc<()>);
[INFO] [stdout]     |                --- ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]    --> src/tests.rs:933:22
[INFO] [stdout]     |
[INFO] [stdout] 933 |         struct Value(std::rc::Rc<()>);
[INFO] [stdout]     |                ----- ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                |
[INFO] [stdout]     |                field in this struct
[INFO] [stdout]     |
[INFO] [stdout]     = help: consider removing this field
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.25s
[INFO] running `Command { std: "docker" "inspect" "32376e062e57bfdc3d32518b2d3f6444b7c43a09b1c63933ed26474b04930509", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32376e062e57bfdc3d32518b2d3f6444b7c43a09b1c63933ed26474b04930509", kill_on_drop: false }`
[INFO] [stdout] 32376e062e57bfdc3d32518b2d3f6444b7c43a09b1c63933ed26474b04930509