[INFO] fetching crate ferris-finder 0.2.1...
[INFO] checking ferris-finder-0.2.1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate ferris-finder 0.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate ferris-finder 0.2.1 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 ferris-finder 0.2.1
[INFO] finished tweaking crates.io crate ferris-finder 0.2.1
[INFO] tweaked toml for crates.io crate ferris-finder 0.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate ferris-finder 0.2.1 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 683a1d1d9ff3801963b7739309ed28f1473b70d73212cc904d30ebbe755f405b
[INFO] running `Command { std: "docker" "start" "-a" "683a1d1d9ff3801963b7739309ed28f1473b70d73212cc904d30ebbe755f405b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "683a1d1d9ff3801963b7739309ed28f1473b70d73212cc904d30ebbe755f405b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "683a1d1d9ff3801963b7739309ed28f1473b70d73212cc904d30ebbe755f405b", kill_on_drop: false }`
[INFO] [stdout] 683a1d1d9ff3801963b7739309ed28f1473b70d73212cc904d30ebbe755f405b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f959433d2fd118071fad11be9c65159f85ae52813e0c0b7c3a0ddd43c5e8ebd1
[INFO] running `Command { std: "docker" "start" "-a" "f959433d2fd118071fad11be9c65159f85ae52813e0c0b7c3a0ddd43c5e8ebd1", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]     Checking tracing-core v0.1.28
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking smallvec v1.8.1
[INFO] [stderr]     Checking http v0.2.8
[INFO] [stderr]    Compiling httparse v1.7.1
[INFO] [stderr]    Compiling serde v1.0.138
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking hashbrown v0.12.1
[INFO] [stderr]     Checking tracing v0.1.35
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking tracing-subscriber v0.3.15
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking parking_lot_core v0.9.3
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking indexmap v1.9.1
[INFO] [stderr]     Checking gimli v0.27.2
[INFO] [stderr]     Checking http-body v0.4.5
[INFO] [stderr]     Checking tokio v1.19.2
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
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[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking miniz_oxide v0.6.2
[INFO] [stderr]     Checking object v0.30.3
[INFO] [stderr]    Compiling backtrace v0.3.67
[INFO] [stderr]     Checking option-ext v0.2.0
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]     Checking color-spantrace v0.2.0
[INFO] [stderr]     Checking eyre v0.6.8
[INFO] [stderr]     Checking dirs-sys v0.4.1
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stderr]     Checking miniz_oxide v0.7.1
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking base64 v0.21.0
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking cassowary v0.3.0
[INFO] [stderr]     Checking flate2 v1.0.26
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking directories v5.0.1
[INFO] [stderr]     Checking crossterm v0.26.1
[INFO] [stderr]     Checking tui v0.19.0
[INFO] [stderr]     Checking fuzzy-matcher v0.3.7
[INFO] [stderr]     Checking addr2line v0.19.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking tokio-util v0.7.3
[INFO] [stderr]     Checking h2 v0.3.13
[INFO] [stderr]     Checking color-eyre v0.6.2
[INFO] [stderr]     Checking hyper v0.14.19
[INFO] [stderr]     Checking reqwest v0.11.18
[INFO] [stderr]     Checking ferris-finder v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `category` is never read
[INFO] [stdout]  --> src/ucd.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct CharEntry {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 |     pub category: GeneralCategory,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `CharEntry` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `category` is never read
[INFO] [stdout]  --> src/ucd.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct CharEntry {
[INFO] [stdout]   |            --------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 7 |     pub category: GeneralCategory,
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `CharEntry` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.48s
[INFO] running `Command { std: "docker" "inspect" "f959433d2fd118071fad11be9c65159f85ae52813e0c0b7c3a0ddd43c5e8ebd1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f959433d2fd118071fad11be9c65159f85ae52813e0c0b7c3a0ddd43c5e8ebd1", kill_on_drop: false }`
[INFO] [stdout] f959433d2fd118071fad11be9c65159f85ae52813e0c0b7c3a0ddd43c5e8ebd1