[INFO] fetching crate optd-core 0.0.0...
[INFO] checking optd-core-0.0.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate optd-core 0.0.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate optd-core 0.0.0 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 optd-core 0.0.0
[INFO] finished tweaking crates.io crate optd-core 0.0.0
[INFO] tweaked toml for crates.io crate optd-core 0.0.0 written to /workspace/builds/worker-0-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 35 packages to latest compatible versions
[INFO] [stderr]       Adding itertools v0.11.0 (available: v0.13.0)
[INFO] [stderr]       Adding nu-ansi-term v0.46.0 (available: v0.50.1)
[INFO] [stderr]       Adding num-derive v0.2.5 (available: v0.4.2)
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (available: v1.0.86)
[INFO] [stderr]       Adding quote v0.6.13 (available: v1.0.37)
[INFO] [stderr]       Adding syn v0.15.44 (available: v2.0.79)
[INFO] [stderr]       Adding unicode-xid v0.1.0 (available: v0.2.6)
[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] 39d5a18a137cc118a1f5e4f1bd5df3403d6d0bb57cd7e1276cc4ae832058d0ef
[INFO] running `Command { std: "docker" "start" "-a" "39d5a18a137cc118a1f5e4f1bd5df3403d6d0bb57cd7e1276cc4ae832058d0ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "39d5a18a137cc118a1f5e4f1bd5df3403d6d0bb57cd7e1276cc4ae832058d0ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39d5a18a137cc118a1f5e4f1bd5df3403d6d0bb57cd7e1276cc4ae832058d0ef", kill_on_drop: false }`
[INFO] [stdout] 39d5a18a137cc118a1f5e4f1bd5df3403d6d0bb57cd7e1276cc4ae832058d0ef
[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] 9d34cea792b44f03440879e6da4e09fcef99855338a09c4c0552aea353773e6c
[INFO] running `Command { std: "docker" "start" "-a" "9d34cea792b44f03440879e6da4e09fcef99855338a09c4c0552aea353773e6c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking sharded-slab v0.1.7
[INFO] [stderr]     Checking itertools v0.11.0
[INFO] [stderr]     Checking pretty-xmlish v0.1.13
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]     Checking ordered-float v4.3.0
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking optd-core v0.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `describe` is never used
[INFO] [stdout]   --> src/cascades/tasks.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait Task<T: RelNodeTyp>: 'static + Send + Sync {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn describe(&self) -> String;
[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] [stdout] warning: method `describe` is never used
[INFO] [stdout]   --> src/cascades/tasks.rs:22:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub trait Task<T: RelNodeTyp>: 'static + Send + Sync {
[INFO] [stdout]    |           ---- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn describe(&self) -> String;
[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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.28s
[INFO] running `Command { std: "docker" "inspect" "9d34cea792b44f03440879e6da4e09fcef99855338a09c4c0552aea353773e6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d34cea792b44f03440879e6da4e09fcef99855338a09c4c0552aea353773e6c", kill_on_drop: false }`
[INFO] [stdout] 9d34cea792b44f03440879e6da4e09fcef99855338a09c4c0552aea353773e6c