[INFO] fetching crate esyn-derive 0.9.1...
[INFO] checking esyn-derive-0.9.1 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate esyn-derive 0.9.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate esyn-derive 0.9.1 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate esyn-derive 0.9.1
[INFO] finished tweaking crates.io crate esyn-derive 0.9.1
[INFO] tweaked toml for crates.io crate esyn-derive 0.9.1 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d90dbca0df4966bf171c49761113230559b18e3471b1ee63005f7ff1e31c49d9
[INFO] running `Command { std: "docker" "start" "-a" "d90dbca0df4966bf171c49761113230559b18e3471b1ee63005f7ff1e31c49d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d90dbca0df4966bf171c49761113230559b18e3471b1ee63005f7ff1e31c49d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d90dbca0df4966bf171c49761113230559b18e3471b1ee63005f7ff1e31c49d9", kill_on_drop: false }`
[INFO] [stdout] d90dbca0df4966bf171c49761113230559b18e3471b1ee63005f7ff1e31c49d9
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a25fedde803ee852ef40aeed6dc810ed4af066d03e5524e47b852e95af0da7f4
[INFO] running `Command { std: "docker" "start" "-a" "a25fedde803ee852ef40aeed6dc810ed4af066d03e5524e47b852e95af0da7f4", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking esyn-derive v0.9.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `attr`
[INFO] [stdout]  --> src/ders_enum_named.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{attr, bound};
[INFO] [stdout]   |             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `attr`
[INFO] [stdout]  --> src/ders_enum_named.rs:1:13
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::{attr, bound};
[INFO] [stdout]   |             ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generics`
[INFO] [stdout]  --> src/ders_enum_named.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let generics = bound::de_trait_bounds_struct(input.generics.clone());
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generics`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `generics`
[INFO] [stdout]  --> src/ders_enum_named.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let generics = bound::de_trait_bounds_struct(input.generics.clone());
[INFO] [stdout]   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_generics`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[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 2.36s
[INFO] running `Command { std: "docker" "inspect" "a25fedde803ee852ef40aeed6dc810ed4af066d03e5524e47b852e95af0da7f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a25fedde803ee852ef40aeed6dc810ed4af066d03e5524e47b852e95af0da7f4", kill_on_drop: false }`
[INFO] [stdout] a25fedde803ee852ef40aeed6dc810ed4af066d03e5524e47b852e95af0da7f4