[INFO] fetching crate memconstruct_macros 0.1.0...
[INFO] checking memconstruct_macros-0.1.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate memconstruct_macros 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate memconstruct_macros 0.1.0 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 memconstruct_macros 0.1.0
[INFO] finished tweaking crates.io crate memconstruct_macros 0.1.0
[INFO] tweaked toml for crates.io crate memconstruct_macros 0.1.0 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" "+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-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 727124a47c39129175268b07bcaa5800e45d6be7efa5ec0269358796a8db6435
[INFO] running `Command { std: "docker" "start" "-a" "727124a47c39129175268b07bcaa5800e45d6be7efa5ec0269358796a8db6435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "727124a47c39129175268b07bcaa5800e45d6be7efa5ec0269358796a8db6435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "727124a47c39129175268b07bcaa5800e45d6be7efa5ec0269358796a8db6435", kill_on_drop: false }`
[INFO] [stdout] 727124a47c39129175268b07bcaa5800e45d6be7efa5ec0269358796a8db6435
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 39967f8d165e2a11695116e4569b0b8ff0c69acc5fe90fa89e08dd43d7159e44
[INFO] running `Command { std: "docker" "start" "-a" "39967f8d165e2a11695116e4569b0b8ff0c69acc5fe90fa89e08dd43d7159e44", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking memconstruct_macros v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:132:54
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let impl_token_generics = impl_token_generics.clone();
[INFO] [stdout]     |                                                      ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[proc_macro2::TokenStream]` does not implement `Clone`, so calling `clone` on `&[proc_macro2::TokenStream]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/lib.rs:132:54
[INFO] [stdout]     |
[INFO] [stdout] 132 |         let impl_token_generics = impl_token_generics.clone();
[INFO] [stdout]     |                                                      ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[proc_macro2::TokenStream]` does not implement `Clone`, so calling `clone` on `&[proc_macro2::TokenStream]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` 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 2.34s
[INFO] running `Command { std: "docker" "inspect" "39967f8d165e2a11695116e4569b0b8ff0c69acc5fe90fa89e08dd43d7159e44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "39967f8d165e2a11695116e4569b0b8ff0c69acc5fe90fa89e08dd43d7159e44", kill_on_drop: false }`
[INFO] [stdout] 39967f8d165e2a11695116e4569b0b8ff0c69acc5fe90fa89e08dd43d7159e44