[INFO] fetching crate kefta_macro 0.0.1...
[INFO] checking kefta_macro-0.0.1 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate kefta_macro 0.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate kefta_macro 0.0.1 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 kefta_macro 0.0.1
[INFO] finished tweaking crates.io crate kefta_macro 0.0.1
[INFO] tweaked toml for crates.io crate kefta_macro 0.0.1 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 6 packages to latest compatible versions
[INFO] [stderr]       Adding litrs v0.2.3 (available: v0.4.1)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[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] ca607c95d49270a172f79aa009494b144997ec872a2ae93672642f6b0626cb44
[INFO] running `Command { std: "docker" "start" "-a" "ca607c95d49270a172f79aa009494b144997ec872a2ae93672642f6b0626cb44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ca607c95d49270a172f79aa009494b144997ec872a2ae93672642f6b0626cb44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca607c95d49270a172f79aa009494b144997ec872a2ae93672642f6b0626cb44", kill_on_drop: false }`
[INFO] [stdout] ca607c95d49270a172f79aa009494b144997ec872a2ae93672642f6b0626cb44
[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] ed78c836e355e827351a80b6a1a15d067afa5fc9ba8593c2ad1a3fa376710ca1
[INFO] running `Command { std: "docker" "start" "-a" "ed78c836e355e827351a80b6a1a15d067afa5fc9ba8593c2ad1a3fa376710ca1", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.13
[INFO] [stderr]     Checking proc-macro2 v1.0.86
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking litrs v0.2.3
[INFO] [stderr]     Checking syn v1.0.109
[INFO] [stderr]     Checking kefta_core v0.0.1
[INFO] [stderr]     Checking kefta_macro v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `name` and `alias` are never read
[INFO] [stdout]   --> src/attr.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct EnumAttr {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 36 |     pub name: Option<String>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 37 |     pub alias: Vec<String>,
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `alias` are never read
[INFO] [stdout]   --> src/attr.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 35 | pub struct EnumAttr {
[INFO] [stdout]    |            -------- fields in this struct
[INFO] [stdout] 36 |     pub name: Option<String>,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout] 37 |     pub alias: Vec<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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.22s
[INFO] running `Command { std: "docker" "inspect" "ed78c836e355e827351a80b6a1a15d067afa5fc9ba8593c2ad1a3fa376710ca1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed78c836e355e827351a80b6a1a15d067afa5fc9ba8593c2ad1a3fa376710ca1", kill_on_drop: false }`
[INFO] [stdout] ed78c836e355e827351a80b6a1a15d067afa5fc9ba8593c2ad1a3fa376710ca1