[INFO] fetching crate specta-macros 2.0.0-rc.17...
[INFO] checking specta-macros-2.0.0-rc.17 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate specta-macros 2.0.0-rc.17 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate specta-macros 2.0.0-rc.17 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 specta-macros 2.0.0-rc.17
[INFO] finished tweaking crates.io crate specta-macros 2.0.0-rc.17
[INFO] tweaked toml for crates.io crate specta-macros 2.0.0-rc.17 written to /workspace/builds/worker-5-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 5 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] c8828a2a8704bb060363f78f550135fdc44ea3ca25d945ca21c9f73a97f94633
[INFO] running `Command { std: "docker" "start" "-a" "c8828a2a8704bb060363f78f550135fdc44ea3ca25d945ca21c9f73a97f94633", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8828a2a8704bb060363f78f550135fdc44ea3ca25d945ca21c9f73a97f94633", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8828a2a8704bb060363f78f550135fdc44ea3ca25d945ca21c9f73a97f94633", kill_on_drop: false }`
[INFO] [stdout] c8828a2a8704bb060363f78f550135fdc44ea3ca25d945ca21c9f73a97f94633
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 4870171e65e3660c673c3a3685cb4c08e5dbef5944253b6b0cf972ea925d8cbf
[INFO] running `Command { std: "docker" "start" "-a" "4870171e65e3660c673c3a3685cb4c08e5dbef5944253b6b0cf972ea925d8cbf", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking specta-macros v2.0.0-rc.17 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `then_option` is never used
[INFO] [stdout]    --> src/utils.rs:293:8
[INFO] [stdout]     |
[INFO] [stdout] 293 | pub fn then_option(condition: bool, inner: TokenStream) -> TokenStream {
[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: function `then_option` is never used
[INFO] [stdout]    --> src/utils.rs:293:8
[INFO] [stdout]     |
[INFO] [stdout] 293 | pub fn then_option(condition: bool, inner: TokenStream) -> TokenStream {
[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 3.13s
[INFO] running `Command { std: "docker" "inspect" "4870171e65e3660c673c3a3685cb4c08e5dbef5944253b6b0cf972ea925d8cbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4870171e65e3660c673c3a3685cb4c08e5dbef5944253b6b0cf972ea925d8cbf", kill_on_drop: false }`
[INFO] [stdout] 4870171e65e3660c673c3a3685cb4c08e5dbef5944253b6b0cf972ea925d8cbf