[INFO] fetching crate wta-reactor 0.1.0...
[INFO] checking wta-reactor-0.1.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate wta-reactor 0.1.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate wta-reactor 0.1.0 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 wta-reactor 0.1.0
[INFO] finished tweaking crates.io crate wta-reactor 0.1.0
[INFO] tweaked toml for crates.io crate wta-reactor 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 39 packages to latest compatible versions
[INFO] [stderr]       Adding educe v0.4.23 (available: v0.6.0)
[INFO] [stderr]       Adding enum-ordinalize v3.1.15 (available: v4.3.0)
[INFO] [stderr]       Adding mio v0.8.11 (available: v1.0.2)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.79)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding windows-sys v0.48.0 (available: v0.59.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (available: v0.52.6)
[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-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4069703fd558950988ac346ce40d84ea583c36f15a6d9b5ddd204219ef26b4ed
[INFO] running `Command { std: "docker" "start" "-a" "4069703fd558950988ac346ce40d84ea583c36f15a6d9b5ddd204219ef26b4ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4069703fd558950988ac346ce40d84ea583c36f15a6d9b5ddd204219ef26b4ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4069703fd558950988ac346ce40d84ea583c36f15a6d9b5ddd204219ef26b4ed", kill_on_drop: false }`
[INFO] [stdout] 4069703fd558950988ac346ce40d84ea583c36f15a6d9b5ddd204219ef26b4ed
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0ba3b21e3d016c230486b8043a9829fbd7e30d414c277da9db8234ff485a9a1
[INFO] running `Command { std: "docker" "start" "-a" "d0ba3b21e3d016c230486b8043a9829fbd7e30d414c277da9db8234ff485a9a1", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking mio v0.8.11
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-bigint v0.4.6
[INFO] [stderr]    Compiling enum-ordinalize v3.1.15
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]    Compiling educe v0.4.23
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking wta-reactor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.53s
[INFO] running `Command { std: "docker" "inspect" "d0ba3b21e3d016c230486b8043a9829fbd7e30d414c277da9db8234ff485a9a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0ba3b21e3d016c230486b8043a9829fbd7e30d414c277da9db8234ff485a9a1", kill_on_drop: false }`
[INFO] [stdout] d0ba3b21e3d016c230486b8043a9829fbd7e30d414c277da9db8234ff485a9a1