[INFO] fetching crate neon-serde3 0.10.0...
[INFO] checking neon-serde3-0.10.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate neon-serde3 0.10.0 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate neon-serde3 0.10.0 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 neon-serde3 0.10.0
[INFO] finished tweaking crates.io crate neon-serde3 0.10.0
[INFO] tweaked toml for crates.io crate neon-serde3 0.10.0 written to /workspace/builds/worker-7-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 27 packages to latest compatible versions
[INFO] [stderr]       Adding libloading v0.6.7 (available: v0.8.5)
[INFO] [stderr]       Adding neon v0.10.1 (available: v1.0.0)
[INFO] [stderr]       Adding neon-macros v0.10.1 (available: v1.0.0)
[INFO] [stderr]       Adding semver v0.9.0 (available: v1.0.23)
[INFO] [stderr]       Adding semver-parser v0.7.0 (available: v0.10.2)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[INFO] [stderr]       Adding syn-mid v0.5.4 (available: v0.6.0)
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e58f675e79caee5242b2682148b5715adfd5e047fd959cd7628dda93bb4c5c83
[INFO] running `Command { std: "docker" "start" "-a" "e58f675e79caee5242b2682148b5715adfd5e047fd959cd7628dda93bb4c5c83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e58f675e79caee5242b2682148b5715adfd5e047fd959cd7628dda93bb4c5c83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e58f675e79caee5242b2682148b5715adfd5e047fd959cd7628dda93bb4c5c83", kill_on_drop: false }`
[INFO] [stdout] e58f675e79caee5242b2682148b5715adfd5e047fd959cd7628dda93bb4c5c83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 12f019e3dc4fe81860de250d036e3ebb5261346b87107f5ea762a2faebe48dbf
[INFO] running `Command { std: "docker" "start" "-a" "12f019e3dc4fe81860de250d036e3ebb5261346b87107f5ea762a2faebe48dbf", kill_on_drop: false }`
[INFO] [stderr]    Compiling neon-build v0.10.1
[INFO] [stderr]     Checking semver-parser v0.7.0
[INFO] [stderr]     Checking libloading v0.6.7
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking num-iter v0.1.45
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking semver v0.9.0
[INFO] [stderr]     Checking neon-runtime v0.10.1
[INFO] [stderr]    Compiling neon v0.10.1
[INFO] [stderr]     Checking num v0.4.3
[INFO] [stderr]    Compiling syn-mid v0.5.4
[INFO] [stderr]    Compiling neon-macros v0.10.1
[INFO] [stderr]     Checking neon-serde3 v0.10.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.15s
[INFO] running `Command { std: "docker" "inspect" "12f019e3dc4fe81860de250d036e3ebb5261346b87107f5ea762a2faebe48dbf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12f019e3dc4fe81860de250d036e3ebb5261346b87107f5ea762a2faebe48dbf", kill_on_drop: false }`
[INFO] [stdout] 12f019e3dc4fe81860de250d036e3ebb5261346b87107f5ea762a2faebe48dbf