[INFO] fetching crate serde_default 0.2.0...
[INFO] checking serde_default-0.2.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate serde_default 0.2.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate serde_default 0.2.0 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 serde_default 0.2.0
[INFO] finished tweaking crates.io crate serde_default 0.2.0
[INFO] tweaked toml for crates.io crate serde_default 0.2.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate serde_default 0.2.0 already has a lockfile, it will not be regenerated
[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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 026218a78dceac86300b9129ec1938e83d55f25b470c6c8df27faba6661ab3d2
[INFO] running `Command { std: "docker" "start" "-a" "026218a78dceac86300b9129ec1938e83d55f25b470c6c8df27faba6661ab3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "026218a78dceac86300b9129ec1938e83d55f25b470c6c8df27faba6661ab3d2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "026218a78dceac86300b9129ec1938e83d55f25b470c6c8df27faba6661ab3d2", kill_on_drop: false }`
[INFO] [stdout] 026218a78dceac86300b9129ec1938e83d55f25b470c6c8df27faba6661ab3d2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 5eef26deebe55b3d11dc02f2a3a3f0b3f364f8fbb307c334873dea8a86dcea1a
[INFO] running `Command { std: "docker" "start" "-a" "5eef26deebe55b3d11dc02f2a3a3f0b3f364f8fbb307c334873dea8a86dcea1a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.11.1
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]     Checking quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.69
[INFO] [stderr]     Checking darling_core v0.20.9
[INFO] [stderr]    Compiling darling_macro v0.20.9
[INFO] [stderr]     Checking darling v0.20.9
[INFO] [stderr]    Compiling serde_default v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.59s
[INFO] running `Command { std: "docker" "inspect" "5eef26deebe55b3d11dc02f2a3a3f0b3f364f8fbb307c334873dea8a86dcea1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5eef26deebe55b3d11dc02f2a3a3f0b3f364f8fbb307c334873dea8a86dcea1a", kill_on_drop: false }`
[INFO] [stdout] 5eef26deebe55b3d11dc02f2a3a3f0b3f364f8fbb307c334873dea8a86dcea1a