[INFO] fetching crate cs_serde_bytes 0.12.2...
[INFO] checking cs_serde_bytes-0.12.2 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate cs_serde_bytes 0.12.2 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate cs_serde_bytes 0.12.2 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 cs_serde_bytes 0.12.2
[INFO] finished tweaking crates.io crate cs_serde_bytes 0.12.2
[INFO] tweaked toml for crates.io crate cs_serde_bytes 0.12.2 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 8 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-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] a8e550949c366de7d8141eca9f6f8b2c67f4ff7162fa6d4ce4c34f84ea1bc597
[INFO] running `Command { std: "docker" "start" "-a" "a8e550949c366de7d8141eca9f6f8b2c67f4ff7162fa6d4ce4c34f84ea1bc597", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a8e550949c366de7d8141eca9f6f8b2c67f4ff7162fa6d4ce4c34f84ea1bc597", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8e550949c366de7d8141eca9f6f8b2c67f4ff7162fa6d4ce4c34f84ea1bc597", kill_on_drop: false }`
[INFO] [stdout] a8e550949c366de7d8141eca9f6f8b2c67f4ff7162fa6d4ce4c34f84ea1bc597
[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] 2cdd808697e25fb4631dd11dcdf3983c3143bde8f356208f26c96dd590c4e9f7
[INFO] running `Command { std: "docker" "start" "-a" "2cdd808697e25fb4631dd11dcdf3983c3143bde8f356208f26c96dd590c4e9f7", kill_on_drop: false }`
[INFO] [stderr]     Checking serde_test v1.0.177
[INFO] [stderr]     Checking cs_serde_bytes v0.12.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Dst` is never constructed
[INFO] [stdout]   --> tests/test_derive.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 | struct Dst {
[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 0.85s
[INFO] running `Command { std: "docker" "inspect" "2cdd808697e25fb4631dd11dcdf3983c3143bde8f356208f26c96dd590c4e9f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cdd808697e25fb4631dd11dcdf3983c3143bde8f356208f26c96dd590c4e9f7", kill_on_drop: false }`
[INFO] [stdout] 2cdd808697e25fb4631dd11dcdf3983c3143bde8f356208f26c96dd590c4e9f7