[INFO] fetching crate zchunk 0.2.0...
[INFO] checking zchunk-0.2.0 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate zchunk 0.2.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate zchunk 0.2.0 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 zchunk 0.2.0
[INFO] finished tweaking crates.io crate zchunk 0.2.0
[INFO] tweaked toml for crates.io crate zchunk 0.2.0 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 42 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v1.1.0)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (available: v0.6.5)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[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] 66559096eb0abed657711ef0f280bb2bbb8527241d2528e3d6acfd2276796c0d
[INFO] running `Command { std: "docker" "start" "-a" "66559096eb0abed657711ef0f280bb2bbb8527241d2528e3d6acfd2276796c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66559096eb0abed657711ef0f280bb2bbb8527241d2528e3d6acfd2276796c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66559096eb0abed657711ef0f280bb2bbb8527241d2528e3d6acfd2276796c0d", kill_on_drop: false }`
[INFO] [stdout] 66559096eb0abed657711ef0f280bb2bbb8527241d2528e3d6acfd2276796c0d
[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] 59ae1e511dfc41d27cbdcdef885a8d9db6c26a70226dcc3df6f299409fc2d13e
[INFO] running `Command { std: "docker" "start" "-a" "59ae1e511dfc41d27cbdcdef885a8d9db6c26a70226dcc3df6f299409fc2d13e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling zstd-safe v7.2.1
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking tempfile v3.13.0
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]    Compiling jobserver v0.1.32
[INFO] [stderr]    Compiling cc v1.1.22
[INFO] [stderr]    Compiling zstd-sys v2.0.13+zstd.1.5.6
[INFO] [stderr]     Checking zstd v0.13.2
[INFO] [stderr]     Checking zchunk v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `DataChunk` is never constructed
[INFO] [stdout]    --> src/format.rs:482:8
[INFO] [stdout]     |
[INFO] [stdout] 482 | struct DataChunk(Vec<u8>);
[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: struct `DataChunk` is never constructed
[INFO] [stdout]    --> src/format.rs:482:8
[INFO] [stdout]     |
[INFO] [stdout] 482 | struct DataChunk(Vec<u8>);
[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 17.23s
[INFO] running `Command { std: "docker" "inspect" "59ae1e511dfc41d27cbdcdef885a8d9db6c26a70226dcc3df6f299409fc2d13e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59ae1e511dfc41d27cbdcdef885a8d9db6c26a70226dcc3df6f299409fc2d13e", kill_on_drop: false }`
[INFO] [stdout] 59ae1e511dfc41d27cbdcdef885a8d9db6c26a70226dcc3df6f299409fc2d13e