[INFO] fetching crate dlhn 0.1.7...
[INFO] checking dlhn-0.1.7 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate dlhn 0.1.7 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate dlhn 0.1.7 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 dlhn 0.1.7
[INFO] finished tweaking crates.io crate dlhn 0.1.7
[INFO] tweaked toml for crates.io crate dlhn 0.1.7 written to /workspace/builds/worker-5-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 20 packages to latest compatible versions
[INFO] [stderr]       Adding bigdecimal v0.3.1 (available: v0.4.5)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 899d195fd3e2cbd4e7164a93b35c03ce4d1c49650b0d75cf4b3d15616327c2e8
[INFO] running `Command { std: "docker" "start" "-a" "899d195fd3e2cbd4e7164a93b35c03ce4d1c49650b0d75cf4b3d15616327c2e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "899d195fd3e2cbd4e7164a93b35c03ce4d1c49650b0d75cf4b3d15616327c2e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "899d195fd3e2cbd4e7164a93b35c03ce4d1c49650b0d75cf4b3d15616327c2e8", kill_on_drop: false }`
[INFO] [stdout] 899d195fd3e2cbd4e7164a93b35c03ce4d1c49650b0d75cf4b3d15616327c2e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 4b15d64e0ecaa58a8d3e069b19ed9d3d2e59d5150cbe3040a4c038a3365d21e4
[INFO] running `Command { std: "docker" "start" "-a" "4b15d64e0ecaa58a8d3e069b19ed9d3d2e59d5150cbe3040a4c038a3365d21e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking iai v0.1.1
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking time v0.3.36
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]     Checking bigdecimal v0.3.1
[INFO] [stderr]    Compiling dlhn_derive v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]     Checking serde v1.0.210
[INFO] [stderr]     Checking serde_bytes v0.11.15
[INFO] [stderr]     Checking dlhn v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `encode_prefix_varint_vec` is never used
[INFO] [stdout]   --> src/prefix_varint.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 5  | pub(crate) trait PrefixVarint<const N: usize>: Sized {
[INFO] [stdout]    |                  ------------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 11 |     fn encode_prefix_varint_vec(self) -> 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 17.03s
[INFO] running `Command { std: "docker" "inspect" "4b15d64e0ecaa58a8d3e069b19ed9d3d2e59d5150cbe3040a4c038a3365d21e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b15d64e0ecaa58a8d3e069b19ed9d3d2e59d5150cbe3040a4c038a3365d21e4", kill_on_drop: false }`
[INFO] [stdout] 4b15d64e0ecaa58a8d3e069b19ed9d3d2e59d5150cbe3040a4c038a3365d21e4