[INFO] fetching crate stash 0.1.5...
[INFO] checking stash-0.1.5 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate stash 0.1.5 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate stash 0.1.5 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 stash 0.1.5
[INFO] finished tweaking crates.io crate stash 0.1.5
[INFO] tweaked toml for crates.io crate stash 0.1.5 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate stash 0.1.5 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 6a8b7d40c3acd772b1de358523f1781b3cd63e3d53d95ec17a38888c865af11a
[INFO] running `Command { std: "docker" "start" "-a" "6a8b7d40c3acd772b1de358523f1781b3cd63e3d53d95ec17a38888c865af11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a8b7d40c3acd772b1de358523f1781b3cd63e3d53d95ec17a38888c865af11a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a8b7d40c3acd772b1de358523f1781b3cd63e3d53d95ec17a38888c865af11a", kill_on_drop: false }`
[INFO] [stdout] 6a8b7d40c3acd772b1de358523f1781b3cd63e3d53d95ec17a38888c865af11a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] a1bf4a1af7f930eaf45cdaad4b04b6a8df8a6149827d4943f6f98101930a92d9
[INFO] running `Command { std: "docker" "start" "-a" "a1bf4a1af7f930eaf45cdaad4b04b6a8df8a6149827d4943f6f98101930a92d9", kill_on_drop: false }`
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking stash v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stdout] warning: unused import: `std::iter`
[INFO] [stdout]  --> benches/unique_stash.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::iter;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` 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 3.95s
[INFO] running `Command { std: "docker" "inspect" "a1bf4a1af7f930eaf45cdaad4b04b6a8df8a6149827d4943f6f98101930a92d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1bf4a1af7f930eaf45cdaad4b04b6a8df8a6149827d4943f6f98101930a92d9", kill_on_drop: false }`
[INFO] [stdout] a1bf4a1af7f930eaf45cdaad4b04b6a8df8a6149827d4943f6f98101930a92d9