[INFO] fetching crate riscu 0.5.0...
[INFO] checking riscu-0.5.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate riscu 0.5.0 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate riscu 0.5.0 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 riscu 0.5.0
[INFO] finished tweaking crates.io crate riscu 0.5.0
[INFO] tweaked toml for crates.io crate riscu 0.5.0 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding byteorder v1.4.3 (available: v1.5.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (available: v1.0.0)
[INFO] [stderr]       Adding getrandom v0.1.16 (available: v0.2.15)
[INFO] [stderr]       Adding goblin v0.3.4 (available: v0.8.2)
[INFO] [stderr]       Adding rand v0.7.3 (available: v0.8.5)
[INFO] [stderr]       Adding rand_chacha v0.2.2 (available: v0.3.1)
[INFO] [stderr]       Adding rand_core v0.5.1 (available: v0.6.4)
[INFO] [stderr]       Adding rand_hc v0.2.0 (available: v0.3.2)
[INFO] [stderr]       Adding redox_syscall v0.1.57 (available: v0.5.6)
[INFO] [stderr]       Adding remove_dir_all v0.5.3 (available: v0.8.4)
[INFO] [stderr]       Adding scroll v0.10.2 (available: v0.12.0)
[INFO] [stderr]       Adding scroll_derive v0.10.5 (available: v0.12.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[INFO] [stderr]       Adding tempfile v3.1.0 (available: v3.12.0)
[INFO] [stderr]       Adding wasi v0.9.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[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-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] 4cc59897c8fa2390628ff59f9e5fe50092b887c0fb78b6c169f0d17ff3d0d104
[INFO] running `Command { std: "docker" "start" "-a" "4cc59897c8fa2390628ff59f9e5fe50092b887c0fb78b6c169f0d17ff3d0d104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cc59897c8fa2390628ff59f9e5fe50092b887c0fb78b6c169f0d17ff3d0d104", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cc59897c8fa2390628ff59f9e5fe50092b887c0fb78b6c169f0d17ff3d0d104", kill_on_drop: false }`
[INFO] [stdout] 4cc59897c8fa2390628ff59f9e5fe50092b887c0fb78b6c169f0d17ff3d0d104
[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] 73e5eb207b8a13f8c6969023dcb6d7223b3afdaed9339e10d18da8c8689a4b3d
[INFO] running `Command { std: "docker" "start" "-a" "73e5eb207b8a13f8c6969023dcb6d7223b3afdaed9339e10d18da8c8689a4b3d", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling cargo-husky v1.5.0
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking scroll v0.10.2
[INFO] [stderr]     Checking goblin v0.3.4
[INFO] [stderr]     Checking riscu v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.78s
[INFO] running `Command { std: "docker" "inspect" "73e5eb207b8a13f8c6969023dcb6d7223b3afdaed9339e10d18da8c8689a4b3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73e5eb207b8a13f8c6969023dcb6d7223b3afdaed9339e10d18da8c8689a4b3d", kill_on_drop: false }`
[INFO] [stdout] 73e5eb207b8a13f8c6969023dcb6d7223b3afdaed9339e10d18da8c8689a4b3d