[INFO] fetching crate signature-flow 1.0.0...
[INFO] checking signature-flow-1.0.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate signature-flow 1.0.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate signature-flow 1.0.0 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 signature-flow 1.0.0
[INFO] finished tweaking crates.io crate signature-flow 1.0.0
[INFO] tweaked toml for crates.io crate signature-flow 1.0.0 written to /workspace/builds/worker-3-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 20 packages to latest compatible versions
[INFO] [stderr]       Adding block-buffer v0.9.0 (available: v0.10.4)
[INFO] [stderr]       Adding block-padding v0.2.1 (available: v0.3.3)
[INFO] [stderr]       Adding digest v0.9.0 (available: v0.10.7)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v1.1.0)
[INFO] [stderr]       Adding hex-literal v0.3.4 (available: v0.4.1)
[INFO] [stderr]       Adding sha3 v0.9.1 (available: v0.10.8)
[INFO] [stderr]       Adding signature_derive v1.0.0-pre.3 (available: v1.0.0-pre.7)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[INFO] [stderr]       Adding synstructure v0.12.6 (available: v0.13.1)
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 25c44bb82909a1aacfba5b3e7b22cd56728de89f96bfa3c173a4f08fed753972
[INFO] running `Command { std: "docker" "start" "-a" "25c44bb82909a1aacfba5b3e7b22cd56728de89f96bfa3c173a4f08fed753972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "25c44bb82909a1aacfba5b3e7b22cd56728de89f96bfa3c173a4f08fed753972", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25c44bb82909a1aacfba5b3e7b22cd56728de89f96bfa3c173a4f08fed753972", kill_on_drop: false }`
[INFO] [stdout] 25c44bb82909a1aacfba5b3e7b22cd56728de89f96bfa3c173a4f08fed753972
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] ace1aee26794a1efcd9a459098c161d4845a8dd14ea3fde55d369c803bee1f76
[INFO] running `Command { std: "docker" "start" "-a" "ace1aee26794a1efcd9a459098c161d4845a8dd14ea3fde55d369c803bee1f76", kill_on_drop: false }`
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking block-padding v0.2.1
[INFO] [stderr]    Compiling hex-literal v0.3.4
[INFO] [stderr]     Checking signature-flow v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]     Checking sha3 v0.9.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `Command { std: "docker" "inspect" "ace1aee26794a1efcd9a459098c161d4845a8dd14ea3fde55d369c803bee1f76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ace1aee26794a1efcd9a459098c161d4845a8dd14ea3fde55d369c803bee1f76", kill_on_drop: false }`
[INFO] [stdout] ace1aee26794a1efcd9a459098c161d4845a8dd14ea3fde55d369c803bee1f76