[INFO] fetching crate piper 0.2.4...
[INFO] checking piper-0.2.4 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate piper 0.2.4 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate piper 0.2.4 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 piper 0.2.4
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate piper 0.2.4
[INFO] tweaked toml for crates.io crate piper 0.2.4 written to /workspace/builds/worker-4-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 86 packages to latest compatible versions
[INFO] [stderr]       Adding anes v0.1.6 (available: v0.2.0)
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.6.0)
[INFO] [stderr]       Adding clap v3.2.25 (available: v4.5.18)
[INFO] [stderr]       Adding clap_lex v0.2.4 (available: v0.7.2)
[INFO] [stderr]       Adding criterion v0.4.0 (available: v0.5.1)
[INFO] [stderr]       Adding hashbrown v0.12.3 (available: v0.14.5)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (available: v0.4.0)
[INFO] [stderr]       Adding indexmap v1.9.3 (available: v2.5.0)
[INFO] [stderr]       Adding itertools v0.10.5 (available: v0.13.0)
[INFO] [stderr]       Adding linux-raw-sys v0.4.14 (available: v0.6.5)
[INFO] [stderr]       Adding os_str_bytes v6.6.1 (available: v7.0.0)
[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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] 7c5ad86544c62bafc23828fe786bd4ea94e27bf2caeb912d4cef0d0b3c82604b
[INFO] running `Command { std: "docker" "start" "-a" "7c5ad86544c62bafc23828fe786bd4ea94e27bf2caeb912d4cef0d0b3c82604b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c5ad86544c62bafc23828fe786bd4ea94e27bf2caeb912d4cef0d0b3c82604b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c5ad86544c62bafc23828fe786bd4ea94e27bf2caeb912d4cef0d0b3c82604b", kill_on_drop: false }`
[INFO] [stdout] 7c5ad86544c62bafc23828fe786bd4ea94e27bf2caeb912d4cef0d0b3c82604b
[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] 2a5abb85b8d3b353c2783b0184ec764c0df9cbb793ac52e41e5e92f1dac6e8a6
[INFO] running `Command { std: "docker" "start" "-a" "2a5abb85b8d3b353c2783b0184ec764c0df9cbb793ac52e41e5e92f1dac6e8a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]     Checking pin-project-lite v0.2.14
[INFO] [stderr]     Checking parking v2.2.1
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling rustix v0.38.37
[INFO] [stderr]     Checking futures-io v0.3.30
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]     Checking fastrand v2.1.1
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking half v2.4.1
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking bitflags v2.6.0
[INFO] [stderr]     Checking ciborium-io v0.2.2
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking regex-syntax v0.8.4
[INFO] [stderr]     Checking os_str_bytes v6.6.1
[INFO] [stderr]     Checking either v1.13.0
[INFO] [stderr]     Checking tracing-core v0.1.32
[INFO] [stderr]     Checking linux-raw-sys v0.4.14
[INFO] [stderr]     Checking futures-lite v2.3.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking walkdir v2.5.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking oorandom v11.1.4
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking async-task v4.7.1
[INFO] [stderr]     Checking easy-parallel v3.3.1
[INFO] [stderr]     Checking piper v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking ciborium-ll v0.2.2
[INFO] [stderr]     Checking concurrent-queue v2.5.0
[INFO] [stderr]     Checking event-listener v5.3.1
[INFO] [stderr]     Checking async-executor v1.13.1
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]     Checking clap v3.2.25
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking event-listener-strategy v0.5.2
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking async-lock v3.4.0
[INFO] [stderr]     Checking async-channel v2.3.1
[INFO] [stderr]     Checking criterion-plot v0.5.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.10.6
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]     Checking polling v3.7.3
[INFO] [stderr]     Checking async-io v2.3.4
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stderr]     Checking ciborium v0.2.2
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.4.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.43s
[INFO] running `Command { std: "docker" "inspect" "2a5abb85b8d3b353c2783b0184ec764c0df9cbb793ac52e41e5e92f1dac6e8a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a5abb85b8d3b353c2783b0184ec764c0df9cbb793ac52e41e5e92f1dac6e8a6", kill_on_drop: false }`
[INFO] [stdout] 2a5abb85b8d3b353c2783b0184ec764c0df9cbb793ac52e41e5e92f1dac6e8a6