[INFO] fetching crate fs_snapshot 0.1.2...
[INFO] checking fs_snapshot-0.1.2 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate fs_snapshot 0.1.2 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate fs_snapshot 0.1.2 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 fs_snapshot 0.1.2
[INFO] finished tweaking crates.io crate fs_snapshot 0.1.2
[INFO] tweaked toml for crates.io crate fs_snapshot 0.1.2 written to /workspace/builds/worker-2-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 67 packages to latest compatible versions
[INFO] [stderr]       Adding bitflags v1.3.2 (available: v2.6.0)
[INFO] [stderr]       Adding cfg-if v0.1.10 (available: v1.0.0)
[INFO] [stderr]       Adding clap v2.34.0 (available: v4.5.18)
[INFO] [stderr]       Adding concolor v0.0.8 (available: v0.1.1)
[INFO] [stderr]       Adding concolor-query v0.0.5 (available: v0.3.3)
[INFO] [stderr]       Adding crossbeam-channel v0.4.4 (available: v0.5.13)
[INFO] [stderr]       Adding crossbeam-utils v0.7.2 (available: v0.8.20)
[INFO] [stderr]       Adding heck v0.3.3 (available: v0.5.0)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (available: v0.4.0)
[INFO] [stderr]       Adding libtest-mimic v0.3.0 (available: v0.7.3)
[INFO] [stderr]       Adding strsim v0.8.0 (available: v0.11.1)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.77)
[INFO] [stderr]       Adding textwrap v0.11.0 (available: v0.16.1)
[INFO] [stderr]       Adding unicode-width v0.1.14 (available: v0.2.0)
[INFO] [stderr]       Adding yansi v0.5.1 (available: v1.0.1)
[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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 97e5e0dc211f8f676021c37cc9eb792c3b69f1d397d596aa46f97005bc56fb52
[INFO] running `Command { std: "docker" "start" "-a" "97e5e0dc211f8f676021c37cc9eb792c3b69f1d397d596aa46f97005bc56fb52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "97e5e0dc211f8f676021c37cc9eb792c3b69f1d397d596aa46f97005bc56fb52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97e5e0dc211f8f676021c37cc9eb792c3b69f1d397d596aa46f97005bc56fb52", kill_on_drop: false }`
[INFO] [stdout] 97e5e0dc211f8f676021c37cc9eb792c3b69f1d397d596aa46f97005bc56fb52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 7eb0b94b67092a81d42b1dee74e750ddd57ab19f6062e27398290507e964602e
[INFO] running `Command { std: "docker" "start" "-a" "7eb0b94b67092a81d42b1dee74e750ddd57ab19f6062e27398290507e964602e", kill_on_drop: false }`
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking regex-automata v0.4.7
[INFO] [stderr]     Checking concolor-query v0.0.5
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking concolor v0.0.8
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking globset v0.4.15
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking ignore v0.4.23
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking libtest-mimic v0.3.0
[INFO] [stderr]     Checking fs_snapshot v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.13s
[INFO] running `Command { std: "docker" "inspect" "7eb0b94b67092a81d42b1dee74e750ddd57ab19f6062e27398290507e964602e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7eb0b94b67092a81d42b1dee74e750ddd57ab19f6062e27398290507e964602e", kill_on_drop: false }`
[INFO] [stdout] 7eb0b94b67092a81d42b1dee74e750ddd57ab19f6062e27398290507e964602e