[INFO] fetching crate mdbook-quiz-validate 0.3.8...
[INFO] checking mdbook-quiz-validate-0.3.8 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate mdbook-quiz-validate 0.3.8 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate mdbook-quiz-validate 0.3.8 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mdbook-quiz-validate 0.3.8
[INFO] finished tweaking crates.io crate mdbook-quiz-validate 0.3.8
[INFO] tweaked toml for crates.io crate mdbook-quiz-validate 0.3.8 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 101 packages to latest compatible versions
[INFO] [stderr]       Adding hashbrown v0.13.2 (available: v0.14.5)
[INFO] [stderr]       Adding hermit-abi v0.1.19 (available: v0.4.0)
[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 miette v5.10.0 (available: v7.2.0)
[INFO] [stderr]       Adding miette-derive v5.10.0 (available: v7.2.0)
[INFO] [stderr]       Adding owo-colors v3.5.0 (available: v4.1.0)
[INFO] [stderr]       Adding supports-color v2.1.0 (available: v3.0.1)
[INFO] [stderr]       Adding supports-hyperlinks v2.1.0 (available: v3.0.0)
[INFO] [stderr]       Adding supports-unicode v2.1.0 (available: v3.0.0)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.79)
[INFO] [stderr]       Adding sys-locale v0.2.4 (available: v0.3.1)
[INFO] [stderr]       Adding terminal_size v0.1.17 (available: v0.4.0)
[INFO] [stderr]       Adding textwrap v0.15.2 (available: v0.16.1)
[INFO] [stderr]       Adding toml v0.5.11 (available: v0.8.19)
[INFO] [stderr]       Adding unicode-width v0.1.14 (available: v0.2.0)
[INFO] [stderr]       Adding visibility v0.0.1 (available: v0.1.1)
[INFO] [stderr]       Adding windows-sys v0.45.0 (available: v0.59.0)
[INFO] [stderr]       Adding windows-sys v0.52.0 (available: v0.59.0)
[INFO] [stderr]       Adding windows-targets v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_i686_gnu v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_i686_msvc v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.42.2 (available: v0.52.6)
[INFO] [stderr]       Adding zspell v0.3.3 (available: v0.5.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76763bdcf738bf050e8996faf4f2c7a8e9a7953fa1872d24ba5f8c51eed34c75
[INFO] running `Command { std: "docker" "start" "-a" "76763bdcf738bf050e8996faf4f2c7a8e9a7953fa1872d24ba5f8c51eed34c75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76763bdcf738bf050e8996faf4f2c7a8e9a7953fa1872d24ba5f8c51eed34c75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76763bdcf738bf050e8996faf4f2c7a8e9a7953fa1872d24ba5f8c51eed34c75", kill_on_drop: false }`
[INFO] [stdout] 76763bdcf738bf050e8996faf4f2c7a8e9a7953fa1872d24ba5f8c51eed34c75
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe02fe7168fba6a67ad1ed8d613382cb9f9c4d8acc7c703ef93463a0dbecd6a2
[INFO] running `Command { std: "docker" "start" "-a" "fe02fe7168fba6a67ad1ed8d613382cb9f9c4d8acc7c703ef93463a0dbecd6a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]     Checking adler2 v2.0.0
[INFO] [stderr]     Checking gimli v0.31.0
[INFO] [stderr]     Checking object v0.36.4
[INFO] [stderr]     Checking is-terminal v0.4.13
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking smawk v0.3.2
[INFO] [stderr]     Checking rustc-demangle v0.1.24
[INFO] [stderr]    Compiling zspell v0.3.3
[INFO] [stderr]     Checking miniz_oxide v0.8.0
[INFO] [stderr]     Checking supports-color v2.1.0
[INFO] [stderr]     Checking textwrap v0.15.2
[INFO] [stderr]    Compiling visibility v0.0.1
[INFO] [stderr]     Checking supports-hyperlinks v2.1.0
[INFO] [stderr]     Checking supports-unicode v2.1.0
[INFO] [stderr]     Checking toml v0.5.11
[INFO] [stderr]    Compiling miette-derive v5.10.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking stringmetrics v2.2.2
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]     Checking sys-locale v0.2.4
[INFO] [stderr]     Checking unicode-id v0.3.5
[INFO] [stderr]     Checking home v0.5.9
[INFO] [stderr]     Checking tempfile v3.13.0
[INFO] [stderr]     Checking markdown v1.0.0-alpha.21
[INFO] [stderr]     Checking textwrap v0.16.1
[INFO] [stderr]     Checking mdbook-quiz-schema v0.3.8
[INFO] [stderr]     Checking fluid-let v1.0.0
[INFO] [stderr]     Checking toml-spanned-value v0.1.0
[INFO] [stderr]     Checking addr2line v0.24.1
[INFO] [stderr]     Checking backtrace v0.3.74
[INFO] [stderr]     Checking backtrace-ext v0.2.1
[INFO] [stderr]     Checking miette v5.10.0
[INFO] [stderr]     Checking mdbook-quiz-validate v0.3.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.00s
[INFO] running `Command { std: "docker" "inspect" "fe02fe7168fba6a67ad1ed8d613382cb9f9c4d8acc7c703ef93463a0dbecd6a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe02fe7168fba6a67ad1ed8d613382cb9f9c4d8acc7c703ef93463a0dbecd6a2", kill_on_drop: false }`
[INFO] [stdout] fe02fe7168fba6a67ad1ed8d613382cb9f9c4d8acc7c703ef93463a0dbecd6a2