[INFO] fetching crate alicorn 0.1.2...
[INFO] checking alicorn-0.1.2 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate alicorn 0.1.2 into /workspace/builds/worker-7-tc2/source
[INFO] removed /workspace/builds/worker-7-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate alicorn 0.1.2
[INFO] finished tweaking crates.io crate alicorn 0.1.2
[INFO] tweaked toml for crates.io crate alicorn 0.1.2 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate alicorn 0.1.2 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate alicorn 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c08696a98b7b130003f8ed73c974ae59e097919dd14b67f0e30bbbdb2ce1d30
[INFO] running `Command { std: "docker" "start" "-a" "4c08696a98b7b130003f8ed73c974ae59e097919dd14b67f0e30bbbdb2ce1d30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c08696a98b7b130003f8ed73c974ae59e097919dd14b67f0e30bbbdb2ce1d30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c08696a98b7b130003f8ed73c974ae59e097919dd14b67f0e30bbbdb2ce1d30", kill_on_drop: false }`
[INFO] [stdout] 4c08696a98b7b130003f8ed73c974ae59e097919dd14b67f0e30bbbdb2ce1d30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1657bada93637d37fa6b06267e37f18f8ee01464065a018dfb71ec0f6c172e5
[INFO] running `Command { std: "docker" "start" "-a" "a1657bada93637d37fa6b06267e37f18f8ee01464065a018dfb71ec0f6c172e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]    Compiling env_home v0.1.0
[INFO] [stderr]    Compiling either v1.14.0
[INFO] [stderr]    Compiling cc v1.2.15
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling libc v0.2.170
[INFO] [stderr]    Compiling smallvec v1.14.0
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling bstr v1.11.3
[INFO] [stderr]    Compiling rustc-hash v2.1.1
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]    Compiling lua-src v547.0.0
[INFO] [stderr]    Compiling which v7.0.2
[INFO] [stderr]    Compiling luajit-src v210.5.12+a4f56a4
[INFO] [stderr]    Compiling mlua-sys v0.6.7
[INFO] [stderr]    Compiling mlua v0.10.3
[INFO] [stderr]    Compiling alicorn v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> build.rs:67:9
[INFO] [stdout]    |
[INFO] [stdout] 67 | /         std::path::PathBuf::from_str(
[INFO] [stdout] 68 | |             &std::env::var_os("OUT_DIR")
[INFO] [stdout] 69 | |                 .expect("OUT_DIR not set in build script???")
[INFO] [stdout] 70 | |                 .to_string_lossy(),
[INFO] [stdout] 71 | |         )
[INFO] [stdout]    | |_________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `alicorn` (build script) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a1657bada93637d37fa6b06267e37f18f8ee01464065a018dfb71ec0f6c172e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1657bada93637d37fa6b06267e37f18f8ee01464065a018dfb71ec0f6c172e5", kill_on_drop: false }`
[INFO] [stdout] a1657bada93637d37fa6b06267e37f18f8ee01464065a018dfb71ec0f6c172e5