[INFO] fetching crate hdl-bsp-orange-crab 0.1.0...
[INFO] checking hdl-bsp-orange-crab-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate hdl-bsp-orange-crab 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate hdl-bsp-orange-crab 0.1.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate hdl-bsp-orange-crab 0.1.0
[INFO] tweaked toml for crates.io crate hdl-bsp-orange-crab 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate hdl-bsp-orange-crab 0.1.0 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 hdl-bsp-orange-crab 0.1.0 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] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7000124dee1095999c9a10136999bc0eb65804cd68742194da06214d800d7275
[INFO] running `Command { std: "docker" "start" "-a" "7000124dee1095999c9a10136999bc0eb65804cd68742194da06214d800d7275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7000124dee1095999c9a10136999bc0eb65804cd68742194da06214d800d7275", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7000124dee1095999c9a10136999bc0eb65804cd68742194da06214d800d7275", kill_on_drop: false }`
[INFO] [stdout] 7000124dee1095999c9a10136999bc0eb65804cd68742194da06214d800d7275
[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 -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] 312dfb5f0d01e2f9d592d0216f4b57578399bd0dd675613b9ff7f2e62be9950d
[INFO] running `Command { std: "docker" "start" "-a" "312dfb5f0d01e2f9d592d0216f4b57578399bd0dd675613b9ff7f2e62be9950d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling substring v1.4.5
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]     Checking svg v0.10.0
[INFO] [stderr]     Checking evalexpr v6.6.0
[INFO] [stderr]     Checking petgraph v0.6.5
[INFO] [stderr]     Checking array-init v2.1.0
[INFO] [stderr]     Checking vcd v0.6.1
[INFO] [stderr]     Checking crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking crossbeam-deque v0.8.6
[INFO] [stderr]     Checking crossbeam v0.8.4
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling embed-doc-image v0.1.4
[INFO] [stderr]    Compiling rust-hdl-macros v0.46.0
[INFO] [stderr]     Checking rust-hdl-core v0.46.0
[INFO] [stderr]     Checking rust-hdl-widgets v0.46.0
[INFO] [stderr]     Checking rust-hdl-sim v0.46.0
[INFO] [stderr]     Checking rust-hdl-fpga-support v0.46.0
[INFO] [stderr]     Checking rust-hdl-hls v0.46.0
[INFO] [stderr]     Checking rust-hdl v0.46.0
[INFO] [stderr]     Checking hdl-bsp-orange-crab v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/synth.rs:35:15
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let dir = PathBuf::from_str(prefix).unwrap();
[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 `hdl-bsp-orange-crab` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<PathBuf, Infallible>
[INFO] [stdout]   --> src/synth.rs:35:15
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let dir = PathBuf::from_str(prefix).unwrap();
[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 `hdl-bsp-orange-crab` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "312dfb5f0d01e2f9d592d0216f4b57578399bd0dd675613b9ff7f2e62be9950d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "312dfb5f0d01e2f9d592d0216f4b57578399bd0dd675613b9ff7f2e62be9950d", kill_on_drop: false }`
[INFO] [stdout] 312dfb5f0d01e2f9d592d0216f4b57578399bd0dd675613b9ff7f2e62be9950d