[INFO] fetching crate afe4404 0.2.4...
[INFO] checking afe4404-0.2.4 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate afe4404 0.2.4 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate afe4404 0.2.4
[INFO] finished tweaking crates.io crate afe4404 0.2.4
[INFO] tweaked toml for crates.io crate afe4404 0.2.4 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate afe4404 0.2.4 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] [stderr]       Adding modular-bitfield v0.11.2 (available: v0.13.0)
[INFO] [stderr]       Adding spin v0.9.8 (available: v0.10.0)
[INFO] [stderr]       Adding uom v0.33.0 (available: v0.37.0)
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a6375fbcc30de1993fb994e2876f8ebb5f9a5b338259d6bd4678aa89fe7d9fe4
[INFO] running `Command { std: "docker" "start" "-a" "a6375fbcc30de1993fb994e2876f8ebb5f9a5b338259d6bd4678aa89fe7d9fe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6375fbcc30de1993fb994e2876f8ebb5f9a5b338259d6bd4678aa89fe7d9fe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6375fbcc30de1993fb994e2876f8ebb5f9a5b338259d6bd4678aa89fe7d9fe4", kill_on_drop: false }`
[INFO] [stdout] a6375fbcc30de1993fb994e2876f8ebb5f9a5b338259d6bd4678aa89fe7d9fe4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 7bbd655fe83d3503d7b19bf0f81bc1e76cb6fcd98e65af7ba1080987d3bb9ec3
[INFO] running `Command { std: "docker" "start" "-a" "7bbd655fe83d3503d7b19bf0f81bc1e76cb6fcd98e65af7ba1080987d3bb9ec3", kill_on_drop: false }`
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking uom v0.33.0
[INFO] [stderr]    Compiling codegen v0.2.0
[INFO] [stderr]    Compiling afe4404 v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> build.rs:24:28
[INFO] [stdout]    |
[INFO] [stdout] 24 |                 names.push(field.parse().expect("Cannot parse register name."));
[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 `afe4404` (build script) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7bbd655fe83d3503d7b19bf0f81bc1e76cb6fcd98e65af7ba1080987d3bb9ec3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bbd655fe83d3503d7b19bf0f81bc1e76cb6fcd98e65af7ba1080987d3bb9ec3", kill_on_drop: false }`
[INFO] [stdout] 7bbd655fe83d3503d7b19bf0f81bc1e76cb6fcd98e65af7ba1080987d3bb9ec3