[INFO] fetching crate fit-rust 0.1.8...
[INFO] checking fit-rust-0.1.8 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate fit-rust 0.1.8 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate fit-rust 0.1.8
[INFO] finished tweaking crates.io crate fit-rust 0.1.8
[INFO] tweaked toml for crates.io crate fit-rust 0.1.8 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fit-rust 0.1.8 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 fit-rust 0.1.8 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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 8c2f39d6a64a295f69b4fdae17e0ad157df87aeea2e4c8388c283233b16f1757
[INFO] running `Command { std: "docker" "start" "-a" "8c2f39d6a64a295f69b4fdae17e0ad157df87aeea2e4c8388c283233b16f1757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c2f39d6a64a295f69b4fdae17e0ad157df87aeea2e4c8388c283233b16f1757", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c2f39d6a64a295f69b4fdae17e0ad157df87aeea2e4c8388c283233b16f1757", kill_on_drop: false }`
[INFO] [stdout] 8c2f39d6a64a295f69b4fdae17e0ad157df87aeea2e4c8388c283233b16f1757
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 77151a9341fb6df33f14caa5a5058de9d10204340e3ec8949ee2a9ec105e4829
[INFO] running `Command { std: "docker" "start" "-a" "77151a9341fb6df33f14caa5a5058de9d10204340e3ec8949ee2a9ec105e4829", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling binrw_derive v0.13.0
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]    Compiling owo-colors v3.5.0
[INFO] [stderr]    Compiling either v1.9.0
[INFO] [stderr]    Compiling binrw v0.13.0
[INFO] [stderr]     Checking array-init v2.1.0
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking fit-rust v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/protocol/mod.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |     #[br(count = num_fields)]
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/protocol/mod.rs:91:34
[INFO] [stdout]    |
[INFO] [stdout] 91 |     #[br(if(dev_fields), count = dev_num_fields.unwrap_or_default())]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/protocol/mod.rs:85:18
[INFO] [stdout]    |
[INFO] [stdout] 85 |     #[br(count = num_fields)]
[INFO] [stdout]    |                  ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]   --> src/protocol/mod.rs:91:34
[INFO] [stdout]    |
[INFO] [stdout] 91 |     #[br(if(dev_fields), count = dev_num_fields.unwrap_or_default())]
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fit-rust` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `fit-rust` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "77151a9341fb6df33f14caa5a5058de9d10204340e3ec8949ee2a9ec105e4829", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77151a9341fb6df33f14caa5a5058de9d10204340e3ec8949ee2a9ec105e4829", kill_on_drop: false }`
[INFO] [stdout] 77151a9341fb6df33f14caa5a5058de9d10204340e3ec8949ee2a9ec105e4829