[INFO] fetching crate nnapi-sys 0.1.1...
[INFO] checking nnapi-sys-0.1.1 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate nnapi-sys 0.1.1 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate nnapi-sys 0.1.1
[INFO] finished tweaking crates.io crate nnapi-sys 0.1.1
[INFO] tweaked toml for crates.io crate nnapi-sys 0.1.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate nnapi-sys 0.1.1 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 nnapi-sys 0.1.1 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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 12128841df30a445a199d926cf7543a7174372d59dec42a6c1fffa5f6eb7a847
[INFO] running `Command { std: "docker" "start" "-a" "12128841df30a445a199d926cf7543a7174372d59dec42a6c1fffa5f6eb7a847", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12128841df30a445a199d926cf7543a7174372d59dec42a6c1fffa5f6eb7a847", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12128841df30a445a199d926cf7543a7174372d59dec42a6c1fffa5f6eb7a847", kill_on_drop: false }`
[INFO] [stdout] 12128841df30a445a199d926cf7543a7174372d59dec42a6c1fffa5f6eb7a847
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] b71bcfe15e714e2e1a60c92ab5212410bd0cfde393dbd33f45e1d346d5cb838e
[INFO] running `Command { std: "docker" "start" "-a" "b71bcfe15e714e2e1a60c92ab5212410bd0cfde393dbd33f45e1d346d5cb838e", kill_on_drop: false }`
[INFO] [stderr]     Checking nnapi-sys v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> examples/add_arrays.rs:111:13
[INFO] [stdout]     |
[INFO] [stdout] 111 |             (lhs.len() * std::mem::size_of::<f32>()).try_into().unwrap(),
[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]    --> examples/add_arrays.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |             (rhs.len() * std::mem::size_of::<f32>()).try_into().unwrap(),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> examples/add_arrays.rs:132:13
[INFO] [stdout]     |
[INFO] [stdout] 132 |             (out.len() * std::mem::size_of::<f32>()).try_into().unwrap(),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nnapi-sys` (example "add_arrays") due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "b71bcfe15e714e2e1a60c92ab5212410bd0cfde393dbd33f45e1d346d5cb838e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b71bcfe15e714e2e1a60c92ab5212410bd0cfde393dbd33f45e1d346d5cb838e", kill_on_drop: false }`
[INFO] [stdout] b71bcfe15e714e2e1a60c92ab5212410bd0cfde393dbd33f45e1d346d5cb838e