[INFO] fetching crate harness-algebra 0.6.0...
[INFO] checking harness-algebra-0.6.0 against 656ccbe796ff98def9b555c118e1620c5389e3b2 for pr-133502-25
[INFO] extracting crate harness-algebra 0.6.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate harness-algebra 0.6.0
[INFO] finished tweaking crates.io crate harness-algebra 0.6.0
[INFO] tweaked toml for crates.io crate harness-algebra 0.6.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate harness-algebra 0.6.0 on toolchain 656ccbe796ff98def9b555c118e1620c5389e3b2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate harness-algebra 0.6.0 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" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 98ad5f7c3048100d8de4d7806c5d025f027fbba19c753c5b9df625f9f1e0ee9d
[INFO] running `Command { std: "docker" "start" "98ad5f7c3048100d8de4d7806c5d025f027fbba19c753c5b9df625f9f1e0ee9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98ad5f7c3048100d8de4d7806c5d025f027fbba19c753c5b9df625f9f1e0ee9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "98ad5f7c3048100d8de4d7806c5d025f027fbba19c753c5b9df625f9f1e0ee9d" "/opt/rustwide/cargo-home/bin/cargo" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98ad5f7c3048100d8de4d7806c5d025f027fbba19c753c5b9df625f9f1e0ee9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "98ad5f7c3048100d8de4d7806c5d025f027fbba19c753c5b9df625f9f1e0ee9d" "/opt/rustwide/cargo-home/bin/cargo" "+656ccbe796ff98def9b555c118e1620c5389e3b2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking harness-algebra v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `total_written` is never read
[INFO] [stdout]    --> src/tensors/dynamic/block.rs:457:9
[INFO] [stdout]     |
[INFO] [stdout] 454 |         total_written += 3;
[INFO] [stdout]     |         ------------------ `total_written` is overwritten here before the previous value is read
[INFO] [stdout] ...
[INFO] [stdout] 457 |         total_written += 2;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total_written` is never read
[INFO] [stdout]    --> src/tensors/dynamic/block.rs:454:9
[INFO] [stdout]     |
[INFO] [stdout] 454 |         total_written += 3;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 461 |     total_written += width;
[INFO] [stdout]     |     ---------------------- `total_written` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total_written` is never read
[INFO] [stdout]    --> src/tensors/dynamic/block.rs:461:5
[INFO] [stdout]     |
[INFO] [stdout] 461 |     total_written += width;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total_written` is never read
[INFO] [stdout]    --> src/tensors/dynamic/block.rs:457:9
[INFO] [stdout]     |
[INFO] [stdout] 454 |         total_written += 3;
[INFO] [stdout]     |         ------------------ `total_written` is overwritten here before the previous value is read
[INFO] [stdout] ...
[INFO] [stdout] 457 |         total_written += 2;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total_written` is never read
[INFO] [stdout]    --> src/tensors/dynamic/block.rs:454:9
[INFO] [stdout]     |
[INFO] [stdout] 454 |         total_written += 3;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 461 |     total_written += width;
[INFO] [stdout]     |     ---------------------- `total_written` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `total_written` is never read
[INFO] [stdout]    --> src/tensors/dynamic/block.rs:461:5
[INFO] [stdout]     |
[INFO] [stdout] 461 |     total_written += width;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.49s
[INFO] running `Command { std: "docker" "inspect" "98ad5f7c3048100d8de4d7806c5d025f027fbba19c753c5b9df625f9f1e0ee9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98ad5f7c3048100d8de4d7806c5d025f027fbba19c753c5b9df625f9f1e0ee9d", kill_on_drop: false }`
[INFO] [stdout] 98ad5f7c3048100d8de4d7806c5d025f027fbba19c753c5b9df625f9f1e0ee9d