[INFO] fetching crate tinygrad 0.1.0...
[INFO] checking tinygrad-0.1.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate tinygrad 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate tinygrad 0.1.0 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tinygrad 0.1.0
[INFO] finished tweaking crates.io crate tinygrad 0.1.0
[INFO] tweaked toml for crates.io crate tinygrad 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] [stderr]       Adding ndarray v0.15.6 (available: v0.16.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5680e38dca2973536ca7dc68dc8687c2db2a30eb355dc13216d2e156625e9a0f
[INFO] running `Command { std: "docker" "start" "-a" "5680e38dca2973536ca7dc68dc8687c2db2a30eb355dc13216d2e156625e9a0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5680e38dca2973536ca7dc68dc8687c2db2a30eb355dc13216d2e156625e9a0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5680e38dca2973536ca7dc68dc8687c2db2a30eb355dc13216d2e156625e9a0f", kill_on_drop: false }`
[INFO] [stdout] 5680e38dca2973536ca7dc68dc8687c2db2a30eb355dc13216d2e156625e9a0f
[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 -Dtail_expr_drop_order" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad46dbea6b27f4b9b38941b676d7e6f7f3d3e2cc9f3e44043a8e90cb8b8ed2e6
[INFO] running `Command { std: "docker" "start" "-a" "ad46dbea6b27f4b9b38941b676d7e6f7f3d3e2cc9f3e44043a8e90cb8b8ed2e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling matrixmultiply v0.3.9
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking num-complex v0.4.6
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking tinygrad v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Dot` is never constructed
[INFO] [stdout]    --> src/lib.rs:231:8
[INFO] [stdout]     |
[INFO] [stdout] 231 | struct Dot;
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sum` is never constructed
[INFO] [stdout]    --> src/lib.rs:234:8
[INFO] [stdout]     |
[INFO] [stdout] 234 | struct Sum;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Dot` is never constructed
[INFO] [stdout]    --> src/lib.rs:231:8
[INFO] [stdout]     |
[INFO] [stdout] 231 | struct Dot;
[INFO] [stdout]     |        ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sum` is never constructed
[INFO] [stdout]    --> src/lib.rs:234:8
[INFO] [stdout]     |
[INFO] [stdout] 234 | struct Sum;
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.95s
[INFO] running `Command { std: "docker" "inspect" "ad46dbea6b27f4b9b38941b676d7e6f7f3d3e2cc9f3e44043a8e90cb8b8ed2e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad46dbea6b27f4b9b38941b676d7e6f7f3d3e2cc9f3e44043a8e90cb8b8ed2e6", kill_on_drop: false }`
[INFO] [stdout] ad46dbea6b27f4b9b38941b676d7e6f7f3d3e2cc9f3e44043a8e90cb8b8ed2e6