[INFO] cloning repository https://github.com/Dmarcano/autograd_rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Dmarcano/autograd_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDmarcano%2Fautograd_rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDmarcano%2Fautograd_rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] dd9100cb46d8468d22938d45020a50987eb4e805 [INFO] checking Dmarcano/autograd_rs/dd9100cb46d8468d22938d45020a50987eb4e805 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDmarcano%2Fautograd_rs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Dmarcano/autograd_rs 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 git repo https://github.com/Dmarcano/autograd_rs [INFO] finished tweaking git repo https://github.com/Dmarcano/autograd_rs [INFO] tweaked toml for git repo https://github.com/Dmarcano/autograd_rs written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Dmarcano/autograd_rs 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 8143a2b3e0be05cda2a6d5cdd9ebb12b6722e02975174b6e2cea63f06bbe73f6 [INFO] running `Command { std: "docker" "start" "-a" "8143a2b3e0be05cda2a6d5cdd9ebb12b6722e02975174b6e2cea63f06bbe73f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8143a2b3e0be05cda2a6d5cdd9ebb12b6722e02975174b6e2cea63f06bbe73f6", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8143a2b3e0be05cda2a6d5cdd9ebb12b6722e02975174b6e2cea63f06bbe73f6", kill_on_drop: false }` [INFO] [stdout] 8143a2b3e0be05cda2a6d5cdd9ebb12b6722e02975174b6e2cea63f06bbe73f6 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] cc9fd48f92c1214217566ab700d514f11870e516793f4274cd5656c20a7491e4 [INFO] running `Command { std: "docker" "start" "-a" "cc9fd48f92c1214217566ab700d514f11870e516793f4274cd5656c20a7491e4", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling libc v0.2.102 [INFO] [stderr] Compiling proc-macro2 v1.0.28 [INFO] [stderr] Compiling syn v1.0.74 [INFO] [stderr] Checking ppv-lite86 v0.2.10 [INFO] [stderr] Checking auto_ops v0.3.0 [INFO] [stderr] Checking matrixmultiply v0.3.1 [INFO] [stderr] Compiling quote v1.0.9 [INFO] [stderr] Checking getrandom v0.2.3 [INFO] [stderr] Checking rand_core v0.6.3 [INFO] [stderr] Checking num-complex v0.4.0 [INFO] [stderr] Checking num-integer v0.1.44 [INFO] [stderr] Checking approx v0.5.0 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.4 [INFO] [stderr] Checking ndarray v0.15.3 [INFO] [stderr] Compiling thiserror-impl v1.0.26 [INFO] [stderr] Checking thiserror v1.0.26 [INFO] [stderr] Checking autograd_rs v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing [INFO] [stdout] --> src/graph.rs:302:39 [INFO] [stdout] | [INFO] [stdout] 302 | let x1_grad = x1.grad.as_ref().deref().borrow().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `RefCell, Dim<[usize; 2]>>>` does not implement `Deref`, so calling `deref` on `&RefCell, Dim<[usize; 2]>>>` copies the reference, which does not do anything and can be removed [INFO] [stdout] = note: `#[warn(noop_method_call)]` on by default [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 302 - let x1_grad = x1.grad.as_ref().deref().borrow().clone(); [INFO] [stdout] 302 + let x1_grad = x1.grad.as_ref().borrow().clone(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing [INFO] [stdout] --> src/graph.rs:303:39 [INFO] [stdout] | [INFO] [stdout] 303 | let x2_grad = x2.grad.as_ref().deref().borrow().clone(); [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: the type `RefCell, Dim<[usize; 2]>>>` does not implement `Deref`, so calling `deref` on `&RefCell, Dim<[usize; 2]>>>` copies the reference, which does not do anything and can be removed [INFO] [stdout] help: remove this redundant call [INFO] [stdout] | [INFO] [stdout] 303 - let x2_grad = x2.grad.as_ref().deref().borrow().clone(); [INFO] [stdout] 303 + let x2_grad = x2.grad.as_ref().borrow().clone(); [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.22s [INFO] running `Command { std: "docker" "inspect" "cc9fd48f92c1214217566ab700d514f11870e516793f4274cd5656c20a7491e4", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "cc9fd48f92c1214217566ab700d514f11870e516793f4274cd5656c20a7491e4", kill_on_drop: false }` [INFO] [stdout] cc9fd48f92c1214217566ab700d514f11870e516793f4274cd5656c20a7491e4