[INFO] cloning repository https://github.com/Logarithmus/matrix-ops-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Logarithmus/matrix-ops-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLogarithmus%2Fmatrix-ops-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLogarithmus%2Fmatrix-ops-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e4ada2aa2a56515bcc902efa2568b10671458fe8
[INFO] checking Logarithmus/matrix-ops-rs against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLogarithmus%2Fmatrix-ops-rs" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Logarithmus/matrix-ops-rs on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Logarithmus/matrix-ops-rs
[INFO] finished tweaking git repo https://github.com/Logarithmus/matrix-ops-rs
[INFO] tweaked toml for git repo https://github.com/Logarithmus/matrix-ops-rs written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Logarithmus/matrix-ops-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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f34065db1c29124db80ed1f424e0dac872e8434a22a613d7bb2915902636609f
[INFO] running `Command { std: "docker" "start" "-a" "f34065db1c29124db80ed1f424e0dac872e8434a22a613d7bb2915902636609f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f34065db1c29124db80ed1f424e0dac872e8434a22a613d7bb2915902636609f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f34065db1c29124db80ed1f424e0dac872e8434a22a613d7bb2915902636609f", kill_on_drop: false }`
[INFO] [stdout] f34065db1c29124db80ed1f424e0dac872e8434a22a613d7bb2915902636609f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6be2ed8a10d3a3b31b617e72491533170bbfb3ddb0e7f5a75106df19616ac6f2
[INFO] running `Command { std: "docker" "start" "-a" "6be2ed8a10d3a3b31b617e72491533170bbfb3ddb0e7f5a75106df19616ac6f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling getrandom v0.1.11
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking ppv-lite86 v0.2.5
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking vavp_lab1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/matrix.rs:234:29
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let (mat1, mat2) = (mat1.borrow(), mat2.borrow());
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Matrix<T>` does not implement `Borrow`, so calling `borrow` on `&Matrix<T>` 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] 234 -     let (mat1, mat2) = (mat1.borrow(), mat2.borrow());
[INFO] [stdout] 234 +     let (mat1, mat2) = (mat1, mat2.borrow());
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `Matrix<T>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 9   + #[derive(Clone)]
[INFO] [stdout] 10  | pub struct Matrix<T> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/matrix.rs:234:44
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let (mat1, mat2) = (mat1.borrow(), mat2.borrow());
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Matrix<T>` does not implement `Borrow`, so calling `borrow` on `&Matrix<T>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 234 -     let (mat1, mat2) = (mat1.borrow(), mat2.borrow());
[INFO] [stdout] 234 +     let (mat1, mat2) = (mat1.borrow(), mat2);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `Matrix<T>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 9   + #[derive(Clone)]
[INFO] [stdout] 10  | pub struct Matrix<T> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/matrix.rs:234:29
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let (mat1, mat2) = (mat1.borrow(), mat2.borrow());
[INFO] [stdout]     |                             ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Matrix<T>` does not implement `Borrow`, so calling `borrow` on `&Matrix<T>` 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] 234 -     let (mat1, mat2) = (mat1.borrow(), mat2.borrow());
[INFO] [stdout] 234 +     let (mat1, mat2) = (mat1, mat2.borrow());
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `Matrix<T>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 9   + #[derive(Clone)]
[INFO] [stdout] 10  | pub struct Matrix<T> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/matrix.rs:234:44
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let (mat1, mat2) = (mat1.borrow(), mat2.borrow());
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `Matrix<T>` does not implement `Borrow`, so calling `borrow` on `&Matrix<T>` copies the reference, which does not do anything and can be removed
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout] 234 -     let (mat1, mat2) = (mat1.borrow(), mat2.borrow());
[INFO] [stdout] 234 +     let (mat1, mat2) = (mat1.borrow(), mat2);
[INFO] [stdout]     |
[INFO] [stdout] help: if you meant to clone `Matrix<T>`, implement `Clone` for it
[INFO] [stdout]     |
[INFO] [stdout] 9   + #[derive(Clone)]
[INFO] [stdout] 10  | pub struct Matrix<T> {
[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 2.49s
[INFO] running `Command { std: "docker" "inspect" "6be2ed8a10d3a3b31b617e72491533170bbfb3ddb0e7f5a75106df19616ac6f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6be2ed8a10d3a3b31b617e72491533170bbfb3ddb0e7f5a75106df19616ac6f2", kill_on_drop: false }`
[INFO] [stdout] 6be2ed8a10d3a3b31b617e72491533170bbfb3ddb0e7f5a75106df19616ac6f2