[INFO] cloning repository https://github.com/Based-ML/Tenso_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Based-ML/Tenso_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBased-ML%2FTenso_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBased-ML%2FTenso_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 377af98a8ba841548ae642cf279d68055a66d13b
[INFO] checking Based-ML/Tenso_rs against master#fd0c901b00ee1e08a250039cdb90258603497e20 for pr-153692
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBased-ML%2FTenso_rs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Based-ML/Tenso_rs
[INFO] finished tweaking git repo https://github.com/Based-ML/Tenso_rs
[INFO] tweaked toml for git repo https://github.com/Based-ML/Tenso_rs written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Based-ML/Tenso_rs on toolchain fd0c901b00ee1e08a250039cdb90258603497e20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fd0c901b00ee1e08a250039cdb90258603497e20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Based-ML/Tenso_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" "+fd0c901b00ee1e08a250039cdb90258603497e20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+fd0c901b00ee1e08a250039cdb90258603497e20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 954da49c8bb217ce5e8dc3e0ab16e7f378755bfa8d4b044d54e8dfac9624d054
[INFO] running `Command { std: "docker" "start" "-a" "954da49c8bb217ce5e8dc3e0ab16e7f378755bfa8d4b044d54e8dfac9624d054", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "954da49c8bb217ce5e8dc3e0ab16e7f378755bfa8d4b044d54e8dfac9624d054", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "954da49c8bb217ce5e8dc3e0ab16e7f378755bfa8d4b044d54e8dfac9624d054", kill_on_drop: false }`
[INFO] [stdout] 954da49c8bb217ce5e8dc3e0ab16e7f378755bfa8d4b044d54e8dfac9624d054
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+fd0c901b00ee1e08a250039cdb90258603497e20" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbb72af2a3e1a406ae58e7f8b0c7d78f2c23f6aad3b5fe30571c15b6522da51e
[INFO] running `Command { std: "docker" "start" "-a" "dbb72af2a3e1a406ae58e7f8b0c7d78f2c23f6aad3b5fe30571c15b6522da51e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking matmul v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `t6`
[INFO] [stdout]   --> src/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let t6 = t4*t5;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_t6`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `T` should have a snake case name
[INFO] [stdout]   --> src/tensors.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn T(&mut self) -> Tensor {
[INFO] [stdout]    |            ^ help: convert the identifier to snake case: `t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/tensors.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |             write!(f, " [{}]\n", slice.to_owned());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 78 |             let _ = write!(f, " [{}]\n", slice.to_owned());
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t6`
[INFO] [stdout]   --> src/main.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let t6 = t4*t5;
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_t6`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `T` should have a snake case name
[INFO] [stdout]   --> src/tensors.rs:35:12
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub fn T(&mut self) -> Tensor {
[INFO] [stdout]    |            ^ help: convert the identifier to snake case: `t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/tensors.rs:78:13
[INFO] [stdout]    |
[INFO] [stdout] 78 |             write!(f, " [{}]\n", slice.to_owned());
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 78 |             let _ = write!(f, " [{}]\n", slice.to_owned());
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.34s
[INFO] running `Command { std: "docker" "inspect" "dbb72af2a3e1a406ae58e7f8b0c7d78f2c23f6aad3b5fe30571c15b6522da51e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbb72af2a3e1a406ae58e7f8b0c7d78f2c23f6aad3b5fe30571c15b6522da51e", kill_on_drop: false }`
[INFO] [stdout] dbb72af2a3e1a406ae58e7f8b0c7d78f2c23f6aad3b5fe30571c15b6522da51e