[INFO] cloning repository https://github.com/mk0218/rust-matrix-skeleton
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mk0218/rust-matrix-skeleton" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmk0218%2Frust-matrix-skeleton", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmk0218%2Frust-matrix-skeleton'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 392d59d04d5edc5aadfb032198d432ac7a24392c
[INFO] checking mk0218/rust-matrix-skeleton against try#54cf65b8d066c082e536455049b95943cf30378f for pr-151920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmk0218%2Frust-matrix-skeleton" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mk0218/rust-matrix-skeleton
[INFO] finished tweaking git repo https://github.com/mk0218/rust-matrix-skeleton
[INFO] tweaked toml for git repo https://github.com/mk0218/rust-matrix-skeleton written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mk0218/rust-matrix-skeleton on toolchain 54cf65b8d066c082e536455049b95943cf30378f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mk0218/rust-matrix-skeleton 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" "+54cf65b8d066c082e536455049b95943cf30378f" "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-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61b8462e65875dfeb2b9cc78788ae33912cea995792c0d364ea1df7a9d0ed1ae
[INFO] running `Command { std: "docker" "start" "-a" "61b8462e65875dfeb2b9cc78788ae33912cea995792c0d364ea1df7a9d0ed1ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61b8462e65875dfeb2b9cc78788ae33912cea995792c0d364ea1df7a9d0ed1ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61b8462e65875dfeb2b9cc78788ae33912cea995792c0d364ea1df7a9d0ed1ae", kill_on_drop: false }`
[INFO] [stdout] 61b8462e65875dfeb2b9cc78788ae33912cea995792c0d364ea1df7a9d0ed1ae
[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" "-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+54cf65b8d066c082e536455049b95943cf30378f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 62f52fe8de79acc066e3ba572786dee5722159e1ba6f091732403d0ec281928f
[INFO] running `Command { std: "docker" "start" "-a" "62f52fe8de79acc066e3ba572786dee5722159e1ba6f091732403d0ec281928f", kill_on_drop: false }`
[INFO] [stderr]     Checking matrix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]  --> src/matrix/ops.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn add(self, rhs: Self) -> Self::Output {
[INFO] [stdout]   |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]   --> src/matrix/ops.rs:16:18
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn sub(self, rhs: Self) -> Self::Output {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]   --> src/matrix/ops.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn mul(self, rhs: Self) -> Self::Output {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scalar`
[INFO] [stdout]   --> src/matrix/ops.rs:30:29
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn scalar_mul(self, scalar: i32) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_scalar`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]  --> src/matrix/ops.rs:8:18
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn add(self, rhs: Self) -> Self::Output {
[INFO] [stdout]   |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]   --> src/matrix/ops.rs:16:18
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn sub(self, rhs: Self) -> Self::Output {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rhs`
[INFO] [stdout]   --> src/matrix/ops.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |     fn mul(self, rhs: Self) -> Self::Output {
[INFO] [stdout]    |                  ^^^ help: if this is intentional, prefix it with an underscore: `_rhs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scalar`
[INFO] [stdout]   --> src/matrix/ops.rs:30:29
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn scalar_mul(self, scalar: i32) -> Self {
[INFO] [stdout]    |                             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_scalar`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "62f52fe8de79acc066e3ba572786dee5722159e1ba6f091732403d0ec281928f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62f52fe8de79acc066e3ba572786dee5722159e1ba6f091732403d0ec281928f", kill_on_drop: false }`
[INFO] [stdout] 62f52fe8de79acc066e3ba572786dee5722159e1ba6f091732403d0ec281928f
