[INFO] cloning repository https://github.com/aryan-regmi/smsolver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aryan-regmi/smsolver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faryan-regmi%2Fsmsolver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faryan-regmi%2Fsmsolver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fea6b455b05531bacb8568db86b7644fe227f855
[INFO] checking aryan-regmi/smsolver against try#54cf65b8d066c082e536455049b95943cf30378f for pr-151920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faryan-regmi%2Fsmsolver" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/aryan-regmi/smsolver
[INFO] finished tweaking git repo https://github.com/aryan-regmi/smsolver
[INFO] tweaked toml for git repo https://github.com/aryan-regmi/smsolver written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/aryan-regmi/smsolver 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/aryan-regmi/smsolver 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 09fe68c13ceed98d6d005ebe596803874aa4e679e0c97e256272886173b83f49
[INFO] running `Command { std: "docker" "start" "-a" "09fe68c13ceed98d6d005ebe596803874aa4e679e0c97e256272886173b83f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09fe68c13ceed98d6d005ebe596803874aa4e679e0c97e256272886173b83f49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09fe68c13ceed98d6d005ebe596803874aa4e679e0c97e256272886173b83f49", kill_on_drop: false }`
[INFO] [stdout] 09fe68c13ceed98d6d005ebe596803874aa4e679e0c97e256272886173b83f49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 38e5ae030f10dd2219f155a435050a2acdc56f0bc366face106c7960d14e0471
[INFO] running `Command { std: "docker" "start" "-a" "38e5ae030f10dd2219f155a435050a2acdc56f0bc366face106c7960d14e0471", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]     Checking smsolver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matrix.rs:490:13
[INFO] [stdout]     |
[INFO] [stdout] 490 |         let mut q = {
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matrix.rs:501:13
[INFO] [stdout]     |
[INFO] [stdout] 501 |         let mut r = self.clone();
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/matrix.rs:537:5
[INFO] [stdout]     |
[INFO] [stdout] 537 |     fn inverse(&self) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 540 |         let x = r.inverse().mul::<M>(&q.transpose());
[INFO] [stdout]     |                 ----------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/matrix.rs:540:13
[INFO] [stdout]     |
[INFO] [stdout] 540 |         let x = r.inverse().mul::<M>(&q.transpose());
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matrix.rs:545:24
[INFO] [stdout]     |
[INFO] [stdout] 545 |     fn inverse_inplace(mut self) -> Self {
[INFO] [stdout]     |                        ----^^^^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mat`
[INFO] [stdout]    --> src/system.rs:240:25
[INFO] [stdout]     |
[INFO] [stdout] 240 |     fn qr_factorization(mat: Matrix) -> (Matrix, Matrix) {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_mat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> src/system.rs:248:14
[INFO] [stdout]     |
[INFO] [stdout] 248 |         let (q, r) = System::qr_factorization(mat);
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/system.rs:248:17
[INFO] [stdout]     |
[INFO] [stdout] 248 |         let (q, r) = System::qr_factorization(mat);
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ncols`
[INFO] [stdout]    --> src/system.rs:257:13
[INFO] [stdout]     |
[INFO] [stdout] 257 |         let ncols = 2 * self.nodes.len();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_ncols`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/system.rs:259:13
[INFO] [stdout]     |
[INFO] [stdout] 259 |         let a = self.a_matrix();
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/system.rs:260:13
[INFO] [stdout]     |
[INFO] [stdout] 260 |         let b = self.b_matrix()?;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matrix.rs:490:13
[INFO] [stdout]     |
[INFO] [stdout] 490 |         let mut q = {
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matrix.rs:501:13
[INFO] [stdout]     |
[INFO] [stdout] 501 |         let mut r = self.clone();
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function cannot return without recursing
[INFO] [stdout]    --> src/matrix.rs:537:5
[INFO] [stdout]     |
[INFO] [stdout] 537 |     fn inverse(&self) -> Self {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stdout] ...
[INFO] [stdout] 540 |         let x = r.inverse().mul::<M>(&q.transpose());
[INFO] [stdout]     |                 ----------- recursive call site
[INFO] [stdout]     |
[INFO] [stdout]     = help: a `loop` may express intention better if this is on purpose
[INFO] [stdout]     = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/matrix.rs:540:13
[INFO] [stdout]     |
[INFO] [stdout] 540 |         let x = r.inverse().mul::<M>(&q.transpose());
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/matrix.rs:545:24
[INFO] [stdout]     |
[INFO] [stdout] 545 |     fn inverse_inplace(mut self) -> Self {
[INFO] [stdout]     |                        ----^^^^
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mat`
[INFO] [stdout]    --> src/system.rs:240:25
[INFO] [stdout]     |
[INFO] [stdout] 240 |     fn qr_factorization(mat: Matrix) -> (Matrix, Matrix) {
[INFO] [stdout]     |                         ^^^ help: if this is intentional, prefix it with an underscore: `_mat`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `q`
[INFO] [stdout]    --> src/system.rs:248:14
[INFO] [stdout]     |
[INFO] [stdout] 248 |         let (q, r) = System::qr_factorization(mat);
[INFO] [stdout]     |              ^ help: if this is intentional, prefix it with an underscore: `_q`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r`
[INFO] [stdout]    --> src/system.rs:248:17
[INFO] [stdout]     |
[INFO] [stdout] 248 |         let (q, r) = System::qr_factorization(mat);
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_r`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ncols`
[INFO] [stdout]    --> src/system.rs:257:13
[INFO] [stdout]     |
[INFO] [stdout] 257 |         let ncols = 2 * self.nodes.len();
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_ncols`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> src/system.rs:259:13
[INFO] [stdout]     |
[INFO] [stdout] 259 |         let a = self.a_matrix();
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]    --> src/system.rs:260:13
[INFO] [stdout]     |
[INFO] [stdout] 260 |         let b = self.b_matrix()?;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.87s
[INFO] running `Command { std: "docker" "inspect" "38e5ae030f10dd2219f155a435050a2acdc56f0bc366face106c7960d14e0471", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38e5ae030f10dd2219f155a435050a2acdc56f0bc366face106c7960d14e0471", kill_on_drop: false }`
[INFO] [stdout] 38e5ae030f10dd2219f155a435050a2acdc56f0bc366face106c7960d14e0471
