[INFO] updating cached repository https://github.com/a-yuto/vec
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8c29e096021092b1a559e3c7be374588253f5078
[INFO] checking a-yuto/vec against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fa-yuto%2Fvec" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/a-yuto/vec on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/a-yuto/vec
[INFO] finished tweaking git repo https://github.com/a-yuto/vec
[INFO] tweaked toml for git repo https://github.com/a-yuto/vec written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/a-yuto/vec already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 13c46402eb9b6fab78f5f008cdd1a84ac043ae92d59bb07db9093f77daa87f6d
[INFO] running `"docker" "start" "-a" "13c46402eb9b6fab78f5f008cdd1a84ac043ae92d59bb07db9093f77daa87f6d"`
[INFO] [stderr]     Checking matrix v0.22.0
[INFO] [stderr]     Checking vec v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `nearly_eq::*`
[INFO] [stderr]  --> src/VecOpp.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use nearly_eq::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nearly_eq::*`
[INFO] [stderr]  --> src/Matrix.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use nearly_eq::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `buf` is never read
[INFO] [stderr]    --> src/Matrix.rs:277:13
[INFO] [stderr]     |
[INFO] [stderr] 277 |     let mut buf   = 0.0;
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/Matrix.rs:274:16
[INFO] [stderr]     |
[INFO] [stderr] 274 | pub fn inverse(mut a: &mut Matrix) -> Matrix{
[INFO] [stderr]     |                ----^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/Matrix.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `VecOpp` should have a snake case name
[INFO] [stderr]  --> src/lib.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub mod VecOpp;
[INFO] [stderr]   |         ^^^^^^ help: convert the identifier to snake case: `vec_opp`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `Matrix` should have a snake case name
[INFO] [stderr]  --> src/lib.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub mod Matrix;
[INFO] [stderr]   |         ^^^^^^ help: convert the identifier to snake case: `matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: function `LU_cal` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:181:8
[INFO] [stderr]     |
[INFO] [stderr] 181 | pub fn LU_cal(i: usize,N: usize,mut temp_l: Matrix,mut temp_u: Matrix,mut lu: Matrix,matA: &Matrix) -> (Matrix,Matrix) {
[INFO] [stderr]     |        ^^^^^^ help: convert the identifier to snake case: `lu_cal`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:181:24
[INFO] [stderr]     |
[INFO] [stderr] 181 | pub fn LU_cal(i: usize,N: usize,mut temp_l: Matrix,mut temp_u: Matrix,mut lu: Matrix,matA: &Matrix) -> (Matrix,Matrix) {
[INFO] [stderr]     |                        ^ help: convert the identifier to snake case: `n`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `matA` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:181:86
[INFO] [stderr]     |
[INFO] [stderr] 181 | pub fn LU_cal(i: usize,N: usize,mut temp_l: Matrix,mut temp_u: Matrix,mut lu: Matrix,matA: &Matrix) -> (Matrix,Matrix) {
[INFO] [stderr]     |                                                                                      ^^^^ help: convert the identifier to snake case: `mat_a`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `A1` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:204:13
[INFO] [stderr]     |
[INFO] [stderr] 204 |     let mut A1 = zero(n,n);
[INFO] [stderr]     |             ^^ help: convert the identifier to snake case: `a1`
[INFO] [stderr] 
[INFO] [stderr] warning: function `LU` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:218:8
[INFO] [stderr]     |
[INFO] [stderr] 218 | pub fn LU(a: &Matrix) -> (Result<Matrix,String>,Result<Matrix,String>) {
[INFO] [stderr]     |        ^^ help: convert the identifier to snake case: `lu`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:219:9
[INFO] [stderr]     |
[INFO] [stderr] 219 |     let N = a.col;
[INFO] [stderr]     |         ^ help: convert the identifier to snake case: `n`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `L` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:224:10
[INFO] [stderr]     |
[INFO] [stderr] 224 |     let (L,U) = LU_cal(0,N,temp_l,temp_u,lu,a);
[INFO] [stderr]     |          ^ help: convert the identifier to snake case: `l`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `U` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:224:12
[INFO] [stderr]     |
[INFO] [stderr] 224 |     let (L,U) = LU_cal(0,N,temp_l,temp_u,lu,a);
[INFO] [stderr]     |            ^ help: convert the identifier to snake case (notice the capitalization): `u`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Det` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:258:9
[INFO] [stderr]     |
[INFO] [stderr] 258 |     let Det:Result<f64,String> = match is_tri(&a) {
[INFO] [stderr]     |         ^^^ help: convert the identifier to snake case: `det`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `inv_A` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:276:13
[INFO] [stderr]     |
[INFO] [stderr] 276 |     let mut inv_A = iden(n);
[INFO] [stderr]     |             ^^^^^ help: convert the identifier to snake case: `inv_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `nearly_eq::*`
[INFO] [stderr]  --> src/Matrix.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use nearly_eq::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0601]: `main` function not found in crate `vec`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `src/main.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] warning: value assigned to `buf` is never read
[INFO] [stderr]    --> src/Matrix.rs:277:13
[INFO] [stderr]     |
[INFO] [stderr] 277 |     let mut buf   = 0.0;
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `vec`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/Matrix.rs:343:13
[INFO] [stderr]     |
[INFO] [stderr] 343 |         let a = Matrix{
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/Matrix.rs:351:13
[INFO] [stderr]     |
[INFO] [stderr] 351 |         let b = -160.0;
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/Matrix.rs:274:16
[INFO] [stderr]     |
[INFO] [stderr] 274 | pub fn inverse(mut a: &mut Matrix) -> Matrix{
[INFO] [stderr]     |                ----^
[INFO] [stderr]     |                |
[INFO] [stderr]     |                help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `det_works`
[INFO] [stderr]    --> src/Matrix.rs:342:12
[INFO] [stderr]     |
[INFO] [stderr] 342 |     pub fn det_works() {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rev_works`
[INFO] [stderr]    --> src/Matrix.rs:624:12
[INFO] [stderr]     |
[INFO] [stderr] 624 |     pub fn rev_works() {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/Matrix.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `VecOpp` should have a snake case name
[INFO] [stderr]  --> src/lib.rs:3:9
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub mod VecOpp;
[INFO] [stderr]   |         ^^^^^^ help: convert the identifier to snake case: `vec_opp`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: module `Matrix` should have a snake case name
[INFO] [stderr]  --> src/lib.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub mod Matrix;
[INFO] [stderr]   |         ^^^^^^ help: convert the identifier to snake case: `matrix`
[INFO] [stderr] 
[INFO] [stderr] warning: function `LU_cal` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:181:8
[INFO] [stderr]     |
[INFO] [stderr] 181 | pub fn LU_cal(i: usize,N: usize,mut temp_l: Matrix,mut temp_u: Matrix,mut lu: Matrix,matA: &Matrix) -> (Matrix,Matrix) {
[INFO] [stderr]     |        ^^^^^^ help: convert the identifier to snake case: `lu_cal`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:181:24
[INFO] [stderr]     |
[INFO] [stderr] 181 | pub fn LU_cal(i: usize,N: usize,mut temp_l: Matrix,mut temp_u: Matrix,mut lu: Matrix,matA: &Matrix) -> (Matrix,Matrix) {
[INFO] [stderr]     |                        ^ help: convert the identifier to snake case: `n`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `matA` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:181:86
[INFO] [stderr]     |
[INFO] [stderr] 181 | pub fn LU_cal(i: usize,N: usize,mut temp_l: Matrix,mut temp_u: Matrix,mut lu: Matrix,matA: &Matrix) -> (Matrix,Matrix) {
[INFO] [stderr]     |                                                                                      ^^^^ help: convert the identifier to snake case: `mat_a`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `A1` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:204:13
[INFO] [stderr]     |
[INFO] [stderr] 204 |     let mut A1 = zero(n,n);
[INFO] [stderr]     |             ^^ help: convert the identifier to snake case: `a1`
[INFO] [stderr] 
[INFO] [stderr] warning: function `LU` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:218:8
[INFO] [stderr]     |
[INFO] [stderr] 218 | pub fn LU(a: &Matrix) -> (Result<Matrix,String>,Result<Matrix,String>) {
[INFO] [stderr]     |        ^^ help: convert the identifier to snake case: `lu`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `N` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:219:9
[INFO] [stderr]     |
[INFO] [stderr] 219 |     let N = a.col;
[INFO] [stderr]     |         ^ help: convert the identifier to snake case: `n`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `L` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:224:10
[INFO] [stderr]     |
[INFO] [stderr] 224 |     let (L,U) = LU_cal(0,N,temp_l,temp_u,lu,a);
[INFO] [stderr]     |          ^ help: convert the identifier to snake case: `l`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `U` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:224:12
[INFO] [stderr]     |
[INFO] [stderr] 224 |     let (L,U) = LU_cal(0,N,temp_l,temp_u,lu,a);
[INFO] [stderr]     |            ^ help: convert the identifier to snake case (notice the capitalization): `u`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Det` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:258:9
[INFO] [stderr]     |
[INFO] [stderr] 258 |     let Det:Result<f64,String> = match is_tri(&a) {
[INFO] [stderr]     |         ^^^ help: convert the identifier to snake case: `det`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `inv_A` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:276:13
[INFO] [stderr]     |
[INFO] [stderr] 276 |     let mut inv_A = iden(n);
[INFO] [stderr]     |             ^^^^^ help: convert the identifier to snake case: `inv_a`
[INFO] [stderr] 
[INFO] [stderr] warning: function `LU_works` should have a snake case name
[INFO] [stderr]    --> src/Matrix.rs:667:12
[INFO] [stderr]     |
[INFO] [stderr] 667 |     pub fn LU_works() {
[INFO] [stderr]     |            ^^^^^^^^ help: convert the identifier to snake case: `lu_works`
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "13c46402eb9b6fab78f5f008cdd1a84ac043ae92d59bb07db9093f77daa87f6d"`
[INFO] running `"docker" "rm" "-f" "13c46402eb9b6fab78f5f008cdd1a84ac043ae92d59bb07db9093f77daa87f6d"`
[INFO] [stdout] 13c46402eb9b6fab78f5f008cdd1a84ac043ae92d59bb07db9093f77daa87f6d