[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] [stderr] From https://github.com/a-yuto/vec
[INFO] [stderr]  * [new branch]      ax=b       -> ax=b
[INFO] [stderr]    9244902..cab9002  master     -> master
[INFO] [stderr]    cbf0d92..0dc38d9  rev        -> rev
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cab9002f2f5a978d0af927ab10ee3b29666c9b24
[INFO] checking a-yuto/vec against try#d27c6c6a469a28343396a8f3ac1c9d403aabda69 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fa-yuto%2Fvec" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/a-yuto/vec on toolchain d27c6c6a469a28343396a8f3ac1c9d403aabda69
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "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-1/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" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+d27c6c6a469a28343396a8f3ac1c9d403aabda69" "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] c06fa23109b0db64b9e3f58b24ed2de15553092310ff1a89cac23f78f44cb607
[INFO] running `"docker" "start" "-a" "c06fa23109b0db64b9e3f58b24ed2de15553092310ff1a89cac23f78f44cb607"`
[INFO] [stderr]     Checking nearly_eq v0.2.4
[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/vec_opp.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: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/matrix.rs:469:14
[INFO] [stderr]     |
[INFO] [stderr] 469 |     for i in (0.._l.row) {
[INFO] [stderr]     |              ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/matrix.rs:471:18
[INFO] [stderr]     |
[INFO] [stderr] 471 |         for j in (0..i) {
[INFO] [stderr]     |                  ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/matrix.rs:483:18
[INFO] [stderr]     |
[INFO] [stderr] 483 |         for j in (i+1.._u.row) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/matrix.rs:469:14
[INFO] [stderr]     |
[INFO] [stderr] 469 |     for i in (0.._l.row) {
[INFO] [stderr]     |              ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/matrix.rs:471:18
[INFO] [stderr]     |
[INFO] [stderr] 471 |         for j in (0..i) {
[INFO] [stderr]     |                  ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]    --> src/matrix.rs:483:18
[INFO] [stderr]     |
[INFO] [stderr] 483 |         for j in (i+1.._u.row) {
[INFO] [stderr]     |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_A` should have a snake case name
[INFO] [stderr]    --> src/matrix.rs:457:16
[INFO] [stderr]     |
[INFO] [stderr] 457 | pub fn line_eq(_A: &Matrix, _b: &Matrix) -> Matrix {
[INFO] [stderr]     |                ^^ help: convert the identifier to snake case: `_a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_A` should have a snake case name
[INFO] [stderr]    --> src/matrix.rs:457:16
[INFO] [stderr]     |
[INFO] [stderr] 457 | pub fn line_eq(_A: &Matrix, _b: &Matrix) -> Matrix {
[INFO] [stderr]     |                ^^ help: convert the identifier to snake case: `_a`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_A` should have a snake case name
[INFO] [stderr]    --> src/matrix.rs:504:13
[INFO] [stderr]     |
[INFO] [stderr] 504 |         let _A = Matrix {
[INFO] [stderr]     |             ^^ help: convert the identifier to snake case: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:16:14
[INFO] [stderr]    |
[INFO] [stderr] 16 |     for i in (0.._l.row) {
[INFO] [stderr]    |              ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:18:18
[INFO] [stderr]    |
[INFO] [stderr] 18 |         for j in (0..i) {
[INFO] [stderr]    |                  ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:30:18
[INFO] [stderr]    |
[INFO] [stderr] 30 |         for j in (i+1.._u.row) {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_A` should have a snake case name
[INFO] [stderr]  --> src/main.rs:4:16
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn line_eq(_A: &Matrix, _b: &Matrix) -> Matrix {
[INFO] [stderr]   |                ^^ help: convert the identifier to snake case: `_a`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:16:14
[INFO] [stderr]    |
[INFO] [stderr] 16 |     for i in (0.._l.row) {
[INFO] [stderr]    |              ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:18:18
[INFO] [stderr]    |
[INFO] [stderr] 18 |         for j in (0..i) {
[INFO] [stderr]    |                  ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `for` head expression
[INFO] [stderr]   --> src/main.rs:30:18
[INFO] [stderr]    |
[INFO] [stderr] 30 |         for j in (i+1.._u.row) {
[INFO] [stderr]    |                  ^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_A` should have a snake case name
[INFO] [stderr]   --> src/main.rs:39:9
[INFO] [stderr]    |
[INFO] [stderr] 39 |     let _A = Matrix {
[INFO] [stderr]    |         ^^ help: convert the identifier to snake case: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `_A` should have a snake case name
[INFO] [stderr]  --> src/main.rs:4:16
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn line_eq(_A: &Matrix, _b: &Matrix) -> Matrix {
[INFO] [stderr]   |                ^^ help: convert the identifier to snake case: `_a`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.65s
[INFO] running `"docker" "inspect" "c06fa23109b0db64b9e3f58b24ed2de15553092310ff1a89cac23f78f44cb607"`
[INFO] running `"docker" "rm" "-f" "c06fa23109b0db64b9e3f58b24ed2de15553092310ff1a89cac23f78f44cb607"`
[INFO] [stdout] c06fa23109b0db64b9e3f58b24ed2de15553092310ff1a89cac23f78f44cb607