[INFO] updating cached repository https://github.com/frafra/brutegol
[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] a91dd151d1bcf4f0aff05d26506e32b6fd1879a5
[INFO] checking frafra/brutegol against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffrafra%2Fbrutegol" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/frafra/brutegol on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/frafra/brutegol
[INFO] finished tweaking git repo https://github.com/frafra/brutegol
[INFO] tweaked toml for git repo https://github.com/frafra/brutegol written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/frafra/brutegol already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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] 68f3399db4c183a0bd9084877da4b324877dee960d342cfad6edbf66748b5a7f
[INFO] running `"docker" "start" "-a" "68f3399db4c183a0bd9084877da4b324877dee960d342cfad6edbf66748b5a7f"`
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking brutegol v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]   --> src/main.rs:96:22
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn mirror_horizontal(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]    |                      ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/main.rs:100:20
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn mirror_vertical(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                    ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rows`
[INFO] [stderr]    --> src/main.rs:100:32
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn mirror_vertical(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                                ^^^^ help: consider prefixing with an underscore: `_rows`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/main.rs:104:20
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn mirror_diagonal(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                    ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rows`
[INFO] [stderr]    --> src/main.rs:116:27
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn rotate_180(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                           ^^^^ help: consider prefixing with an underscore: `_rows`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `columns`
[INFO] [stderr]    --> src/main.rs:116:40
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn rotate_180(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                                        ^^^^^^^ help: consider prefixing with an underscore: `_columns`
[INFO] [stderr] 
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking quickcheck v0.6.2
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]   --> src/main.rs:96:22
[INFO] [stderr]    |
[INFO] [stderr] 96 | fn mirror_horizontal(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]    |                      ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/main.rs:100:20
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn mirror_vertical(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                    ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rows`
[INFO] [stderr]    --> src/main.rs:100:32
[INFO] [stderr]     |
[INFO] [stderr] 100 | fn mirror_vertical(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                                ^^^^ help: consider prefixing with an underscore: `_rows`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `len`
[INFO] [stderr]    --> src/main.rs:104:20
[INFO] [stderr]     |
[INFO] [stderr] 104 | fn mirror_diagonal(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                    ^^^ help: consider prefixing with an underscore: `_len`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rows`
[INFO] [stderr]    --> src/main.rs:116:27
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn rotate_180(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                           ^^^^ help: consider prefixing with an underscore: `_rows`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `columns`
[INFO] [stderr]    --> src/main.rs:116:40
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn rotate_180(len: usize, rows: usize, columns: usize, i: usize) -> usize {
[INFO] [stderr]     |                                        ^^^^^^^ help: consider prefixing with an underscore: `_columns`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.57s
[INFO] running `"docker" "inspect" "68f3399db4c183a0bd9084877da4b324877dee960d342cfad6edbf66748b5a7f"`
[INFO] running `"docker" "rm" "-f" "68f3399db4c183a0bd9084877da4b324877dee960d342cfad6edbf66748b5a7f"`
[INFO] [stdout] 68f3399db4c183a0bd9084877da4b324877dee960d342cfad6edbf66748b5a7f