[INFO] updating cached repository https://github.com/schteve/advent2019_rust
[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] 0bf97ed093bb4711e93f7e38c58ee7c2581d2489
[INFO] checking schteve/advent2019_rust against master#0cbcb17d3306d6e22eafc2c05ce885db97d0189c for pr-68766
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fschteve%2Fadvent2019_rust" "/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/schteve/advent2019_rust on toolchain 0cbcb17d3306d6e22eafc2c05ce885db97d0189c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/schteve/advent2019_rust
[INFO] finished tweaking git repo https://github.com/schteve/advent2019_rust
[INFO] tweaked toml for git repo https://github.com/schteve/advent2019_rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/schteve/advent2019_rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "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" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "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] 344b6ec61917c3f60b48e3968e152139b2c1e24812b3caf9c1d4d346b063d9fb
[INFO] running `"docker" "start" "-a" "344b6ec61917c3f60b48e3968e152139b2c1e24812b3caf9c1d4d346b063d9fb"`
[INFO] [stderr]     Checking advent2019_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/day_17_part2.rs:654:17
[INFO] [stderr]     |
[INFO] [stderr] 654 |             for i in 0..self.program.output.len() {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/day_17_part2.rs:654:17
[INFO] [stderr]     |
[INFO] [stderr] 654 |             for i in 0..self.program.output.len() {
[INFO] [stderr]     |                 ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_string`
[INFO] [stderr]    --> src/day_17_part2.rs:356:5
[INFO] [stderr]     |
[INFO] [stderr] 356 |     fn to_string(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `opposite`
[INFO] [stderr]    --> src/day_17_part2.rs:376:5
[INFO] [stderr]     |
[INFO] [stderr] 376 |     fn opposite(&self) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `to_string`
[INFO] [stderr]    --> src/day_17_part2.rs:356:5
[INFO] [stderr]     |
[INFO] [stderr] 356 |     fn to_string(&self) -> String {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `opposite`
[INFO] [stderr]    --> src/day_17_part2.rs:376:5
[INFO] [stderr]     |
[INFO] [stderr] 376 |     fn opposite(&self) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `"docker" "inspect" "344b6ec61917c3f60b48e3968e152139b2c1e24812b3caf9c1d4d346b063d9fb"`
[INFO] running `"docker" "rm" "-f" "344b6ec61917c3f60b48e3968e152139b2c1e24812b3caf9c1d4d346b063d9fb"`
[INFO] [stdout] 344b6ec61917c3f60b48e3968e152139b2c1e24812b3caf9c1d4d346b063d9fb