[INFO] updating cached repository https://github.com/ForsakenHarmony/adventofcode_2017
[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] c6c5b678a20360fd8253108630fbbe0133811920
[INFO] checking ForsakenHarmony/adventofcode_2017 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FForsakenHarmony%2Fadventofcode_2017" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ForsakenHarmony/adventofcode_2017 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ForsakenHarmony/adventofcode_2017
[INFO] finished tweaking git repo https://github.com/ForsakenHarmony/adventofcode_2017
[INFO] tweaked toml for git repo https://github.com/ForsakenHarmony/adventofcode_2017 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/ForsakenHarmony/adventofcode_2017 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+45d050cde277b22a755847338f2acc2c7b834141" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 88c2fd3eef98e6ee7e7a13dd77169447bd8da17857ce2842a6ef6763de050f60
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "88c2fd3eef98e6ee7e7a13dd77169447bd8da17857ce2842a6ef6763de050f60"`
[INFO] [stderr]     Checking libc v0.2.34
[INFO] [stderr]    Compiling rayon-core v1.3.0
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking lazy_static v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.4.1
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking unreachable v1.0.0
[INFO] [stderr]     Checking thread_local v0.3.5
[INFO] [stderr]     Checking rand v0.3.18
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking num_cpus v1.7.0
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking regex v0.2.3
[INFO] [stderr]     Checking rayon v0.9.0
[INFO] [stderr]     Checking adventofcode_2017 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/day8_2.rs:43:9
[INFO] [stderr]    |
[INFO] [stderr] 43 |     let mut reg_v = map.entry(reg).or_insert(0);
[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: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `debug`
[INFO] [stderr]   --> examples/day21_2.rs:34:3
[INFO] [stderr]    |
[INFO] [stderr] 34 |   fn debug(data: &Vec<char>) -> String {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/day8.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |     let mut reg_v = map.entry(reg).or_insert(0);
[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] error[E0599]: no method named `rotate` found for mutable reference `&mut std::vec::Vec<char>` in the current scope
[INFO] [stderr]   --> examples/day16.rs:53:9
[INFO] [stderr]    |
[INFO] [stderr] 53 |   state.rotate(len - offset);
[INFO] [stderr]    |         ^^^^^^ method not found in `&mut std::vec::Vec<char>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> examples/day15_2.rs:46:7
[INFO] [stderr]    |
[INFO] [stderr] 46 |   for i in 0..5_000_000 {
[INFO] [stderr]    |       ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `adventofcode_2017`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused variable: `res`
[INFO] [stderr]   --> examples/day20.rs:14:7
[INFO] [stderr]    |
[INFO] [stderr] 14 |   let res = day(
[INFO] [stderr]    |       ^^^ help: if this is intentional, prefix it with an underscore: `_res`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/day7_2.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let mut node = Node {
[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: variable does not need to be mutable
[INFO] [stderr]   --> examples/day7_2.rs:49:11
[INFO] [stderr]    |
[INFO] [stderr] 49 |       let mut c_iter = children
[INFO] [stderr]    |           ----^^^^^^
[INFO] [stderr]    |           |
[INFO] [stderr]    |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "88c2fd3eef98e6ee7e7a13dd77169447bd8da17857ce2842a6ef6763de050f60"`
[INFO] running `"docker" "rm" "-f" "88c2fd3eef98e6ee7e7a13dd77169447bd8da17857ce2842a6ef6763de050f60"`
[INFO] [stdout] 88c2fd3eef98e6ee7e7a13dd77169447bd8da17857ce2842a6ef6763de050f60