[INFO] updating cached repository https://github.com/gobanos/adventofcode-2016
[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] 5d3f369f0921c25d0734cf710f9fcb8717c1b776
[INFO] checking gobanos/adventofcode-2016 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgobanos%2Fadventofcode-2016" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gobanos/adventofcode-2016 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/gobanos/adventofcode-2016
[INFO] finished tweaking git repo https://github.com/gobanos/adventofcode-2016
[INFO] tweaked toml for git repo https://github.com/gobanos/adventofcode-2016 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/gobanos/adventofcode-2016 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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3aaf60f89c07485a19d15fb9c7b8528a416871be4690c69df51eea6d5af59676
[INFO] running `"docker" "start" "-a" "3aaf60f89c07485a19d15fb9c7b8528a416871be4690c69df51eea6d5af59676"`
[INFO] [stderr]     Checking libc v0.2.18
[INFO] [stderr]    Compiling gcc v0.3.39
[INFO] [stderr]     Checking rustc-serialize v0.3.21
[INFO] [stderr]     Checking lazy_static v0.2.2
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking adventofcode-2016 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day4/problem1.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 | /     lazy_static! {
[INFO] [stderr] 51 | |         static ref RE: Regex = Regex::new(r"(?m)^([a-z-]+)-(\d+)\[([a-z]{5})\]$").unwrap();
[INFO] [stderr] 52 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day4/problem1.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 | /     lazy_static! {
[INFO] [stderr] 51 | |         static ref RE: Regex = Regex::new(r"(?m)^([a-z-]+)-(\d+)\[([a-z]{5})\]$").unwrap();
[INFO] [stderr] 52 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day4/problem2.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | /     lazy_static! {
[INFO] [stderr] 66 | |         static ref RE: Regex = Regex::new(r"(?m)^([a-z-]+)-(\d+)\[([a-z]{5})\]$").unwrap();
[INFO] [stderr] 67 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day4/problem2.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | /     lazy_static! {
[INFO] [stderr] 66 | |         static ref RE: Regex = Regex::new(r"(?m)^([a-z-]+)-(\d+)\[([a-z]{5})\]$").unwrap();
[INFO] [stderr] 67 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/day8/problem1.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 | /     lazy_static! {
[INFO] [stderr] 101 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 102 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 103 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/day8/problem1.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 | /     lazy_static! {
[INFO] [stderr] 101 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 102 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 103 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/day8/problem1.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 | /     lazy_static! {
[INFO] [stderr] 101 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 102 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 103 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/day8/problem1.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 | /     lazy_static! {
[INFO] [stderr] 101 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 102 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 103 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day8/problem2.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 | /     lazy_static! {
[INFO] [stderr] 95 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 96 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 97 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day8/problem2.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 | /     lazy_static! {
[INFO] [stderr] 95 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 96 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 97 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day8/problem2.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 | /     lazy_static! {
[INFO] [stderr] 95 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 96 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 97 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day8/problem2.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 | /     lazy_static! {
[INFO] [stderr] 95 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 96 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 97 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day4/problem1.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 | /     lazy_static! {
[INFO] [stderr] 51 | |         static ref RE: Regex = Regex::new(r"(?m)^([a-z-]+)-(\d+)\[([a-z]{5})\]$").unwrap();
[INFO] [stderr] 52 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day4/problem1.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 | /     lazy_static! {
[INFO] [stderr] 51 | |         static ref RE: Regex = Regex::new(r"(?m)^([a-z-]+)-(\d+)\[([a-z]{5})\]$").unwrap();
[INFO] [stderr] 52 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day4/problem2.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | /     lazy_static! {
[INFO] [stderr] 66 | |         static ref RE: Regex = Regex::new(r"(?m)^([a-z-]+)-(\d+)\[([a-z]{5})\]$").unwrap();
[INFO] [stderr] 67 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day4/problem2.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | /     lazy_static! {
[INFO] [stderr] 66 | |         static ref RE: Regex = Regex::new(r"(?m)^([a-z-]+)-(\d+)\[([a-z]{5})\]$").unwrap();
[INFO] [stderr] 67 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/day8/problem1.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 | /     lazy_static! {
[INFO] [stderr] 101 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 102 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 103 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/day8/problem1.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 | /     lazy_static! {
[INFO] [stderr] 101 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 102 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 103 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/day8/problem1.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 | /     lazy_static! {
[INFO] [stderr] 101 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 102 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 103 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]    --> src/day8/problem1.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 | /     lazy_static! {
[INFO] [stderr] 101 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 102 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 103 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day8/problem2.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 | /     lazy_static! {
[INFO] [stderr] 95 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 96 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 97 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day8/problem2.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 | /     lazy_static! {
[INFO] [stderr] 95 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 96 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 97 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day8/problem2.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 | /     lazy_static! {
[INFO] [stderr] 95 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 96 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 97 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::ONCE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/day8/problem2.rs:94:5
[INFO] [stderr]    |
[INFO] [stderr] 94 | /     lazy_static! {
[INFO] [stderr] 95 | |         static ref RE_RECT: Regex = Regex::new(r"^rect (\d+)x(\d+)$").unwrap();
[INFO] [stderr] 96 | |         static ref RE_ROTATE: Regex = Regex::new(r"^rotate (row|column) [xy]=(\d+) by (\d+)$").unwrap();
[INFO] [stderr] 97 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day3/problem2.rs:27:17
[INFO] [stderr]    |
[INFO] [stderr] 27 |         for (i, mut col) in cols.iter_mut().enumerate() {
[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]   --> src/day8/problem1.rs:16:21
[INFO] [stderr]    |
[INFO] [stderr] 16 |                 for mut row in self.pixels[0..dim.height].iter_mut() {
[INFO] [stderr]    |                     ----^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 81 | make_sized_screen!(Screen, width: 50, height: 6);
[INFO] [stderr]    | ------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day8/problem1.rs:17:25
[INFO] [stderr]    |
[INFO] [stderr] 17 |                     for mut pixel in row[0..dim.width].iter_mut() {
[INFO] [stderr]    |                         ----^^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 81 | make_sized_screen!(Screen, width: 50, height: 6);
[INFO] [stderr]    | ------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day8/problem2.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |         for mut row in self.pixels[0..dim.height].iter_mut() {
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day8/problem2.rs:20:17
[INFO] [stderr]    |
[INFO] [stderr] 20 |             for mut pixel in row[0..dim.width].iter_mut() {
[INFO] [stderr]    |                 ----^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `nb_pixel_on`
[INFO] [stderr]   --> src/day8/problem2.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn nb_pixel_on(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 18 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day3/problem2.rs:27:17
[INFO] [stderr]    |
[INFO] [stderr] 27 |         for (i, mut col) in cols.iter_mut().enumerate() {
[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]   --> src/day8/problem1.rs:16:21
[INFO] [stderr]    |
[INFO] [stderr] 16 |                 for mut row in self.pixels[0..dim.height].iter_mut() {
[INFO] [stderr]    |                     ----^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 81 | make_sized_screen!(Screen, width: 50, height: 6);
[INFO] [stderr]    | ------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day8/problem1.rs:17:25
[INFO] [stderr]    |
[INFO] [stderr] 17 |                     for mut pixel in row[0..dim.width].iter_mut() {
[INFO] [stderr]    |                         ----^^^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 81 | make_sized_screen!(Screen, width: 50, height: 6);
[INFO] [stderr]    | ------------------------------------------------- in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/day8/problem1.rs:16:21
[INFO] [stderr]     |
[INFO] [stderr] 16  |                 for mut row in self.pixels[0..dim.height].iter_mut() {
[INFO] [stderr]     |                     ----^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 163 |     make_sized_screen!(TestScreen, width: 7, height: 3);
[INFO] [stderr]     |     ---------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/day8/problem1.rs:17:25
[INFO] [stderr]     |
[INFO] [stderr] 17  |                     for mut pixel in row[0..dim.width].iter_mut() {
[INFO] [stderr]     |                         ----^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] ...
[INFO] [stderr] 163 |     make_sized_screen!(TestScreen, width: 7, height: 3);
[INFO] [stderr]     |     ---------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day8/problem2.rs:19:13
[INFO] [stderr]    |
[INFO] [stderr] 19 |         for mut row in self.pixels[0..dim.height].iter_mut() {
[INFO] [stderr]    |             ----^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/day8/problem2.rs:20:17
[INFO] [stderr]    |
[INFO] [stderr] 20 |             for mut pixel in row[0..dim.width].iter_mut() {
[INFO] [stderr]    |                 ----^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `nb_pixel_on`
[INFO] [stderr]    --> src/day8/problem1.rs:45:13
[INFO] [stderr]     |
[INFO] [stderr] 45  |             fn nb_pixel_on(&self) -> usize {
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 163 |     make_sized_screen!(TestScreen, width: 7, height: 3);
[INFO] [stderr]     |     ---------------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `nb_pixel_on`
[INFO] [stderr]   --> src/day8/problem2.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     fn nb_pixel_on(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.43s
[INFO] running `"docker" "inspect" "3aaf60f89c07485a19d15fb9c7b8528a416871be4690c69df51eea6d5af59676"`
[INFO] running `"docker" "rm" "-f" "3aaf60f89c07485a19d15fb9c7b8528a416871be4690c69df51eea6d5af59676"`
[INFO] [stdout] 3aaf60f89c07485a19d15fb9c7b8528a416871be4690c69df51eea6d5af59676