[INFO] updating cached repository joelpedraza/aoc2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/joelpedraza/aoc2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/joelpedraza/aoc2018" "work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/joelpedraza/aoc2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/joelpedraza/aoc2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/joelpedraza/aoc2018" "work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/joelpedraza/aoc2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/joelpedraza/aoc2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 04328d125792606a9ce43cd67b17379a839b77a1
[INFO] sha for GitHub repo joelpedraza/aoc2018: 04328d125792606a9ce43cd67b17379a839b77a1
[INFO] validating manifest of joelpedraza/aoc2018 on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of joelpedraza/aoc2018 on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing joelpedraza/aoc2018
[INFO] finished frobbing joelpedraza/aoc2018
[INFO] frobbed toml for joelpedraza/aoc2018 written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/joelpedraza/aoc2018/Cargo.toml
[INFO] started frobbing joelpedraza/aoc2018
[INFO] finished frobbing joelpedraza/aoc2018
[INFO] frobbed toml for joelpedraza/aoc2018 written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/gh/joelpedraza/aoc2018/Cargo.toml
[INFO] crate joelpedraza/aoc2018 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking joelpedraza/aoc2018 against master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7 for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-6/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/gh/joelpedraza/aoc2018:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 789b597301cca3acaa247ecbef6f1219bcf9c9dfee563e7f29edafa4a1ba087b
[INFO] running `"docker" "start" "-a" "789b597301cca3acaa247ecbef6f1219bcf9c9dfee563e7f29edafa4a1ba087b"`
[INFO] [stderr]     Checking aoc2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::iter::once`
[INFO] [stderr]   --> src/problem01/solution.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     use std::iter::once;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::once`
[INFO] [stderr]   --> src/problem01/solution.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     use std::iter::once;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/trie.rs:264:19
[INFO] [stderr]     |
[INFO] [stderr] 264 |             .map(|mut 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: private type `bitvec::BitVec32Iter` in public interface (error E0446)
[INFO] [stderr]   --> src/bitvec.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | /     pub fn iter(&self) -> BitVec32Iter {
[INFO] [stderr] 35 | |         BitVec32Iter(self.clone())
[INFO] [stderr] 36 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(private_in_public)] on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: associated const is never used: `NO_SET_BITS`
[INFO] [stderr]  --> src/bitvec.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub const NO_SET_BITS: usize = 32;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated const is never used: `ALL`
[INFO] [stderr]  --> src/bitvec.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     pub const ALL: BitVec32 = BitVec32(u32::max_value());
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/bitvec.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `iter`
[INFO] [stderr]   --> src/bitvec.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn iter(&self) -> BitVec32Iter {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `last`
[INFO] [stderr]   --> src/bitvec.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn last(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `BitVec32Iter`
[INFO] [stderr]   --> src/bitvec.rs:63:1
[INFO] [stderr]    |
[INFO] [stderr] 63 | struct BitVec32Iter(BitVec32);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `len`
[INFO] [stderr]   --> src/trie.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `insert`
[INFO] [stderr]   --> src/trie.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn insert(&mut self, s: &str) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `contains`
[INFO] [stderr]   --> src/trie.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn contains(&mut self, s: &str) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `find_boxes_with_single_transpose_bruteforce`
[INFO] [stderr]   --> src/problem02/solution.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub fn find_boxes_with_single_transpose_bruteforce(input: &str) -> String {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `has_single_transpose`
[INFO] [stderr]   --> src/problem02/solution.rs:97:1
[INFO] [stderr]    |
[INFO] [stderr] 97 | fn has_single_transpose(word1: &str, word2: &str) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/problem06/solution.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 |     fn new(x: u16, y: u16) -> Point {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/problem06/solution.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 |     fn new() -> Rect {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_point`
[INFO] [stderr]    --> src/problem06/solution.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 |     fn from_point(point: &Point) -> Rect {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/trie.rs:264:19
[INFO] [stderr]     |
[INFO] [stderr] 264 |             .map(|mut 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: private type `bitvec::BitVec32Iter` in public interface (error E0446)
[INFO] [stderr]   --> src/bitvec.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 | /     pub fn iter(&self) -> BitVec32Iter {
[INFO] [stderr] 35 | |         BitVec32Iter(self.clone())
[INFO] [stderr] 36 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(private_in_public)] on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: associated const is never used: `NO_SET_BITS`
[INFO] [stderr]  --> src/bitvec.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub const NO_SET_BITS: usize = 32;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `last`
[INFO] [stderr]   --> src/bitvec.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub fn last(&self) -> usize {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/problem06/solution.rs:100:5
[INFO] [stderr]     |
[INFO] [stderr] 100 |     fn new(x: u16, y: u16) -> Point {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/problem06/solution.rs:123:5
[INFO] [stderr]     |
[INFO] [stderr] 123 |     fn new() -> Rect {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_point`
[INFO] [stderr]    --> src/problem06/solution.rs:140:5
[INFO] [stderr]     |
[INFO] [stderr] 140 |     fn from_point(point: &Point) -> Rect {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
[INFO] running `"docker" "inspect" "789b597301cca3acaa247ecbef6f1219bcf9c9dfee563e7f29edafa4a1ba087b"`
[INFO] running `"docker" "rm" "-f" "789b597301cca3acaa247ecbef6f1219bcf9c9dfee563e7f29edafa4a1ba087b"`
[INFO] [stdout] 789b597301cca3acaa247ecbef6f1219bcf9c9dfee563e7f29edafa4a1ba087b