[INFO] updating cached repository Ratismal/adventofcode2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Ratismal/adventofcode2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Ratismal/adventofcode2018" "work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/Ratismal/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/Ratismal/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Ratismal/adventofcode2018" "work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/Ratismal/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/Ratismal/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8ed412b3d04c39a2f6d7895d57fc2f1d9b39a759
[INFO] sha for GitHub repo Ratismal/adventofcode2018: 8ed412b3d04c39a2f6d7895d57fc2f1d9b39a759
[INFO] validating manifest of Ratismal/adventofcode2018 on toolchain master#2bde39b8edce6463e1c37f8a8082a875e7b536b1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Ratismal/adventofcode2018 on toolchain try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0d8b5d1f16bab9e975695518ff8705bdab9fe94c-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Ratismal/adventofcode2018
[INFO] finished frobbing Ratismal/adventofcode2018
[INFO] frobbed toml for Ratismal/adventofcode2018 written to work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/Ratismal/adventofcode2018/Cargo.toml
[INFO] started frobbing Ratismal/adventofcode2018
[INFO] finished frobbing Ratismal/adventofcode2018
[INFO] frobbed toml for Ratismal/adventofcode2018 written to work/ex/pr-57483/sources/try#0d8b5d1f16bab9e975695518ff8705bdab9fe94c/gh/Ratismal/adventofcode2018/Cargo.toml
[INFO] crate Ratismal/adventofcode2018 has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+0d8b5d1f16bab9e975695518ff8705bdab9fe94c-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking Ratismal/adventofcode2018 against master#2bde39b8edce6463e1c37f8a8082a875e7b536b1 for pr-57483
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57483/worker-4/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57483/sources/master#2bde39b8edce6463e1c37f8a8082a875e7b536b1/gh/Ratismal/adventofcode2018:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+2bde39b8edce6463e1c37f8a8082a875e7b536b1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f715572babca6a5378302c4520c7a0d9afd8b84c7c0da22a9c60837eaac06629
[INFO] running `"docker" "start" "-a" "f715572babca6a5378302c4520c7a0d9afd8b84c7c0da22a9c60837eaac06629"`
[INFO] [stderr]     Checking adventofcode2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/puzzles/d8.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/puzzles/d8.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> src/puzzles/d8.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut state: State = State::HEADER_CHILD;
[INFO] [stderr]    |             ^^^^^ help: consider using `_state` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `child_nodes`
[INFO] [stderr]   --> src/puzzles/d8.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut child_nodes: u32;
[INFO] [stderr]    |             ^^^^^^^^^^^ help: consider using `_child_nodes` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `meta_elements`
[INFO] [stderr]   --> src/puzzles/d8.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut meta_elements: u32;
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: consider using `_meta_elements` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/puzzles/d8.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     for i in elements {}
[INFO] [stderr]    |         ^ help: consider using `_i` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elements`
[INFO] [stderr]   --> src/puzzles/d8.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let elements = self.parse(&input);
[INFO] [stderr]    |         ^^^^^^^^ help: consider using `_elements` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `state`
[INFO] [stderr]   --> src/puzzles/d8.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut state: State = State::HEADER_CHILD;
[INFO] [stderr]    |             ^^^^^ help: consider using `_state` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `child_nodes`
[INFO] [stderr]   --> src/puzzles/d8.rs:26:13
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut child_nodes: u32;
[INFO] [stderr]    |             ^^^^^^^^^^^ help: consider using `_child_nodes` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `meta_elements`
[INFO] [stderr]   --> src/puzzles/d8.rs:27:13
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut meta_elements: u32;
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: consider using `_meta_elements` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]   --> src/puzzles/d8.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     for i in elements {}
[INFO] [stderr]    |         ^ help: consider using `_i` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elements`
[INFO] [stderr]   --> src/puzzles/d8.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     let elements = self.parse(&input);
[INFO] [stderr]    |         ^^^^^^^^ help: consider using `_elements` instead
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/puzzles/d8.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut state: State = State::HEADER_CHILD;
[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/puzzles/d8.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut child_nodes: u32;
[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/puzzles/d8.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut meta_elements: u32;
[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/puzzles/d8.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut state: State = State::HEADER_CHILD;
[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/puzzles/d8.rs:26:9
[INFO] [stderr]    |
[INFO] [stderr] 26 |     let mut child_nodes: u32;
[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/puzzles/d8.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut meta_elements: u32;
[INFO] [stderr]    |         ----^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]  --> src/puzzles/d8.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct Node {
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HEADER_META`
[INFO] [stderr]   --> src/puzzles/d8.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   HEADER_META,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `META`
[INFO] [stderr]   --> src/puzzles/d8.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 |   META,
[INFO] [stderr]    |   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `HEADER_CHILD` should have a camel case name such as `HeaderChild`
[INFO] [stderr]   --> src/puzzles/d8.rs:12:3
[INFO] [stderr]    |
[INFO] [stderr] 12 |   HEADER_CHILD,
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `HEADER_META` should have a camel case name such as `HeaderMeta`
[INFO] [stderr]   --> src/puzzles/d8.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   HEADER_META,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Node`
[INFO] [stderr]  --> src/puzzles/d8.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | struct Node {
[INFO] [stderr]   | ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `HEADER_META`
[INFO] [stderr]   --> src/puzzles/d8.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   HEADER_META,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `META`
[INFO] [stderr]   --> src/puzzles/d8.rs:14:3
[INFO] [stderr]    |
[INFO] [stderr] 14 |   META,
[INFO] [stderr]    |   ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `HEADER_CHILD` should have a camel case name such as `HeaderChild`
[INFO] [stderr]   --> src/puzzles/d8.rs:12:3
[INFO] [stderr]    |
[INFO] [stderr] 12 |   HEADER_CHILD,
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `HEADER_META` should have a camel case name such as `HeaderMeta`
[INFO] [stderr]   --> src/puzzles/d8.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   HEADER_META,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `"docker" "inspect" "f715572babca6a5378302c4520c7a0d9afd8b84c7c0da22a9c60837eaac06629"`
[INFO] running `"docker" "rm" "-f" "f715572babca6a5378302c4520c7a0d9afd8b84c7c0da22a9c60837eaac06629"`
[INFO] [stdout] f715572babca6a5378302c4520c7a0d9afd8b84c7c0da22a9c60837eaac06629