[INFO] updating cached repository jscarrott/adventofcode2018
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jscarrott/adventofcode2018
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jscarrott/adventofcode2018" "work/ex/beta-1.38-1/sources/1.37.0/gh/jscarrott/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jscarrott/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jscarrott/adventofcode2018" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jscarrott/adventofcode2018"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jscarrott/adventofcode2018'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9dad36509886331d834104a6d1fc0b5622c431c4
[INFO] sha for GitHub repo jscarrott/adventofcode2018: 9dad36509886331d834104a6d1fc0b5622c431c4
[INFO] validating manifest of jscarrott/adventofcode2018 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jscarrott/adventofcode2018 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jscarrott/adventofcode2018
[INFO] finished frobbing jscarrott/adventofcode2018
[INFO] frobbed toml for jscarrott/adventofcode2018 written to work/ex/beta-1.38-1/sources/1.37.0/gh/jscarrott/adventofcode2018/Cargo.toml
[INFO] started frobbing jscarrott/adventofcode2018
[INFO] finished frobbing jscarrott/adventofcode2018
[INFO] frobbed toml for jscarrott/adventofcode2018 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jscarrott/adventofcode2018/Cargo.toml
[INFO] crate jscarrott/adventofcode2018 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing jscarrott/adventofcode2018 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jscarrott/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 0624c5346f939302d28704a105305015d2c712340e349d782aa7c66b991b660e
[INFO] running `"docker" "start" "-a" "0624c5346f939302d28704a105305015d2c712340e349d782aa7c66b991b660e"`
[INFO] [stderr]    Compiling AdventOfCode2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/day1.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/day2.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `returnVal`
[INFO] [stderr]  --> src/day2.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut returnVal = (false, false);
[INFO] [stderr]   |             ^^^^^^^^^ help: consider prefixing with an underscore: `_returnVal`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]   --> src/day2.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     for val in &count {
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `answer2`
[INFO] [stderr]    --> src/day2.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |     let answer2 = input.iter().fold((0i32, 0i32), |mut acc, x| {
[INFO] [stderr]     |         ^^^^^^^ help: consider prefixing with an underscore: `_answer2`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/day2.rs:14:30
[INFO] [stderr]    |
[INFO] [stderr] 13 |             match acc.get(x) {
[INFO] [stderr]    |                   --- immutable borrow occurs here
[INFO] [stderr] 14 |                 Some(val) => acc.insert(*x, val + 1),
[INFO] [stderr]    |                              ^^^            --- immutable borrow later used here
[INFO] [stderr]    |                              |
[INFO] [stderr]    |                              mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(mutable_borrow_reservation_conflict)] on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/day2.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut returnVal = (false, false);
[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: function is never used: `run`
[INFO] [stderr]  --> src/day1.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn run() {
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `AdventOfCode2018` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `advent_of_code2018`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `returnVal` should have a snake case name
[INFO] [stderr]  --> src/day2.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut returnVal = (false, false);
[INFO] [stderr]   |             ^^^^^^^^^ help: convert the identifier to snake case: `return_val`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.37s
[INFO] running `"docker" "inspect" "0624c5346f939302d28704a105305015d2c712340e349d782aa7c66b991b660e"`
[INFO] running `"docker" "rm" "-f" "0624c5346f939302d28704a105305015d2c712340e349d782aa7c66b991b660e"`
[INFO] [stdout] 0624c5346f939302d28704a105305015d2c712340e349d782aa7c66b991b660e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jscarrott/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 0d17cfcda4170b260833382b47e8fa47ef996a578fdb3d83139f2e30b4f14d1e
[INFO] running `"docker" "start" "-a" "0d17cfcda4170b260833382b47e8fa47ef996a578fdb3d83139f2e30b4f14d1e"`
[INFO] [stderr]    Compiling AdventOfCode2018 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/day1.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/day2.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `returnVal`
[INFO] [stderr]  --> src/day2.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut returnVal = (false, false);
[INFO] [stderr]   |             ^^^^^^^^^ help: consider prefixing with an underscore: `_returnVal`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]   --> src/day2.rs:19:9
[INFO] [stderr]    |
[INFO] [stderr] 19 |     for val in &count {
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `answer2`
[INFO] [stderr]    --> src/day2.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |     let answer2 = input.iter().fold((0i32, 0i32), |mut acc, x| {
[INFO] [stderr]     |         ^^^^^^^ help: consider prefixing with an underscore: `_answer2`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/day2.rs:14:30
[INFO] [stderr]    |
[INFO] [stderr] 13 |             match acc.get(x) {
[INFO] [stderr]    |                   --- immutable borrow occurs here
[INFO] [stderr] 14 |                 Some(val) => acc.insert(*x, val + 1),
[INFO] [stderr]    |                              ^^^            --- immutable borrow later used here
[INFO] [stderr]    |                              |
[INFO] [stderr]    |                              mutable borrow occurs here
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(mutable_borrow_reservation_conflict)] on by default
[INFO] [stderr]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/day2.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut returnVal = (false, false);
[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: function is never used: `run`
[INFO] [stderr]  --> src/day1.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn run() {
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `AdventOfCode2018` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `advent_of_code2018`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `returnVal` should have a snake case name
[INFO] [stderr]  --> src/day2.rs:6:13
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut returnVal = (false, false);
[INFO] [stderr]   |             ^^^^^^^^^ help: convert the identifier to snake case: `return_val`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `"docker" "inspect" "0d17cfcda4170b260833382b47e8fa47ef996a578fdb3d83139f2e30b4f14d1e"`
[INFO] running `"docker" "rm" "-f" "0d17cfcda4170b260833382b47e8fa47ef996a578fdb3d83139f2e30b4f14d1e"`
[INFO] [stdout] 0d17cfcda4170b260833382b47e8fa47ef996a578fdb3d83139f2e30b4f14d1e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jscarrott/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 9817c2525accd5bc08d57ed9d1b153f62909ec6ddccd694fe8dfa1dfcfeda218
[INFO] running `"docker" "start" "-a" "9817c2525accd5bc08d57ed9d1b153f62909ec6ddccd694fe8dfa1dfcfeda218"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/AdventOfCode2018-08a7c8e37286d0dc
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9817c2525accd5bc08d57ed9d1b153f62909ec6ddccd694fe8dfa1dfcfeda218"`
[INFO] running `"docker" "rm" "-f" "9817c2525accd5bc08d57ed9d1b153f62909ec6ddccd694fe8dfa1dfcfeda218"`
[INFO] [stdout] 9817c2525accd5bc08d57ed9d1b153f62909ec6ddccd694fe8dfa1dfcfeda218