[INFO] cloning repository https://github.com/joemspalding/advent-of-code-2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/joemspalding/advent-of-code-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoemspalding%2Fadvent-of-code-2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoemspalding%2Fadvent-of-code-2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a129243219230858ecf45ea7080f5c1a75b337ba
[INFO] testing joemspalding/advent-of-code-2020 against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjoemspalding%2Fadvent-of-code-2020" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/joemspalding/advent-of-code-2020 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/joemspalding/advent-of-code-2020
[INFO] finished tweaking git repo https://github.com/joemspalding/advent-of-code-2020
[INFO] tweaked toml for git repo https://github.com/joemspalding/advent-of-code-2020 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/joemspalding/advent-of-code-2020 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e013388865f24823925c987c10377381c039266a97cfa7141c850242cc92847c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e013388865f24823925c987c10377381c039266a97cfa7141c850242cc92847c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e013388865f24823925c987c10377381c039266a97cfa7141c850242cc92847c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e013388865f24823925c987c10377381c039266a97cfa7141c850242cc92847c", kill_on_drop: false }`
[INFO] [stdout] e013388865f24823925c987c10377381c039266a97cfa7141c850242cc92847c
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0769bd8a7e53781550842d6f323c9992074e6885fbbcf831f042a3195a8d1ba9
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0769bd8a7e53781550842d6f323c9992074e6885fbbcf831f042a3195a8d1ba9", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling regex-syntax v0.6.21
[INFO] [stderr]    Compiling string-builder v0.2.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling itertools v0.9.0
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling regex v1.4.2
[INFO] [stderr]    Compiling advent-of-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `acc` should have an upper camel case name
[INFO] [stdout]  --> src/calendar/day_eight.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     acc(i32),
[INFO] [stdout]   |     ^^^ help: convert the identifier to upper camel case: `Acc`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `jmp` should have an upper camel case name
[INFO] [stdout]  --> src/calendar/day_eight.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     jmp(i32),
[INFO] [stdout]   |     ^^^ help: convert the identifier to upper camel case: `Jmp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `nop` should have an upper camel case name
[INFO] [stdout]   --> src/calendar/day_eight.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     nop(i32)
[INFO] [stdout]    |     ^^^ help: convert the identifier to upper camel case: `Nop`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `itertools::Itertools::fold_while`: Use .try_fold() instead
[INFO] [stdout]   --> src/calendar/day_nine.rs:82:10
[INFO] [stdout]    |
[INFO] [stdout] 82 |         .fold_while(Some(0), |acc, current: (usize, &usize)| {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `found`
[INFO] [stdout]   --> src/calendar/day_six.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let mut found: bool = false;
[INFO] [stdout]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `found`
[INFO] [stdout]   --> src/calendar/day_six.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let mut found: bool = false;
[INFO] [stdout]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/calendar/day_eight.rs:120:42
[INFO] [stdout]     |
[INFO] [stdout] 120 |                         Instruction::jmp(v) => {
[INFO] [stdout]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/calendar/day_eight.rs:123:42
[INFO] [stdout]     |
[INFO] [stdout] 123 |                         Instruction::nop(v) => {
[INFO] [stdout]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/calendar/day_six.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let mut found: bool = false;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/calendar/day_six.rs:37:25
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 match acc.get(&answer.0) {
[INFO] [stdout]    |                       --- immutable borrow occurs here
[INFO] [stdout] 36 |                     Some(n) => {
[INFO] [stdout] 37 |                         acc.insert(answer.0, n + answer.1);
[INFO] [stdout]    |                         ^^^                  - immutable borrow later used here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/calendar/day_six.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let mut found: bool = false;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/calendar/day_six.rs:80:25
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 match acc.get(&answer.0) {
[INFO] [stdout]    |                       --- immutable borrow occurs here
[INFO] [stdout] 79 |                     Some(n) => {
[INFO] [stdout] 80 |                         acc.insert(answer.0, n + answer.1);
[INFO] [stdout]    |                         ^^^                  - immutable borrow later used here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/calendar/day_nine.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let mut list: Vec<usize> = XMAS_CYPHER.lines()
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.08s
[INFO] running `Command { std: "docker" "inspect" "0769bd8a7e53781550842d6f323c9992074e6885fbbcf831f042a3195a8d1ba9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0769bd8a7e53781550842d6f323c9992074e6885fbbcf831f042a3195a8d1ba9", kill_on_drop: false }`
[INFO] [stdout] 0769bd8a7e53781550842d6f323c9992074e6885fbbcf831f042a3195a8d1ba9
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 130f65c7e8cc87c8dc06acf2b21675434f1fe95f233d70d8a2d07183083ece8f
[INFO] running `Command { std: "docker" "start" "-a" "130f65c7e8cc87c8dc06acf2b21675434f1fe95f233d70d8a2d07183083ece8f", kill_on_drop: false }`
[INFO] [stdout] warning: variant `acc` should have an upper camel case name
[INFO] [stdout]  --> src/calendar/day_eight.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     acc(i32),
[INFO] [stdout]   |     ^^^ help: convert the identifier to upper camel case: `Acc`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `jmp` should have an upper camel case name
[INFO] [stdout]  --> src/calendar/day_eight.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     jmp(i32),
[INFO] [stdout]   |     ^^^ help: convert the identifier to upper camel case: `Jmp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `nop` should have an upper camel case name
[INFO] [stdout]   --> src/calendar/day_eight.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     nop(i32)
[INFO] [stdout]    |     ^^^ help: convert the identifier to upper camel case: `Nop`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `itertools::Itertools::fold_while`: Use .try_fold() instead
[INFO] [stdout]   --> src/calendar/day_nine.rs:82:10
[INFO] [stdout]    |
[INFO] [stdout] 82 |         .fold_while(Some(0), |acc, current: (usize, &usize)| {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `found`
[INFO] [stdout]   --> src/calendar/day_six.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let mut found: bool = false;
[INFO] [stdout]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `found`
[INFO] [stdout]   --> src/calendar/day_six.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let mut found: bool = false;
[INFO] [stdout]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/calendar/day_eight.rs:120:42
[INFO] [stdout]     |
[INFO] [stdout] 120 |                         Instruction::jmp(v) => {
[INFO] [stdout]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/calendar/day_eight.rs:123:42
[INFO] [stdout]     |
[INFO] [stdout] 123 |                         Instruction::nop(v) => {
[INFO] [stdout]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/calendar/day_six.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let mut found: bool = false;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling advent-of-code v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/calendar/day_six.rs:37:25
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 match acc.get(&answer.0) {
[INFO] [stdout]    |                       --- immutable borrow occurs here
[INFO] [stdout] 36 |                     Some(n) => {
[INFO] [stdout] 37 |                         acc.insert(answer.0, n + answer.1);
[INFO] [stdout]    |                         ^^^                  - immutable borrow later used here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/calendar/day_six.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let mut found: bool = false;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/calendar/day_six.rs:80:25
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 match acc.get(&answer.0) {
[INFO] [stdout]    |                       --- immutable borrow occurs here
[INFO] [stdout] 79 |                     Some(n) => {
[INFO] [stdout] 80 |                         acc.insert(answer.0, n + answer.1);
[INFO] [stdout]    |                         ^^^                  - immutable borrow later used here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/calendar/day_nine.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let mut list: Vec<usize> = XMAS_CYPHER.lines()
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `acc` should have an upper camel case name
[INFO] [stdout]  --> src/calendar/day_eight.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     acc(i32),
[INFO] [stdout]   |     ^^^ help: convert the identifier to upper camel case: `Acc`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `jmp` should have an upper camel case name
[INFO] [stdout]  --> src/calendar/day_eight.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     jmp(i32),
[INFO] [stdout]   |     ^^^ help: convert the identifier to upper camel case: `Jmp`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `nop` should have an upper camel case name
[INFO] [stdout]   --> src/calendar/day_eight.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     nop(i32)
[INFO] [stdout]    |     ^^^ help: convert the identifier to upper camel case: `Nop`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `itertools::Itertools::fold_while`: Use .try_fold() instead
[INFO] [stdout]   --> src/calendar/day_nine.rs:82:10
[INFO] [stdout]    |
[INFO] [stdout] 82 |         .fold_while(Some(0), |acc, current: (usize, &usize)| {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `found`
[INFO] [stdout]   --> src/calendar/day_six.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let mut found: bool = false;
[INFO] [stdout]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `found`
[INFO] [stdout]   --> src/calendar/day_six.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let mut found: bool = false;
[INFO] [stdout]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/calendar/day_eight.rs:120:42
[INFO] [stdout]     |
[INFO] [stdout] 120 |                         Instruction::jmp(v) => {
[INFO] [stdout]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/calendar/day_eight.rs:123:42
[INFO] [stdout]     |
[INFO] [stdout] 123 |                         Instruction::nop(v) => {
[INFO] [stdout]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/calendar/day_six.rs:16:17
[INFO] [stdout]    |
[INFO] [stdout] 16 |             let mut found: bool = false;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/calendar/day_six.rs:37:25
[INFO] [stdout]    |
[INFO] [stdout] 35 |                 match acc.get(&answer.0) {
[INFO] [stdout]    |                       --- immutable borrow occurs here
[INFO] [stdout] 36 |                     Some(n) => {
[INFO] [stdout] 37 |                         acc.insert(answer.0, n + answer.1);
[INFO] [stdout]    |                         ^^^                  - immutable borrow later used here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/calendar/day_six.rs:59:17
[INFO] [stdout]    |
[INFO] [stdout] 59 |             let mut found: bool = false;
[INFO] [stdout]    |                 ----^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stdout]   --> src/calendar/day_six.rs:80:25
[INFO] [stdout]    |
[INFO] [stdout] 78 |                 match acc.get(&answer.0) {
[INFO] [stdout]    |                       --- immutable borrow occurs here
[INFO] [stdout] 79 |                     Some(n) => {
[INFO] [stdout] 80 |                         acc.insert(answer.0, n + answer.1);
[INFO] [stdout]    |                         ^^^                  - immutable borrow later used here
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         mutable borrow occurs here
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]    = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/calendar/day_nine.rs:74:9
[INFO] [stdout]    |
[INFO] [stdout] 74 |     let mut list: Vec<usize> = XMAS_CYPHER.lines()
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "130f65c7e8cc87c8dc06acf2b21675434f1fe95f233d70d8a2d07183083ece8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "130f65c7e8cc87c8dc06acf2b21675434f1fe95f233d70d8a2d07183083ece8f", kill_on_drop: false }`
[INFO] [stdout] 130f65c7e8cc87c8dc06acf2b21675434f1fe95f233d70d8a2d07183083ece8f
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 891b1912c5f0297258e708e6ed183aee65d91aebd36c0ac3d972bae8bb5ffd82
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "891b1912c5f0297258e708e6ed183aee65d91aebd36c0ac3d972bae8bb5ffd82", kill_on_drop: false }`
[INFO] [stderr] warning: variant `acc` should have an upper camel case name
[INFO] [stderr]  --> src/calendar/day_eight.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     acc(i32),
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `Acc`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `jmp` should have an upper camel case name
[INFO] [stderr]  --> src/calendar/day_eight.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     jmp(i32),
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `Jmp`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `nop` should have an upper camel case name
[INFO] [stderr]   --> src/calendar/day_eight.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     nop(i32)
[INFO] [stderr]    |     ^^^ help: convert the identifier to upper camel case: `Nop`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `itertools::Itertools::fold_while`: Use .try_fold() instead
[INFO] [stderr]   --> src/calendar/day_nine.rs:82:10
[INFO] [stderr]    |
[INFO] [stderr] 82 |         .fold_while(Some(0), |acc, current: (usize, &usize)| {
[INFO] [stderr]    |          ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `found`
[INFO] [stderr]   --> src/calendar/day_six.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |             let mut found: bool = false;
[INFO] [stderr]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `found`
[INFO] [stderr]   --> src/calendar/day_six.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |             let mut found: bool = false;
[INFO] [stderr]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]    --> src/calendar/day_eight.rs:120:42
[INFO] [stderr]     |
[INFO] [stderr] 120 |                         Instruction::jmp(v) => {
[INFO] [stderr]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]    --> src/calendar/day_eight.rs:123:42
[INFO] [stderr]     |
[INFO] [stderr] 123 |                         Instruction::nop(v) => {
[INFO] [stderr]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/calendar/day_six.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |             let mut found: bool = 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: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/calendar/day_six.rs:37:25
[INFO] [stderr]    |
[INFO] [stderr] 35 |                 match acc.get(&answer.0) {
[INFO] [stderr]    |                       --- immutable borrow occurs here
[INFO] [stderr] 36 |                     Some(n) => {
[INFO] [stderr] 37 |                         acc.insert(answer.0, n + answer.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/calendar/day_six.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |             let mut found: bool = false;
[INFO] [stderr]    |                 ----^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/calendar/day_six.rs:80:25
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 match acc.get(&answer.0) {
[INFO] [stderr]    |                       --- immutable borrow occurs here
[INFO] [stderr] 79 |                     Some(n) => {
[INFO] [stderr] 80 |                         acc.insert(answer.0, n + answer.1);
[INFO] [stderr]    |                         ^^^                  - immutable borrow later used here
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         mutable borrow occurs here
[INFO] [stderr]    |
[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/calendar/day_nine.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let mut list: Vec<usize> = XMAS_CYPHER.lines()
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variant `acc` should have an upper camel case name
[INFO] [stderr]  --> src/calendar/day_eight.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     acc(i32),
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `Acc`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `jmp` should have an upper camel case name
[INFO] [stderr]  --> src/calendar/day_eight.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     jmp(i32),
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `Jmp`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `nop` should have an upper camel case name
[INFO] [stderr]   --> src/calendar/day_eight.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     nop(i32)
[INFO] [stderr]    |     ^^^ help: convert the identifier to upper camel case: `Nop`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `itertools::Itertools::fold_while`: Use .try_fold() instead
[INFO] [stderr]   --> src/calendar/day_nine.rs:82:10
[INFO] [stderr]    |
[INFO] [stderr] 82 |         .fold_while(Some(0), |acc, current: (usize, &usize)| {
[INFO] [stderr]    |          ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `found`
[INFO] [stderr]   --> src/calendar/day_six.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |             let mut found: bool = false;
[INFO] [stderr]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `found`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/calendar/day_six.rs:59:17
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr] 59 |             let mut found: bool = false;
[INFO] [stdout] 
[INFO] [stderr]    |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_found`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]    --> src/calendar/day_eight.rs:120:42
[INFO] [stderr]     |
[INFO] [stderr] 120 |                         Instruction::jmp(v) => {
[INFO] [stderr]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]    --> src/calendar/day_eight.rs:123:42
[INFO] [stderr]     |
[INFO] [stderr] 123 |                         Instruction::nop(v) => {
[INFO] [stderr]     |                                          ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/calendar/day_six.rs:16:17
[INFO] [stderr]    |
[INFO] [stderr] 16 |             let mut found: bool = 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: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/calendar/day_six.rs:37:25
[INFO] [stderr]    |
[INFO] [stderr] 35 |                 match acc.get(&answer.0) {
[INFO] [stderr]    |                       --- immutable borrow occurs here
[INFO] [stderr] 36 |                     Some(n) => {
[INFO] [stderr] 37 |                         acc.insert(answer.0, n + answer.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/calendar/day_six.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |             let mut found: bool = false;
[INFO] [stderr]    |                 ----^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `acc` as mutable because it is also borrowed as immutable
[INFO] [stderr]   --> src/calendar/day_six.rs:80:25
[INFO] [stderr]    |
[INFO] [stderr] 78 |                 match acc.get(&answer.0) {
[INFO] [stderr]    |                       --- immutable borrow occurs here
[INFO] [stderr] 79 |                     Some(n) => {
[INFO] [stderr] 80 |                         acc.insert(answer.0, n + answer.1);
[INFO] [stderr]    |                         ^^^                  - immutable borrow later used here
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         mutable borrow occurs here
[INFO] [stderr]    |
[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/calendar/day_nine.rs:74:9
[INFO] [stderr]    |
[INFO] [stderr] 74 |     let mut list: Vec<usize> = XMAS_CYPHER.lines()
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/advent_of_code-b1ee38d9695f4a6e
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/advent_of_code-3d42a280ecbea8f3
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests advent-of-code
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] warning: variant `acc` should have an upper camel case name
[INFO] [stderr]  --> /opt/rustwide/workdir/src/calendar/day_eight.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     acc(i32),
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `Acc`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `jmp` should have an upper camel case name
[INFO] [stderr]  --> /opt/rustwide/workdir/src/calendar/day_eight.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     jmp(i32),
[INFO] [stderr]   |     ^^^ help: convert the identifier to upper camel case: `Jmp`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `nop` should have an upper camel case name
[INFO] [stderr]   --> /opt/rustwide/workdir/src/calendar/day_eight.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     nop(i32)
[INFO] [stderr]    |     ^^^ help: convert the identifier to upper camel case: `Nop`
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[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 `Command { std: "docker" "inspect" "891b1912c5f0297258e708e6ed183aee65d91aebd36c0ac3d972bae8bb5ffd82", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "891b1912c5f0297258e708e6ed183aee65d91aebd36c0ac3d972bae8bb5ffd82", kill_on_drop: false }`
[INFO] [stdout] 891b1912c5f0297258e708e6ed183aee65d91aebd36c0ac3d972bae8bb5ffd82