[INFO] cloning repository https://github.com/AndrewGaspar/aoc-2018-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AndrewGaspar/aoc-2018-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndrewGaspar%2Faoc-2018-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndrewGaspar%2Faoc-2018-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 23c54081c97bcfd4a1acec7569b9472c194bb21c
[INFO] checking AndrewGaspar/aoc-2018-rust against master#3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0 for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAndrewGaspar%2Faoc-2018-rust" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AndrewGaspar/aoc-2018-rust
[INFO] finished tweaking git repo https://github.com/AndrewGaspar/aoc-2018-rust
[INFO] tweaked toml for git repo https://github.com/AndrewGaspar/aoc-2018-rust written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AndrewGaspar/aoc-2018-rust on toolchain 3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AndrewGaspar/aoc-2018-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f10a2dcf6cb025dc01ee0225f0ed3d85e20a968402da3af815eb80dc7b376ff2
[INFO] running `Command { std: "docker" "start" "-a" "f10a2dcf6cb025dc01ee0225f0ed3d85e20a968402da3af815eb80dc7b376ff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f10a2dcf6cb025dc01ee0225f0ed3d85e20a968402da3af815eb80dc7b376ff2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f10a2dcf6cb025dc01ee0225f0ed3d85e20a968402da3af815eb80dc7b376ff2", kill_on_drop: false }`
[INFO] [stdout] f10a2dcf6cb025dc01ee0225f0ed3d85e20a968402da3af815eb80dc7b376ff2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+3129d37ef7075ee3cbaa3d6cbe1b5794f67192b0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a737dd640ac7b943742a5c8f87417b116f59190917b229da4d311f98399c961
[INFO] running `Command { std: "docker" "start" "-a" "3a737dd640ac7b943742a5c8f87417b116f59190917b229da4d311f98399c961", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]     Checking either v1.5.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking arrayvec v0.4.8
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling num-complex v0.2.1
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking itertools v0.7.11
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking day-8 v0.1.0 (/opt/rustwide/workdir/day-8)
[INFO] [stderr]     Checking day-5 v0.1.0 (/opt/rustwide/workdir/day-5)
[INFO] [stderr]     Checking id-checksum v0.1.0 (/opt/rustwide/workdir/day-2-puzzle-1)
[INFO] [stderr]     Checking frequency-repetition-finder v0.1.0 (/opt/rustwide/workdir/day-1-puzzle-2)
[INFO] [stderr]     Checking frequency-calculator v0.1.0 (/opt/rustwide/workdir/day-1-puzzle-1)
[INFO] [stderr]     Checking similarity-finder v0.1.0 (/opt/rustwide/workdir/day-2-puzzle-2)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-8/src/lib.rs:87:42
[INFO] [stdout]    |
[INFO] [stdout] 87 |     reader: std::io::Split<BufReader<Box<Read>>>,
[INFO] [stdout]    |                                          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 |     reader: std::io::Split<BufReader<Box<dyn Read>>>,
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-1-puzzle-2/src/main.rs:35:31
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-8/src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn from_reader(reader: BufReader<Box<Read>>) -> Self {
[INFO] [stdout]    |                                              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn from_reader(reader: BufReader<Box<dyn Read>>) -> Self {
[INFO] [stdout]    |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-8/src/lib.rs:91:38
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn new(reader: BufReader<Box<Read>>) -> Self {
[INFO] [stdout]    |                                      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn new(reader: BufReader<Box<dyn Read>>) -> Self {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-8/src/lib.rs:87:42
[INFO] [stdout]    |
[INFO] [stdout] 87 |     reader: std::io::Split<BufReader<Box<Read>>>,
[INFO] [stdout]    |                                          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 |     reader: std::io::Split<BufReader<Box<dyn Read>>>,
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-1-puzzle-1/src/main.rs:10:35
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-1-puzzle-2/src/main.rs:35:31
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-8/src/lib.rs:22:46
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn from_reader(reader: BufReader<Box<Read>>) -> Self {
[INFO] [stdout]    |                                              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn from_reader(reader: BufReader<Box<dyn Read>>) -> Self {
[INFO] [stdout]    |                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-8/src/lib.rs:91:38
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn new(reader: BufReader<Box<Read>>) -> Self {
[INFO] [stdout]    |                                      ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 91 |     pub fn new(reader: BufReader<Box<dyn Read>>) -> Self {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-2-puzzle-2/src/main.rs:31:31
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-2-puzzle-1/src/main.rs:39:35
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-2-puzzle-1/src/main.rs:39:35
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 39 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-1-puzzle-1/src/main.rs:10:35
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-5/src/bin/shortest-polymer.rs:11:35
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> day-5/src/bin/react.rs:9:35
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]   |                                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]   |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> day-5/src/bin/react.rs:9:35
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]   |                                   ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]   |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-2-puzzle-2/src/main.rs:31:31
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-8/src/bin/sum-metadata.rs:10:31
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-8/src/bin/node-value.rs:10:31
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-8/src/bin/sum-metadata.rs:10:31
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-8/src/bin/node-value.rs:10:31
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-5/src/bin/shortest-polymer.rs:11:35
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day-7 v0.1.0 (/opt/rustwide/workdir/day-7)
[INFO] [stderr]     Checking consistent-guard v0.1.0 (/opt/rustwide/workdir/day-4-puzzle-2)
[INFO] [stderr]     Checking sleepiest-guard v0.1.0 (/opt/rustwide/workdir/day-4-puzzle-1)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-4-puzzle-2/src/main.rs:87:35
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-4-puzzle-1/src/main.rs:87:35
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-4-puzzle-1/src/main.rs:87:35
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-4-puzzle-2/src/main.rs:87:35
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-7/src/bin/task-graph.rs:11:35
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-7/src/bin/parallel-work.rs:11:35
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-7/src/bin/task-graph.rs:11:35
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-7/src/bin/parallel-work.rs:11:35
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking ndarray-parallel v0.9.0
[INFO] [stderr]     Checking lonely-rectangle v0.1.0 (/opt/rustwide/workdir/day-3-puzzle-2)
[INFO] [stderr]     Checking intersections v0.1.0 (/opt/rustwide/workdir/day-3-puzzle-1)
[INFO] [stdout] warning: unused import: `ndarray::prelude::*`
[INFO] [stdout]  --> day-3-puzzle-2/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-3-puzzle-2/src/main.rs:92:35
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> day-3-puzzle-2/src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         unsafe { str::from_utf8(&line[0..end_index]) }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ndarray::prelude::*`
[INFO] [stdout]  --> day-3-puzzle-2/src/main.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use ndarray::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-3-puzzle-2/src/main.rs:92:35
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 92 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-3-puzzle-1/src/main.rs:83:35
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> day-3-puzzle-2/src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         unsafe { str::from_utf8(&line[0..end_index]) }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-3-puzzle-1/src/main.rs:83:35
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 83 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> day-3-puzzle-1/src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         unsafe { str::from_utf8(&line[0..end_index]) }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> day-3-puzzle-1/src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Claim {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 10 |     pub id: u32,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Claim` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]   --> day-3-puzzle-1/src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |         unsafe { str::from_utf8(&line[0..end_index]) }
[INFO] [stdout]    |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> day-3-puzzle-1/src/main.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Claim {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 10 |     pub id: u32,
[INFO] [stdout]    |         ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Claim` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking day-6 v0.1.0 (/opt/rustwide/workdir/day-6)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-6/src/bin/central-area.rs:12:35
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-6/src/bin/central-area.rs:12:35
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-6/src/bin/max-finite-area.rs:14:35
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> day-6/src/bin/max-finite-area.rs:14:35
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut reader: BufReader<Box<Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 14 |     let mut reader: BufReader<Box<dyn Read>> = match matches.value_of("input") {
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.67s
[INFO] running `Command { std: "docker" "inspect" "3a737dd640ac7b943742a5c8f87417b116f59190917b229da4d311f98399c961", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a737dd640ac7b943742a5c8f87417b116f59190917b229da4d311f98399c961", kill_on_drop: false }`
[INFO] [stdout] 3a737dd640ac7b943742a5c8f87417b116f59190917b229da4d311f98399c961
