[INFO] cloning repository https://github.com/djhworld/zipit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/djhworld/zipit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjhworld%2Fzipit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjhworld%2Fzipit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 52656bab98db2160e8d83c614ecf9690885b1a69
[INFO] checking djhworld/zipit against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdjhworld%2Fzipit" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/djhworld/zipit on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/djhworld/zipit
[INFO] finished tweaking git repo https://github.com/djhworld/zipit
[INFO] tweaked toml for git repo https://github.com/djhworld/zipit written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/djhworld/zipit already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", 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] ba3c77f4e65c0aa9cb1ab0e75a21b02879c07ba9d0a1dfa1a0b070c6f94d3de5
[INFO] running `Command { std: "docker" "start" "-a" "ba3c77f4e65c0aa9cb1ab0e75a21b02879c07ba9d0a1dfa1a0b070c6f94d3de5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ba3c77f4e65c0aa9cb1ab0e75a21b02879c07ba9d0a1dfa1a0b070c6f94d3de5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba3c77f4e65c0aa9cb1ab0e75a21b02879c07ba9d0a1dfa1a0b070c6f94d3de5", kill_on_drop: false }`
[INFO] [stdout] ba3c77f4e65c0aa9cb1ab0e75a21b02879c07ba9d0a1dfa1a0b070c6f94d3de5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b40f78634c0fd2c2c8564fdbece1bfda0cad50752a6273b967cde984078655c
[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" "1b40f78634c0fd2c2c8564fdbece1bfda0cad50752a6273b967cde984078655c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.25
[INFO] [stderr]    Compiling libc v0.2.47
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking serde_json v1.0.36
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]     Checking zipit v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/render.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |     writer: Box<Write>,
[INFO] [stdout]    |                 ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/render.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(writer: Box<Write>) -> JsonOuput {
[INFO] [stdout]    |                            ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/render.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |     writer: Box<Write>,
[INFO] [stdout]    |                 ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/render.rs:52:28
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn new(writer: Box<Write>) -> TabbedOutput {
[INFO] [stdout]    |                            ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/zipper/mod.rs:9:24
[INFO] [stdout]   |
[INFO] [stdout] 9 |         left_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 |         right_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:11:26
[INFO] [stdout]    |
[INFO] [stdout] 11 |         output: Box<&mut ZipOutput>,
[INFO] [stdout]    |                          ^^^^^^^^^ help: use `dyn`: `dyn ZipOutput`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:20:24
[INFO] [stdout]    |
[INFO] [stdout] 20 |         left_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |         right_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:22:26
[INFO] [stdout]    |
[INFO] [stdout] 22 |         output: Box<&mut ZipOutput>,
[INFO] [stdout]    |                          ^^^^^^^^^ help: use `dyn`: `dyn ZipOutput`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:39:24
[INFO] [stdout]    |
[INFO] [stdout] 39 |         left_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:40:25
[INFO] [stdout]    |
[INFO] [stdout] 40 |         right_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:41:26
[INFO] [stdout]    |
[INFO] [stdout] 41 |         output: Box<&mut ZipOutput>,
[INFO] [stdout]    |                          ^^^^^^^^^ help: use `dyn`: `dyn ZipOutput`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:34:65
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn open_file_as_line_reader(file: &str) -> Result<BufReader<Box<Read>>> {
[INFO] [stdout]    |                                                                 ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:37:60
[INFO] [stdout]    |
[INFO] [stdout] 37 |             let buffer = BufReader::new(Box::new(f) as Box<Read>);
[INFO] [stdout]    |                                                            ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:44:56
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn open_stdin_as_line_reader() -> Result<BufReader<Box<Read>>> {
[INFO] [stdout]    |                                                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:47:61
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let buffer = BufReader::new(Box::new(stdin_lock) as Box<Read>);
[INFO] [stdout]    |                                                             ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:59:37
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let reader_right: BufReader<Box<Read>> = match &opt.right_file {
[INFO] [stdout]    |                                     ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:68:28
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let renderer: Box<&mut ZipOutput> = match opt.json {
[INFO] [stdout]    |                            ^^^^^^^^^ help: use `dyn`: `dyn ZipOutput`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let zipper: Box<Zipper> = match opt.cycle {
[INFO] [stdout]    |                     ^^^^^^ help: use `dyn`: `dyn Zipper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/render.rs:14:17
[INFO] [stdout]    |
[INFO] [stdout] 14 |     writer: Box<Write>,
[INFO] [stdout]    |                 ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/render.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(writer: Box<Write>) -> JsonOuput {
[INFO] [stdout]    |                            ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/render.rs:48:17
[INFO] [stdout]    |
[INFO] [stdout] 48 |     writer: Box<Write>,
[INFO] [stdout]    |                 ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/render.rs:52:28
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub fn new(writer: Box<Write>) -> TabbedOutput {
[INFO] [stdout]    |                            ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/zipper/mod.rs:9:24
[INFO] [stdout]   |
[INFO] [stdout] 9 |         left_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]   |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:10:25
[INFO] [stdout]    |
[INFO] [stdout] 10 |         right_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:11:26
[INFO] [stdout]    |
[INFO] [stdout] 11 |         output: Box<&mut ZipOutput>,
[INFO] [stdout]    |                          ^^^^^^^^^ help: use `dyn`: `dyn ZipOutput`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:20:24
[INFO] [stdout]    |
[INFO] [stdout] 20 |         left_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |         right_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:22:26
[INFO] [stdout]    |
[INFO] [stdout] 22 |         output: Box<&mut ZipOutput>,
[INFO] [stdout]    |                          ^^^^^^^^^ help: use `dyn`: `dyn ZipOutput`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:39:24
[INFO] [stdout]    |
[INFO] [stdout] 39 |         left_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:40:25
[INFO] [stdout]    |
[INFO] [stdout] 40 |         right_iter: Box<Iterator<Item = Result<String>>>,
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = Result<String>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/zipper/mod.rs:41:26
[INFO] [stdout]    |
[INFO] [stdout] 41 |         output: Box<&mut ZipOutput>,
[INFO] [stdout]    |                          ^^^^^^^^^ help: use `dyn`: `dyn ZipOutput`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:34:65
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn open_file_as_line_reader(file: &str) -> Result<BufReader<Box<Read>>> {
[INFO] [stdout]    |                                                                 ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:37:60
[INFO] [stdout]    |
[INFO] [stdout] 37 |             let buffer = BufReader::new(Box::new(f) as Box<Read>);
[INFO] [stdout]    |                                                            ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:44:56
[INFO] [stdout]    |
[INFO] [stdout] 44 | fn open_stdin_as_line_reader() -> Result<BufReader<Box<Read>>> {
[INFO] [stdout]    |                                                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:47:61
[INFO] [stdout]    |
[INFO] [stdout] 47 |     let buffer = BufReader::new(Box::new(stdin_lock) as Box<Read>);
[INFO] [stdout]    |                                                             ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:59:37
[INFO] [stdout]    |
[INFO] [stdout] 59 |     let reader_right: BufReader<Box<Read>> = match &opt.right_file {
[INFO] [stdout]    |                                     ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:68:28
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let renderer: Box<&mut ZipOutput> = match opt.json {
[INFO] [stdout]    |                            ^^^^^^^^^ help: use `dyn`: `dyn ZipOutput`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let zipper: Box<Zipper> = match opt.cycle {
[INFO] [stdout]    |                     ^^^^^^ help: use `dyn`: `dyn Zipper`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 20 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.33s
[INFO] running `Command { std: "docker" "inspect" "1b40f78634c0fd2c2c8564fdbece1bfda0cad50752a6273b967cde984078655c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b40f78634c0fd2c2c8564fdbece1bfda0cad50752a6273b967cde984078655c", kill_on_drop: false }`
[INFO] [stdout] 1b40f78634c0fd2c2c8564fdbece1bfda0cad50752a6273b967cde984078655c