[INFO] cloning repository https://github.com/Widen/enctool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Widen/enctool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWiden%2Fenctool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWiden%2Fenctool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1af758fee4f969ff873235bf7561f9e36c7b94bd
[INFO] testing Widen/enctool against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWiden%2Fenctool" "/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/Widen/enctool on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Widen/enctool
[INFO] finished tweaking git repo https://github.com/Widen/enctool
[INFO] tweaked toml for git repo https://github.com/Widen/enctool written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded chardet v0.2.4
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3e1648bc831601b01d9ecb946466205b0b2e8c86373f86b35e32851079c9d1a
[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" "b3e1648bc831601b01d9ecb946466205b0b2e8c86373f86b35e32851079c9d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3e1648bc831601b01d9ecb946466205b0b2e8c86373f86b35e32851079c9d1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3e1648bc831601b01d9ecb946466205b0b2e8c86373f86b35e32851079c9d1a", kill_on_drop: false }`
[INFO] [stdout] b3e1648bc831601b01d9ecb946466205b0b2e8c86373f86b35e32851079c9d1a
[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=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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54d4e731846d3fe203ee14698a1b283ca1204deb55d3075a9080f143df98a2a5
[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" "54d4e731846d3fe203ee14698a1b283ca1204deb55d3075a9080f143df98a2a5", kill_on_drop: false }`
[INFO] [stderr]    Compiling encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling chardet v0.2.4
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-japanese v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-korean v1.20141219.5
[INFO] [stderr]    Compiling encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]    Compiling encoding v0.2.33
[INFO] [stderr]    Compiling enctool v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/convert.rs:6:29
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[INFO] [stdout]   |                             ^^^^ help: use `dyn`: `dyn Read`
[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/convert.rs:6:41
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[INFO] [stdout]   |                                         ^^^^^^^^ help: use `dyn`: `dyn Encoding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/convert.rs:6:64
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[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/convert.rs:6:78
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[INFO] [stdout]   |                                                                              ^^^^^^^^ help: use `dyn`: `dyn Encoding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/guess.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn guess(reader: &mut Read) -> Option<String> {
[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/validate.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn validate(reader: &mut Read, encoding: &Encoding) {
[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/validate.rs:6:47
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn validate(reader: &mut Read, encoding: &Encoding) {
[INFO] [stdout]   |                                               ^^^^^^^^ help: use `dyn`: `dyn Encoding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:51:24
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut input: Box<Read> = match matches.opt_str("input") {
[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:98:29
[INFO] [stdout]    |
[INFO] [stdout] 98 |         let mut output: Box<Write> = match matches.opt_str("output") {
[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/main.rs:111:31
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn check_utf8mb4(reader: &mut Read) {
[INFO] [stdout]     |                               ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.07s
[INFO] running `Command { std: "docker" "inspect" "54d4e731846d3fe203ee14698a1b283ca1204deb55d3075a9080f143df98a2a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54d4e731846d3fe203ee14698a1b283ca1204deb55d3075a9080f143df98a2a5", kill_on_drop: false }`
[INFO] [stdout] 54d4e731846d3fe203ee14698a1b283ca1204deb55d3075a9080f143df98a2a5
[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=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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60e87227a375ce3d5c5e8e71f65b5e522ea10fa169050ccfb12185b5c1b9ef2f
[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" "60e87227a375ce3d5c5e8e71f65b5e522ea10fa169050ccfb12185b5c1b9ef2f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling enctool v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/convert.rs:6:29
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[INFO] [stdout]   |                             ^^^^ help: use `dyn`: `dyn Read`
[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/convert.rs:6:41
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[INFO] [stdout]   |                                         ^^^^^^^^ help: use `dyn`: `dyn Encoding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/convert.rs:6:64
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[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/convert.rs:6:78
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[INFO] [stdout]   |                                                                              ^^^^^^^^ help: use `dyn`: `dyn Encoding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/guess.rs:6:27
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn guess(reader: &mut Read) -> Option<String> {
[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/validate.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn validate(reader: &mut Read, encoding: &Encoding) {
[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/validate.rs:6:47
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn validate(reader: &mut Read, encoding: &Encoding) {
[INFO] [stdout]   |                                               ^^^^^^^^ help: use `dyn`: `dyn Encoding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:51:24
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let mut input: Box<Read> = match matches.opt_str("input") {
[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:98:29
[INFO] [stdout]    |
[INFO] [stdout] 98 |         let mut output: Box<Write> = match matches.opt_str("output") {
[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/main.rs:111:31
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn check_utf8mb4(reader: &mut Read) {
[INFO] [stdout]     |                               ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.23s
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "60e87227a375ce3d5c5e8e71f65b5e522ea10fa169050ccfb12185b5c1b9ef2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60e87227a375ce3d5c5e8e71f65b5e522ea10fa169050ccfb12185b5c1b9ef2f", kill_on_drop: false }`
[INFO] [stdout] 60e87227a375ce3d5c5e8e71f65b5e522ea10fa169050ccfb12185b5c1b9ef2f
[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=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" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b3754a5314781185d92e584c34c36082a3d52e10cad08c944920b05ad973c7a5
[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" "b3754a5314781185d92e584c34c36082a3d52e10cad08c944920b05ad973c7a5", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/convert.rs:6:29
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[INFO] [stderr]   |                             ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/convert.rs:6:41
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[INFO] [stderr]   |                                         ^^^^^^^^ help: use `dyn`: `dyn Encoding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/convert.rs:6:64
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[INFO] [stderr]   |                                                                ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/convert.rs:6:78
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn convert(reader: &mut Read, src: &Encoding, writer: &mut Write, dest: &Encoding) {
[INFO] [stderr]   |                                                                              ^^^^^^^^ help: use `dyn`: `dyn Encoding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/guess.rs:6:27
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn guess(reader: &mut Read) -> Option<String> {
[INFO] [stderr]   |                           ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/validate.rs:6:30
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn validate(reader: &mut Read, encoding: &Encoding) {
[INFO] [stderr]   |                              ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/validate.rs:6:47
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn validate(reader: &mut Read, encoding: &Encoding) {
[INFO] [stderr]   |                                               ^^^^^^^^ help: use `dyn`: `dyn Encoding`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:51:24
[INFO] [stderr]    |
[INFO] [stderr] 51 |     let mut input: Box<Read> = match matches.opt_str("input") {
[INFO] [stderr]    |                        ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:98:29
[INFO] [stderr]    |
[INFO] [stderr] 98 |         let mut output: Box<Write> = match matches.opt_str("output") {
[INFO] [stderr]    |                             ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:111:31
[INFO] [stderr]     |
[INFO] [stderr] 111 | fn check_utf8mb4(reader: &mut Read) {
[INFO] [stderr]     |                               ^^^^ help: use `dyn`: `dyn Read`
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/enctool-eed48c88d7816334
[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" "b3754a5314781185d92e584c34c36082a3d52e10cad08c944920b05ad973c7a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3754a5314781185d92e584c34c36082a3d52e10cad08c944920b05ad973c7a5", kill_on_drop: false }`
[INFO] [stdout] b3754a5314781185d92e584c34c36082a3d52e10cad08c944920b05ad973c7a5