[INFO] cloning repository https://github.com/pietrovismara/rson
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pietrovismara/rson" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpietrovismara%2Frson", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpietrovismara%2Frson'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5bc049bd6ca234752113f9b47e99751f2bb708a3
[INFO] testing pietrovismara/rson against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpietrovismara%2Frson" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pietrovismara/rson on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pietrovismara/rson
[INFO] finished tweaking git repo https://github.com/pietrovismara/rson
[INFO] tweaked toml for git repo https://github.com/pietrovismara/rson written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/pietrovismara/rson already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e9419c7db95da39b5be9ced1bd417556a34a3ebd23fde1f7dfbab0b28955ed3
[INFO] running `Command { std: "docker" "start" "-a" "9e9419c7db95da39b5be9ced1bd417556a34a3ebd23fde1f7dfbab0b28955ed3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e9419c7db95da39b5be9ced1bd417556a34a3ebd23fde1f7dfbab0b28955ed3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e9419c7db95da39b5be9ced1bd417556a34a3ebd23fde1f7dfbab0b28955ed3", kill_on_drop: false }`
[INFO] [stdout] 9e9419c7db95da39b5be9ced1bd417556a34a3ebd23fde1f7dfbab0b28955ed3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4953dcc36d2e8ea0bd1f4279df8093ae4edb3182f5ecf5a0927f095e1a143e21
[INFO] running `Command { std: "docker" "start" "-a" "4953dcc36d2e8ea0bd1f4279df8093ae4edb3182f5ecf5a0927f095e1a143e21", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.29
[INFO] [stderr]    Compiling strsim v0.5.2
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling itoa v0.3.1
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling serde v1.0.11
[INFO] [stderr]    Compiling unicode-segmentation v0.1.3
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling dtoa v0.4.1
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling vec_map v0.6.0
[INFO] [stderr]    Compiling term_size v0.2.3
[INFO] [stderr]    Compiling clap v2.19.3
[INFO] [stderr]    Compiling serde_json v1.0.2
[INFO] [stderr]    Compiling rson v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:158:39
[INFO] [stdout]     |
[INFO] [stdout] 158 | fn read_stdin() -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 158 - fn read_stdin() -> Result<String, Box<Error>> {
[INFO] [stdout] 158 + fn read_stdin() -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:170:35
[INFO] [stdout]     |
[INFO] [stdout] 170 | fn pretty() -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 - fn pretty() -> Result<String, Box<Error>> {
[INFO] [stdout] 170 + fn pretty() -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:177:52
[INFO] [stdout]     |
[INFO] [stdout] 177 | fn pick(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 177 - fn pick(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 177 + fn pick(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:191:51
[INFO] [stdout]     |
[INFO] [stdout] 191 | fn get(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 191 - fn get(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 191 + fn get(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:202:54
[INFO] [stdout]     |
[INFO] [stdout] 202 | fn filter(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 202 - fn filter(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 202 + fn filter(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:229:52
[INFO] [stdout]     |
[INFO] [stdout] 229 | fn some(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 229 - fn some(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 229 + fn some(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:256:53
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn every(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 256 - fn every(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 256 + fn every(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:283:52
[INFO] [stdout]     |
[INFO] [stdout] 283 | fn find(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 283 - fn find(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 283 + fn find(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:313:55
[INFO] [stdout]     |
[INFO] [stdout] 313 | fn length(_matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 313 - fn length(_matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 313 + fn length(_matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:321:110
[INFO] [stdout]     |
[INFO] [stdout] 321 | fn prepare_array_op(matches: ArgMatches, command_name: &str) -> Result<(String, String, parsers::Value), Box<Error>> {
[INFO] [stdout]     |                                                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 321 - fn prepare_array_op(matches: ArgMatches, command_name: &str) -> Result<(String, String, parsers::Value), Box<Error>> {
[INFO] [stdout] 321 + fn prepare_array_op(matches: ArgMatches, command_name: &str) -> Result<(String, String, parsers::Value), Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:330:58
[INFO] [stdout]     |
[INFO] [stdout] 330 | fn prepare_array_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout]     |                                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 330 - fn prepare_array_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout] 330 + fn prepare_array_data() -> Result<serde_json::Value, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:341:59
[INFO] [stdout]     |
[INFO] [stdout] 341 | fn prepare_object_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout]     |                                                           ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 341 - fn prepare_object_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout] 341 + fn prepare_object_data() -> Result<serde_json::Value, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:352:60
[INFO] [stdout]     |
[INFO] [stdout] 352 | fn prepare_generic_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout]     |                                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 352 - fn prepare_generic_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout] 352 + fn prepare_generic_data() -> Result<serde_json::Value, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:377:48
[INFO] [stdout]     |
[INFO] [stdout] 377 | fn read(matches: ArgMatches) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 377 - fn read(matches: ArgMatches) -> Result<(), Box<Error>> {
[INFO] [stdout] 377 + fn read(matches: ArgMatches) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:391:54
[INFO] [stdout]     |
[INFO] [stdout] 391 | fn read_file(filename: String) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 391 - fn read_file(filename: String) -> Result<String, Box<Error>> {
[INFO] [stdout] 391 + fn read_file(filename: String) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 20.38s
[INFO] running `Command { std: "docker" "inspect" "4953dcc36d2e8ea0bd1f4279df8093ae4edb3182f5ecf5a0927f095e1a143e21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4953dcc36d2e8ea0bd1f4279df8093ae4edb3182f5ecf5a0927f095e1a143e21", kill_on_drop: false }`
[INFO] [stdout] 4953dcc36d2e8ea0bd1f4279df8093ae4edb3182f5ecf5a0927f095e1a143e21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2404e7b7c97e194068ed292101183991cb054b75df6ba35cac4b24315d0f8eab
[INFO] running `Command { std: "docker" "start" "-a" "2404e7b7c97e194068ed292101183991cb054b75df6ba35cac4b24315d0f8eab", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.29
[INFO] [stderr]    Compiling dtoa v0.4.1
[INFO] [stderr]    Compiling itoa v0.3.1
[INFO] [stderr]    Compiling serde v1.0.11
[INFO] [stderr]    Compiling unicode-segmentation v0.1.3
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling ansi_term v0.9.0
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling strsim v0.5.2
[INFO] [stderr]    Compiling vec_map v0.6.0
[INFO] [stderr]    Compiling term_size v0.2.3
[INFO] [stderr]    Compiling clap v2.19.3
[INFO] [stderr]    Compiling serde_json v1.0.2
[INFO] [stderr]    Compiling rson v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:158:39
[INFO] [stdout]     |
[INFO] [stdout] 158 | fn read_stdin() -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 158 - fn read_stdin() -> Result<String, Box<Error>> {
[INFO] [stdout] 158 + fn read_stdin() -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:170:35
[INFO] [stdout]     |
[INFO] [stdout] 170 | fn pretty() -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 170 - fn pretty() -> Result<String, Box<Error>> {
[INFO] [stdout] 170 + fn pretty() -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:177:52
[INFO] [stdout]     |
[INFO] [stdout] 177 | fn pick(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 177 - fn pick(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 177 + fn pick(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:191:51
[INFO] [stdout]     |
[INFO] [stdout] 191 | fn get(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 191 - fn get(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 191 + fn get(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:202:54
[INFO] [stdout]     |
[INFO] [stdout] 202 | fn filter(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 202 - fn filter(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 202 + fn filter(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:229:52
[INFO] [stdout]     |
[INFO] [stdout] 229 | fn some(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 229 - fn some(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 229 + fn some(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:256:53
[INFO] [stdout]     |
[INFO] [stdout] 256 | fn every(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 256 - fn every(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 256 + fn every(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:283:52
[INFO] [stdout]     |
[INFO] [stdout] 283 | fn find(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 283 - fn find(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 283 + fn find(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:313:55
[INFO] [stdout]     |
[INFO] [stdout] 313 | fn length(_matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                       ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 313 - fn length(_matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stdout] 313 + fn length(_matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:321:110
[INFO] [stdout]     |
[INFO] [stdout] 321 | fn prepare_array_op(matches: ArgMatches, command_name: &str) -> Result<(String, String, parsers::Value), Box<Error>> {
[INFO] [stdout]     |                                                                                                              ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 321 - fn prepare_array_op(matches: ArgMatches, command_name: &str) -> Result<(String, String, parsers::Value), Box<Error>> {
[INFO] [stdout] 321 + fn prepare_array_op(matches: ArgMatches, command_name: &str) -> Result<(String, String, parsers::Value), Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:330:58
[INFO] [stdout]     |
[INFO] [stdout] 330 | fn prepare_array_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout]     |                                                          ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 330 - fn prepare_array_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout] 330 + fn prepare_array_data() -> Result<serde_json::Value, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:341:59
[INFO] [stdout]     |
[INFO] [stdout] 341 | fn prepare_object_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout]     |                                                           ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 341 - fn prepare_object_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout] 341 + fn prepare_object_data() -> Result<serde_json::Value, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:352:60
[INFO] [stdout]     |
[INFO] [stdout] 352 | fn prepare_generic_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout]     |                                                            ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 352 - fn prepare_generic_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stdout] 352 + fn prepare_generic_data() -> Result<serde_json::Value, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:377:48
[INFO] [stdout]     |
[INFO] [stdout] 377 | fn read(matches: ArgMatches) -> Result<(), Box<Error>> {
[INFO] [stdout]     |                                                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 377 - fn read(matches: ArgMatches) -> Result<(), Box<Error>> {
[INFO] [stdout] 377 + fn read(matches: ArgMatches) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:391:54
[INFO] [stdout]     |
[INFO] [stdout] 391 | fn read_file(filename: String) -> Result<String, Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) 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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 391 - fn read_file(filename: String) -> Result<String, Box<Error>> {
[INFO] [stdout] 391 + fn read_file(filename: String) -> Result<String, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 5.15s
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/rson-d89ec732c44fc056)
[INFO] running `Command { std: "docker" "inspect" "2404e7b7c97e194068ed292101183991cb054b75df6ba35cac4b24315d0f8eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2404e7b7c97e194068ed292101183991cb054b75df6ba35cac4b24315d0f8eab", kill_on_drop: false }`
[INFO] [stdout] 2404e7b7c97e194068ed292101183991cb054b75df6ba35cac4b24315d0f8eab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 230bc27719d3db2d1c1b78bcf6ce91c43fbac6514fb146d9c127aea2a3405fda
[INFO] running `Command { std: "docker" "start" "-a" "230bc27719d3db2d1c1b78bcf6ce91c43fbac6514fb146d9c127aea2a3405fda", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:158:39
[INFO] [stderr]     |
[INFO] [stderr] 158 | fn read_stdin() -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                       ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 158 - fn read_stdin() -> Result<String, Box<Error>> {
[INFO] [stderr] 158 + fn read_stdin() -> Result<String, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:170:35
[INFO] [stderr]     |
[INFO] [stderr] 170 | fn pretty() -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 170 - fn pretty() -> Result<String, Box<Error>> {
[INFO] [stderr] 170 + fn pretty() -> Result<String, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:177:52
[INFO] [stderr]     |
[INFO] [stderr] 177 | fn pick(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                                    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 177 - fn pick(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr] 177 + fn pick(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:191:51
[INFO] [stderr]     |
[INFO] [stderr] 191 | fn get(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                                   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 191 - fn get(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr] 191 + fn get(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:202:54
[INFO] [stderr]     |
[INFO] [stderr] 202 | fn filter(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                                      ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 202 - fn filter(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr] 202 + fn filter(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:229:52
[INFO] [stderr]     |
[INFO] [stderr] 229 | fn some(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                                    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 229 - fn some(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr] 229 + fn some(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:256:53
[INFO] [stderr]     |
[INFO] [stderr] 256 | fn every(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                                     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 256 - fn every(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr] 256 + fn every(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:283:52
[INFO] [stderr]     |
[INFO] [stderr] 283 | fn find(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                                    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 283 - fn find(matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr] 283 + fn find(matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:313:55
[INFO] [stderr]     |
[INFO] [stderr] 313 | fn length(_matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                                       ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 313 - fn length(_matches: ArgMatches) -> Result<String, Box<Error>> {
[INFO] [stderr] 313 + fn length(_matches: ArgMatches) -> Result<String, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:321:110
[INFO] [stderr]     |
[INFO] [stderr] 321 | fn prepare_array_op(matches: ArgMatches, command_name: &str) -> Result<(String, String, parsers::Value), Box<Error>> {
[INFO] [stderr]     |                                                                                                              ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 321 - fn prepare_array_op(matches: ArgMatches, command_name: &str) -> Result<(String, String, parsers::Value), Box<Error>> {
[INFO] [stderr] 321 + fn prepare_array_op(matches: ArgMatches, command_name: &str) -> Result<(String, String, parsers::Value), Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:330:58
[INFO] [stderr]     |
[INFO] [stderr] 330 | fn prepare_array_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stderr]     |                                                          ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 330 - fn prepare_array_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stderr] 330 + fn prepare_array_data() -> Result<serde_json::Value, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:341:59
[INFO] [stderr]     |
[INFO] [stderr] 341 | fn prepare_object_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stderr]     |                                                           ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 341 - fn prepare_object_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stderr] 341 + fn prepare_object_data() -> Result<serde_json::Value, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:352:60
[INFO] [stderr]     |
[INFO] [stderr] 352 | fn prepare_generic_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stderr]     |                                                            ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 352 - fn prepare_generic_data() -> Result<serde_json::Value, Box<Error>> {
[INFO] [stderr] 352 + fn prepare_generic_data() -> Result<serde_json::Value, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:377:48
[INFO] [stderr]     |
[INFO] [stderr] 377 | fn read(matches: ArgMatches) -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 377 - fn read(matches: ArgMatches) -> Result<(), Box<Error>> {
[INFO] [stderr] 377 + fn read(matches: ArgMatches) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:391:54
[INFO] [stderr]     |
[INFO] [stderr] 391 | fn read_file(filename: String) -> Result<String, Box<Error>> {
[INFO] [stderr]     |                                                      ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 391 - fn read_file(filename: String) -> Result<String, Box<Error>> {
[INFO] [stderr] 391 + fn read_file(filename: String) -> Result<String, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `rson` (bin "rson" test) generated 15 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rson-d89ec732c44fc056)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "230bc27719d3db2d1c1b78bcf6ce91c43fbac6514fb146d9c127aea2a3405fda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "230bc27719d3db2d1c1b78bcf6ce91c43fbac6514fb146d9c127aea2a3405fda", kill_on_drop: false }`
[INFO] [stdout] 230bc27719d3db2d1c1b78bcf6ce91c43fbac6514fb146d9c127aea2a3405fda