[INFO] fetching crate colored_json 2.1.0...
[INFO] testing colored_json-2.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate colored_json 2.1.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate colored_json 2.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate colored_json 2.1.0
[INFO] finished tweaking crates.io crate colored_json 2.1.0
[INFO] tweaked toml for crates.io crate colored_json 2.1.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate colored_json 2.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "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] 7aa0f53347893cc4cc003f5f2809020ce9ac6f9cfc32ea127fdced1f793b9fe5
[INFO] running `Command { std: "docker" "start" "-a" "7aa0f53347893cc4cc003f5f2809020ce9ac6f9cfc32ea127fdced1f793b9fe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7aa0f53347893cc4cc003f5f2809020ce9ac6f9cfc32ea127fdced1f793b9fe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7aa0f53347893cc4cc003f5f2809020ce9ac6f9cfc32ea127fdced1f793b9fe5", kill_on_drop: false }`
[INFO] [stdout] 7aa0f53347893cc4cc003f5f2809020ce9ac6f9cfc32ea127fdced1f793b9fe5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5de42d80a15831efa5a08008a80d98ecad6f78d3349869c1397af4aa6251ee0b
[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" "5de42d80a15831efa5a08008a80d98ecad6f78d3349869c1397af4aa6251ee0b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling colored_json v2.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.12s
[INFO] running `Command { std: "docker" "inspect" "5de42d80a15831efa5a08008a80d98ecad6f78d3349869c1397af4aa6251ee0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5de42d80a15831efa5a08008a80d98ecad6f78d3349869c1397af4aa6251ee0b", kill_on_drop: false }`
[INFO] [stdout] 5de42d80a15831efa5a08008a80d98ecad6f78d3349869c1397af4aa6251ee0b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 368cdd18a57d0262223ab93e864cd4b71be5662c906388013e99c07da8a0a365
[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" "368cdd18a57d0262223ab93e864cd4b71be5662c906388013e99c07da8a0a365", kill_on_drop: false }`
[INFO] [stderr]    Compiling colored_json v2.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> examples/color.rs:6:44
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn main() -> ::std::result::Result<(), Box<::std::error::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 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: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn main() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stdout]   |                                            +++++                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/test.rs:8:48
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn test_display_json_value() -> Result<(), 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 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: use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 - fn test_display_json_value() -> Result<(), Box<Error>> {
[INFO] [stdout] 8 + fn test_display_json_value() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]   | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/test.rs:28:35
[INFO] [stdout]    |
[INFO] [stdout] 28 | fn test_trait() -> Result<(), Box<Error>> {
[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: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 28 - fn test_trait() -> Result<(), Box<Error>> {
[INFO] [stdout] 28 + fn test_trait() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/test.rs:50:39
[INFO] [stdout]    |
[INFO] [stdout] 50 | fn test_trait_err() -> Result<(), Box<Error>> {
[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: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 50 - fn test_trait_err() -> Result<(), Box<Error>> {
[INFO] [stdout] 50 + fn test_trait_err() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/test.rs:72:45
[INFO] [stdout]    |
[INFO] [stdout] 72 | fn test_trait_color_off() -> Result<(), Box<Error>> {
[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: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 72 - fn test_trait_color_off() -> Result<(), Box<Error>> {
[INFO] [stdout] 72 + fn test_trait_color_off() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/test.rs:94:42
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn test_trait_styler() -> Result<(), Box<Error>> {
[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: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 - fn test_trait_styler() -> Result<(), Box<Error>> {
[INFO] [stdout] 94 + fn test_trait_styler() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/test.rs:127:52
[INFO] [stdout]     |
[INFO] [stdout] 127 | fn test_trait_styler_color_off() -> Result<(), Box<Error>> {
[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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 127 - fn test_trait_styler_color_off() -> Result<(), Box<Error>> {
[INFO] [stdout] 127 + fn test_trait_styler_color_off() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/test.rs:160:36
[INFO] [stdout]     |
[INFO] [stdout] 160 | fn test_writer() -> Result<(), Box<Error>> {
[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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 160 - fn test_writer() -> Result<(), Box<Error>> {
[INFO] [stdout] 160 + fn test_writer() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/test.rs:183:36
[INFO] [stdout]     |
[INFO] [stdout] 183 | fn test_styler() -> Result<(), Box<Error>> {
[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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 183 - fn test_styler() -> Result<(), Box<Error>> {
[INFO] [stdout] 183 + fn test_styler() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/test.rs:224:45
[INFO] [stdout]     |
[INFO] [stdout] 224 | fn test_styler_no_color() -> Result<(), Box<Error>> {
[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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 224 - fn test_styler_no_color() -> Result<(), Box<Error>> {
[INFO] [stdout] 224 + fn test_styler_no_color() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/test.rs:268:44
[INFO] [stdout]     |
[INFO] [stdout] 268 | fn test_styler_compact() -> Result<(), Box<Error>> {
[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: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 268 - fn test_styler_compact() -> Result<(), Box<Error>> {
[INFO] [stdout] 268 + fn test_styler_compact() -> Result<(), Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.13s
[INFO] running `Command { std: "docker" "inspect" "368cdd18a57d0262223ab93e864cd4b71be5662c906388013e99c07da8a0a365", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "368cdd18a57d0262223ab93e864cd4b71be5662c906388013e99c07da8a0a365", kill_on_drop: false }`
[INFO] [stdout] 368cdd18a57d0262223ab93e864cd4b71be5662c906388013e99c07da8a0a365
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", 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] 57a5db137e181a22e9e8b6ef032bf18de64513d0094b192136589fd4fedbdcec
[INFO] running `Command { std: "docker" "start" "-a" "57a5db137e181a22e9e8b6ef032bf18de64513d0094b192136589fd4fedbdcec", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/test.rs:8:48
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn test_display_json_value() -> Result<(), 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 2018) 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] 8 - fn test_display_json_value() -> Result<(), Box<Error>> {
[INFO] [stderr] 8 + fn test_display_json_value() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]   | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/test.rs:28:35
[INFO] [stderr]    |
[INFO] [stderr] 28 | fn test_trait() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                   ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 28 - fn test_trait() -> Result<(), Box<Error>> {
[INFO] [stderr] 28 + fn test_trait() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/test.rs:50:39
[INFO] [stderr]    |
[INFO] [stderr] 50 | fn test_trait_err() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                       ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 50 - fn test_trait_err() -> Result<(), Box<Error>> {
[INFO] [stderr] 50 + fn test_trait_err() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/test.rs:72:45
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn test_trait_color_off() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                             ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 72 - fn test_trait_color_off() -> Result<(), Box<Error>> {
[INFO] [stderr] 72 + fn test_trait_color_off() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/test.rs:94:42
[INFO] [stderr]    |
[INFO] [stderr] 94 | fn test_trait_styler() -> Result<(), Box<Error>> {
[INFO] [stderr]    |                                          ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) 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] 94 - fn test_trait_styler() -> Result<(), Box<Error>> {
[INFO] [stderr] 94 + fn test_trait_styler() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/test.rs:127:52
[INFO] [stderr]     |
[INFO] [stderr] 127 | fn test_trait_styler_color_off() -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                                    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 127 - fn test_trait_styler_color_off() -> Result<(), Box<Error>> {
[INFO] [stderr] 127 + fn test_trait_styler_color_off() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/test.rs:160:36
[INFO] [stderr]     |
[INFO] [stderr] 160 | fn test_writer() -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 160 - fn test_writer() -> Result<(), Box<Error>> {
[INFO] [stderr] 160 + fn test_writer() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/test.rs:183:36
[INFO] [stderr]     |
[INFO] [stderr] 183 | fn test_styler() -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                    ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 183 - fn test_styler() -> Result<(), Box<Error>> {
[INFO] [stderr] 183 + fn test_styler() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/test.rs:224:45
[INFO] [stderr]     |
[INFO] [stderr] 224 | fn test_styler_no_color() -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                             ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 224 - fn test_styler_no_color() -> Result<(), Box<Error>> {
[INFO] [stderr] 224 + fn test_styler_no_color() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/test.rs:268:44
[INFO] [stderr]     |
[INFO] [stderr] 268 | fn test_styler_compact() -> Result<(), Box<Error>> {
[INFO] [stderr]     |                                            ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) 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] 268 - fn test_styler_compact() -> Result<(), Box<Error>> {
[INFO] [stderr] 268 + fn test_styler_compact() -> Result<(), Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `colored_json` (lib test) generated 10 warnings
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> examples/color.rs:6:44
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn main() -> ::std::result::Result<(), Box<::std::error::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 2018) 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] 6 | fn main() -> ::std::result::Result<(), Box<dyn (::std::error::Error)>> {
[INFO] [stderr]   |                                            +++++                   +
[INFO] [stderr] 
[INFO] [stderr] warning: `colored_json` (example "color") generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/colored_json-bb031f34be336307)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test test::test_styler ... ok
[INFO] [stdout] test test::test_styler_compact ... ok
[INFO] [stdout] test test::test_styler_no_color ... ok
[INFO] [stdout] test test::test_trait_err ... ok
[INFO] [stdout] test test::test_trait_styler ... ok
[INFO] [stdout] test test::test_trait_color_off ... ok
[INFO] [stdout] test test::test_trait ... ok
[INFO] [stdout] test test::test_display_json_value ... ok
[INFO] [stdout] test test::test_trait_styler_color_off ... ok
[INFO] [stdout] test test::test_writer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests colored_json
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/lib.rs - (line 5) ... ok
[INFO] [stdout] test src/lib.rs - ColorMode::eval (line 761) ... ok
[INFO] [stdout] test src/lib.rs - (line 40) ... ok
[INFO] [stdout] test src/lib.rs - ColorMode (line 728) ... ok
[INFO] [stdout] test src/lib.rs - ColorMode::use_color (line 780) ... ok
[INFO] [stdout] test src/lib.rs - (line 63) ... ok
[INFO] [stdout] test src/lib.rs - (line 15) ... ok
[INFO] [stdout] test src/lib.rs - (line 98) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.52s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "57a5db137e181a22e9e8b6ef032bf18de64513d0094b192136589fd4fedbdcec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57a5db137e181a22e9e8b6ef032bf18de64513d0094b192136589fd4fedbdcec", kill_on_drop: false }`
[INFO] [stdout] 57a5db137e181a22e9e8b6ef032bf18de64513d0094b192136589fd4fedbdcec