[INFO] fetching crate slog-extra 0.1.2...
[INFO] testing slog-extra-0.1.2 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate slog-extra 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate slog-extra 0.1.2 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate slog-extra 0.1.2
[INFO] finished tweaking crates.io crate slog-extra 0.1.2
[INFO] tweaked toml for crates.io crate slog-extra 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5013149bfa0a24494a4494aeeb6c386e47b6e36ad61e728cd1984e5dfa2523b
[INFO] running `Command { std: "docker" "start" "-a" "b5013149bfa0a24494a4494aeeb6c386e47b6e36ad61e728cd1984e5dfa2523b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5013149bfa0a24494a4494aeeb6c386e47b6e36ad61e728cd1984e5dfa2523b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5013149bfa0a24494a4494aeeb6c386e47b6e36ad61e728cd1984e5dfa2523b", kill_on_drop: false }`
[INFO] [stdout] b5013149bfa0a24494a4494aeeb6c386e47b6e36ad61e728cd1984e5dfa2523b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 63bd97140487d4e6a2a49b0dae6be4d49a29314c72804fa06e19611b6fe53e16
[INFO] running `Command { std: "docker" "start" "-a" "63bd97140487d4e6a2a49b0dae6be4d49a29314c72804fa06e19611b6fe53e16", kill_on_drop: false }`
[INFO] [stderr]    Compiling slog v1.7.1
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling slog-extra v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> lib.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |             try!(v.serialize(record, k, &mut ser))
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> lib.rs:94:44
[INFO] [stdout]    |
[INFO] [stdout] 94 | type RecordValues = Vec<(&'static str, Box<Serialize + Send>)>;
[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] 94 - type RecordValues = Vec<(&'static str, Box<Serialize + Send>)>;
[INFO] [stdout] 94 + type RecordValues = Vec<(&'static str, Box<dyn Serialize + Send>)>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> lib.rs:222:43
[INFO] [stdout]     |
[INFO] [stdout] 222 |     record_values: Vec<(&'static str, Box<Serialize + Send>)>,
[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] 222 -     record_values: Vec<(&'static str, Box<Serialize + Send>)>,
[INFO] [stdout] 222 +     record_values: Vec<(&'static str, Box<dyn Serialize + Send>)>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> lib.rs:54:62
[INFO] [stdout]    |
[INFO] [stdout] 54 | ...                   .map(|&(k, ref v)| (k, v as &Serialize))
[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] 54 -                                 .map(|&(k, ref v)| (k, v as &Serialize))
[INFO] [stdout] 54 +                                 .map(|&(k, ref v)| (k, v as &dyn Serialize))
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `Command { std: "docker" "inspect" "63bd97140487d4e6a2a49b0dae6be4d49a29314c72804fa06e19611b6fe53e16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63bd97140487d4e6a2a49b0dae6be4d49a29314c72804fa06e19611b6fe53e16", kill_on_drop: false }`
[INFO] [stdout] 63bd97140487d4e6a2a49b0dae6be4d49a29314c72804fa06e19611b6fe53e16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 266ae4820e48e5b0df57eb66e3d023999163940006697ee818a6c03f37bd2922
[INFO] running `Command { std: "docker" "start" "-a" "266ae4820e48e5b0df57eb66e3d023999163940006697ee818a6c03f37bd2922", kill_on_drop: false }`
[INFO] [stderr]    Compiling slog-extra v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> lib.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |             try!(v.serialize(record, k, &mut ser))
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> lib.rs:94:44
[INFO] [stdout]    |
[INFO] [stdout] 94 | type RecordValues = Vec<(&'static str, Box<Serialize + Send>)>;
[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] 94 - type RecordValues = Vec<(&'static str, Box<Serialize + Send>)>;
[INFO] [stdout] 94 + type RecordValues = Vec<(&'static str, Box<dyn Serialize + Send>)>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> lib.rs:222:43
[INFO] [stdout]     |
[INFO] [stdout] 222 |     record_values: Vec<(&'static str, Box<Serialize + Send>)>,
[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] 222 -     record_values: Vec<(&'static str, Box<Serialize + Send>)>,
[INFO] [stdout] 222 +     record_values: Vec<(&'static str, Box<dyn Serialize + Send>)>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> lib.rs:54:62
[INFO] [stdout]    |
[INFO] [stdout] 54 | ...                   .map(|&(k, ref v)| (k, v as &Serialize))
[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] 54 -                                 .map(|&(k, ref v)| (k, v as &Serialize))
[INFO] [stdout] 54 +                                 .map(|&(k, ref v)| (k, v as &dyn Serialize))
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> lib.rs:194:13
[INFO] [stdout]     |
[INFO] [stdout] 194 |             try!(v.serialize(record, k, &mut ser))
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> lib.rs:94:44
[INFO] [stdout]    |
[INFO] [stdout] 94 | type RecordValues = Vec<(&'static str, Box<Serialize + Send>)>;
[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] 94 - type RecordValues = Vec<(&'static str, Box<Serialize + Send>)>;
[INFO] [stdout] 94 + type RecordValues = Vec<(&'static str, Box<dyn Serialize + Send>)>;
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> lib.rs:222:43
[INFO] [stdout]     |
[INFO] [stdout] 222 |     record_values: Vec<(&'static str, Box<Serialize + Send>)>,
[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] 222 -     record_values: Vec<(&'static str, Box<Serialize + Send>)>,
[INFO] [stdout] 222 +     record_values: Vec<(&'static str, Box<dyn Serialize + Send>)>,
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> lib.rs:54:62
[INFO] [stdout]    |
[INFO] [stdout] 54 | ...                   .map(|&(k, ref v)| (k, v as &Serialize))
[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] 54 -                                 .map(|&(k, ref v)| (k, v as &Serialize))
[INFO] [stdout] 54 +                                 .map(|&(k, ref v)| (k, v as &dyn Serialize))
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "266ae4820e48e5b0df57eb66e3d023999163940006697ee818a6c03f37bd2922", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "266ae4820e48e5b0df57eb66e3d023999163940006697ee818a6c03f37bd2922", kill_on_drop: false }`
[INFO] [stdout] 266ae4820e48e5b0df57eb66e3d023999163940006697ee818a6c03f37bd2922
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 82cec0762cb9475a2af349f425c21a86ebdaedbd77d2d866e16770f8c441ce55
[INFO] running `Command { std: "docker" "start" "-a" "82cec0762cb9475a2af349f425c21a86ebdaedbd77d2d866e16770f8c441ce55", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> lib.rs:194:13
[INFO] [stderr]     |
[INFO] [stderr] 194 |             try!(v.serialize(record, k, &mut ser))
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> lib.rs:94:44
[INFO] [stderr]    |
[INFO] [stderr] 94 | type RecordValues = Vec<(&'static str, Box<Serialize + Send>)>;
[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] 94 - type RecordValues = Vec<(&'static str, Box<Serialize + Send>)>;
[INFO] [stderr] 94 + type RecordValues = Vec<(&'static str, Box<dyn Serialize + Send>)>;
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> lib.rs:222:43
[INFO] [stderr]     |
[INFO] [stderr] 222 |     record_values: Vec<(&'static str, Box<Serialize + Send>)>,
[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] 222 -     record_values: Vec<(&'static str, Box<Serialize + Send>)>,
[INFO] [stderr] 222 +     record_values: Vec<(&'static str, Box<dyn Serialize + Send>)>,
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> lib.rs:54:62
[INFO] [stderr]    |
[INFO] [stderr] 54 | ...                   .map(|&(k, ref v)| (k, v as &Serialize))
[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] 54 -                                 .map(|&(k, ref v)| (k, v as &Serialize))
[INFO] [stderr] 54 +                                 .map(|&(k, ref v)| (k, v as &dyn Serialize))
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: `slog-extra` (lib) generated 4 warnings
[INFO] [stderr] warning: `slog-extra` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/slog_extra-d36b642a3cd53a54)
[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] [stderr]    Doc-tests slog-extra
[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" "82cec0762cb9475a2af349f425c21a86ebdaedbd77d2d866e16770f8c441ce55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82cec0762cb9475a2af349f425c21a86ebdaedbd77d2d866e16770f8c441ce55", kill_on_drop: false }`
[INFO] [stdout] 82cec0762cb9475a2af349f425c21a86ebdaedbd77d2d866e16770f8c441ce55