[INFO] fetching crate cdoc 0.8.1...
[INFO] checking cdoc-0.8.1 against try#94382f34384023f3d2062a34ccf0bb6b4d44a75a for mutual-coercion
[INFO] extracting crate cdoc 0.8.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate cdoc 0.8.1
[INFO] finished tweaking crates.io crate cdoc 0.8.1
[INFO] tweaked toml for crates.io crate cdoc 0.8.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cdoc 0.8.1 on toolchain 94382f34384023f3d2062a34ccf0bb6b4d44a75a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate cdoc 0.8.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22e11ca11f84d1906e91317efcf70aa9297dd30ac2a4d98b1d324a8ec4487a48
[INFO] running `Command { std: "docker" "start" "-a" "22e11ca11f84d1906e91317efcf70aa9297dd30ac2a4d98b1d324a8ec4487a48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22e11ca11f84d1906e91317efcf70aa9297dd30ac2a4d98b1d324a8ec4487a48", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22e11ca11f84d1906e91317efcf70aa9297dd30ac2a4d98b1d324a8ec4487a48", kill_on_drop: false }`
[INFO] [stdout] 22e11ca11f84d1906e91317efcf70aa9297dd30ac2a4d98b1d324a8ec4487a48
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+94382f34384023f3d2062a34ccf0bb6b4d44a75a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 684960ee4474dd46df1e92ce98356a153826a0b9404b6ce2fe74df2ad3b990d8
[INFO] running `Command { std: "docker" "start" "-a" "684960ee4474dd46df1e92ce98356a153826a0b9404b6ce2fe74df2ad3b990d8", kill_on_drop: false }`
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[INFO] [stdout] warning: unexpected `cfg` condition value: `katex`
[INFO] [stdout]   --> src/parser.rs:81:11
[INFO] [stdout]    |
[INFO] [stdout] 81 |     #[cfg(feature = "katex")]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `katex` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition value: `katex`
[INFO] [stdout]   --> src/parser.rs:81:11
[INFO] [stdout]    |
[INFO] [stdout] 81 |     #[cfg(feature = "katex")]
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^ help: remove the condition
[INFO] [stdout]    |
[INFO] [stdout]    = note: no expected values for `feature`
[INFO] [stdout]    = help: consider adding `katex` as a feature in `Cargo.toml`
[INFO] [stdout]    = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]    = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/config.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `config::Format + Send + Sync`, found trait `config::Format`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn config::Format + Send + Sync>` to `Box<dyn config::Format>`
[INFO] [stdout]    = note: expected struct `Box<dyn config::Format>`
[INFO] [stdout]               found struct `Box<dyn config::Format + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/config.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `config::Format + Send + Sync`, found trait `config::Format + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn config::Format + Send + Sync>` to `Box<dyn config::Format + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn config::Format + Send>`
[INFO] [stdout]               found struct `Box<dyn config::Format + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/config.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `config::Format + Send + Sync`, found trait `config::Format + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn config::Format + Send + Sync>` to `Box<dyn config::Format + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn config::Format + Sync>`
[INFO] [stdout]               found struct `Box<dyn config::Format + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/preprocessors/mod.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `AstPreprocessorConfig + Send + Sync`, found trait `AstPreprocessorConfig`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn AstPreprocessorConfig + Send + Sync>` to `Box<dyn AstPreprocessorConfig>`
[INFO] [stdout]    = note: expected struct `Box<dyn AstPreprocessorConfig>`
[INFO] [stdout]               found struct `Box<dyn AstPreprocessorConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/preprocessors/mod.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `AstPreprocessorConfig + Send + Sync`, found trait `AstPreprocessorConfig + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn AstPreprocessorConfig + Send + Sync>` to `Box<dyn AstPreprocessorConfig + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn AstPreprocessorConfig + Send>`
[INFO] [stdout]               found struct `Box<dyn AstPreprocessorConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/preprocessors/mod.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `AstPreprocessorConfig + Send + Sync`, found trait `AstPreprocessorConfig + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn AstPreprocessorConfig + Send + Sync>` to `Box<dyn AstPreprocessorConfig + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn AstPreprocessorConfig + Sync>`
[INFO] [stdout]               found struct `Box<dyn AstPreprocessorConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/renderers/extensions/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `RenderExtensionConfig + Send + Sync`, found trait `RenderExtensionConfig`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn RenderExtensionConfig + Send + Sync>` to `Box<dyn RenderExtensionConfig>`
[INFO] [stdout]    = note: expected struct `Box<dyn RenderExtensionConfig>`
[INFO] [stdout]               found struct `Box<dyn RenderExtensionConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/renderers/extensions/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `RenderExtensionConfig + Send + Sync`, found trait `RenderExtensionConfig + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn RenderExtensionConfig + Send + Sync>` to `Box<dyn RenderExtensionConfig + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn RenderExtensionConfig + Send>`
[INFO] [stdout]               found struct `Box<dyn RenderExtensionConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/renderers/extensions/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `RenderExtensionConfig + Send + Sync`, found trait `RenderExtensionConfig + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn RenderExtensionConfig + Send + Sync>` to `Box<dyn RenderExtensionConfig + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn RenderExtensionConfig + Sync>`
[INFO] [stdout]               found struct `Box<dyn RenderExtensionConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]    --> src/renderers/mod.rs:108:1
[INFO] [stdout]     |
[INFO] [stdout] 108 | #[typetag::serde]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^ expected trait `DocumentRenderer + Send + Sync`, found trait `DocumentRenderer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `?` operator cannot convert from `Box<dyn DocumentRenderer + Send + Sync>` to `Box<dyn DocumentRenderer>`
[INFO] [stdout]     = note: expected struct `Box<dyn DocumentRenderer>`
[INFO] [stdout]                found struct `Box<dyn DocumentRenderer + Send + Sync>`
[INFO] [stdout]     = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]    --> src/renderers/mod.rs:108:1
[INFO] [stdout]     |
[INFO] [stdout] 108 | #[typetag::serde]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^ expected trait `DocumentRenderer + Send + Sync`, found trait `DocumentRenderer + Send`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `?` operator cannot convert from `Box<dyn DocumentRenderer + Send + Sync>` to `Box<dyn DocumentRenderer + Send>`
[INFO] [stdout]     = note: expected struct `Box<dyn DocumentRenderer + Send>`
[INFO] [stdout]                found struct `Box<dyn DocumentRenderer + Send + Sync>`
[INFO] [stdout]     = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]    --> src/renderers/mod.rs:108:1
[INFO] [stdout]     |
[INFO] [stdout] 108 | #[typetag::serde]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^ expected trait `DocumentRenderer + Send + Sync`, found trait `DocumentRenderer + Sync`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `?` operator cannot convert from `Box<dyn DocumentRenderer + Send + Sync>` to `Box<dyn DocumentRenderer + Sync>`
[INFO] [stdout]     = note: expected struct `Box<dyn DocumentRenderer + Sync>`
[INFO] [stdout]                found struct `Box<dyn DocumentRenderer + Send + Sync>`
[INFO] [stdout]     = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/config.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `config::Format + Send + Sync`, found trait `config::Format`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn config::Format + Send + Sync>` to `Box<dyn config::Format>`
[INFO] [stdout]    = note: expected struct `Box<dyn config::Format>`
[INFO] [stdout]               found struct `Box<dyn config::Format + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/config.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `config::Format + Send + Sync`, found trait `config::Format + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn config::Format + Send + Sync>` to `Box<dyn config::Format + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn config::Format + Send>`
[INFO] [stdout]               found struct `Box<dyn config::Format + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/config.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `config::Format + Send + Sync`, found trait `config::Format + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn config::Format + Send + Sync>` to `Box<dyn config::Format + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn config::Format + Sync>`
[INFO] [stdout]               found struct `Box<dyn config::Format + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/preprocessors/mod.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `AstPreprocessorConfig + Send + Sync`, found trait `AstPreprocessorConfig`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn AstPreprocessorConfig + Send + Sync>` to `Box<dyn AstPreprocessorConfig>`
[INFO] [stdout]    = note: expected struct `Box<dyn AstPreprocessorConfig>`
[INFO] [stdout]               found struct `Box<dyn AstPreprocessorConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/preprocessors/mod.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `AstPreprocessorConfig + Send + Sync`, found trait `AstPreprocessorConfig + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn AstPreprocessorConfig + Send + Sync>` to `Box<dyn AstPreprocessorConfig + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn AstPreprocessorConfig + Send>`
[INFO] [stdout]               found struct `Box<dyn AstPreprocessorConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/preprocessors/mod.rs:40:1
[INFO] [stdout]    |
[INFO] [stdout] 40 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `AstPreprocessorConfig + Send + Sync`, found trait `AstPreprocessorConfig + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn AstPreprocessorConfig + Send + Sync>` to `Box<dyn AstPreprocessorConfig + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn AstPreprocessorConfig + Sync>`
[INFO] [stdout]               found struct `Box<dyn AstPreprocessorConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/renderers/extensions/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `RenderExtensionConfig + Send + Sync`, found trait `RenderExtensionConfig`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn RenderExtensionConfig + Send + Sync>` to `Box<dyn RenderExtensionConfig>`
[INFO] [stdout]    = note: expected struct `Box<dyn RenderExtensionConfig>`
[INFO] [stdout]               found struct `Box<dyn RenderExtensionConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/renderers/extensions/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `RenderExtensionConfig + Send + Sync`, found trait `RenderExtensionConfig + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn RenderExtensionConfig + Send + Sync>` to `Box<dyn RenderExtensionConfig + Send>`
[INFO] [stdout]    = note: expected struct `Box<dyn RenderExtensionConfig + Send>`
[INFO] [stdout]               found struct `Box<dyn RenderExtensionConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]   --> src/renderers/extensions/mod.rs:16:1
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[typetag::serde]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^ expected trait `RenderExtensionConfig + Send + Sync`, found trait `RenderExtensionConfig + Sync`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `?` operator cannot convert from `Box<dyn RenderExtensionConfig + Send + Sync>` to `Box<dyn RenderExtensionConfig + Sync>`
[INFO] [stdout]    = note: expected struct `Box<dyn RenderExtensionConfig + Sync>`
[INFO] [stdout]               found struct `Box<dyn RenderExtensionConfig + Send + Sync>`
[INFO] [stdout]    = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]    --> src/renderers/mod.rs:108:1
[INFO] [stdout]     |
[INFO] [stdout] 108 | #[typetag::serde]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^ expected trait `DocumentRenderer + Send + Sync`, found trait `DocumentRenderer`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `?` operator cannot convert from `Box<dyn DocumentRenderer + Send + Sync>` to `Box<dyn DocumentRenderer>`
[INFO] [stdout]     = note: expected struct `Box<dyn DocumentRenderer>`
[INFO] [stdout]                found struct `Box<dyn DocumentRenderer + Send + Sync>`
[INFO] [stdout]     = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]    --> src/renderers/mod.rs:108:1
[INFO] [stdout]     |
[INFO] [stdout] 108 | #[typetag::serde]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^ expected trait `DocumentRenderer + Send + Sync`, found trait `DocumentRenderer + Send`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `?` operator cannot convert from `Box<dyn DocumentRenderer + Send + Sync>` to `Box<dyn DocumentRenderer + Send>`
[INFO] [stdout]     = note: expected struct `Box<dyn DocumentRenderer + Send>`
[INFO] [stdout]                found struct `Box<dyn DocumentRenderer + Send + Sync>`
[INFO] [stdout]     = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: `?` operator has incompatible types
[INFO] [stdout]    --> src/renderers/mod.rs:108:1
[INFO] [stdout]     |
[INFO] [stdout] 108 | #[typetag::serde]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^ expected trait `DocumentRenderer + Send + Sync`, found trait `DocumentRenderer + Sync`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `?` operator cannot convert from `Box<dyn DocumentRenderer + Send + Sync>` to `Box<dyn DocumentRenderer + Sync>`
[INFO] [stdout]     = note: expected struct `Box<dyn DocumentRenderer + Sync>`
[INFO] [stdout]                found struct `Box<dyn DocumentRenderer + Send + Sync>`
[INFO] [stdout]     = note: this error originates in the attribute macro `typetag::serde` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cdoc` (lib test) due to 12 previous errors; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cdoc` (lib) due to 12 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "684960ee4474dd46df1e92ce98356a153826a0b9404b6ce2fe74df2ad3b990d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "684960ee4474dd46df1e92ce98356a153826a0b9404b6ce2fe74df2ad3b990d8", kill_on_drop: false }`
[INFO] [stdout] 684960ee4474dd46df1e92ce98356a153826a0b9404b6ce2fe74df2ad3b990d8
