[INFO] fetching crate holochain_persistence_api 0.0.18...
[INFO] checking holochain_persistence_api-0.0.18 against try#7c3a44cf5f95fa5cf164a312bdcf845157af7093 for pr-77325
[INFO] extracting crate holochain_persistence_api 0.0.18 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate holochain_persistence_api 0.0.18 on toolchain 7c3a44cf5f95fa5cf164a312bdcf845157af7093
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate holochain_persistence_api 0.0.18
[INFO] finished tweaking crates.io crate holochain_persistence_api 0.0.18
[INFO] tweaked toml for crates.io crate holochain_persistence_api 0.0.18 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0cc15d1ced29bc13291cd2eb8f80997ef8d9daa2538ea1d99475dae6f6daedbb
[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" "0cc15d1ced29bc13291cd2eb8f80997ef8d9daa2538ea1d99475dae6f6daedbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cc15d1ced29bc13291cd2eb8f80997ef8d9daa2538ea1d99475dae6f6daedbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0cc15d1ced29bc13291cd2eb8f80997ef8d9daa2538ea1d99475dae6f6daedbb", kill_on_drop: false }`
[INFO] [stdout] 0cc15d1ced29bc13291cd2eb8f80997ef8d9daa2538ea1d99475dae6f6daedbb
[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=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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+7c3a44cf5f95fa5cf164a312bdcf845157af7093" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6f231f2398bb7dbacba35d24255b1a55e93b43af03e1b476701cb6f87ab6f8fd
[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" "6f231f2398bb7dbacba35d24255b1a55e93b43af03e1b476701cb6f87ab6f8fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.96
[INFO] [stderr]    Compiling memchr v2.4.0
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[INFO] [stderr]    Compiling holochain_json_api v0.0.23
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[INFO] [stderr]    Compiling holochain_persistence_api v0.0.18 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking utf8-ranges v1.0.4
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[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/hash.rs:143:10
[INFO] [stdout]     |
[INFO] [stdout] 143 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:284:51
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout]     | |                                                   ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:284:59
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout]     | |                                                           ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:285:50
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout]     | |                                                  ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:285:58
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout]     | |                                                          ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:289:59
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 289 | |             let link_type = REMOVED_LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout]     | |                                                           ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:289:67
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 289 | |             let link_type = REMOVED_LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout]     | |                                                                   ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:290:58
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 290 | |             let link_tag = REMOVED_LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout]     | |                                                          ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:290:66
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 290 | |             let link_tag = REMOVED_LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout]     | |                                                                  ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, error::PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:284:51
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout]     | |                                                   ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, PersistenceError>`
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:284:59
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout]     | |                                                           ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, PersistenceError>`
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:285:50
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout]     | |                                                  ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:285:58
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout]     | |                                                          ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:289:59
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 289 | |             let link_type = REMOVED_LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout]     | |                                                           ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:289:67
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 289 | |             let link_type = REMOVED_LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout]     | |                                                                   ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:290:58
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 290 | |             let link_tag = REMOVED_LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout]     | |                                                          ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]    --> src/cas/storage.rs:290:66
[INFO] [stdout]     |
[INFO] [stdout] 282 | /     fn try_from(s: &str) -> Result<Self, Self::Error> {
[INFO] [stdout] 283 | |         if LINK_REGEX.is_match(s) {
[INFO] [stdout] 284 | |             let link_type = LINK_REGEX.captures(s)?.get(1)?.as_str().to_string();
[INFO] [stdout] 285 | |             let link_tag = LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout] ...   |
[INFO] [stdout] 290 | |             let link_tag = REMOVED_LINK_REGEX.captures(s)?.get(2)?.as_str().to_string();
[INFO] [stdout]     | |                                                                  ^ use `.ok_or(...)?` to provide an error compatible with `Result<ExampleLink, PersistenceError>`
[INFO] [stdout] ...   |
[INFO] [stdout] 297 | |         }
[INFO] [stdout] 298 | |     }
[INFO] [stdout]     | |_____- this function returns a `Result`
[INFO] [stdout]     |
[INFO] [stdout]     = help: the trait `FromResidual<std::option::Option<Infallible>>` is not implemented for `Result<ExampleLink, PersistenceError>`
[INFO] [stdout]     = note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `holochain_persistence_api`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 8 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6f231f2398bb7dbacba35d24255b1a55e93b43af03e1b476701cb6f87ab6f8fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f231f2398bb7dbacba35d24255b1a55e93b43af03e1b476701cb6f87ab6f8fd", kill_on_drop: false }`
[INFO] [stdout] 6f231f2398bb7dbacba35d24255b1a55e93b43af03e1b476701cb6f87ab6f8fd