[INFO] fetching crate clementine 0.0.1...
[INFO] checking clementine-0.0.1 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate clementine 0.0.1 into /workspace/builds/worker-58/source
[INFO] validating manifest of crates.io crate clementine 0.0.1 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate clementine 0.0.1
[INFO] finished tweaking crates.io crate clementine 0.0.1
[INFO] tweaked toml for crates.io crate clementine 0.0.1 written to /workspace/builds/worker-58/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92e33664ca697c2e4adc6471c84169e3cf52782ff1492461c871ed974ebc8ee7
[INFO] running `Command { std: "docker" "start" "-a" "92e33664ca697c2e4adc6471c84169e3cf52782ff1492461c871ed974ebc8ee7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92e33664ca697c2e4adc6471c84169e3cf52782ff1492461c871ed974ebc8ee7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92e33664ca697c2e4adc6471c84169e3cf52782ff1492461c871ed974ebc8ee7", kill_on_drop: false }`
[INFO] [stdout] 92e33664ca697c2e4adc6471c84169e3cf52782ff1492461c871ed974ebc8ee7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d903f94aae309131b0c0cd07255bef7025c556783e0ebe4983651e3adf01529b
[INFO] running `Command { std: "docker" "start" "-a" "d903f94aae309131b0c0cd07255bef7025c556783e0ebe4983651e3adf01529b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking serde_json v0.9.10
[INFO] [stderr]     Checking clementine v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]    --> src/error.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl From<io::CharsError> for Error {
[INFO] [stdout]     |               ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]    --> src/error.rs:102:20
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn from(_: io::CharsError) -> Error {
[INFO] [stdout]     |                    ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(io)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database.rs:31:36
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut persist_store: Box<Persistable> = match config.persist_type {
[INFO] [stdout]    |                                    ^^^^^^^^^^^ help: use `dyn`: `dyn Persistable`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database.rs:45:22
[INFO] [stdout]    |
[INFO] [stdout] 45 |         where F: Fn(&ReadTransaction<K>) -> Result<()>,
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadTransaction<K>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database.rs:56:26
[INFO] [stdout]    |
[INFO] [stdout] 56 |         where F: Fn(&mut WriteTransaction<K>) -> Result<()>,
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn WriteTransaction<K>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transaction.rs:39:32
[INFO] [stdout]    |
[INFO] [stdout] 39 |     persist_store: RefCell<Box<Persistable>>,
[INFO] [stdout]    |                                ^^^^^^^^^^^ help: use `dyn`: `dyn Persistable`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transaction.rs:46:60
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn new(store: BTreeMap<String, Data>, persist: Box<Persistable>) -> Transaction {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^ help: use `dyn`: `dyn Persistable`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/persist.rs:29:23
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn set(&mut self, String, Data) -> Result<()>;
[INFO] [stdout]    |                       ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: String`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]    --> src/error.rs:101:15
[INFO] [stdout]     |
[INFO] [stdout] 101 | impl From<io::CharsError> for Error {
[INFO] [stdout]     |               ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `CharsError` in module `io`
[INFO] [stdout]    --> src/error.rs:102:20
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn from(_: io::CharsError) -> Error {
[INFO] [stdout]     |                    ^^^^^^^^^^ not found in `io`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(io)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database.rs:31:36
[INFO] [stdout]    |
[INFO] [stdout] 31 |         let mut persist_store: Box<Persistable> = match config.persist_type {
[INFO] [stdout]    |                                    ^^^^^^^^^^^ help: use `dyn`: `dyn Persistable`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database.rs:45:22
[INFO] [stdout]    |
[INFO] [stdout] 45 |         where F: Fn(&ReadTransaction<K>) -> Result<()>,
[INFO] [stdout]    |                      ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ReadTransaction<K>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/database.rs:56:26
[INFO] [stdout]    |
[INFO] [stdout] 56 |         where F: Fn(&mut WriteTransaction<K>) -> Result<()>,
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn WriteTransaction<K>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transaction.rs:39:32
[INFO] [stdout]    |
[INFO] [stdout] 39 |     persist_store: RefCell<Box<Persistable>>,
[INFO] [stdout]    |                                ^^^^^^^^^^^ help: use `dyn`: `dyn Persistable`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transaction.rs:46:60
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn new(store: BTreeMap<String, Data>, persist: Box<Persistable>) -> Transaction {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^ help: use `dyn`: `dyn Persistable`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/persist.rs:29:23
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn set(&mut self, String, Data) -> Result<()>;
[INFO] [stdout]    |                       ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: String`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/persist.rs:29:31
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn set(&mut self, String, Data) -> Result<()>;
[INFO] [stdout]    |                               ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Data`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/persist.rs:30:26
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn remove(&mut self, String) -> Result<()>;
[INFO] [stdout]    |                          ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: String`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/persist.rs:29:31
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn set(&mut self, String, Data) -> Result<()>;
[INFO] [stdout]    |                               ^^^^ help: try naming the parameter or explicitly ignoring it: `_: Data`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]   --> src/persist.rs:30:26
[INFO] [stdout]    |
[INFO] [stdout] 30 |     fn remove(&mut self, String) -> Result<()>;
[INFO] [stdout]    |                          ^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: String`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/database.rs:48:40
[INFO] [stdout]     |
[INFO] [stdout] 48  |         let store = self.txn_mut.read()?;
[INFO] [stdout]     |                                        ^ cannot infer type for struct `error::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `error::Error: From<PoisonError<RwLockReadGuard<'_, transaction::Transaction>>>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<std::result::Result<Infallible, PoisonError<RwLockReadGuard<'_, transaction::Transaction>>>>` for `std::result::Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/database.rs:59:45
[INFO] [stdout]     |
[INFO] [stdout] 59  |         let mut store = self.txn_mut.write()?;
[INFO] [stdout]     |                                             ^ cannot infer type for struct `error::Error`
[INFO] [stdout] ...
[INFO] [stdout] 69  |             store.save()?;
[INFO] [stdout]     |             ------------ this method call resolves to `std::result::Result<(), error::Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `error::Error: From<PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<std::result::Result<Infallible, PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>>` for `std::result::Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/database.rs:77:29
[INFO] [stdout]     |
[INFO] [stdout] 77  |         self.txn_mut.write()?.save()?;
[INFO] [stdout]     |         --------------------^-------
[INFO] [stdout]     |         |                   |
[INFO] [stdout]     |         |                   cannot infer type for struct `error::Error`
[INFO] [stdout]     |         this method call resolves to `std::result::Result<(), error::Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `error::Error: From<PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<std::result::Result<Infallible, PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>>` for `std::result::Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/database.rs:86:37
[INFO] [stdout]     |
[INFO] [stdout] 86  |         let _ = self.txn_mut.write()?;
[INFO] [stdout]     |                                     ^ cannot infer type for struct `error::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `error::Error: From<PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<std::result::Result<Infallible, PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>>` for `std::result::Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/database.rs:48:40
[INFO] [stdout]     |
[INFO] [stdout] 48  |         let store = self.txn_mut.read()?;
[INFO] [stdout]     |                                        ^ cannot infer type for struct `error::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `error::Error: From<PoisonError<RwLockReadGuard<'_, transaction::Transaction>>>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<std::result::Result<Infallible, PoisonError<RwLockReadGuard<'_, transaction::Transaction>>>>` for `std::result::Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/database.rs:59:45
[INFO] [stdout]     |
[INFO] [stdout] 59  |         let mut store = self.txn_mut.write()?;
[INFO] [stdout]     |                                             ^ cannot infer type for struct `error::Error`
[INFO] [stdout] ...
[INFO] [stdout] 69  |             store.save()?;
[INFO] [stdout]     |             ------------ this method call resolves to `std::result::Result<(), error::Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `error::Error: From<PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<std::result::Result<Infallible, PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>>` for `std::result::Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/database.rs:77:29
[INFO] [stdout]     |
[INFO] [stdout] 77  |         self.txn_mut.write()?.save()?;
[INFO] [stdout]     |         --------------------^-------
[INFO] [stdout]     |         |                   |
[INFO] [stdout]     |         |                   cannot infer type for struct `error::Error`
[INFO] [stdout]     |         this method call resolves to `std::result::Result<(), error::Error>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `error::Error: From<PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<std::result::Result<Infallible, PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>>` for `std::result::Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/database.rs:86:37
[INFO] [stdout]     |
[INFO] [stdout] 86  |         let _ = self.txn_mut.write()?;
[INFO] [stdout]     |                                     ^ cannot infer type for struct `error::Error`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `error::Error: From<PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>`
[INFO] [stdout]     = note: required because of the requirements on the impl of `FromResidual<std::result::Result<Infallible, PoisonError<RwLockWriteGuard<'_, transaction::Transaction>>>>` for `std::result::Result<(), error::Error>`
[INFO] [stdout] note: required by `from_residual`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `chars` found for struct `File` in the current scope
[INFO] [stdout]   --> src/persist.rs:98:47
[INFO] [stdout]    |
[INFO] [stdout] 98 |         for ch in fs::File::open(&self.path)?.chars() {
[INFO] [stdout]    |                                               ^^^^^ method not found in `File`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/persist.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Write, Read};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors; 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0283, E0412, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `chars` found for struct `File` in the current scope
[INFO] [stdout]   --> src/persist.rs:98:47
[INFO] [stdout]    |
[INFO] [stdout] 98 |         for ch in fs::File::open(&self.path)?.chars() {
[INFO] [stdout]    |                                               ^^^^^ method not found in `File`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `clementine` due to 9 previous errors; 10 warnings emitted
[INFO] [stdout] warning: unused import: `Read`
[INFO] [stdout]  --> src/persist.rs:3:22
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::io::{Write, Read};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 8 previous errors; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0283, E0412, E0554, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d903f94aae309131b0c0cd07255bef7025c556783e0ebe4983651e3adf01529b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d903f94aae309131b0c0cd07255bef7025c556783e0ebe4983651e3adf01529b", kill_on_drop: false }`
[INFO] [stdout] d903f94aae309131b0c0cd07255bef7025c556783e0ebe4983651e3adf01529b
