[INFO] cloning repository https://github.com/Occsy/concept_db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Occsy/concept_db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOccsy%2Fconcept_db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOccsy%2Fconcept_db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6d158d643c5711a5b69a26a553a97fe6ffa7563f
[INFO] fixing Occsy/concept_db against try#622891a4e29178280638a6b63a8908bde2c0c854+cargoflags=-Zfix-edition=start=2015 for pr-157817-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOccsy%2Fconcept_db" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Occsy/concept_db
[INFO] finished tweaking git repo https://github.com/Occsy/concept_db
[INFO] tweaked toml for git repo https://github.com/Occsy/concept_db written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Occsy/concept_db on toolchain 622891a4e29178280638a6b63a8908bde2c0c854
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Occsy/concept_db 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" "+622891a4e29178280638a6b63a8908bde2c0c854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 232d014017b7dc912f6d5230e5554cfbf6848e21652d33692190749c337cceb5
[INFO] running `Command { std: "docker" "start" "232d014017b7dc912f6d5230e5554cfbf6848e21652d33692190749c337cceb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "232d014017b7dc912f6d5230e5554cfbf6848e21652d33692190749c337cceb5" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "232d014017b7dc912f6d5230e5554cfbf6848e21652d33692190749c337cceb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=" "-e" "RUSTDOCFLAGS=" "-w" "/opt/rustwide/workdir" "--user" "0:0" "232d014017b7dc912f6d5230e5554cfbf6848e21652d33692190749c337cceb5" "/opt/rustwide/cargo-home/bin/cargo" "+622891a4e29178280638a6b63a8908bde2c0c854" "fix" "--allow-no-vcs" "--allow-dirty" "--frozen" "--all" "--all-targets" "--message-format=json" "-Zfix-edition=start=2015", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.44
[INFO] [stderr]     Checking serde_json v1.0.149
[INFO] [stderr]    Compiling syn v2.0.116
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking concept_db v0.1.247 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `Collection<T>: serde::Serialize` is not satisfied
[INFO] [stdout]    --> src/lib.rs:760:92
[INFO] [stdout]     |
[INFO] [stdout] 760 |             serde_json::from_value::<HashMap<String, Option<String>>>(serde_json::to_value(self.clone())?).map_err(|_| {
[INFO] [stdout]     |                                                                       -------------------- ^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |                                                                       |
[INFO] [stdout]     |                                                                       required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `Serialize` is not implemented for `Collection<T>`
[INFO] [stdout]    --> src/lib.rs:658:5
[INFO] [stdout]     |
[INFO] [stdout] 658 |     pub struct Collection<T: Serialize + DeserializeOwned + Sized + Clone + Debug + Hash + Default> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: for local types consider adding `#[derive(serde::Serialize)]` to your `Collection<T>` type
[INFO] [stdout]     = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]     = help: the following other types implement trait `Serialize`:
[INFO] [stdout]               &'a T
[INFO] [stdout]               &'a mut T
[INFO] [stdout]               ()
[INFO] [stdout]               (T,)
[INFO] [stdout]               (T0, T1)
[INFO] [stdout]               (T0, T1, T2)
[INFO] [stdout]               (T0, T1, T2, T3)
[INFO] [stdout]               (T0, T1, T2, T3, T4)
[INFO] [stdout]             and 133 others
[INFO] [stdout] note: required by a bound in `to_value`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.149/src/value/mod.rs:997:8
[INFO] [stdout]     |
[INFO] [stdout] 995 | pub fn to_value<T>(value: T) -> Result<Value, Error>
[INFO] [stdout]     |        -------- required by a bound in this function
[INFO] [stdout] 996 | where
[INFO] [stdout] 997 |     T: Serialize,
[INFO] [stdout]     |        ^^^^^^^^^ required by this bound in `to_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Collection<T>: serde::Serialize` is not satisfied
[INFO] [stdout]    --> src/lib.rs:760:92
[INFO] [stdout]     |
[INFO] [stdout] 760 |             serde_json::from_value::<HashMap<String, Option<String>>>(serde_json::to_value(self.clone())?).map_err(|_| {
[INFO] [stdout]     |                                                                       -------------------- ^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |                                                                       |
[INFO] [stdout]     |                                                                       required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `Serialize` is not implemented for `Collection<T>`
[INFO] [stdout]    --> src/lib.rs:658:5
[INFO] [stdout]     |
[INFO] [stdout] 658 |     pub struct Collection<T: Serialize + DeserializeOwned + Sized + Clone + Debug + Hash + Default> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: for local types consider adding `#[derive(serde::Serialize)]` to your `Collection<T>` type
[INFO] [stdout]     = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]     = help: the following other types implement trait `Serialize`:
[INFO] [stdout]               &'a T
[INFO] [stdout]               &'a mut T
[INFO] [stdout]               ()
[INFO] [stdout]               (T,)
[INFO] [stdout]               (T0, T1)
[INFO] [stdout]               (T0, T1, T2)
[INFO] [stdout]               (T0, T1, T2, T3)
[INFO] [stdout]               (T0, T1, T2, T3, T4)
[INFO] [stdout]             and 133 others
[INFO] [stdout] note: required by a bound in `to_value`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.149/src/value/mod.rs:997:8
[INFO] [stdout]     |
[INFO] [stdout] 995 | pub fn to_value<T>(value: T) -> Result<Value, Error>
[INFO] [stdout]     |        -------- required by a bound in this function
[INFO] [stdout] 996 | where
[INFO] [stdout] 997 |     T: Serialize,
[INFO] [stdout]     |        ^^^^^^^^^ required by this bound in `to_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `?` couldn't convert the error to `TErrors`
[INFO] [stdout]    --> src/lib.rs:760:105
[INFO] [stdout]     |
[INFO] [stdout] 760 |             serde_json::from_value::<HashMap<String, Option<String>>>(serde_json::to_value(self.clone())?).map_err(|_| {
[INFO] [stdout]     |                                                                       ----------------------------------^ the trait `From<serde_json::Error>` is not implemented for `TErrors`
[INFO] [stdout]     |                                                                       |
[INFO] [stdout]     |                                                                       this can't be annotated with `?` because it has type `Result<_, serde_json::Error>`
[INFO] [stdout]     |
[INFO] [stdout] note: `TErrors` needs to implement `From<serde_json::Error>`
[INFO] [stdout]    --> src/lib.rs:15:5
[INFO] [stdout]     |
[INFO] [stdout]  15 |     pub enum TErrors {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `?` couldn't convert the error to `TErrors`
[INFO] [stdout]    --> src/lib.rs:760:105
[INFO] [stdout]     |
[INFO] [stdout] 760 |             serde_json::from_value::<HashMap<String, Option<String>>>(serde_json::to_value(self.clone())?).map_err(|_| {
[INFO] [stdout]     |                                                                       ----------------------------------^ the trait `From<serde_json::Error>` is not implemented for `TErrors`
[INFO] [stdout]     |                                                                       |
[INFO] [stdout]     |                                                                       this can't be annotated with `?` because it has type `Result<_, serde_json::Error>`
[INFO] [stdout]     |
[INFO] [stdout] note: `TErrors` needs to implement `From<serde_json::Error>`
[INFO] [stdout]    --> src/lib.rs:15:5
[INFO] [stdout]     |
[INFO] [stdout]  15 |     pub enum TErrors {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Collection<T>: serde::Serialize` is not satisfied
[INFO] [stdout]    --> src/lib.rs:766:89
[INFO] [stdout]     |
[INFO] [stdout] 766 |             serde_json::from_value::<HashMap<String, Vec<String>>>(serde_json::to_value(self.clone())?).map_err(|_| {
[INFO] [stdout]     |                                                                    -------------------- ^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |                                                                    |
[INFO] [stdout]     |                                                                    required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `Serialize` is not implemented for `Collection<T>`
[INFO] [stdout]    --> src/lib.rs:658:5
[INFO] [stdout]     |
[INFO] [stdout] 658 |     pub struct Collection<T: Serialize + DeserializeOwned + Sized + Clone + Debug + Hash + Default> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: for local types consider adding `#[derive(serde::Serialize)]` to your `Collection<T>` type
[INFO] [stdout]     = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]     = help: the following other types implement trait `Serialize`:
[INFO] [stdout]               &'a T
[INFO] [stdout]               &'a mut T
[INFO] [stdout]               ()
[INFO] [stdout]               (T,)
[INFO] [stdout]               (T0, T1)
[INFO] [stdout]               (T0, T1, T2)
[INFO] [stdout]               (T0, T1, T2, T3)
[INFO] [stdout]               (T0, T1, T2, T3, T4)
[INFO] [stdout]             and 133 others
[INFO] [stdout] note: required by a bound in `to_value`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.149/src/value/mod.rs:997:8
[INFO] [stdout]     |
[INFO] [stdout] 995 | pub fn to_value<T>(value: T) -> Result<Value, Error>
[INFO] [stdout]     |        -------- required by a bound in this function
[INFO] [stdout] 996 | where
[INFO] [stdout] 997 |     T: Serialize,
[INFO] [stdout]     |        ^^^^^^^^^ required by this bound in `to_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `?` couldn't convert the error to `TErrors`
[INFO] [stdout]    --> src/lib.rs:766:102
[INFO] [stdout]     |
[INFO] [stdout] 766 |             serde_json::from_value::<HashMap<String, Vec<String>>>(serde_json::to_value(self.clone())?).map_err(|_| {
[INFO] [stdout]     |                                                                    ----------------------------------^ the trait `From<serde_json::Error>` is not implemented for `TErrors`
[INFO] [stdout]     |                                                                    |
[INFO] [stdout]     |                                                                    this can't be annotated with `?` because it has type `Result<_, serde_json::Error>`
[INFO] [stdout]     |
[INFO] [stdout] note: `TErrors` needs to implement `From<serde_json::Error>`
[INFO] [stdout]    --> src/lib.rs:15:5
[INFO] [stdout]     |
[INFO] [stdout]  15 |     pub enum TErrors {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Collection<T>: serde::Serialize` is not satisfied
[INFO] [stdout]    --> src/lib.rs:766:89
[INFO] [stdout]     |
[INFO] [stdout] 766 |             serde_json::from_value::<HashMap<String, Vec<String>>>(serde_json::to_value(self.clone())?).map_err(|_| {
[INFO] [stdout]     |                                                                    -------------------- ^^^^^^^^^^^^ unsatisfied trait bound
[INFO] [stdout]     |                                                                    |
[INFO] [stdout]     |                                                                    required by a bound introduced by this call
[INFO] [stdout]     |
[INFO] [stdout] help: the trait `Serialize` is not implemented for `Collection<T>`
[INFO] [stdout]    --> src/lib.rs:658:5
[INFO] [stdout]     |
[INFO] [stdout] 658 |     pub struct Collection<T: Serialize + DeserializeOwned + Sized + Clone + Debug + Hash + Default> {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: for local types consider adding `#[derive(serde::Serialize)]` to your `Collection<T>` type
[INFO] [stdout]     = note: for types from other crates check whether the crate offers a `serde` feature flag
[INFO] [stdout]     = help: the following other types implement trait `Serialize`:
[INFO] [stdout]               &'a T
[INFO] [stdout]               &'a mut T
[INFO] [stdout]               ()
[INFO] [stdout]               (T,)
[INFO] [stdout]               (T0, T1)
[INFO] [stdout]               (T0, T1, T2)
[INFO] [stdout]               (T0, T1, T2, T3)
[INFO] [stdout]               (T0, T1, T2, T3, T4)
[INFO] [stdout]             and 133 others
[INFO] [stdout] note: required by a bound in `to_value`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/serde_json-1.0.149/src/value/mod.rs:997:8
[INFO] [stdout]     |
[INFO] [stdout] 995 | pub fn to_value<T>(value: T) -> Result<Value, Error>
[INFO] [stdout]     |        -------- required by a bound in this function
[INFO] [stdout] 996 | where
[INFO] [stdout] 997 |     T: Serialize,
[INFO] [stdout]     |        ^^^^^^^^^ required by this bound in `to_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: `?` couldn't convert the error to `TErrors`
[INFO] [stdout]    --> src/lib.rs:766:102
[INFO] [stdout]     |
[INFO] [stdout] 766 |             serde_json::from_value::<HashMap<String, Vec<String>>>(serde_json::to_value(self.clone())?).map_err(|_| {
[INFO] [stdout]     |                                                                    ----------------------------------^ the trait `From<serde_json::Error>` is not implemented for `TErrors`
[INFO] [stdout]     |                                                                    |
[INFO] [stdout]     |                                                                    this can't be annotated with `?` because it has type `Result<_, serde_json::Error>`
[INFO] [stdout]     |
[INFO] [stdout] note: `TErrors` needs to implement `From<serde_json::Error>`
[INFO] [stdout]    --> src/lib.rs:15:5
[INFO] [stdout]     |
[INFO] [stdout]  15 |     pub enum TErrors {
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:772:50
[INFO] [stdout]     |
[INFO] [stdout] 772 |             let key = self.to_hash_vec()?.keys().collect()[0]; 
[INFO] [stdout]     |                                                  ^^^^^^^ cannot infer type of the type parameter `B` declared on the method `collect`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic argument
[INFO] [stdout]     |
[INFO] [stdout] 772 |             let key = self.to_hash_vec()?.keys().collect::<Vec<_>>()[0]; 
[INFO] [stdout]     |                                                         ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:772:50
[INFO] [stdout]     |
[INFO] [stdout] 772 |             let key = self.to_hash_vec()?.keys().collect()[0]; 
[INFO] [stdout]     |                                                  ^^^^^^^ cannot infer type of the type parameter `B` declared on the method `collect`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic argument
[INFO] [stdout]     |
[INFO] [stdout] 772 |             let key = self.to_hash_vec()?.keys().collect::<Vec<_>>()[0]; 
[INFO] [stdout]     |                                                         ++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0282.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0282.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `concept_db` (lib) due to 5 previous errors
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `concept_db` (lib test) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "232d014017b7dc912f6d5230e5554cfbf6848e21652d33692190749c337cceb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "232d014017b7dc912f6d5230e5554cfbf6848e21652d33692190749c337cceb5", kill_on_drop: false }`
[INFO] [stdout] 232d014017b7dc912f6d5230e5554cfbf6848e21652d33692190749c337cceb5
