[INFO] cloning repository https://github.com/kohtoa15/clitc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kohtoa15/clitc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkohtoa15%2Fclitc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkohtoa15%2Fclitc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 172017a7d5a7493089893ab7fc8c051214f4cebd
[INFO] testing kohtoa15/clitc against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkohtoa15%2Fclitc" "/workspace/builds/worker-107/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-107/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kohtoa15/clitc on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kohtoa15/clitc
[INFO] finished tweaking git repo https://github.com/kohtoa15/clitc
[INFO] tweaked toml for git repo https://github.com/kohtoa15/clitc written to /workspace/builds/worker-107/source/Cargo.toml
[INFO] crate git repo https://github.com/kohtoa15/clitc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48e352b14f53b329efd3ba7e155649d74c898c2e734d9d5f7f3419a9082c1e08
[INFO] running `Command { std: "docker" "start" "-a" "48e352b14f53b329efd3ba7e155649d74c898c2e734d9d5f7f3419a9082c1e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48e352b14f53b329efd3ba7e155649d74c898c2e734d9d5f7f3419a9082c1e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48e352b14f53b329efd3ba7e155649d74c898c2e734d9d5f7f3419a9082c1e08", kill_on_drop: false }`
[INFO] [stdout] 48e352b14f53b329efd3ba7e155649d74c898c2e734d9d5f7f3419a9082c1e08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ffd3a6cb5a448b750e422d8950a13d58e9e5e72ee9635308150d6d82452fd43c
[INFO] running `Command { std: "docker" "start" "-a" "ffd3a6cb5a448b750e422d8950a13d58e9e5e72ee9635308150d6d82452fd43c", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling serde_json v1.0.41
[INFO] [stderr]    Compiling clitc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/params.rs:156:57
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stdout]     |                                                         ^                           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 156 -     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stdout] 156 +     pub fn match_with(&self, args: &mut Vec<String>) -> HashMap<String, ParamValue> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/params.rs:333:33
[INFO] [stdout]     |
[INFO] [stdout] 333 |         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stdout]     |                                 ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 333 -         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stdout] 333 +         where F: Fn(&'a str) -> Vec<String>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fs::File`, `time::Instant`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     time::Instant,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 9 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CliParameters`, `ParamValue`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     ParamValue,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 13 |     CliParameters,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EventHandler`, `Event`, `WhitespaceSplitter`
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     WhitespaceSplitter,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 17 |     EventHandler,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 18 |     Event,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/params.rs:53:54
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stdout]    |                                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 -     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stdout] 53 +     pub fn from(s: &str) -> Result<SubParamType, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/params.rs:77:53
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stdout]    |                                                     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 77 -     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stdout] 77 +     pub fn from(val: Value) -> Result<SubParam, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:129:50
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stdout]     |                                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 129 -     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stdout] 129 +     pub fn from(val: Value) -> Result<Param, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:190:54
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 190 -     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 190 +     fn from(val: Value) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:203:69
[INFO] [stdout]     |
[INFO] [stdout] 203 |     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 203 -     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 203 +     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:208:72
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 208 -     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 208 +     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:213:67
[INFO] [stdout]     |
[INFO] [stdout] 213 |     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stdout]     |                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 213 -     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stdout] 213 +     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<dyn Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/params.rs:156:57
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stdout]     |                                                         ^                           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 156 -     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stdout] 156 +     pub fn match_with(&self, args: &mut Vec<String>) -> HashMap<String, ParamValue> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/params.rs:333:33
[INFO] [stdout]     |
[INFO] [stdout] 333 |         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stdout]     |                                 ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 333 -         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stdout] 333 +         where F: Fn(&'a str) -> Vec<String>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/params.rs:53:54
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stdout]    |                                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 -     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stdout] 53 +     pub fn from(s: &str) -> Result<SubParamType, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/params.rs:77:53
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stdout]    |                                                     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 77 -     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stdout] 77 +     pub fn from(val: Value) -> Result<SubParam, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:129:50
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stdout]     |                                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 129 -     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stdout] 129 +     pub fn from(val: Value) -> Result<Param, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:190:54
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 190 -     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 190 +     fn from(val: Value) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:203:69
[INFO] [stdout]     |
[INFO] [stdout] 203 |     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 203 -     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 203 +     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:208:72
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 208 -     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 208 +     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:213:67
[INFO] [stdout]     |
[INFO] [stdout] 213 |     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stdout]     |                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 213 -     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stdout] 213 +     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<dyn Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `events`
[INFO] [stdout]    --> src/main.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |     let events = evt_handler.disattach();
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_events`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Emit`
[INFO] [stdout]   --> src/events.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Emit(EmitHandle<E>, Rc<EmitFn<T, E>>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_slice`
[INFO] [stdout]    --> src/params.rs:208:12
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.60s
[INFO] running `Command { std: "docker" "inspect" "ffd3a6cb5a448b750e422d8950a13d58e9e5e72ee9635308150d6d82452fd43c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffd3a6cb5a448b750e422d8950a13d58e9e5e72ee9635308150d6d82452fd43c", kill_on_drop: false }`
[INFO] [stdout] ffd3a6cb5a448b750e422d8950a13d58e9e5e72ee9635308150d6d82452fd43c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a127602a962226d20eea7f24d36a44d41ed60ee3c26a3324f1b7fae9fabe1da1
[INFO] running `Command { std: "docker" "start" "-a" "a127602a962226d20eea7f24d36a44d41ed60ee3c26a3324f1b7fae9fabe1da1", kill_on_drop: false }`
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/params.rs:156:57
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stdout]     |                                                         ^                           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 156 -     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stdout] 156 +     pub fn match_with(&self, args: &mut Vec<String>) -> HashMap<String, ParamValue> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/params.rs:333:33
[INFO] [stdout]     |
[INFO] [stdout] 333 |         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stdout]     |                                 ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 333 -         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stdout] 333 +         where F: Fn(&'a str) -> Vec<String>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fs::File`, `time::Instant`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     time::Instant,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 9 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CliParameters`, `ParamValue`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     ParamValue,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 13 |     CliParameters,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling clitc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `EventHandler`, `Event`, `WhitespaceSplitter`
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     WhitespaceSplitter,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 17 |     EventHandler,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 18 |     Event,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/params.rs:53:54
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stdout]    |                                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 -     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stdout] 53 +     pub fn from(s: &str) -> Result<SubParamType, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/params.rs:77:53
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stdout]    |                                                     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 77 -     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stdout] 77 +     pub fn from(val: Value) -> Result<SubParam, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:129:50
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stdout]     |                                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 129 -     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stdout] 129 +     pub fn from(val: Value) -> Result<Param, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:190:54
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 190 -     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 190 +     fn from(val: Value) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:203:69
[INFO] [stdout]     |
[INFO] [stdout] 203 |     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 203 -     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 203 +     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:208:72
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 208 -     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 208 +     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:213:67
[INFO] [stdout]     |
[INFO] [stdout] 213 |     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stdout]     |                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 213 -     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stdout] 213 +     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<dyn Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/params.rs:156:57
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stdout]     |                                                         ^                           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 156 -     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stdout] 156 +     pub fn match_with(&self, args: &mut Vec<String>) -> HashMap<String, ParamValue> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/params.rs:333:33
[INFO] [stdout]     |
[INFO] [stdout] 333 |         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stdout]     |                                 ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 333 -         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stdout] 333 +         where F: Fn(&'a str) -> Vec<String>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/params.rs:53:54
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stdout]    |                                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 -     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stdout] 53 +     pub fn from(s: &str) -> Result<SubParamType, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/params.rs:77:53
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stdout]    |                                                     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 77 -     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stdout] 77 +     pub fn from(val: Value) -> Result<SubParam, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:129:50
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stdout]     |                                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 129 -     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stdout] 129 +     pub fn from(val: Value) -> Result<Param, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:190:54
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 190 -     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 190 +     fn from(val: Value) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:203:69
[INFO] [stdout]     |
[INFO] [stdout] 203 |     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 203 -     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 203 +     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:208:72
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 208 -     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 208 +     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:213:67
[INFO] [stdout]     |
[INFO] [stdout] 213 |     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stdout]     |                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 213 -     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stdout] 213 +     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<dyn Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/params.rs:156:57
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stdout]     |                                                         ^                           ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 156 -     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stdout] 156 +     pub fn match_with(&self, args: &mut Vec<String>) -> HashMap<String, ParamValue> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/params.rs:333:33
[INFO] [stdout]     |
[INFO] [stdout] 333 |         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stdout]     |                                 ^           ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 333 -         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stdout] 333 +         where F: Fn(&'a str) -> Vec<String>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `fs::File`, `time::Instant`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     time::Instant,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 9 |     fs::File,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CliParameters`, `ParamValue`
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     ParamValue,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 13 |     CliParameters,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `EventHandler`, `Event`, `WhitespaceSplitter`
[INFO] [stdout]   --> src/lib.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     WhitespaceSplitter,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 17 |     EventHandler,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 18 |     Event,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/params.rs:53:54
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stdout]    |                                                      ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 53 -     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stdout] 53 +     pub fn from(s: &str) -> Result<SubParamType, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/params.rs:77:53
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stdout]    |                                                     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 77 -     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stdout] 77 +     pub fn from(val: Value) -> Result<SubParam, Box<dyn Error>> {
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:129:50
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stdout]     |                                                  ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 129 -     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stdout] 129 +     pub fn from(val: Value) -> Result<Param, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:190:54
[INFO] [stdout]     |
[INFO] [stdout] 190 |     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                      ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 190 -     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 190 +     fn from(val: Value) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:203:69
[INFO] [stdout]     |
[INFO] [stdout] 203 |     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                                     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 203 -     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 203 +     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:208:72
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |                                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 208 -     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout] 208 +     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/params.rs:213:67
[INFO] [stdout]     |
[INFO] [stdout] 213 |     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stdout]     |                                                                   ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 213 -     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stdout] 213 +     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<dyn Error>>
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `events`
[INFO] [stdout]    --> src/main.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |     let events = evt_handler.disattach();
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_events`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Emit`
[INFO] [stdout]   --> src/events.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Emit(EmitHandle<E>, Rc<EmitFn<T, E>>),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_slice`
[INFO] [stdout]    --> src/params.rs:208:12
[INFO] [stdout]     |
[INFO] [stdout] 208 |     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "a127602a962226d20eea7f24d36a44d41ed60ee3c26a3324f1b7fae9fabe1da1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a127602a962226d20eea7f24d36a44d41ed60ee3c26a3324f1b7fae9fabe1da1", kill_on_drop: false }`
[INFO] [stdout] a127602a962226d20eea7f24d36a44d41ed60ee3c26a3324f1b7fae9fabe1da1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 65c784da4ee6d084d9f75753ad6f0c409227133452c9de77d563c40066f3e63d
[INFO] running `Command { std: "docker" "start" "-a" "65c784da4ee6d084d9f75753ad6f0c409227133452c9de77d563c40066f3e63d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/params.rs:156:57
[INFO] [stderr]     |
[INFO] [stderr] 156 |     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stderr]     |                                                         ^                           ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 156 -     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stderr] 156 +     pub fn match_with(&self, args: &mut Vec<String>) -> HashMap<String, ParamValue> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/params.rs:333:33
[INFO] [stderr]     |
[INFO] [stderr] 333 |         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stderr]     |                                 ^           ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 333 -         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stderr] 333 +         where F: Fn(&'a str) -> Vec<String>
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `fs::File`, `time::Instant`
[INFO] [stderr]  --> src/lib.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     time::Instant,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 9 |     fs::File,
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CliParameters`, `ParamValue`
[INFO] [stderr]   --> src/lib.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     ParamValue,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 13 |     CliParameters,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `EventHandler`, `Event`, `WhitespaceSplitter`
[INFO] [stderr]   --> src/lib.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     WhitespaceSplitter,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 17 |     EventHandler,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 18 |     Event,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/params.rs:53:54
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stderr]    |                                                      ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 53 -     pub fn from(s: &str) -> Result<SubParamType, Box<Error>> {
[INFO] [stderr] 53 +     pub fn from(s: &str) -> Result<SubParamType, Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/params.rs:77:53
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stderr]    |                                                     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 77 -     pub fn from(val: Value) -> Result<SubParam, Box<Error>> {
[INFO] [stderr] 77 +     pub fn from(val: Value) -> Result<SubParam, Box<dyn Error>> {
[INFO] [stderr]    | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/params.rs:129:50
[INFO] [stderr]     |
[INFO] [stderr] 129 |     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stderr]     |                                                  ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 129 -     pub fn from(val: Value) -> Result<Param, Box<Error>> {
[INFO] [stderr] 129 +     pub fn from(val: Value) -> Result<Param, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/params.rs:190:54
[INFO] [stderr]     |
[INFO] [stderr] 190 |     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stderr]     |                                                      ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 190 -     fn from(val: Value) -> Result<CliParameters, Box<Error>> {
[INFO] [stderr] 190 +     fn from(val: Value) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/params.rs:203:69
[INFO] [stderr]     |
[INFO] [stderr] 203 |     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stderr]     |                                                                     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 203 -     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<Error>> {
[INFO] [stderr] 203 +     pub fn from_str<'a>(data: &'a str) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/params.rs:208:72
[INFO] [stderr]     |
[INFO] [stderr] 208 |     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stderr]     |                                                                        ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 208 -     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stderr] 208 +     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<dyn Error>> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/params.rs:213:67
[INFO] [stderr]     |
[INFO] [stderr] 213 |     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stderr]     |                                                                   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 213 -     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<Error>>
[INFO] [stderr] 213 +     pub fn from_reader<R>(reader: R) -> Result<CliParameters, Box<dyn Error>>
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `clitc` (lib) generated 12 warnings
[INFO] [stderr] warning: `clitc` (lib test) generated 12 warnings (12 duplicates)
[INFO] [stderr] warning: unused variable: `events`
[INFO] [stderr]    --> src/main.rs:158:9
[INFO] [stderr]     |
[INFO] [stderr] 158 |     let events = evt_handler.disattach();
[INFO] [stderr]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_events`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Emit`
[INFO] [stderr]   --> src/events.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Emit(EmitHandle<E>, Rc<EmitFn<T, E>>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_slice`
[INFO] [stderr]    --> src/params.rs:208:12
[INFO] [stderr]     |
[INFO] [stderr] 208 |     pub fn from_slice<'a>(data: &'a [u8]) -> Result<CliParameters, Box<Error>> {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `clitc` (bin "clitc" test) generated 12 warnings (9 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 6.33s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/clitc-c35cbfd63704d88f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/clitc-5e61a99993fdf1c6)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests clitc
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/params.rs:156:57
[INFO] [stderr]     |
[INFO] [stderr] 156 |     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stderr]     |                                                         ^                           ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 156 -     pub fn match_with(&self, args: &mut Vec<String>) -> (HashMap<String, ParamValue>) {
[INFO] [stderr] 156 +     pub fn match_with(&self, args: &mut Vec<String>) -> HashMap<String, ParamValue> {
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> /opt/rustwide/workdir/src/params.rs:333:33
[INFO] [stderr]     |
[INFO] [stderr] 333 |         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stderr]     |                                 ^           ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 333 -         where F: Fn(&'a str) -> (Vec<String>)
[INFO] [stderr] 333 +         where F: Fn(&'a str) -> Vec<String>
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "65c784da4ee6d084d9f75753ad6f0c409227133452c9de77d563c40066f3e63d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65c784da4ee6d084d9f75753ad6f0c409227133452c9de77d563c40066f3e63d", kill_on_drop: false }`
[INFO] [stdout] 65c784da4ee6d084d9f75753ad6f0c409227133452c9de77d563c40066f3e63d