[INFO] fetching crate args 2.2.0...
[INFO] checking args-2.2.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate args 2.2.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate args 2.2.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate args 2.2.0
[INFO] finished tweaking crates.io crate args 2.2.0
[INFO] tweaked toml for crates.io crate args 2.2.0 written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 98006fe2c458cb839b1f9c45a86d365ad30fb383090385bc38a05bf55af1ce9a
[INFO] running `Command { std: "docker" "start" "-a" "98006fe2c458cb839b1f9c45a86d365ad30fb383090385bc38a05bf55af1ce9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "98006fe2c458cb839b1f9c45a86d365ad30fb383090385bc38a05bf55af1ce9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98006fe2c458cb839b1f9c45a86d365ad30fb383090385bc38a05bf55af1ce9a", kill_on_drop: false }`
[INFO] [stdout] 98006fe2c458cb839b1f9c45a86d365ad30fb383090385bc38a05bf55af1ce9a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 66ec69d1151b35da8a98e6ad29eae2f315bfd50828119a8712597ed259ec3e5d
[INFO] running `Command { std: "docker" "start" "-a" "66ec69d1151b35da8a98e6ad29eae2f315bfd50828119a8712597ed259ec3e5d", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking args v2.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/traits/has_parsed_args.rs:22:21
[INFO] [stdout]    |
[INFO] [stdout] 22 |             Ok(Some(try!(self.validated_value_of::<T>(opt_name, validations))))
[INFO] [stdout]    |                     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits/has_parsed_args.rs:19:81
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn optional_validated_value_of<T>(&self, opt_name: &str, validations: &[Box<Validation<T=T>>])
[INFO] [stdout]    |                                                                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Validation<T=T>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/traits/has_parsed_args.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |             Ok(Some(try!(self.value_of::<T>(opt_name))))
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits/has_parsed_args.rs:38:72
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn validated_value_of<T>(&self, opt_name: &str, validations: &[Box<Validation<T=T>>])
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Validation<T=T>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options/mod.rs:18:41
[INFO] [stdout]    |
[INFO] [stdout] 18 |         default: Option<String>) -> Box<Opt> {
[INFO] [stdout]    |                                         ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options/mod.rs:35:32
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn box_clone(&self) -> Box<Opt>;
[INFO] [stdout]    |                                ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options/mod.rs:38:20
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl Clone for Box<Opt>
[INFO] [stdout]    |                    ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options/mod.rs:40:28
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn clone(&self) -> Box<Opt> {
[INFO] [stdout]    |                            ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options/mod.rs:96:32
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn box_clone(&self) -> Box<Opt> {
[INFO] [stdout]    |                                ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/options/mod.rs:175:32
[INFO] [stdout]     |
[INFO] [stdout] 175 |     fn box_clone(&self) -> Box<Opt> {
[INFO] [stdout]     |                                ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/options/mod.rs:180:18
[INFO] [stdout]     |
[INFO] [stdout] 180 | impl Display for Opt {
[INFO] [stdout]     |                  ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/options/mod.rs:186:16
[INFO] [stdout]     |
[INFO] [stdout] 186 | impl Debug for Opt {
[INFO] [stdout]     |                ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:137:32
[INFO] [stdout]     |
[INFO] [stdout] 137 |     opts: BTreeMap<String, Box<Opt>>,
[INFO] [stdout]     |                                ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:300:21
[INFO] [stdout]     |
[INFO] [stdout] 300 |             Ok(Some(try!(self.validated_value_of::<T>(opt_name, validations))))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:297:85
[INFO] [stdout]     |
[INFO] [stdout] 297 |     pub fn optional_validated_value_of<T>(&self, opt_name: &str, validations: &[Box<Validation<T=T>>])
[INFO] [stdout]     |                                                                                     ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Validation<T=T>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:314:21
[INFO] [stdout]     |
[INFO] [stdout] 314 |             Ok(Some(try!(self.value_of::<T>(opt_name))))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:327:76
[INFO] [stdout]     |
[INFO] [stdout] 327 |     pub fn validated_value_of<T>(&self, opt_name: &str, validations: &[Box<Validation<T=T>>])
[INFO] [stdout]     |                                                                            ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Validation<T=T>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:381:60
[INFO] [stdout]     |
[INFO] [stdout] 381 |     pub fn get_option(&self, opt_name :&str) -> Option<Box<Opt>> {
[INFO] [stdout]     |                                                            ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:386:41
[INFO] [stdout]     |
[INFO] [stdout] 386 |     fn register_opt(&mut self, opt: Box<Opt>) {
[INFO] [stdout]     |                                         ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/traits/has_parsed_args.rs:22:21
[INFO] [stdout]     |
[INFO] [stdout] 22  |             Ok(Some(try!(self.validated_value_of::<T>(opt_name, validations))))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:103:24
[INFO] [stdout]     |
[INFO] [stdout] 103 | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(deprecated)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/traits/has_parsed_args.rs:19:81
[INFO] [stdout]     |
[INFO] [stdout] 19  |     fn optional_validated_value_of<T>(&self, opt_name: &str, validations: &[Box<Validation<T=T>>])
[INFO] [stdout]     |                                                                                 ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Validation<T=T>`
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:103:24
[INFO] [stdout]     |
[INFO] [stdout] 103 | #![cfg_attr(test, deny(warnings))]
[INFO] [stdout]     |                        ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(bare_trait_objects)]` implied by `#[deny(warnings)]`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/traits/has_parsed_args.rs:31:21
[INFO] [stdout]    |
[INFO] [stdout] 31 |             Ok(Some(try!(self.value_of::<T>(opt_name))))
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/traits/has_parsed_args.rs:38:72
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn validated_value_of<T>(&self, opt_name: &str, validations: &[Box<Validation<T=T>>])
[INFO] [stdout]    |                                                                        ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Validation<T=T>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/options/tst.rs:5:74
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn create(has_arg: HasArg, occur: Occur, default: Option<String>) -> Box<Opt> {
[INFO] [stdout]   |                                                                          ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options/mod.rs:18:41
[INFO] [stdout]    |
[INFO] [stdout] 18 |         default: Option<String>) -> Box<Opt> {
[INFO] [stdout]    |                                         ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options/mod.rs:35:32
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn box_clone(&self) -> Box<Opt>;
[INFO] [stdout]    |                                ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options/mod.rs:38:20
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl Clone for Box<Opt>
[INFO] [stdout]    |                    ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options/mod.rs:40:28
[INFO] [stdout]    |
[INFO] [stdout] 40 |     fn clone(&self) -> Box<Opt> {
[INFO] [stdout]    |                            ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/options/mod.rs:96:32
[INFO] [stdout]    |
[INFO] [stdout] 96 |     fn box_clone(&self) -> Box<Opt> {
[INFO] [stdout]    |                                ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/options/mod.rs:175:32
[INFO] [stdout]     |
[INFO] [stdout] 175 |     fn box_clone(&self) -> Box<Opt> {
[INFO] [stdout]     |                                ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/options/mod.rs:180:18
[INFO] [stdout]     |
[INFO] [stdout] 180 | impl Display for Opt {
[INFO] [stdout]     |                  ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/options/mod.rs:186:16
[INFO] [stdout]     |
[INFO] [stdout] 186 | impl Debug for Opt {
[INFO] [stdout]     |                ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:137:32
[INFO] [stdout]     |
[INFO] [stdout] 137 |     opts: BTreeMap<String, Box<Opt>>,
[INFO] [stdout]     |                                ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:300:21
[INFO] [stdout]     |
[INFO] [stdout] 300 |             Ok(Some(try!(self.validated_value_of::<T>(opt_name, validations))))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:297:85
[INFO] [stdout]     |
[INFO] [stdout] 297 |     pub fn optional_validated_value_of<T>(&self, opt_name: &str, validations: &[Box<Validation<T=T>>])
[INFO] [stdout]     |                                                                                     ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Validation<T=T>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:314:21
[INFO] [stdout]     |
[INFO] [stdout] 314 |             Ok(Some(try!(self.value_of::<T>(opt_name))))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:327:76
[INFO] [stdout]     |
[INFO] [stdout] 327 |     pub fn validated_value_of<T>(&self, opt_name: &str, validations: &[Box<Validation<T=T>>])
[INFO] [stdout]     |                                                                            ^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Validation<T=T>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:381:60
[INFO] [stdout]     |
[INFO] [stdout] 381 |     pub fn get_option(&self, opt_name :&str) -> Option<Box<Opt>> {
[INFO] [stdout]     |                                                            ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:386:41
[INFO] [stdout]     |
[INFO] [stdout] 386 |     fn register_opt(&mut self, opt: Box<Opt>) {
[INFO] [stdout]     |                                         ^^^ help: use `dyn`: `dyn Opt`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 20 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `args` due to 21 previous errors
[INFO] running `Command { std: "docker" "inspect" "66ec69d1151b35da8a98e6ad29eae2f315bfd50828119a8712597ed259ec3e5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66ec69d1151b35da8a98e6ad29eae2f315bfd50828119a8712597ed259ec3e5d", kill_on_drop: false }`
[INFO] [stdout] 66ec69d1151b35da8a98e6ad29eae2f315bfd50828119a8712597ed259ec3e5d