[INFO] cloning repository https://github.com/RobertWHurst/Delta
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/RobertWHurst/Delta" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRobertWHurst%2FDelta", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRobertWHurst%2FDelta'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b64c3d559c8ba6aa43cd4e9573c009304624c530
[INFO] checking RobertWHurst/Delta against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRobertWHurst%2FDelta" "/workspace/builds/worker-57/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-57/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/RobertWHurst/Delta on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/RobertWHurst/Delta
[INFO] finished tweaking git repo https://github.com/RobertWHurst/Delta
[INFO] tweaked toml for git repo https://github.com/RobertWHurst/Delta written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate git repo https://github.com/RobertWHurst/Delta already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d3a79d5a3de8938b13cc25bbf4c206cbe4ebca6fb59f1a5d6173e75b3b38a935
[INFO] running `Command { std: "docker" "start" "-a" "d3a79d5a3de8938b13cc25bbf4c206cbe4ebca6fb59f1a5d6173e75b3b38a935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3a79d5a3de8938b13cc25bbf4c206cbe4ebca6fb59f1a5d6173e75b3b38a935", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3a79d5a3de8938b13cc25bbf4c206cbe4ebca6fb59f1a5d6173e75b3b38a935", kill_on_drop: false }`
[INFO] [stdout] d3a79d5a3de8938b13cc25bbf4c206cbe4ebca6fb59f1a5d6173e75b3b38a935
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 852c2ab839df033bf4c670718e4d527b909e920deb1c86f29df23648f9cf8e20
[INFO] running `Command { std: "docker" "start" "-a" "852c2ab839df033bf4c670718e4d527b909e920deb1c86f29df23648f9cf8e20", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.28
[INFO] [stderr]    Compiling siphasher v0.2.2
[INFO] [stderr]     Checking lazy_static v0.2.8
[INFO] [stderr]    Compiling itoa v0.3.1
[INFO] [stderr]    Compiling num-traits v0.1.40
[INFO] [stderr]    Compiling serde v0.9.15
[INFO] [stderr]    Compiling dtoa v0.4.1
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling khronos_api v1.0.1
[INFO] [stderr]     Checking byteorder v1.1.0
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking either v1.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]     Checking scopeguard v0.3.2
[INFO] [stderr]    Compiling rayon-core v1.2.1
[INFO] [stderr]     Checking futures v0.1.14
[INFO] [stderr]     Checking adler32 v1.0.0
[INFO] [stderr]     Checking inflate v0.2.0
[INFO] [stderr]     Checking color_quant v1.0.0
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.7
[INFO] [stderr]    Compiling xml-rs v0.3.6
[INFO] [stderr]    Compiling xml-rs v0.6.1
[INFO] [stderr]    Compiling phf_shared v0.7.21
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]     Checking coco v0.1.1
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking deflate v0.7.14
[INFO] [stderr]    Compiling x11-dl v2.14.0
[INFO] [stderr]    Compiling phf v0.7.21
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking num_cpus v1.6.2
[INFO] [stderr]     Checking shared_library v0.1.7
[INFO] [stderr]     Checking time v0.1.38
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]    Compiling wayland-scanner v0.9.9
[INFO] [stderr]    Compiling phf_generator v0.7.21
[INFO] [stderr]     Checking osmesa-sys v0.1.2
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num-rational v0.1.39
[INFO] [stderr]    Compiling phf_codegen v0.7.21
[INFO] [stderr]     Checking png v0.8.0
[INFO] [stderr]    Compiling gl_generator v0.5.5
[INFO] [stderr]     Checking fs2 v0.2.5
[INFO] [stderr]    Compiling target_build_utils v0.3.1
[INFO] [stderr]     Checking tempfile v2.1.6
[INFO] [stderr]     Checking memmap v0.4.0
[INFO] [stderr]    Compiling wayland-client v0.9.9
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]    Compiling serde_json v0.9.10
[INFO] [stderr]    Compiling gl v0.6.3
[INFO] [stderr]    Compiling glutin v0.9.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.13
[INFO] [stderr]     Checking image v0.14.0
[INFO] [stderr]    Compiling libloading v0.3.4
[INFO] [stderr]     Checking dlib v0.3.1
[INFO] [stderr]     Checking wayland-sys v0.9.9
[INFO] [stderr]     Checking wayland-window v0.6.1
[INFO] [stderr]     Checking wayland-kbd v0.9.1
[INFO] [stderr]     Checking winit v0.7.5
[INFO] [stderr]     Checking delta v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:6:24
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn tick(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                        ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ElementApi`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(associated_type_defaults)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(box_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:6:36
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn tick(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ControllerApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn load(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                        ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ElementApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:7:36
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn load(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ControllerApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn unload(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                          ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ElementApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:8:38
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn unload(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ControllerApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn message(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                           ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ElementApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:9:39
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn message(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ControllerApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/element.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |     controller: Box<Controller + Send>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Controller + Send`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/element.rs:43:46
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn controller(&mut self) -> &mut Box<Controller + Send> {
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Controller + Send`
[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: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:6:24
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn tick(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                        ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ElementApi`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:6:36
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn tick(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ControllerApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:7:24
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn load(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                        ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ElementApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:7:36
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn load(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                                    ^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ControllerApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn unload(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                          ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ElementApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:8:38
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn unload(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                                      ^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ControllerApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn message(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                           ^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ElementApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition.
[INFO] [stdout]  --> src/controller.rs:9:39
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn message(&mut self, ElementApi, ControllerApi) {}
[INFO] [stdout]   |                                       ^^^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: ControllerApi`
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]   = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/element.rs:21:21
[INFO] [stdout]    |
[INFO] [stdout] 21 |     controller: Box<Controller + Send>,
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Controller + Send`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/element.rs:43:46
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn controller(&mut self) -> &mut Box<Controller + Send> {
[INFO] [stdout]    |                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Controller + Send`
[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: aborting due to 2 previous errors; 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `delta` due to 3 previous errors; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 2 previous errors; 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "852c2ab839df033bf4c670718e4d527b909e920deb1c86f29df23648f9cf8e20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "852c2ab839df033bf4c670718e4d527b909e920deb1c86f29df23648f9cf8e20", kill_on_drop: false }`
[INFO] [stdout] 852c2ab839df033bf4c670718e4d527b909e920deb1c86f29df23648f9cf8e20
