[INFO] fetching crate difference_engine 0.1.0...
[INFO] checking difference_engine-0.1.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate difference_engine 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate difference_engine 0.1.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate difference_engine 0.1.0
[INFO] finished tweaking crates.io crate difference_engine 0.1.0
[INFO] tweaked toml for crates.io crate difference_engine 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e9b4b1ac33f1dd95e387409aa889eeff10afbfa781b736ee7facaff3628cdd3b
[INFO] running `"docker" "start" "-a" "e9b4b1ac33f1dd95e387409aa889eeff10afbfa781b736ee7facaff3628cdd3b"`
[INFO] [stderr]    Compiling dtoa v0.2.2
[INFO] [stderr]    Compiling itoa v0.1.1
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]     Checking bitflags v0.5.0
[INFO] [stderr]     Checking strsim v0.4.1
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking ansi_term v0.7.5
[INFO] [stderr]     Checking itertools v0.4.19
[INFO] [stderr]     Checking diff v0.1.11
[INFO] [stderr]     Checking colored v1.2.0
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking clap v2.5.2
[INFO] [stderr]    Compiling target_build_utils v0.1.2
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling serde_json v0.8.6
[INFO] [stderr]    Compiling libloading v0.2.4
[INFO] [stderr]     Checking difference_engine v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/language.rs:84:17
[INFO] [stderr]    |
[INFO] [stderr] 84 |   metadata: Box<Any>,
[INFO] [stderr]    |                 ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/language.rs:90:21
[INFO] [stderr]    |
[INFO] [stderr] 90 |       let data: Box<Any>;
[INFO] [stderr]    |                     ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/language.rs:91:58
[INFO] [stderr]    |
[INFO] [stderr] 91 |       if let Ok(raw_fn) = unsafe { lib.get::<fn() -> Box<Any>>(b"deng_plugin_initialize") } {
[INFO] [stderr]    |                                                          ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/language.rs:103:53
[INFO] [stderr]     |
[INFO] [stderr] 103 |     if let Ok(raw_fn) = unsafe { self.lib.get::<fn(&Any)>(b"deng_plugin_deinitialize") } {
[INFO] [stderr]     |                                                     ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/language.rs:111:28
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let raw_fn: Symbol<fn(&Any) -> String> = unsafe { self.lib.get(b"deng_plugin_name") }.expect("error in loading raw plugin");
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/language.rs:116:28
[INFO] [stderr]     |
[INFO] [stderr] 116 |     let raw_fn: Symbol<fn(&Any) -> String> = unsafe { self.lib.get(b"deng_plugin_description") }.expect("error in loading raw plugin");
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/language.rs:123:28
[INFO] [stderr]     |
[INFO] [stderr] 123 |     let raw_fn: Symbol<fn(&Any, &str, &str) -> Vec<(String, Provenance)>> = unsafe { self.lib.get(b"deng_plugin_diff") }
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/presentation.rs:82:17
[INFO] [stderr]    |
[INFO] [stderr] 82 |   metadata: Box<Any>,
[INFO] [stderr]    |                 ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/presentation.rs:88:21
[INFO] [stderr]    |
[INFO] [stderr] 88 |       let data: Box<Any>;
[INFO] [stderr]    |                     ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/presentation.rs:89:58
[INFO] [stderr]    |
[INFO] [stderr] 89 |       if let Ok(raw_fn) = unsafe { lib.get::<fn() -> Box<Any>>(b"deng_plugin_initialize") } {
[INFO] [stderr]    |                                                          ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/presentation.rs:101:53
[INFO] [stderr]     |
[INFO] [stderr] 101 |     if let Ok(raw_fn) = unsafe { self.lib.get::<fn(&Any)>(b"deng_plugin_deinitialize") } {
[INFO] [stderr]     |                                                     ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/presentation.rs:109:28
[INFO] [stderr]     |
[INFO] [stderr] 109 |     let raw_fn: Symbol<fn(&Any) -> String> = unsafe { self.lib.get(b"deng_plugin_name") }.expect("error in loading raw plugin");
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/presentation.rs:114:28
[INFO] [stderr]     |
[INFO] [stderr] 114 |     let raw_fn: Symbol<fn(&Any) -> String> = unsafe { self.lib.get(b"deng_plugin_description") }.expect("error in loading raw plugin");
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/presentation.rs:121:28
[INFO] [stderr]     |
[INFO] [stderr] 121 |     let raw_fn: Symbol<fn(&Any, &[(String, Provenance)])> = unsafe { self.lib.get(b"deng_plugin_present") }
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/language.rs:84:17
[INFO] [stderr]    |
[INFO] [stderr] 84 |   metadata: Box<Any>,
[INFO] [stderr]    |                 ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/language.rs:90:21
[INFO] [stderr]    |
[INFO] [stderr] 90 |       let data: Box<Any>;
[INFO] [stderr]    |                     ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/language.rs:91:58
[INFO] [stderr]    |
[INFO] [stderr] 91 |       if let Ok(raw_fn) = unsafe { lib.get::<fn() -> Box<Any>>(b"deng_plugin_initialize") } {
[INFO] [stderr]    |                                                          ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/language.rs:103:53
[INFO] [stderr]     |
[INFO] [stderr] 103 |     if let Ok(raw_fn) = unsafe { self.lib.get::<fn(&Any)>(b"deng_plugin_deinitialize") } {
[INFO] [stderr]     |                                                     ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/language.rs:111:28
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let raw_fn: Symbol<fn(&Any) -> String> = unsafe { self.lib.get(b"deng_plugin_name") }.expect("error in loading raw plugin");
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/language.rs:116:28
[INFO] [stderr]     |
[INFO] [stderr] 116 |     let raw_fn: Symbol<fn(&Any) -> String> = unsafe { self.lib.get(b"deng_plugin_description") }.expect("error in loading raw plugin");
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/language.rs:123:28
[INFO] [stderr]     |
[INFO] [stderr] 123 |     let raw_fn: Symbol<fn(&Any, &str, &str) -> Vec<(String, Provenance)>> = unsafe { self.lib.get(b"deng_plugin_diff") }
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/presentation.rs:82:17
[INFO] [stderr]    |
[INFO] [stderr] 82 |   metadata: Box<Any>,
[INFO] [stderr]    |                 ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/presentation.rs:88:21
[INFO] [stderr]    |
[INFO] [stderr] 88 |       let data: Box<Any>;
[INFO] [stderr]    |                     ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/presentation.rs:89:58
[INFO] [stderr]    |
[INFO] [stderr] 89 |       if let Ok(raw_fn) = unsafe { lib.get::<fn() -> Box<Any>>(b"deng_plugin_initialize") } {
[INFO] [stderr]    |                                                          ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/presentation.rs:101:53
[INFO] [stderr]     |
[INFO] [stderr] 101 |     if let Ok(raw_fn) = unsafe { self.lib.get::<fn(&Any)>(b"deng_plugin_deinitialize") } {
[INFO] [stderr]     |                                                     ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/presentation.rs:109:28
[INFO] [stderr]     |
[INFO] [stderr] 109 |     let raw_fn: Symbol<fn(&Any) -> String> = unsafe { self.lib.get(b"deng_plugin_name") }.expect("error in loading raw plugin");
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/presentation.rs:114:28
[INFO] [stderr]     |
[INFO] [stderr] 114 |     let raw_fn: Symbol<fn(&Any) -> String> = unsafe { self.lib.get(b"deng_plugin_description") }.expect("error in loading raw plugin");
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/presentation.rs:121:28
[INFO] [stderr]     |
[INFO] [stderr] 121 |     let raw_fn: Symbol<fn(&Any, &[(String, Provenance)])> = unsafe { self.lib.get(b"deng_plugin_present") }
[INFO] [stderr]     |                            ^^^ help: use `dyn`: `dyn Any`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:77:45
[INFO] [stderr]    |
[INFO] [stderr] 77 |   let mut registered_languages_vec: Vec<Box<Language>> = vec![Box::new(SimpleLinewise), Box::new(SimpleCharwise)];
[INFO] [stderr]    |                                             ^^^^^^^^ help: use `dyn`: `dyn Language`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:95:49
[INFO] [stderr]    |
[INFO] [stderr] 95 |   let registered_languages: HashMap<String, Box<Language>> =
[INFO] [stderr]    |                                                 ^^^^^^^^ help: use `dyn`: `dyn Language`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:98:49
[INFO] [stderr]    |
[INFO] [stderr] 98 |   let mut registered_presentations_vec: Vec<Box<Presentation>> = vec![Box::new(BasicColored), Box::new(BasicStyled)];
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn Presentation`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:116:53
[INFO] [stderr]     |
[INFO] [stderr] 116 |   let registered_presentations: HashMap<String, Box<Presentation>> =
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn Presentation`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]   --> src/main.rs:83:12
[INFO] [stderr]    |
[INFO] [stderr] 83 |     .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("languages").join("raw")))
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]    --> src/main.rs:104:12
[INFO] [stderr]     |
[INFO] [stderr] 104 |     .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("presentations").join("raw")))
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0034]: multiple applicable items in scope
[INFO] [stderr]   --> src/main.rs:85:6
[INFO] [stderr]    |
[INFO] [stderr] 85 |     .flatten()
[INFO] [stderr]    |      ^^^^^^^ multiple `flatten` found
[INFO] [stderr]    |
[INFO] [stderr]    = note: candidate #1 is defined in an impl of the trait `std::iter::Iterator` for the type `std::iter::FlatMap<_, _, _>`
[INFO] [stderr]    = help: to disambiguate the method call, write `std::iter::Iterator::flatten(env::current_dir()
[INFO] [stderr]                .into_iter()
[INFO] [stderr]                .map(|d| d.join(".deng").join("languages").join("raw"))
[INFO] [stderr]                .chain(raw_language_plugin_path.as_ref().into_iter().flat_map(env::split_paths))
[INFO] [stderr]                .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("languages").join("raw")))
[INFO] [stderr]                .flat_map(|d| d.read_dir().into_iter()))` instead
[INFO] [stderr]    = note: candidate #2 is defined in an impl of the trait `itertools::Itertools` for the type `_`
[INFO] [stderr]    = help: to disambiguate the method call, write `itertools::Itertools::flatten(env::current_dir()
[INFO] [stderr]                .into_iter()
[INFO] [stderr]                .map(|d| d.join(".deng").join("languages").join("raw"))
[INFO] [stderr]                .chain(raw_language_plugin_path.as_ref().into_iter().flat_map(env::split_paths))
[INFO] [stderr]                .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("languages").join("raw")))
[INFO] [stderr]                .flat_map(|d| d.read_dir().into_iter()))` instead
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
[INFO] [stderr]   --> src/main.rs:92:16
[INFO] [stderr]    |
[INFO] [stderr] 92 |     .flat_map(|p| RawPluginLanguage::load(&p).into_iter()) {
[INFO] [stderr]    |                ^ borrow the `Path` instead
[INFO] [stderr]    |
[INFO] [stderr]    = help: within `std::path::Path`, the trait `std::marker::Sized` is not implemented for `[u8]`
[INFO] [stderr]    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stderr]    = note: required because it appears within the type `std::path::Path`
[INFO] [stderr]    = note: all local variables must have a statically known size
[INFO] [stderr]    = help: unsized locals are gated as an unstable feature
[INFO] [stderr] 
[INFO] [stderr] error[E0034]: multiple applicable items in scope
[INFO] [stderr]    --> src/main.rs:106:6
[INFO] [stderr]     |
[INFO] [stderr] 106 |     .flatten()
[INFO] [stderr]     |      ^^^^^^^ multiple `flatten` found
[INFO] [stderr]     |
[INFO] [stderr]     = note: candidate #1 is defined in an impl of the trait `std::iter::Iterator` for the type `std::iter::FlatMap<_, _, _>`
[INFO] [stderr]     = help: to disambiguate the method call, write `std::iter::Iterator::flatten(env::current_dir()
[INFO] [stderr]                 .into_iter()
[INFO] [stderr]                 .map(|d| d.join(".deng").join("presentations").join("raw"))
[INFO] [stderr]                 .chain(raw_presentation_plugin_path.as_ref().into_iter().flat_map(env::split_paths))
[INFO] [stderr]                 .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("presentations").join("raw")))
[INFO] [stderr]                 .flat_map(|d| d.read_dir().into_iter()))` instead
[INFO] [stderr]     = note: candidate #2 is defined in an impl of the trait `itertools::Itertools` for the type `_`
[INFO] [stderr]     = help: to disambiguate the method call, write `itertools::Itertools::flatten(env::current_dir()
[INFO] [stderr]                 .into_iter()
[INFO] [stderr]                 .map(|d| d.join(".deng").join("presentations").join("raw"))
[INFO] [stderr]                 .chain(raw_presentation_plugin_path.as_ref().into_iter().flat_map(env::split_paths))
[INFO] [stderr]                 .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("presentations").join("raw")))
[INFO] [stderr]                 .flat_map(|d| d.read_dir().into_iter()))` instead
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
[INFO] [stderr]    --> src/main.rs:113:16
[INFO] [stderr]     |
[INFO] [stderr] 113 |     .flat_map(|p| RawPluginPresentation::load(&p).into_iter()) {
[INFO] [stderr]     |                ^ borrow the `Path` instead
[INFO] [stderr]     |
[INFO] [stderr]     = help: within `std::path::Path`, the trait `std::marker::Sized` is not implemented for `[u8]`
[INFO] [stderr]     = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stderr]     = note: required because it appears within the type `std::path::Path`
[INFO] [stderr]     = note: all local variables must have a statically known size
[INFO] [stderr]     = help: unsized locals are gated as an unstable feature
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:77:45
[INFO] [stderr]    |
[INFO] [stderr] 77 |   let mut registered_languages_vec: Vec<Box<Language>> = vec![Box::new(SimpleLinewise), Box::new(SimpleCharwise)];
[INFO] [stderr]    |                                             ^^^^^^^^ help: use `dyn`: `dyn Language`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:95:49
[INFO] [stderr]    |
[INFO] [stderr] 95 |   let registered_languages: HashMap<String, Box<Language>> =
[INFO] [stderr]    |                                                 ^^^^^^^^ help: use `dyn`: `dyn Language`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:98:49
[INFO] [stderr]    |
[INFO] [stderr] 98 |   let mut registered_presentations_vec: Vec<Box<Presentation>> = vec![Box::new(BasicColored), Box::new(BasicStyled)];
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^ help: use `dyn`: `dyn Presentation`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:116:53
[INFO] [stderr]     |
[INFO] [stderr] 116 |   let registered_presentations: HashMap<String, Box<Presentation>> =
[INFO] [stderr]     |                                                     ^^^^^^^^^^^^ help: use `dyn`: `dyn Presentation`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0034, E0277.
[INFO] [stderr] For more information about an error, try `rustc --explain E0034`.
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]   --> src/main.rs:83:12
[INFO] [stderr]    |
[INFO] [stderr] 83 |     .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("languages").join("raw")))
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::env::home_dir': This function's behavior is unexpected and probably not what you want. Consider using the home_dir function from https://crates.io/crates/dirs instead.
[INFO] [stderr]    --> src/main.rs:104:12
[INFO] [stderr]     |
[INFO] [stderr] 104 |     .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("presentations").join("raw")))
[INFO] [stderr]     |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `difference_engine`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0034]: multiple applicable items in scope
[INFO] [stderr]   --> src/main.rs:85:6
[INFO] [stderr]    |
[INFO] [stderr] 85 |     .flatten()
[INFO] [stderr]    |      ^^^^^^^ multiple `flatten` found
[INFO] [stderr]    |
[INFO] [stderr]    = note: candidate #1 is defined in an impl of the trait `std::iter::Iterator` for the type `std::iter::FlatMap<_, _, _>`
[INFO] [stderr]    = help: to disambiguate the method call, write `std::iter::Iterator::flatten(env::current_dir()
[INFO] [stderr]                .into_iter()
[INFO] [stderr]                .map(|d| d.join(".deng").join("languages").join("raw"))
[INFO] [stderr]                .chain(raw_language_plugin_path.as_ref().into_iter().flat_map(env::split_paths))
[INFO] [stderr]                .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("languages").join("raw")))
[INFO] [stderr]                .flat_map(|d| d.read_dir().into_iter()))` instead
[INFO] [stderr]    = note: candidate #2 is defined in an impl of the trait `itertools::Itertools` for the type `_`
[INFO] [stderr]    = help: to disambiguate the method call, write `itertools::Itertools::flatten(env::current_dir()
[INFO] [stderr]                .into_iter()
[INFO] [stderr]                .map(|d| d.join(".deng").join("languages").join("raw"))
[INFO] [stderr]                .chain(raw_language_plugin_path.as_ref().into_iter().flat_map(env::split_paths))
[INFO] [stderr]                .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("languages").join("raw")))
[INFO] [stderr]                .flat_map(|d| d.read_dir().into_iter()))` instead
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
[INFO] [stderr]   --> src/main.rs:92:16
[INFO] [stderr]    |
[INFO] [stderr] 92 |     .flat_map(|p| RawPluginLanguage::load(&p).into_iter()) {
[INFO] [stderr]    |                ^ borrow the `Path` instead
[INFO] [stderr]    |
[INFO] [stderr]    = help: within `std::path::Path`, the trait `std::marker::Sized` is not implemented for `[u8]`
[INFO] [stderr]    = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stderr]    = note: required because it appears within the type `std::path::Path`
[INFO] [stderr]    = note: all local variables must have a statically known size
[INFO] [stderr]    = help: unsized locals are gated as an unstable feature
[INFO] [stderr] 
[INFO] [stderr] error[E0034]: multiple applicable items in scope
[INFO] [stderr]    --> src/main.rs:106:6
[INFO] [stderr]     |
[INFO] [stderr] 106 |     .flatten()
[INFO] [stderr]     |      ^^^^^^^ multiple `flatten` found
[INFO] [stderr]     |
[INFO] [stderr]     = note: candidate #1 is defined in an impl of the trait `std::iter::Iterator` for the type `std::iter::FlatMap<_, _, _>`
[INFO] [stderr]     = help: to disambiguate the method call, write `std::iter::Iterator::flatten(env::current_dir()
[INFO] [stderr]                 .into_iter()
[INFO] [stderr]                 .map(|d| d.join(".deng").join("presentations").join("raw"))
[INFO] [stderr]                 .chain(raw_presentation_plugin_path.as_ref().into_iter().flat_map(env::split_paths))
[INFO] [stderr]                 .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("presentations").join("raw")))
[INFO] [stderr]                 .flat_map(|d| d.read_dir().into_iter()))` instead
[INFO] [stderr]     = note: candidate #2 is defined in an impl of the trait `itertools::Itertools` for the type `_`
[INFO] [stderr]     = help: to disambiguate the method call, write `itertools::Itertools::flatten(env::current_dir()
[INFO] [stderr]                 .into_iter()
[INFO] [stderr]                 .map(|d| d.join(".deng").join("presentations").join("raw"))
[INFO] [stderr]                 .chain(raw_presentation_plugin_path.as_ref().into_iter().flat_map(env::split_paths))
[INFO] [stderr]                 .chain(env::home_dir().into_iter().map(|d| d.join(".deng").join("presentations").join("raw")))
[INFO] [stderr]                 .flat_map(|d| d.read_dir().into_iter()))` instead
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the size for values of type `[u8]` cannot be known at compilation time
[INFO] [stderr]    --> src/main.rs:113:16
[INFO] [stderr]     |
[INFO] [stderr] 113 |     .flat_map(|p| RawPluginPresentation::load(&p).into_iter()) {
[INFO] [stderr]     |                ^ borrow the `Path` instead
[INFO] [stderr]     |
[INFO] [stderr]     = help: within `std::path::Path`, the trait `std::marker::Sized` is not implemented for `[u8]`
[INFO] [stderr]     = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
[INFO] [stderr]     = note: required because it appears within the type `std::path::Path`
[INFO] [stderr]     = note: all local variables must have a statically known size
[INFO] [stderr]     = help: unsized locals are gated as an unstable feature
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0034, E0277.
[INFO] [stderr] For more information about an error, try `rustc --explain E0034`.
[INFO] [stderr] error: could not compile `difference_engine`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "e9b4b1ac33f1dd95e387409aa889eeff10afbfa781b736ee7facaff3628cdd3b"`
[INFO] running `"docker" "rm" "-f" "e9b4b1ac33f1dd95e387409aa889eeff10afbfa781b736ee7facaff3628cdd3b"`
[INFO] [stdout] e9b4b1ac33f1dd95e387409aa889eeff10afbfa781b736ee7facaff3628cdd3b