[INFO] cloning repository https://github.com/tikue/fizzbuzz
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tikue/fizzbuzz" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftikue%2Ffizzbuzz", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftikue%2Ffizzbuzz'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ad97dd64d1f0f8135f44e116c4eb983d1de1000
[INFO] checking tikue/fizzbuzz against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftikue%2Ffizzbuzz" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tikue/fizzbuzz on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tikue/fizzbuzz
[INFO] finished tweaking git repo https://github.com/tikue/fizzbuzz
[INFO] tweaked toml for git repo https://github.com/tikue/fizzbuzz written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/tikue/fizzbuzz already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4aef643bbc4d121d3b0043f2b62418df75ef2b2ebe299c63ef208e5fa521994d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4aef643bbc4d121d3b0043f2b62418df75ef2b2ebe299c63ef208e5fa521994d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4aef643bbc4d121d3b0043f2b62418df75ef2b2ebe299c63ef208e5fa521994d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4aef643bbc4d121d3b0043f2b62418df75ef2b2ebe299c63ef208e5fa521994d", kill_on_drop: false }`
[INFO] [stdout] 4aef643bbc4d121d3b0043f2b62418df75ef2b2ebe299c63ef208e5fa521994d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 465a608e9d9d95759eee55bc1d8b79791f2fb82cd8632642059fb1246c545cbe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "465a608e9d9d95759eee55bc1d8b79791f2fb82cd8632642059fb1246c545cbe", kill_on_drop: false }`
[INFO] [stderr]     Checking fizzbuzz v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `int` in this scope
[INFO] [stdout]   --> src/main.rs:34:16
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn fizzbuzz(n: int) -> String {
[INFO] [stdout]    |                ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: rust-call ABI is subject to change
[INFO] [stdout]  --> src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     extern "rust-call" fn call(&self, (_,): (B,)) -> A {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]   = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: box expression syntax is experimental; you can call `Box::new` instead
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     box Const { x: a }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #49733 <https://github.com/rust-lang/rust/issues/49733> for more information
[INFO] [stdout]    = help: add `#![feature(box_syntax)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: rust-call ABI is subject to change
[INFO] [stdout]   --> src/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     extern "rust-call" fn call(&self, (a,): (A,)) -> A {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: box expression syntax is experimental; you can call `Box::new` instead
[INFO] [stdout]   --> src/main.rs:42:29
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let x = test(5, "buzz", box Id);
[INFO] [stdout]    |                             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #49733 <https://github.com/rust-lang/rust/issues/49733> for more information
[INFO] [stdout]    = help: add `#![feature(box_syntax)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:15:30
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn const_<A, B>(a: A) -> Box<Fn<(B,), A> + Send> where A: Send + Clone {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn<(B,), A> + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:35:36
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let test = |d, s: &str, x: Box<Fn<(String,), String> + Send>|
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn<(String,), String> + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]  --> src/main.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<A, B> Fn<(B,), A> for Const<A> where A: Send + Clone {
[INFO] [stdout]   |            ^^^^^^^^^^^ help: use parenthetical notation instead: `Fn(B) -> ()`
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]   = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: wrong number of type arguments: expected 1, found 2
[INFO] [stdout]  --> src/main.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<A, B> Fn<(B,), A> for Const<A> where A: Send + Clone {
[INFO] [stdout]   |                     ^ unexpected type argument
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<A> Fn<(A,), A> for Id {
[INFO] [stdout]    |         ^^^^^^^^^^^ help: use parenthetical notation instead: `Fn(A) -> ()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: wrong number of type arguments: expected 1, found 2
[INFO] [stdout]   --> src/main.rs:22:18
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<A> Fn<(A,), A> for Id {
[INFO] [stdout]    |                  ^ unexpected type argument
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'fn_traits'
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | /     extern "rust-call" fn call(&self, (_,): (B,)) -> A {
[INFO] [stdout] 8 | |         self.x.clone()
[INFO] [stdout] 9 | |     }
[INFO] [stdout]   | |_____^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]   = help: add `#![feature(fn_traits)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'fn_traits'
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     extern "rust-call" fn call(&self, (a,): (A,)) -> A {
[INFO] [stdout] 24 | |         a
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(fn_traits)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]   --> src/main.rs:15:30
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn const_<A, B>(a: A) -> Box<Fn<(B,), A> + Send> where A: Send + Clone {
[INFO] [stdout]    |                              ^^^^^^^^^^^ help: use parenthetical notation instead: `Fn(B) -> ()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: wrong number of type arguments: expected 1, found 2
[INFO] [stdout]   --> src/main.rs:15:39
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn const_<A, B>(a: A) -> Box<Fn<(B,), A> + Send> where A: Send + Clone {
[INFO] [stdout]    |                                       ^ unexpected type argument
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `int` in this scope
[INFO] [stdout]   --> src/main.rs:34:16
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn fizzbuzz(n: int) -> String {
[INFO] [stdout]    |                ^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: rust-call ABI is subject to change
[INFO] [stdout]  --> src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 |     extern "rust-call" fn call(&self, (_,): (B,)) -> A {
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]   = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: box expression syntax is experimental; you can call `Box::new` instead
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     box Const { x: a }
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #49733 <https://github.com/rust-lang/rust/issues/49733> for more information
[INFO] [stdout]    = help: add `#![feature(box_syntax)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: rust-call ABI is subject to change
[INFO] [stdout]   --> src/main.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 |     extern "rust-call" fn call(&self, (a,): (A,)) -> A {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: box expression syntax is experimental; you can call `Box::new` instead
[INFO] [stdout]   --> src/main.rs:42:29
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let x = test(5, "buzz", box Id);
[INFO] [stdout]    |                             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #49733 <https://github.com/rust-lang/rust/issues/49733> for more information
[INFO] [stdout]    = help: add `#![feature(box_syntax)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:15:30
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn const_<A, B>(a: A) -> Box<Fn<(B,), A> + Send> where A: Send + Clone {
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn<(B,), A> + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:35:36
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let test = |d, s: &str, x: Box<Fn<(String,), String> + Send>|
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn<(String,), String> + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]  --> src/main.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<A, B> Fn<(B,), A> for Const<A> where A: Send + Clone {
[INFO] [stdout]   |            ^^^^^^^^^^^ help: use parenthetical notation instead: `Fn(B) -> ()`
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]   = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: wrong number of type arguments: expected 1, found 2
[INFO] [stdout]  --> src/main.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | impl<A, B> Fn<(B,), A> for Const<A> where A: Send + Clone {
[INFO] [stdout]   |                     ^ unexpected type argument
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<A> Fn<(A,), A> for Id {
[INFO] [stdout]    |         ^^^^^^^^^^^ help: use parenthetical notation instead: `Fn(A) -> ()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: wrong number of type arguments: expected 1, found 2
[INFO] [stdout]   --> src/main.rs:22:18
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<A> Fn<(A,), A> for Id {
[INFO] [stdout]    |                  ^ unexpected type argument
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'fn_traits'
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | /     extern "rust-call" fn call(&self, (_,): (B,)) -> A {
[INFO] [stdout] 8 | |         self.x.clone()
[INFO] [stdout] 9 | |     }
[INFO] [stdout]   | |_____^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]   = help: add `#![feature(fn_traits)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'fn_traits'
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | /     extern "rust-call" fn call(&self, (a,): (A,)) -> A {
[INFO] [stdout] 24 | |         a
[INFO] [stdout] 25 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(fn_traits)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: the precise format of `Fn`-family traits' type parameters is subject to change
[INFO] [stdout]   --> src/main.rs:15:30
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn const_<A, B>(a: A) -> Box<Fn<(B,), A> + Send> where A: Send + Clone {
[INFO] [stdout]    |                              ^^^^^^^^^^^ help: use parenthetical notation instead: `Fn(B) -> ()`
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29625 <https://github.com/rust-lang/rust/issues/29625> for more information
[INFO] [stdout]    = help: add `#![feature(unboxed_closures)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0107]: wrong number of type arguments: expected 1, found 2
[INFO] [stdout]   --> src/main.rs:15:39
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn const_<A, B>(a: A) -> Box<Fn<(B,), A> + Send> where A: Send + Clone {
[INFO] [stdout]    |                                       ^ unexpected type argument
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0191]: the value of the associated type `Output` (from trait `FnOnce`) must be specified
[INFO] [stdout]   --> src/main.rs:15:30
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn const_<A, B>(a: A) -> Box<Fn<(B,), A> + Send> where A: Send + Clone {
[INFO] [stdout]    |                              ^^^^^^^^^-^
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       help: specify the associated type: `Output = A`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0191]: the value of the associated type `Output` (from trait `FnOnce`) must be specified
[INFO] [stdout]   --> src/main.rs:15:30
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn const_<A, B>(a: A) -> Box<Fn<(B,), A> + Send> where A: Send + Clone {
[INFO] [stdout]    |                              ^^^^^^^^^-^
[INFO] [stdout]    |                                       |
[INFO] [stdout]    |                                       help: specify the associated type: `Output = A`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0107, E0191, E0412, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0107`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 14 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0107, E0191, E0412, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0107`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `fizzbuzz`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "465a608e9d9d95759eee55bc1d8b79791f2fb82cd8632642059fb1246c545cbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "465a608e9d9d95759eee55bc1d8b79791f2fb82cd8632642059fb1246c545cbe", kill_on_drop: false }`
[INFO] [stdout] 465a608e9d9d95759eee55bc1d8b79791f2fb82cd8632642059fb1246c545cbe