[INFO] fetching crate transducers 0.0.2...
[INFO] checking transducers-0.0.2 against try#f82303294ca6add47eea966608ce02688928f965 for pr-107123-1
[INFO] extracting crate transducers 0.0.2 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate transducers 0.0.2 on toolchain f82303294ca6add47eea966608ce02688928f965
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f82303294ca6add47eea966608ce02688928f965" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate transducers 0.0.2
[INFO] finished tweaking crates.io crate transducers 0.0.2
[INFO] tweaked toml for crates.io crate transducers 0.0.2 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f82303294ca6add47eea966608ce02688928f965" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f82303294ca6add47eea966608ce02688928f965" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+f82303294ca6add47eea966608ce02688928f965" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48a2859fe0aaaba718f400e57db7ba420807214107d01e2737074aa3e2250479
[INFO] running `Command { std: "docker" "start" "-a" "48a2859fe0aaaba718f400e57db7ba420807214107d01e2737074aa3e2250479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48a2859fe0aaaba718f400e57db7ba420807214107d01e2737074aa3e2250479", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48a2859fe0aaaba718f400e57db7ba420807214107d01e2737074aa3e2250479", kill_on_drop: false }`
[INFO] [stdout] 48a2859fe0aaaba718f400e57db7ba420807214107d01e2737074aa3e2250479
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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:a420fdec406141845121210faa381f8029b0be6d4170deff7c4445a424f67918" "/opt/rustwide/cargo-home/bin/cargo" "+f82303294ca6add47eea966608ce02688928f965" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a0ff7a02b07961ecdbc0291b5e3f5024060c1ecce49bcdc067b99ce2a5d5734f
[INFO] running `Command { std: "docker" "start" "-a" "a0ff7a02b07961ecdbc0291b5e3f5024060c1ecce49bcdc067b99ce2a5d5734f", kill_on_drop: false }`
[INFO] [stderr]     Checking transducers v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transform.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |     step: Box<Fn(R, T) -> R + 't>
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     step: Box<dyn Fn(R, T) -> R + 't>
[INFO] [stdout]    |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transform.rs:63:15
[INFO] [stdout]    |
[INFO] [stdout] 63 |     step: Box<Fn(R, T) -> R + 't>,
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 |     step: Box<dyn Fn(R, T) -> R + 't>,
[INFO] [stdout]    |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform.rs:116:15
[INFO] [stdout]     |
[INFO] [stdout] 116 |     step: Box<Fn(R, T) -> R + 't>,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 116 |     step: Box<dyn Fn(R, T) -> R + 't>,
[INFO] [stdout]     |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transform.rs:22:15
[INFO] [stdout]    |
[INFO] [stdout] 22 |     step: Box<Fn(R, T) -> R + 't>
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     step: Box<dyn Fn(R, T) -> R + 't>
[INFO] [stdout]    |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/transform.rs:63:15
[INFO] [stdout]    |
[INFO] [stdout] 63 |     step: Box<Fn(R, T) -> R + 't>,
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 63 |     step: Box<dyn Fn(R, T) -> R + 't>,
[INFO] [stdout]    |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/transform.rs:116:15
[INFO] [stdout]     |
[INFO] [stdout] 116 |     step: Box<Fn(R, T) -> R + 't>,
[INFO] [stdout]     |               ^^^^^^^^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 116 |     step: Box<dyn Fn(R, T) -> R + 't>,
[INFO] [stdout]     |               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Composed<X, Y, Z, F, G>: Callable<(X,)>` is not satisfied
[INFO] [stdout]   --> src/compose.rs:27:38
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl<X, Y, Z, F, G> FnOnce<(X,)> for Composed<X, Y, Z, F, G>
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(X,)>` is not implemented for `Composed<X, Y, Z, F, G>`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `FnOnce`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:243:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Composed<X, Y, Z, F, G>: Callable<(X,)>` is not satisfied
[INFO] [stdout]   --> src/compose.rs:27:38
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl<X, Y, Z, F, G> FnOnce<(X,)> for Composed<X, Y, Z, F, G>
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(X,)>` is not implemented for `Composed<X, Y, Z, F, G>`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `FnOnce`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:243:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Composed<X, Y, Z, F, G>: Callable<(X,)>` is not satisfied
[INFO] [stdout]   --> src/compose.rs:38:37
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<X, Y, Z, F, G> FnMut<(X,)> for Composed<X, Y, Z, F, G>
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(X,)>` is not implemented for `Composed<X, Y, Z, F, G>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `Composed<X, Y, Z, F, G>` to implement `FnOnce<(X,)>`
[INFO] [stdout] note: required by a bound in `FnMut`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:163:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Composed<X, Y, Z, F, G>: Callable<(X,)>` is not satisfied
[INFO] [stdout]   --> src/compose.rs:48:34
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl<X, Y, Z, F, G> Fn<(X,)> for Composed<X, Y, Z, F, G>
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(X,)>` is not implemented for `Composed<X, Y, Z, F, G>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `Composed<X, Y, Z, F, G>` to implement `FnOnce<(X,)>`
[INFO] [stdout]    = note: required for `Composed<X, Y, Z, F, G>` to implement `FnMut<(X,)>`
[INFO] [stdout] note: required by a bound in `Fn`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:76:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `IdentityStep<'t, R, T>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:25:35
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl<'t, R, T> FnOnce<(R, T)> for IdentityStep<'t, R, T> {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `IdentityStep<'t, R, T>`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `FnOnce`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:243:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `IdentityStep<'t, R, T>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:32:34
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl<'t, R, T> FnMut<(R, T)> for IdentityStep<'t, R, T> {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `IdentityStep<'t, R, T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `IdentityStep<'t, R, T>` to implement `FnOnce<(R, T)>`
[INFO] [stdout] note: required by a bound in `FnMut`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:163:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `IdentityStep<'t, R, T>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:38:31
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<'t, R, T> Fn<(R, T)> for IdentityStep<'t, R, T> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `IdentityStep<'t, R, T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `IdentityStep<'t, R, T>` to implement `FnOnce<(R, T)>`
[INFO] [stdout]    = note: required for `IdentityStep<'t, R, T>` to implement `FnMut<(R, T)>`
[INFO] [stdout] note: required by a bound in `Fn`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:76:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MappingStep<'t, R, T, F>: Callable<(R, U)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:67:41
[INFO] [stdout]    |
[INFO] [stdout] 67 | impl<'t, R, T, U, F> FnOnce<(R, U)> for MappingStep<'t, R, T, F>
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, U)>` is not implemented for `MappingStep<'t, R, T, F>`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `FnOnce`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:243:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Composed<X, Y, Z, F, G>: Callable<(X,)>` is not satisfied
[INFO] [stdout]   --> src/compose.rs:38:37
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<X, Y, Z, F, G> FnMut<(X,)> for Composed<X, Y, Z, F, G>
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(X,)>` is not implemented for `Composed<X, Y, Z, F, G>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `Composed<X, Y, Z, F, G>` to implement `FnOnce<(X,)>`
[INFO] [stdout] note: required by a bound in `FnMut`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:163:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `Composed<X, Y, Z, F, G>: Callable<(X,)>` is not satisfied
[INFO] [stdout]   --> src/compose.rs:48:34
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl<X, Y, Z, F, G> Fn<(X,)> for Composed<X, Y, Z, F, G>
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(X,)>` is not implemented for `Composed<X, Y, Z, F, G>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `Composed<X, Y, Z, F, G>` to implement `FnOnce<(X,)>`
[INFO] [stdout]    = note: required for `Composed<X, Y, Z, F, G>` to implement `FnMut<(X,)>`
[INFO] [stdout] note: required by a bound in `Fn`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:76:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `IdentityStep<'t, R, T>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:25:35
[INFO] [stdout]    |
[INFO] [stdout] 25 | impl<'t, R, T> FnOnce<(R, T)> for IdentityStep<'t, R, T> {
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `IdentityStep<'t, R, T>`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `FnOnce`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:243:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `IdentityStep<'t, R, T>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:32:34
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl<'t, R, T> FnMut<(R, T)> for IdentityStep<'t, R, T> {
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `IdentityStep<'t, R, T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `IdentityStep<'t, R, T>` to implement `FnOnce<(R, T)>`
[INFO] [stdout] note: required by a bound in `FnMut`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:163:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `IdentityStep<'t, R, T>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:38:31
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl<'t, R, T> Fn<(R, T)> for IdentityStep<'t, R, T> {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `IdentityStep<'t, R, T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `IdentityStep<'t, R, T>` to implement `FnOnce<(R, T)>`
[INFO] [stdout]    = note: required for `IdentityStep<'t, R, T>` to implement `FnMut<(R, T)>`
[INFO] [stdout] note: required by a bound in `Fn`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:76:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MappingStep<'t, R, T, F>: Callable<(R, U)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:67:41
[INFO] [stdout]    |
[INFO] [stdout] 67 | impl<'t, R, T, U, F> FnOnce<(R, U)> for MappingStep<'t, R, T, F>
[INFO] [stdout]    |                                         ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, U)>` is not implemented for `MappingStep<'t, R, T, F>`
[INFO] [stdout]    |
[INFO] [stdout] note: required by a bound in `FnOnce`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:243:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MappingStep<'t, R, T, F>: Callable<(R, U)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:75:40
[INFO] [stdout]    |
[INFO] [stdout] 75 | impl<'t, R, T, U, F> FnMut<(R, U)> for MappingStep<'t, R, T, F>
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, U)>` is not implemented for `MappingStep<'t, R, T, F>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `MappingStep<'t, R, T, F>` to implement `FnOnce<(R, U)>`
[INFO] [stdout] note: required by a bound in `FnMut`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:163:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MappingStep<'t, R, T, F>: Callable<(R, U)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:75:40
[INFO] [stdout]    |
[INFO] [stdout] 75 | impl<'t, R, T, U, F> FnMut<(R, U)> for MappingStep<'t, R, T, F>
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, U)>` is not implemented for `MappingStep<'t, R, T, F>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `MappingStep<'t, R, T, F>` to implement `FnOnce<(R, U)>`
[INFO] [stdout] note: required by a bound in `FnMut`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:163:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MappingStep<'t, R, T, F>: Callable<(R, U)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:82:37
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl<'t, R, T, U, F> Fn<(R, U)> for MappingStep<'t, R, T, F>
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, U)>` is not implemented for `MappingStep<'t, R, T, F>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `MappingStep<'t, R, T, F>` to implement `FnOnce<(R, U)>`
[INFO] [stdout]    = note: required for `MappingStep<'t, R, T, F>` to implement `FnMut<(R, U)>`
[INFO] [stdout] note: required by a bound in `Fn`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:76:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `MappingStep<'t, R, T, F>: Callable<(R, U)>` is not satisfied
[INFO] [stdout]   --> src/transform.rs:82:37
[INFO] [stdout]    |
[INFO] [stdout] 82 | impl<'t, R, T, U, F> Fn<(R, U)> for MappingStep<'t, R, T, F>
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, U)>` is not implemented for `MappingStep<'t, R, T, F>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: required for `MappingStep<'t, R, T, F>` to implement `FnOnce<(R, U)>`
[INFO] [stdout]    = note: required for `MappingStep<'t, R, T, F>` to implement `FnMut<(R, U)>`
[INFO] [stdout] note: required by a bound in `Fn`
[INFO] [stdout]   --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:76:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `FilteringStep<'t, R, T, P>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]    --> src/transform.rs:120:38
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl<'t, R, T, P> FnOnce<(R, T)> for FilteringStep<'t, R, T, P>
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `FilteringStep<'t, R, T, P>`
[INFO] [stdout]     |
[INFO] [stdout] note: required by a bound in `FnOnce`
[INFO] [stdout]    --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:243:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `FilteringStep<'t, R, T, P>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]    --> src/transform.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 | impl<'t, R, T, P> FnMut<(R, T)> for FilteringStep<'t, R, T, P>
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `FilteringStep<'t, R, T, P>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `FilteringStep<'t, R, T, P>` to implement `FnOnce<(R, T)>`
[INFO] [stdout] note: required by a bound in `FnMut`
[INFO] [stdout]    --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:163:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `FilteringStep<'t, R, T, P>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]    --> src/transform.rs:135:34
[INFO] [stdout]     |
[INFO] [stdout] 135 | impl<'t, R, T, P> Fn<(R, T)> for FilteringStep<'t, R, T, P>
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `FilteringStep<'t, R, T, P>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `FilteringStep<'t, R, T, P>` to implement `FnOnce<(R, T)>`
[INFO] [stdout]     = note: required for `FilteringStep<'t, R, T, P>` to implement `FnMut<(R, T)>`
[INFO] [stdout] note: required by a bound in `Fn`
[INFO] [stdout]    --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:76:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `FilteringStep<'t, R, T, P>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]    --> src/transform.rs:120:38
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl<'t, R, T, P> FnOnce<(R, T)> for FilteringStep<'t, R, T, P>
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `FilteringStep<'t, R, T, P>`
[INFO] [stdout]     |
[INFO] [stdout] note: required by a bound in `FnOnce`
[INFO] [stdout]    --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:243:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `FilteringStep<'t, R, T, P>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]    --> src/transform.rs:128:37
[INFO] [stdout]     |
[INFO] [stdout] 128 | impl<'t, R, T, P> FnMut<(R, T)> for FilteringStep<'t, R, T, P>
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `FilteringStep<'t, R, T, P>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `FilteringStep<'t, R, T, P>` to implement `FnOnce<(R, T)>`
[INFO] [stdout] note: required by a bound in `FnMut`
[INFO] [stdout]    --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:163:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the trait bound `FilteringStep<'t, R, T, P>: Callable<(R, T)>` is not satisfied
[INFO] [stdout]    --> src/transform.rs:135:34
[INFO] [stdout]     |
[INFO] [stdout] 135 | impl<'t, R, T, P> Fn<(R, T)> for FilteringStep<'t, R, T, P>
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callable<(R, T)>` is not implemented for `FilteringStep<'t, R, T, P>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: required for `FilteringStep<'t, R, T, P>` to implement `FnOnce<(R, T)>`
[INFO] [stdout]     = note: required for `FilteringStep<'t, R, T, P>` to implement `FnMut<(R, T)>`
[INFO] [stdout] note: required by a bound in `Fn`
[INFO] [stdout]    --> /rustc/f82303294ca6add47eea966608ce02688928f965/library/core/src/ops/function.rs:76:1
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `transducers` (lib test) due to 13 previous errors; 3 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `transducers` (lib) due to 13 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a0ff7a02b07961ecdbc0291b5e3f5024060c1ecce49bcdc067b99ce2a5d5734f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0ff7a02b07961ecdbc0291b5e3f5024060c1ecce49bcdc067b99ce2a5d5734f", kill_on_drop: false }`
[INFO] [stdout] a0ff7a02b07961ecdbc0291b5e3f5024060c1ecce49bcdc067b99ce2a5d5734f