[INFO] fetching crate breadth-first-zip 0.3.0...
[INFO] checking breadth-first-zip-0.3.0 against master#30f74ff0dc4d66debc8b50724c446f817e5f75f4 for pr-121848-1
[INFO] extracting crate breadth-first-zip 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate breadth-first-zip 0.3.0 on toolchain 30f74ff0dc4d66debc8b50724c446f817e5f75f4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate breadth-first-zip 0.3.0
[INFO] finished tweaking crates.io crate breadth-first-zip 0.3.0
[INFO] tweaked toml for crates.io crate breadth-first-zip 0.3.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded breadth-first-zip-macros v0.3.0
[INFO] [stderr]   Downloaded reiterator v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae4f8b5bd88e3beb79c969dfc2c91e737a339e86bfe885619cb6052c2d774449
[INFO] running `Command { std: "docker" "start" "-a" "ae4f8b5bd88e3beb79c969dfc2c91e737a339e86bfe885619cb6052c2d774449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae4f8b5bd88e3beb79c969dfc2c91e737a339e86bfe885619cb6052c2d774449", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae4f8b5bd88e3beb79c969dfc2c91e737a339e86bfe885619cb6052c2d774449", kill_on_drop: false }`
[INFO] [stdout] ae4f8b5bd88e3beb79c969dfc2c91e737a339e86bfe885619cb6052c2d774449
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+30f74ff0dc4d66debc8b50724c446f817e5f75f4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d168ef79de26a8462530068652832cd35ff8dd78d4277ded024b10892f4f5e7
[INFO] running `Command { std: "docker" "start" "-a" "3d168ef79de26a8462530068652832cd35ff8dd78d4277ded024b10892f4f5e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling breadth-first-zip-macros v0.3.0
[INFO] [stderr]    Compiling reiterator v0.3.0
[INFO] [stderr]    Compiling breadth-first-zip v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]    Compiling syn v2.0.57
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking quickcheck v1.0.3
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | breadth_first_zip_macros::implement_flatten!();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    | |
[INFO] [stdout]    | expected type parameter `B`, found `(_,)`
[INFO] [stdout]    | this expression has type `B`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected type parameter `B`
[INFO] [stdout]                        found tuple `(_,)`
[INFO] [stdout]    = note: this error originates in the macro `breadth_first_zip_macros::implement_flatten` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for type `usize` in the current scope
[INFO] [stdout]    --> src/lib.rs:149:61
[INFO] [stdout]     |
[INFO] [stdout] 149 |                 .next(index_sum.checked_sub(self.iter.index.get())?)
[INFO] [stdout]     |                                                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `ge` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/cmp.rs:1221:5
[INFO] [stdout] help: trait `SliceIndex` which provides `get` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 45  + use core::slice::SliceIndex;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for type `usize` in the current scope
[INFO] [stdout]    --> src/lib.rs:153:30
[INFO] [stdout]     |
[INFO] [stdout] 153 |             (self.iter.index.get() < index_sum).then(|| self.iter.next())??; // Comparison is just an optimization, not logically necessary
[INFO] [stdout]     |                              ^^^
[INFO] [stdout]    --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/slice/index.rs:176:8
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method is available for `usize` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `ge` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/cmp.rs:1221:5
[INFO] [stdout] help: trait `SliceIndex` which provides `get` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 45  + use core::slice::SliceIndex;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:230:1
[INFO] [stdout]     |
[INFO] [stdout] 230 | breadth_first_zip_macros::implement!(); // Implement traits for (A,), (A, B), (A, B, C), (A, B, C, D), ...
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | |
[INFO] [stdout]     | expected type parameter `A`, found `(_,)`
[INFO] [stdout]     | this expression has type `A`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type parameter `A`
[INFO] [stdout]                         found tuple `(_,)`
[INFO] [stdout]     = note: this error originates in the macro `breadth_first_zip_macros::implement` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | breadth_first_zip_macros::implement_flatten!();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    | |
[INFO] [stdout]    | expected type parameter `B`, found `(_,)`
[INFO] [stdout]    | this expression has type `B`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected type parameter `B`
[INFO] [stdout]                        found tuple `(_,)`
[INFO] [stdout]    = note: this error originates in the macro `breadth_first_zip_macros::implement_flatten` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for type `usize` in the current scope
[INFO] [stdout]    --> src/lib.rs:149:61
[INFO] [stdout]     |
[INFO] [stdout] 149 |                 .next(index_sum.checked_sub(self.iter.index.get())?)
[INFO] [stdout]     |                                                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `ge` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/cmp.rs:1221:5
[INFO] [stdout] help: trait `SliceIndex` which provides `get` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 45  + use std::slice::SliceIndex;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for type `usize` in the current scope
[INFO] [stdout]    --> src/lib.rs:153:30
[INFO] [stdout]     |
[INFO] [stdout] 153 |             (self.iter.index.get() < index_sum).then(|| self.iter.next())??; // Comparison is just an optimization, not logically necessary
[INFO] [stdout]     |                              ^^^
[INFO] [stdout]    --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/slice/index.rs:176:8
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method is available for `usize` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `ge` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/30f74ff0dc4d66debc8b50724c446f817e5f75f4/library/core/src/cmp.rs:1221:5
[INFO] [stdout] help: trait `SliceIndex` which provides `get` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 45  + use std::slice::SliceIndex;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:230:1
[INFO] [stdout]     |
[INFO] [stdout] 230 | breadth_first_zip_macros::implement!(); // Implement traits for (A,), (A, B), (A, B, C), (A, B, C, D), ...
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | |
[INFO] [stdout]     | expected type parameter `A`, found `(_,)`
[INFO] [stdout]     | this expression has type `A`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type parameter `A`
[INFO] [stdout]                         found tuple `(_,)`
[INFO] [stdout]     = note: this error originates in the macro `breadth_first_zip_macros::implement` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `self.iter` as mutable, as it is behind a `&` reference
[INFO] [stdout]    --> src/lib.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |         self.iter.restart();
[INFO] [stdout]     |         ^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing this to be a mutable reference
[INFO] [stdout]     |
[INFO] [stdout] 94  |     fn rewind(&mut self);
[INFO] [stdout]     |               ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `self.iter` as mutable, as it is behind a `&` reference
[INFO] [stdout]    --> src/lib.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |         self.iter.restart();
[INFO] [stdout]     |         ^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing this to be a mutable reference
[INFO] [stdout]     |
[INFO] [stdout] 94  |     fn rewind(&mut self);
[INFO] [stdout]     |               ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0596, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `breadth-first-zip` (lib) due to 6 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0596, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `breadth-first-zip` (lib test) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "3d168ef79de26a8462530068652832cd35ff8dd78d4277ded024b10892f4f5e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d168ef79de26a8462530068652832cd35ff8dd78d4277ded024b10892f4f5e7", kill_on_drop: false }`
[INFO] [stdout] 3d168ef79de26a8462530068652832cd35ff8dd78d4277ded024b10892f4f5e7
[INFO] checking breadth-first-zip-0.3.0 against try#72eda894eb3548c7ba774079ce0afab42958d4ee for pr-121848-1
[INFO] extracting crate breadth-first-zip 0.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate breadth-first-zip 0.3.0 on toolchain 72eda894eb3548c7ba774079ce0afab42958d4ee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate breadth-first-zip 0.3.0
[INFO] finished tweaking crates.io crate breadth-first-zip 0.3.0
[INFO] tweaked toml for crates.io crate breadth-first-zip 0.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fe0571927524d0e5185a14fdb2cfde60c8f70d40ea860e892e3efe4ac4c2174
[INFO] running `Command { std: "docker" "start" "-a" "5fe0571927524d0e5185a14fdb2cfde60c8f70d40ea860e892e3efe4ac4c2174", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fe0571927524d0e5185a14fdb2cfde60c8f70d40ea860e892e3efe4ac4c2174", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fe0571927524d0e5185a14fdb2cfde60c8f70d40ea860e892e3efe4ac4c2174", kill_on_drop: false }`
[INFO] [stdout] 5fe0571927524d0e5185a14fdb2cfde60c8f70d40ea860e892e3efe4ac4c2174
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+72eda894eb3548c7ba774079ce0afab42958d4ee" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8b4031628ba73930651dbb28d5278379a5e89d795eab01e9585d914f2dff82cb
[INFO] running `Command { std: "docker" "start" "-a" "8b4031628ba73930651dbb28d5278379a5e89d795eab01e9585d914f2dff82cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling reiterator v0.3.0
[INFO] [stderr]    Compiling breadth-first-zip-macros v0.3.0
[INFO] [stderr]    Compiling breadth-first-zip v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getrandom v0.2.12
[INFO] [stderr]     Checking regex-automata v0.4.6
[INFO] [stderr]    Compiling syn v2.0.57
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.10.4
[INFO] [stderr]     Checking env_logger v0.8.4
[INFO] [stderr]     Checking quickcheck v1.0.3
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | breadth_first_zip_macros::implement_flatten!();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    | |
[INFO] [stdout]    | expected type parameter `B`, found `(_,)`
[INFO] [stdout]    | this expression has type `B`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected type parameter `B`
[INFO] [stdout]                        found tuple `(_,)`
[INFO] [stdout]    = note: this error originates in the macro `breadth_first_zip_macros::implement_flatten` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for type `usize` in the current scope
[INFO] [stdout]    --> src/lib.rs:149:61
[INFO] [stdout]     |
[INFO] [stdout] 149 |                 .next(index_sum.checked_sub(self.iter.index.get())?)
[INFO] [stdout]     |                                                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `ge` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/cmp.rs:1221:5
[INFO] [stdout] help: trait `SliceIndex` which provides `get` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 45  + use core::slice::SliceIndex;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for type `usize` in the current scope
[INFO] [stdout]    --> src/lib.rs:153:30
[INFO] [stdout]     |
[INFO] [stdout] 153 |             (self.iter.index.get() < index_sum).then(|| self.iter.next())??; // Comparison is just an optimization, not logically necessary
[INFO] [stdout]     |                              ^^^
[INFO] [stdout]    --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/slice/index.rs:176:8
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method is available for `usize` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `ge` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/cmp.rs:1221:5
[INFO] [stdout] help: trait `SliceIndex` which provides `get` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 45  + use core::slice::SliceIndex;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:230:1
[INFO] [stdout]     |
[INFO] [stdout] 230 | breadth_first_zip_macros::implement!(); // Implement traits for (A,), (A, B), (A, B, C), (A, B, C, D), ...
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | |
[INFO] [stdout]     | expected type parameter `A`, found `(_,)`
[INFO] [stdout]     | this expression has type `A`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type parameter `A`
[INFO] [stdout]                         found tuple `(_,)`
[INFO] [stdout]     = note: this error originates in the macro `breadth_first_zip_macros::implement` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/lib.rs:67:1
[INFO] [stdout]    |
[INFO] [stdout] 67 | breadth_first_zip_macros::implement_flatten!();
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    | |
[INFO] [stdout]    | expected type parameter `B`, found `(_,)`
[INFO] [stdout]    | this expression has type `B`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected type parameter `B`
[INFO] [stdout]                        found tuple `(_,)`
[INFO] [stdout]    = note: this error originates in the macro `breadth_first_zip_macros::implement_flatten` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for type `usize` in the current scope
[INFO] [stdout]    --> src/lib.rs:149:61
[INFO] [stdout]     |
[INFO] [stdout] 149 |                 .next(index_sum.checked_sub(self.iter.index.get())?)
[INFO] [stdout]     |                                                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `ge` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/cmp.rs:1221:5
[INFO] [stdout] help: trait `SliceIndex` which provides `get` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 45  + use std::slice::SliceIndex;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `get` found for type `usize` in the current scope
[INFO] [stdout]    --> src/lib.rs:153:30
[INFO] [stdout]     |
[INFO] [stdout] 153 |             (self.iter.index.get() < index_sum).then(|| self.iter.next())??; // Comparison is just an optimization, not logically necessary
[INFO] [stdout]     |                              ^^^
[INFO] [stdout]    --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/slice/index.rs:176:8
[INFO] [stdout]     |
[INFO] [stdout]     = note: the method is available for `usize` here
[INFO] [stdout]     |
[INFO] [stdout]     = help: items from traits can only be used if the trait is in scope
[INFO] [stdout] help: there is a method `ge` with a similar name, but with different arguments
[INFO] [stdout]    --> /rustc/72eda894eb3548c7ba774079ce0afab42958d4ee/library/core/src/cmp.rs:1221:5
[INFO] [stdout] help: trait `SliceIndex` which provides `get` is implemented but not in scope; perhaps you want to import it
[INFO] [stdout]     |
[INFO] [stdout] 45  + use std::slice::SliceIndex;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:230:1
[INFO] [stdout]     |
[INFO] [stdout] 230 | breadth_first_zip_macros::implement!(); // Implement traits for (A,), (A, B), (A, B, C), (A, B, C, D), ...
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     | |
[INFO] [stdout]     | expected type parameter `A`, found `(_,)`
[INFO] [stdout]     | this expression has type `A`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected type parameter `A`
[INFO] [stdout]                         found tuple `(_,)`
[INFO] [stdout]     = note: this error originates in the macro `breadth_first_zip_macros::implement` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `self.iter` as mutable, as it is behind a `&` reference
[INFO] [stdout]    --> src/lib.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |         self.iter.restart();
[INFO] [stdout]     |         ^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing this to be a mutable reference
[INFO] [stdout]     |
[INFO] [stdout] 94  |     fn rewind(&mut self);
[INFO] [stdout]     |               ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0596]: cannot borrow `self.iter` as mutable, as it is behind a `&` reference
[INFO] [stdout]    --> src/lib.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |         self.iter.restart();
[INFO] [stdout]     |         ^^^^^^^^^ `self` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stdout]     |
[INFO] [stdout] help: consider changing this to be a mutable reference
[INFO] [stdout]     |
[INFO] [stdout] 94  |     fn rewind(&mut self);
[INFO] [stdout]     |               ~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0596, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `breadth-first-zip` (lib) due to 6 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 5 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0596, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `breadth-first-zip` (lib test) due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "8b4031628ba73930651dbb28d5278379a5e89d795eab01e9585d914f2dff82cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b4031628ba73930651dbb28d5278379a5e89d795eab01e9585d914f2dff82cb", kill_on_drop: false }`
[INFO] [stdout] 8b4031628ba73930651dbb28d5278379a5e89d795eab01e9585d914f2dff82cb
