[INFO] cloning repository https://github.com/pwnsquad/yobmef
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pwnsquad/yobmef" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwnsquad%2Fyobmef", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwnsquad%2Fyobmef'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c5eba87582fe4619c0c80cfbc6e878ad47bcade4
[INFO] checking pwnsquad/yobmef against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpwnsquad%2Fyobmef" "/workspace/builds/worker-53/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-53/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pwnsquad/yobmef on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/pwnsquad/yobmef
[INFO] finished tweaking git repo https://github.com/pwnsquad/yobmef
[INFO] tweaked toml for git repo https://github.com/pwnsquad/yobmef written to /workspace/builds/worker-53/source/Cargo.toml
[INFO] crate git repo https://github.com/pwnsquad/yobmef already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 967a64b8ad8bbc46e9f90d37d223380454933ef4951ec3d07b69633455ba39b4
[INFO] running `Command { std: "docker" "start" "-a" "967a64b8ad8bbc46e9f90d37d223380454933ef4951ec3d07b69633455ba39b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "967a64b8ad8bbc46e9f90d37d223380454933ef4951ec3d07b69633455ba39b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "967a64b8ad8bbc46e9f90d37d223380454933ef4951ec3d07b69633455ba39b4", kill_on_drop: false }`
[INFO] [stdout] 967a64b8ad8bbc46e9f90d37d223380454933ef4951ec3d07b69633455ba39b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aee8176aa4207cfbe99ddc44307cefa87096601bfc7f59f05416eccd32c0f4c2
[INFO] running `Command { std: "docker" "start" "-a" "aee8176aa4207cfbe99ddc44307cefa87096601bfc7f59f05416eccd32c0f4c2", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.2
[INFO] [stderr]     Checking yobmef v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/lib.rs from 2018 edition to 2021
[INFO] [stderr] warning: failed to automatically apply fixes suggested by rustc to crate `yobmef`
[INFO] [stderr] 
[INFO] [stderr] after fixes were automatically applied the compiler reported errors within these files:
[INFO] [stderr] 
[INFO] [stderr]   * src/bitboard.rs
[INFO] [stderr] 
[INFO] [stderr] This likely indicates a bug in either rustc or cargo itself,
[INFO] [stderr] and we would appreciate a bug report! You're likely to see 
[INFO] [stderr] a number of compiler warnings after this message which cargo
[INFO] [stderr] attempted to fix but failed. If you could open an issue at
[INFO] [stderr] https://github.com/rust-lang/rust/issues
[INFO] [stderr] quoting the full output of this command we'd be very appreciative!
[INFO] [stderr] Note that you may be able to make some more progress in the near-term
[INFO] [stderr] fixing code with the `--broken-code` flag
[INFO] [stderr] 
[INFO] [stderr] The following errors were reported:
[INFO] [stderr] error: `let` expressions are not supported here
[INFO] [stderr]    --> src/bitboard.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 184 | impl_op_assign!(BitOrAssign, bitor_assign);
[INFO] [stderr]     | ------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: only supported directly in conditions of `if`- and `while`-expressions
[INFO] [stderr]     = note: as well as when nested within `&&` and parenthesis in those conditions
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: `let` expressions are not supported here
[INFO] [stderr]    --> src/bitboard.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 187 | impl_op_assign!(BitXorAssign, bitxor_assign);
[INFO] [stderr]     | --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: only supported directly in conditions of `if`- and `while`-expressions
[INFO] [stderr]     = note: as well as when nested within `&&` and parenthesis in those conditions
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: `let` expressions are not supported here
[INFO] [stderr]    --> src/bitboard.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 190 | impl_op_assign!(BitAndAssign, bitand_assign);
[INFO] [stderr]     | --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: only supported directly in conditions of `if`- and `while`-expressions
[INFO] [stderr]     = note: as well as when nested within `&&` and parenthesis in those conditions
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: `let` expressions are not supported here
[INFO] [stderr]    --> src/bitboard.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 193 | impl_op_assign!(ShlAssign, shl_assign);
[INFO] [stderr]     | --------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: only supported directly in conditions of `if`- and `while`-expressions
[INFO] [stderr]     = note: as well as when nested within `&&` and parenthesis in those conditions
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: `let` expressions are not supported here
[INFO] [stderr]    --> src/bitboard.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 196 | impl_op_assign!(ShrAssign, shr_assign);
[INFO] [stderr]     | --------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: only supported directly in conditions of `if`- and `while`-expressions
[INFO] [stderr]     = note: as well as when nested within `&&` and parenthesis in those conditions
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:49
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 184 | impl_op_assign!(BitOrAssign, bitor_assign);
[INFO] [stderr]     | ------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:41
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 184 | impl_op_assign!(BitOrAssign, bitor_assign);
[INFO] [stderr]     | ------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:33
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 184 | impl_op_assign!(BitOrAssign, bitor_assign);
[INFO] [stderr]     | ------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 184 | impl_op_assign!(BitOrAssign, bitor_assign);
[INFO] [stderr]     | ------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:49
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 187 | impl_op_assign!(BitXorAssign, bitxor_assign);
[INFO] [stderr]     | --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:41
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 187 | impl_op_assign!(BitXorAssign, bitxor_assign);
[INFO] [stderr]     | --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:33
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 187 | impl_op_assign!(BitXorAssign, bitxor_assign);
[INFO] [stderr]     | --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 187 | impl_op_assign!(BitXorAssign, bitxor_assign);
[INFO] [stderr]     | --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:49
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 190 | impl_op_assign!(BitAndAssign, bitand_assign);
[INFO] [stderr]     | --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:41
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 190 | impl_op_assign!(BitAndAssign, bitand_assign);
[INFO] [stderr]     | --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:33
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 190 | impl_op_assign!(BitAndAssign, bitand_assign);
[INFO] [stderr]     | --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 190 | impl_op_assign!(BitAndAssign, bitand_assign);
[INFO] [stderr]     | --------------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:49
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 193 | impl_op_assign!(ShlAssign, shl_assign);
[INFO] [stderr]     | --------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:41
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 193 | impl_op_assign!(ShlAssign, shl_assign);
[INFO] [stderr]     | --------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:33
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 193 | impl_op_assign!(ShlAssign, shl_assign);
[INFO] [stderr]     | --------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 193 | impl_op_assign!(ShlAssign, shl_assign);
[INFO] [stderr]     | --------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:49
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 196 | impl_op_assign!(ShrAssign, shr_assign);
[INFO] [stderr]     | --------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:41
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 196 | impl_op_assign!(ShrAssign, shr_assign);
[INFO] [stderr]     | --------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:33
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 196 | impl_op_assign!(ShrAssign, shr_assign);
[INFO] [stderr]     | --------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: `let` expressions in this position are experimental
[INFO] [stderr]    --> src/bitboard.rs:157:25
[INFO] [stderr]     |
[INFO] [stderr] 157 |                 let _ = let _ = let _ = let _ = let _ = &self.0.$fun(rhs.0);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 196 | impl_op_assign!(ShrAssign, shr_assign);
[INFO] [stderr]     | --------------------------------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
[INFO] [stderr]     = help: add `#![feature(let_chains)]` to the crate attributes to enable
[INFO] [stderr]     = help: you can write `matches!(<expr>, <pattern>)` instead of `let <pattern> = <expr>`
[INFO] [stderr]     = note: this error originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 25 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0658`.
[INFO] [stderr] Original diagnostics will follow.
[INFO] [stderr] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 184 | impl_op_assign!(BitOrAssign, bitor_assign);
[INFO] [stdout]     | ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 187 | impl_op_assign!(BitXorAssign, bitxor_assign);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 190 | impl_op_assign!(BitAndAssign, bitand_assign);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 193 | impl_op_assign!(ShlAssign, shl_assign);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 196 | impl_op_assign!(ShrAssign, shr_assign);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating src/bin/perft_debug.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/perft_test.rs from 2018 edition to 2021
[INFO] [stderr]    Migrating tests/searcher_test.rs from 2018 edition to 2021
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 184 | impl_op_assign!(BitOrAssign, bitor_assign);
[INFO] [stdout]     | ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 187 | impl_op_assign!(BitXorAssign, bitxor_assign);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 190 | impl_op_assign!(BitAndAssign, bitand_assign);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 193 | impl_op_assign!(ShlAssign, shl_assign);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 196 | impl_op_assign!(ShrAssign, shr_assign);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 13.31s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking yobmef v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 184 | impl_op_assign!(BitOrAssign, bitor_assign);
[INFO] [stdout]     | ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 187 | impl_op_assign!(BitXorAssign, bitxor_assign);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 190 | impl_op_assign!(BitAndAssign, bitand_assign);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 193 | impl_op_assign!(ShlAssign, shl_assign);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 196 | impl_op_assign!(ShrAssign, shr_assign);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 184 | impl_op_assign!(BitOrAssign, bitor_assign);
[INFO] [stdout]     | ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 187 | impl_op_assign!(BitXorAssign, bitxor_assign);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 190 | impl_op_assign!(BitAndAssign, bitand_assign);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 193 | impl_op_assign!(ShlAssign, shl_assign);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/bitboard.rs:157:17
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 196 | impl_op_assign!(ShrAssign, shr_assign);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_op_assign` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 157 |                 let _ = &self.0.$fun(rhs.0);
[INFO] [stdout]     |                 +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "aee8176aa4207cfbe99ddc44307cefa87096601bfc7f59f05416eccd32c0f4c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aee8176aa4207cfbe99ddc44307cefa87096601bfc7f59f05416eccd32c0f4c2", kill_on_drop: false }`
[INFO] [stdout] aee8176aa4207cfbe99ddc44307cefa87096601bfc7f59f05416eccd32c0f4c2