[INFO] fetching crate ducc 0.1.5...
[INFO] checking ducc-0.1.5 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate ducc 0.1.5 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ducc 0.1.5 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ducc 0.1.5
[INFO] finished tweaking crates.io crate ducc 0.1.5
[INFO] tweaked toml for crates.io crate ducc 0.1.5 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 537055dc770b413614316fbf0dcbfbff0f23b9da5e3be0adf0e7027d4710872e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "537055dc770b413614316fbf0dcbfbff0f23b9da5e3be0adf0e7027d4710872e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "537055dc770b413614316fbf0dcbfbff0f23b9da5e3be0adf0e7027d4710872e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "537055dc770b413614316fbf0dcbfbff0f23b9da5e3be0adf0e7027d4710872e", kill_on_drop: false }`
[INFO] [stdout] 537055dc770b413614316fbf0dcbfbff0f23b9da5e3be0adf0e7027d4710872e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9604ee478552e8e05f5de4be6e89aedf6a682d3a3705868bebd413789ebdbb5e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9604ee478552e8e05f5de4be6e89aedf6a682d3a3705868bebd413789ebdbb5e", kill_on_drop: false }`
[INFO] [stderr]     Checking cesu8 v1.1.0
[INFO] [stderr]    Compiling ducc-sys v0.1.2
[INFO] [stderr]     Checking ducc v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 419 | impl_tuple!(A);
[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_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 419 | impl_tuple!(A);
[INFO] [stdout]     | --------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 420 | impl_tuple!(A, B);
[INFO] [stdout]     | ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 420 | impl_tuple!(A, B);
[INFO] [stdout]     | ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 421 | impl_tuple!(A, B, C);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 421 | impl_tuple!(A, B, C);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 422 | impl_tuple!(A, B, C, D);
[INFO] [stdout]     | ------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 422 | impl_tuple!(A, B, C, D);
[INFO] [stdout]     | ------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 423 | impl_tuple!(A, B, C, D, E);
[INFO] [stdout]     | --------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 423 | impl_tuple!(A, B, C, D, E);
[INFO] [stdout]     | --------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 424 | impl_tuple!(A, B, C, D, E, F);
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 424 | impl_tuple!(A, B, C, D, E, F);
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 425 | impl_tuple!(A, B, C, D, E, F, G);
[INFO] [stdout]     | --------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 425 | impl_tuple!(A, B, C, D, E, F, G);
[INFO] [stdout]     | --------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 426 | impl_tuple!(A, B, C, D, E, F, G, H);
[INFO] [stdout]     | ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 426 | impl_tuple!(A, B, C, D, E, F, G, H);
[INFO] [stdout]     | ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 427 | impl_tuple!(A, B, C, D, E, F, G, H, I);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 427 | impl_tuple!(A, B, C, D, E, F, G, H, I);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 428 | impl_tuple!(A, B, C, D, E, F, G, H, I, J);
[INFO] [stdout]     | ------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 428 | impl_tuple!(A, B, C, D, E, F, G, H, I, J);
[INFO] [stdout]     | ------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 429 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 429 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 430 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L);
[INFO] [stdout]     | ------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 430 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L);
[INFO] [stdout]     | ------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 431 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M);
[INFO] [stdout]     | --------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 431 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M);
[INFO] [stdout]     | --------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 432 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N);
[INFO] [stdout]     | ------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 432 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N);
[INFO] [stdout]     | ------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 433 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O);
[INFO] [stdout]     | --------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 433 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O);
[INFO] [stdout]     | --------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 434 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P);
[INFO] [stdout]     | ------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 434 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P);
[INFO] [stdout]     | ------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 419 | impl_tuple!(A);
[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_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 419 | impl_tuple!(A);
[INFO] [stdout]     | --------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 420 | impl_tuple!(A, B);
[INFO] [stdout]     | ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 420 | impl_tuple!(A, B);
[INFO] [stdout]     | ------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 421 | impl_tuple!(A, B, C);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 421 | impl_tuple!(A, B, C);
[INFO] [stdout]     | --------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 422 | impl_tuple!(A, B, C, D);
[INFO] [stdout]     | ------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 422 | impl_tuple!(A, B, C, D);
[INFO] [stdout]     | ------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 423 | impl_tuple!(A, B, C, D, E);
[INFO] [stdout]     | --------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 423 | impl_tuple!(A, B, C, D, E);
[INFO] [stdout]     | --------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 424 | impl_tuple!(A, B, C, D, E, F);
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 424 | impl_tuple!(A, B, C, D, E, F);
[INFO] [stdout]     | ------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 425 | impl_tuple!(A, B, C, D, E, F, G);
[INFO] [stdout]     | --------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 425 | impl_tuple!(A, B, C, D, E, F, G);
[INFO] [stdout]     | --------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 426 | impl_tuple!(A, B, C, D, E, F, G, H);
[INFO] [stdout]     | ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 426 | impl_tuple!(A, B, C, D, E, F, G, H);
[INFO] [stdout]     | ------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 427 | impl_tuple!(A, B, C, D, E, F, G, H, I);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 427 | impl_tuple!(A, B, C, D, E, F, G, H, I);
[INFO] [stdout]     | --------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 428 | impl_tuple!(A, B, C, D, E, F, G, H, I, J);
[INFO] [stdout]     | ------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 428 | impl_tuple!(A, B, C, D, E, F, G, H, I, J);
[INFO] [stdout]     | ------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 429 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 429 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K);
[INFO] [stdout]     | --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 430 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L);
[INFO] [stdout]     | ------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 430 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L);
[INFO] [stdout]     | ------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 431 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M);
[INFO] [stdout]     | --------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 431 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M);
[INFO] [stdout]     | --------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 432 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N);
[INFO] [stdout]     | ------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 432 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N);
[INFO] [stdout]     | ------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 433 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O);
[INFO] [stdout]     | --------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 433 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O);
[INFO] [stdout]     | --------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:348:39
[INFO] [stdout]     |
[INFO] [stdout] 348 |                 let reservation = $({ &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 434 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P);
[INFO] [stdout]     | ------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 348 |                 let reservation = $({ let _ = &$name; 1 } +)* 0;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/conversion.rs:377:39
[INFO] [stdout]     |
[INFO] [stdout] 377 |                 let reservation = $({ &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       ^^^^^^ the borrow produces a value
[INFO] [stdout] ...
[INFO] [stdout] 434 | impl_tuple!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P);
[INFO] [stdout]     | ------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `impl_tuple` (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] 377 |                 let reservation = $({ let _ = &$name; 1 } +)* 1;
[INFO] [stdout]     |                                       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 32 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.12s
[INFO] running `Command { std: "docker" "inspect" "9604ee478552e8e05f5de4be6e89aedf6a682d3a3705868bebd413789ebdbb5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9604ee478552e8e05f5de4be6e89aedf6a682d3a3705868bebd413789ebdbb5e", kill_on_drop: false }`
[INFO] [stdout] 9604ee478552e8e05f5de4be6e89aedf6a682d3a3705868bebd413789ebdbb5e
