[INFO] fetching crate z3d 0.1.0...
[INFO] testing z3d-0.1.0 against master#562dee4820c458d823175268e41601d4c060588a for pr-154210-2
[INFO] extracting crate z3d 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate z3d 0.1.0
[INFO] finished tweaking crates.io crate z3d 0.1.0
[INFO] tweaked toml for crates.io crate z3d 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate z3d 0.1.0 on toolchain 562dee4820c458d823175268e41601d4c060588a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 9 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.117)
[INFO] [stderr]       Adding z3 v0.4.0 (available: v0.20.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded z3 v0.4.0
[INFO] [stderr]   Downloaded assert_matches v1.5.0
[INFO] [stderr]   Downloaded z3-sys v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 76b4f3354123cf94b0e3ace0a08026f85e6fa057912afccec5a12c2ff20a7087
[INFO] running `Command { std: "docker" "start" "-a" "76b4f3354123cf94b0e3ace0a08026f85e6fa057912afccec5a12c2ff20a7087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "76b4f3354123cf94b0e3ace0a08026f85e6fa057912afccec5a12c2ff20a7087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76b4f3354123cf94b0e3ace0a08026f85e6fa057912afccec5a12c2ff20a7087", kill_on_drop: false }`
[INFO] [stdout] 76b4f3354123cf94b0e3ace0a08026f85e6fa057912afccec5a12c2ff20a7087
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d6237712f327d032babd31df028e24ee2f89046615b697c39077aa991172a97
[INFO] running `Command { std: "docker" "start" "-a" "3d6237712f327d032babd31df028e24ee2f89046615b697c39077aa991172a97", kill_on_drop: false }`
[INFO] [stderr]    Compiling z3-sys v0.5.0
[INFO] [stderr]    Compiling log v0.4.29
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling z3 v0.4.0
[INFO] [stderr]    Compiling z3d v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]    --> src/exp.rs:276:5
[INFO] [stdout]     |
[INFO] [stdout] 275 | pub struct ParenExpr {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 276 |     paren: syn::token::Paren,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParenExpr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace` is never read
[INFO] [stdout]    --> src/exp.rs:302:5
[INFO] [stdout]     |
[INFO] [stdout] 301 | pub struct RustExpr {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 302 |     brace: syn::token::Brace,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RustExpr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `proc_macro_hygiene` is declared but not used
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.51s
[INFO] running `Command { std: "docker" "inspect" "3d6237712f327d032babd31df028e24ee2f89046615b697c39077aa991172a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d6237712f327d032babd31df028e24ee2f89046615b697c39077aa991172a97", kill_on_drop: false }`
[INFO] [stdout] 3d6237712f327d032babd31df028e24ee2f89046615b697c39077aa991172a97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] de810c94d9ed83d8ad37cfa14cb318f19ba069da4dc1a208e2ff49680b92e29c
[INFO] running `Command { std: "docker" "start" "-a" "de810c94d9ed83d8ad37cfa14cb318f19ba069da4dc1a208e2ff49680b92e29c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.106
[INFO] [stderr]    Compiling z3-sys v0.5.0
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling assert_matches v1.5.0
[INFO] [stderr]    Compiling z3 v0.4.0
[INFO] [stderr]    Compiling z3d v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]    --> src/exp.rs:276:5
[INFO] [stdout]     |
[INFO] [stdout] 275 | pub struct ParenExpr {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 276 |     paren: syn::token::Paren,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParenExpr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace` is never read
[INFO] [stdout]    --> src/exp.rs:302:5
[INFO] [stdout]     |
[INFO] [stdout] 301 | pub struct RustExpr {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 302 |     brace: syn::token::Brace,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RustExpr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `paren` is never read
[INFO] [stdout]    --> src/exp.rs:276:5
[INFO] [stdout]     |
[INFO] [stdout] 275 | pub struct ParenExpr {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 276 |     paren: syn::token::Paren,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ParenExpr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `brace` is never read
[INFO] [stdout]    --> src/exp.rs:302:5
[INFO] [stdout]     |
[INFO] [stdout] 301 | pub struct RustExpr {
[INFO] [stdout]     |            -------- field in this struct
[INFO] [stdout] 302 |     brace: syn::token::Brace,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `RustExpr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/exp.rs:860:14
[INFO] [stdout]     |
[INFO] [stdout] 860 |             .into_iter()
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 860 -             .into_iter()
[INFO] [stdout] 860 +             .iter()
[INFO] [stdout]     |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 859 -         let rest: Vec<Expr> = ["arg3", "arg4", "arg5"]
[INFO] [stdout] 860 -             .into_iter()
[INFO] [stdout] 859 +         let rest: Vec<Expr> = IntoIterator::into_iter(["arg3", "arg4", "arg5"])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stdout]    --> src/exp.rs:899:14
[INFO] [stdout]     |
[INFO] [stdout] 899 |             .into_iter()
[INFO] [stdout]     |              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 899 -             .into_iter()
[INFO] [stdout] 899 +             .iter()
[INFO] [stdout]     |
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 898 -         let rest: Vec<Expr> = ["arg3", "arg4", "arg5"]
[INFO] [stdout] 899 -             .into_iter()
[INFO] [stdout] 898 +         let rest: Vec<Expr> = IntoIterator::into_iter(["arg3", "arg4", "arg5"])
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `proc_macro_hygiene` is declared but not used
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `proc_macro_hygiene` is declared but not used
[INFO] [stdout]  --> src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: feature `proc_macro_hygiene` is declared but not used
[INFO] [stdout]  --> tests/dec.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.82s
[INFO] running `Command { std: "docker" "inspect" "de810c94d9ed83d8ad37cfa14cb318f19ba069da4dc1a208e2ff49680b92e29c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de810c94d9ed83d8ad37cfa14cb318f19ba069da4dc1a208e2ff49680b92e29c", kill_on_drop: false }`
[INFO] [stdout] de810c94d9ed83d8ad37cfa14cb318f19ba069da4dc1a208e2ff49680b92e29c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+562dee4820c458d823175268e41601d4c060588a" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 35c320642f77749b03c434cf60b7f3754f1e04c37f69521155486cc546fb8e1c
[INFO] running `Command { std: "docker" "start" "-a" "35c320642f77749b03c434cf60b7f3754f1e04c37f69521155486cc546fb8e1c", kill_on_drop: false }`
[INFO] [stderr] warning: field `paren` is never read
[INFO] [stderr]    --> src/exp.rs:276:5
[INFO] [stderr]     |
[INFO] [stderr] 275 | pub struct ParenExpr {
[INFO] [stderr]     |            --------- field in this struct
[INFO] [stderr] 276 |     paren: syn::token::Paren,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `ParenExpr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field `brace` is never read
[INFO] [stderr]    --> src/exp.rs:302:5
[INFO] [stderr]     |
[INFO] [stderr] 301 | pub struct RustExpr {
[INFO] [stderr]     |            -------- field in this struct
[INFO] [stderr] 302 |     brace: syn::token::Brace,
[INFO] [stderr]     |     ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `RustExpr` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr] 
[INFO] [stderr] warning: feature `proc_macro_hygiene` is declared but not used
[INFO] [stderr]  --> src/lib.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(proc_macro_hygiene)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stderr]    --> src/exp.rs:860:14
[INFO] [stderr]     |
[INFO] [stderr] 860 |             .into_iter()
[INFO] [stderr]     |              ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr]     = note: `#[warn(array_into_iter)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 860 -             .into_iter()
[INFO] [stderr] 860 +             .iter()
[INFO] [stderr]     |
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 859 -         let rest: Vec<Expr> = ["arg3", "arg4", "arg5"]
[INFO] [stderr] 860 -             .into_iter()
[INFO] [stderr] 859 +         let rest: Vec<Expr> = IntoIterator::into_iter(["arg3", "arg4", "arg5"])
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to `<[T; N] as IntoIterator>::into_iter` in Rust 2021
[INFO] [stderr]    --> src/exp.rs:899:14
[INFO] [stderr]     |
[INFO] [stderr] 899 |             .into_iter()
[INFO] [stderr]     |              ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 899 -             .into_iter()
[INFO] [stderr] 899 +             .iter()
[INFO] [stderr]     |
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 898 -         let rest: Vec<Expr> = ["arg3", "arg4", "arg5"]
[INFO] [stderr] 899 -             .into_iter()
[INFO] [stderr] 898 +         let rest: Vec<Expr> = IntoIterator::into_iter(["arg3", "arg4", "arg5"])
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `z3d` (lib) generated 3 warnings
[INFO] [stderr] warning: `z3d` (lib test) generated 5 warnings (3 duplicates) (run `cargo fix --lib -p z3d --tests` to apply 2 suggestions)
[INFO] [stderr] warning: feature `proc_macro_hygiene` is declared but not used
[INFO] [stderr]  --> tests/dec.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_features)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `z3d` (test "dec") generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/z3d-9f7e53fed752816c)
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test dec::const_decl_parse_tests::simple_bool ... ok
[INFO] [stdout] test dec::const_decl_parse_tests::simple_bitvec ... ok
[INFO] [stdout] test dec::const_decl_parse_tests::bitvec_with_formatted_name ... ok
[INFO] [stdout] test dec::const_decl_parse_tests::lit_formatted_name ... ok
[INFO] [stdout] test exp::expr_parse_tests::atom_operand ... ok
[INFO] [stdout] test dec::const_decl_parse_tests::simple_int ... ok
[INFO] [stdout] test dec::const_decl_parse_tests::misc_formatted_name ... ok
[INFO] [stdout] test exp::expr_parse_tests::bool_atom ... ok
[INFO] [stdout] test exp::expr_parse_tests::ident_atom ... ok
[INFO] [stdout] test exp::expr_parse_tests::int_atom ... ok
[INFO] [stdout] test exp::expr_parse_tests::add_series ... ok
[INFO] [stdout] test exp::expr_parse_tests::misc_binary_and_unary ... ok
[INFO] [stdout] test exp::expr_parse_tests::paren_atom_operand ... ok
[INFO] [stdout] test exp::to_expr_tokens_tests::cast_ident_to_bitvec ... ok
[INFO] [stdout] test exp::to_expr_tokens_tests::cast_int_to_bitvec ... ok
[INFO] [stdout] test exp::to_expr_tokens_tests::distinct ... ok
[INFO] [stdout] test exp::to_expr_tokens_tests::variadic_bvor ... ok
[INFO] [stdout] test exp::to_expr_tokens_tests::range ... ok
[INFO] [stdout] test exp::expr_parse_tests::varop_expr ... ok
[INFO] [stdout] test exp::expr_parse_tests::many_omitted_parens ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/dec.rs (/opt/rustwide/target/debug/deps/dec-7736f8fb60a44bec)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test modus_tollens ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests z3d
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/dec.rs - dec::macro_main (line 103) ... ignored
[INFO] [stdout] test src/exp.rs - exp::macro_main (line 585) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "35c320642f77749b03c434cf60b7f3754f1e04c37f69521155486cc546fb8e1c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35c320642f77749b03c434cf60b7f3754f1e04c37f69521155486cc546fb8e1c", kill_on_drop: false }`
[INFO] [stdout] 35c320642f77749b03c434cf60b7f3754f1e04c37f69521155486cc546fb8e1c