[INFO] fetching crate pest_vm 2.1.0...
[INFO] checking pest_vm-2.1.0 against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] extracting crate pest_vm 2.1.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate pest_vm 2.1.0 on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pest_vm 2.1.0
[INFO] finished tweaking crates.io crate pest_vm 2.1.0
[INFO] tweaked toml for crates.io crate pest_vm 2.1.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 537184d081b247366947e226fb8a1bf41243022064d7e670ac6e122e337f9031
[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" "537184d081b247366947e226fb8a1bf41243022064d7e670ac6e122e337f9031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "537184d081b247366947e226fb8a1bf41243022064d7e670ac6e122e337f9031", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "537184d081b247366947e226fb8a1bf41243022064d7e670ac6e122e337f9031", kill_on_drop: false }`
[INFO] [stdout] 537184d081b247366947e226fb8a1bf41243022064d7e670ac6e122e337f9031
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2a264f900f3b757f4bae44911900558b1c98b45505af0014cfc1137424b4ca51
[INFO] running `Command { std: "docker" "start" "-a" "2a264f900f3b757f4bae44911900558b1c98b45505af0014cfc1137424b4ca51", kill_on_drop: false }`
[INFO] [stderr]     Checking ucd-trie v0.1.3
[INFO] [stderr]     Checking maplit v1.0.2
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking pest_meta v2.1.3
[INFO] [stderr]     Checking pest_vm v2.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/lists.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     parses_to! {
[INFO] [stdout] 30 | |         parser: vm(),
[INFO] [stdout] 31 | |         input: "- a",
[INFO] [stdout] 32 | |         rule: "lists",
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |         ]
[INFO] [stdout] 36 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/lists.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     parses_to! {
[INFO] [stdout] 30 | |         parser: vm(),
[INFO] [stdout] 31 | |         input: "- a",
[INFO] [stdout] 32 | |         rule: "lists",
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |         ]
[INFO] [stdout] 36 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/lists.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     parses_to! {
[INFO] [stdout] 42 | |         parser: vm(),
[INFO] [stdout] 43 | |         input: "- a\n- b",
[INFO] [stdout] 44 | |         rule: "lists",
[INFO] [stdout] ...  |
[INFO] [stdout] 48 | |         ]
[INFO] [stdout] 49 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/lists.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     parses_to! {
[INFO] [stdout] 42 | |         parser: vm(),
[INFO] [stdout] 43 | |         input: "- a\n- b",
[INFO] [stdout] 44 | |         rule: "lists",
[INFO] [stdout] ...  |
[INFO] [stdout] 48 | |         ]
[INFO] [stdout] 49 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/lists.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | /     parses_to! {
[INFO] [stdout] 55 | |         parser: vm(),
[INFO] [stdout] 56 | |         input: "  - b",
[INFO] [stdout] 57 | |         rule: "children",
[INFO] [stdout] ...  |
[INFO] [stdout] 62 | |         ]
[INFO] [stdout] 63 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/lists.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 | /     parses_to! {
[INFO] [stdout] 55 | |         parser: vm(),
[INFO] [stdout] 56 | |         input: "  - b",
[INFO] [stdout] 57 | |         rule: "children",
[INFO] [stdout] ...  |
[INFO] [stdout] 62 | |         ]
[INFO] [stdout] 63 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/lists.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | /     parses_to! {
[INFO] [stdout] 69 | |         parser: vm(),
[INFO] [stdout] 70 | |         input: "- a\n  - b",
[INFO] [stdout] 71 | |         rule: "lists",
[INFO] [stdout] ...  |
[INFO] [stdout] 77 | |         ]
[INFO] [stdout] 78 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/lists.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 | /     parses_to! {
[INFO] [stdout] 69 | |         parser: vm(),
[INFO] [stdout] 70 | |         input: "- a\n  - b",
[INFO] [stdout] 71 | |         rule: "lists",
[INFO] [stdout] ...  |
[INFO] [stdout] 77 | |         ]
[INFO] [stdout] 78 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/lists.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | /     parses_to! {
[INFO] [stdout] 84 | |         parser: vm(),
[INFO] [stdout] 85 | |         input: "- a\n  - b\n  - c",
[INFO] [stdout] 86 | |         rule: "lists",
[INFO] [stdout] ...  |
[INFO] [stdout] 93 | |         ]
[INFO] [stdout] 94 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/lists.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 | /     parses_to! {
[INFO] [stdout] 84 | |         parser: vm(),
[INFO] [stdout] 85 | |         input: "- a\n  - b\n  - c",
[INFO] [stdout] 86 | |         rule: "lists",
[INFO] [stdout] ...  |
[INFO] [stdout] 93 | |         ]
[INFO] [stdout] 94 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/lists.rs:99:5
[INFO] [stdout]     |
[INFO] [stdout] 99  | /     parses_to! {
[INFO] [stdout] 100 | |         parser: vm(),
[INFO] [stdout] 101 | |         input: "- a\n  - b\n    - c",
[INFO] [stdout] 102 | |         rule: "lists",
[INFO] [stdout] ...   |
[INFO] [stdout] 111 | |         ]
[INFO] [stdout] 112 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/lists.rs:99:5
[INFO] [stdout]     |
[INFO] [stdout] 99  | /     parses_to! {
[INFO] [stdout] 100 | |         parser: vm(),
[INFO] [stdout] 101 | |         input: "- a\n  - b\n    - c",
[INFO] [stdout] 102 | |         rule: "lists",
[INFO] [stdout] ...   |
[INFO] [stdout] 111 | |         ]
[INFO] [stdout] 112 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/lists.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 | /     parses_to! {
[INFO] [stdout] 118 | |         parser: vm(),
[INFO] [stdout] 119 | |         input: "- a\n  - b\n- c",
[INFO] [stdout] 120 | |         rule: "lists",
[INFO] [stdout] ...   |
[INFO] [stdout] 127 | |         ]
[INFO] [stdout] 128 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/lists.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 | /     parses_to! {
[INFO] [stdout] 118 | |         parser: vm(),
[INFO] [stdout] 119 | |         input: "- a\n  - b\n- c",
[INFO] [stdout] 120 | |         rule: "lists",
[INFO] [stdout] ...   |
[INFO] [stdout] 127 | |         ]
[INFO] [stdout] 128 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     parses_to! {
[INFO] [stdout] 30 | |         parser: vm(),
[INFO] [stdout] 31 | |         input: "abc",
[INFO] [stdout] 32 | |         rule: "string",
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |         ]
[INFO] [stdout] 36 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     parses_to! {
[INFO] [stdout] 30 | |         parser: vm(),
[INFO] [stdout] 31 | |         input: "abc",
[INFO] [stdout] 32 | |         rule: "string",
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |         ]
[INFO] [stdout] 36 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     parses_to! {
[INFO] [stdout] 42 | |         parser: vm(),
[INFO] [stdout] 43 | |         input: "aBC",
[INFO] [stdout] 44 | |         rule: "insensitive",
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |         ]
[INFO] [stdout] 48 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:41:5
[INFO] [stdout]    |
[INFO] [stdout] 41 | /     parses_to! {
[INFO] [stdout] 42 | |         parser: vm(),
[INFO] [stdout] 43 | |         input: "aBC",
[INFO] [stdout] 44 | |         rule: "insensitive",
[INFO] [stdout] ...  |
[INFO] [stdout] 47 | |         ]
[INFO] [stdout] 48 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | /     parses_to! {
[INFO] [stdout] 54 | |         parser: vm(),
[INFO] [stdout] 55 | |         input: "6",
[INFO] [stdout] 56 | |         rule: "range",
[INFO] [stdout] ...  |
[INFO] [stdout] 59 | |         ]
[INFO] [stdout] 60 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:53:5
[INFO] [stdout]    |
[INFO] [stdout] 53 | /     parses_to! {
[INFO] [stdout] 54 | |         parser: vm(),
[INFO] [stdout] 55 | |         input: "6",
[INFO] [stdout] 56 | |         rule: "range",
[INFO] [stdout] ...  |
[INFO] [stdout] 59 | |         ]
[INFO] [stdout] 60 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 | /     parses_to! {
[INFO] [stdout] 66 | |         parser: vm(),
[INFO] [stdout] 67 | |         input: "abc",
[INFO] [stdout] 68 | |         rule: "ident",
[INFO] [stdout] ...  |
[INFO] [stdout] 73 | |         ]
[INFO] [stdout] 74 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:65:5
[INFO] [stdout]    |
[INFO] [stdout] 65 | /     parses_to! {
[INFO] [stdout] 66 | |         parser: vm(),
[INFO] [stdout] 67 | |         input: "abc",
[INFO] [stdout] 68 | |         rule: "ident",
[INFO] [stdout] ...  |
[INFO] [stdout] 73 | |         ]
[INFO] [stdout] 74 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 | /     parses_to! {
[INFO] [stdout] 80 | |         parser: vm(),
[INFO] [stdout] 81 | |         input: "abc",
[INFO] [stdout] 82 | |         rule: "pos_pred",
[INFO] [stdout] ...  |
[INFO] [stdout] 85 | |         ]
[INFO] [stdout] 86 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:79:5
[INFO] [stdout]    |
[INFO] [stdout] 79 | /     parses_to! {
[INFO] [stdout] 80 | |         parser: vm(),
[INFO] [stdout] 81 | |         input: "abc",
[INFO] [stdout] 82 | |         rule: "pos_pred",
[INFO] [stdout] ...  |
[INFO] [stdout] 85 | |         ]
[INFO] [stdout] 86 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 | /     parses_to! {
[INFO] [stdout] 92 | |         parser: vm(),
[INFO] [stdout] 93 | |         input: "",
[INFO] [stdout] 94 | |         rule: "neg_pred",
[INFO] [stdout] ...  |
[INFO] [stdout] 97 | |         ]
[INFO] [stdout] 98 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/grammar.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 | /     parses_to! {
[INFO] [stdout] 92 | |         parser: vm(),
[INFO] [stdout] 93 | |         input: "",
[INFO] [stdout] 94 | |         rule: "neg_pred",
[INFO] [stdout] ...  |
[INFO] [stdout] 97 | |         ]
[INFO] [stdout] 98 | |     };
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 | /     parses_to! {
[INFO] [stdout] 104 | |         parser: vm(),
[INFO] [stdout] 105 | |         input: "abc",
[INFO] [stdout] 106 | |         rule: "double_neg_pred",
[INFO] [stdout] ...   |
[INFO] [stdout] 109 | |         ]
[INFO] [stdout] 110 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:103:5
[INFO] [stdout]     |
[INFO] [stdout] 103 | /     parses_to! {
[INFO] [stdout] 104 | |         parser: vm(),
[INFO] [stdout] 105 | |         input: "abc",
[INFO] [stdout] 106 | |         rule: "double_neg_pred",
[INFO] [stdout] ...   |
[INFO] [stdout] 109 | |         ]
[INFO] [stdout] 110 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | /     parses_to! {
[INFO] [stdout] 116 | |         parser: vm(),
[INFO] [stdout] 117 | |         input: "abc   abc",
[INFO] [stdout] 118 | |         rule: "sequence",
[INFO] [stdout] ...   |
[INFO] [stdout] 124 | |         ]
[INFO] [stdout] 125 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:115:5
[INFO] [stdout]     |
[INFO] [stdout] 115 | /     parses_to! {
[INFO] [stdout] 116 | |         parser: vm(),
[INFO] [stdout] 117 | |         input: "abc   abc",
[INFO] [stdout] 118 | |         rule: "sequence",
[INFO] [stdout] ...   |
[INFO] [stdout] 124 | |         ]
[INFO] [stdout] 125 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:130:5
[INFO] [stdout]     |
[INFO] [stdout] 130 | /     parses_to! {
[INFO] [stdout] 131 | |         parser: vm(),
[INFO] [stdout] 132 | |         input: "abcabc",
[INFO] [stdout] 133 | |         rule: "sequence_compound",
[INFO] [stdout] ...   |
[INFO] [stdout] 139 | |         ]
[INFO] [stdout] 140 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:130:5
[INFO] [stdout]     |
[INFO] [stdout] 130 | /     parses_to! {
[INFO] [stdout] 131 | |         parser: vm(),
[INFO] [stdout] 132 | |         input: "abcabc",
[INFO] [stdout] 133 | |         rule: "sequence_compound",
[INFO] [stdout] ...   |
[INFO] [stdout] 139 | |         ]
[INFO] [stdout] 140 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:145:5
[INFO] [stdout]     |
[INFO] [stdout] 145 | /     parses_to! {
[INFO] [stdout] 146 | |         parser: vm(),
[INFO] [stdout] 147 | |         input: "abcabc",
[INFO] [stdout] 148 | |         rule: "sequence_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 151 | |         ]
[INFO] [stdout] 152 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:145:5
[INFO] [stdout]     |
[INFO] [stdout] 145 | /     parses_to! {
[INFO] [stdout] 146 | |         parser: vm(),
[INFO] [stdout] 147 | |         input: "abcabc",
[INFO] [stdout] 148 | |         rule: "sequence_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 151 | |         ]
[INFO] [stdout] 152 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:157:5
[INFO] [stdout]     |
[INFO] [stdout] 157 | /     parses_to! {
[INFO] [stdout] 158 | |         parser: vm(),
[INFO] [stdout] 159 | |         input: "abc   abc",
[INFO] [stdout] 160 | |         rule: "sequence_non_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 168 | |         ]
[INFO] [stdout] 169 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:157:5
[INFO] [stdout]     |
[INFO] [stdout] 157 | /     parses_to! {
[INFO] [stdout] 158 | |         parser: vm(),
[INFO] [stdout] 159 | |         input: "abc   abc",
[INFO] [stdout] 160 | |         rule: "sequence_non_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 168 | |         ]
[INFO] [stdout] 169 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:175:5
[INFO] [stdout]     |
[INFO] [stdout] 175 | /     parses_to! {
[INFO] [stdout] 176 | |         parser: vm(),
[INFO] [stdout] 177 | |         input: "abc abc",
[INFO] [stdout] 178 | |         rule: "sequence_atomic",
[INFO] [stdout] 179 | |         tokens: []
[INFO] [stdout] 180 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:175:5
[INFO] [stdout]     |
[INFO] [stdout] 175 | /     parses_to! {
[INFO] [stdout] 176 | |         parser: vm(),
[INFO] [stdout] 177 | |         input: "abc abc",
[INFO] [stdout] 178 | |         rule: "sequence_atomic",
[INFO] [stdout] 179 | |         tokens: []
[INFO] [stdout] 180 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:185:5
[INFO] [stdout]     |
[INFO] [stdout] 185 | /     parses_to! {
[INFO] [stdout] 186 | |         parser: vm(),
[INFO] [stdout] 187 | |         input: "abcabc",
[INFO] [stdout] 188 | |         rule: "sequence_atomic_compound",
[INFO] [stdout] ...   |
[INFO] [stdout] 196 | |         ]
[INFO] [stdout] 197 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:185:5
[INFO] [stdout]     |
[INFO] [stdout] 185 | /     parses_to! {
[INFO] [stdout] 186 | |         parser: vm(),
[INFO] [stdout] 187 | |         input: "abcabc",
[INFO] [stdout] 188 | |         rule: "sequence_atomic_compound",
[INFO] [stdout] ...   |
[INFO] [stdout] 196 | |         ]
[INFO] [stdout] 197 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:202:5
[INFO] [stdout]     |
[INFO] [stdout] 202 | /     parses_to! {
[INFO] [stdout] 203 | |         parser: vm(),
[INFO] [stdout] 204 | |         input: "abcabc",
[INFO] [stdout] 205 | |         rule: "sequence_compound_nested",
[INFO] [stdout] ...   |
[INFO] [stdout] 213 | |         ]
[INFO] [stdout] 214 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:202:5
[INFO] [stdout]     |
[INFO] [stdout] 202 | /     parses_to! {
[INFO] [stdout] 203 | |         parser: vm(),
[INFO] [stdout] 204 | |         input: "abcabc",
[INFO] [stdout] 205 | |         rule: "sequence_compound_nested",
[INFO] [stdout] ...   |
[INFO] [stdout] 213 | |         ]
[INFO] [stdout] 214 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:220:5
[INFO] [stdout]     |
[INFO] [stdout] 220 | /     parses_to! {
[INFO] [stdout] 221 | |         parser: vm(),
[INFO] [stdout] 222 | |         input: "abc abc",
[INFO] [stdout] 223 | |         rule: "sequence_compound_nested",
[INFO] [stdout] 224 | |         tokens: []
[INFO] [stdout] 225 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:220:5
[INFO] [stdout]     |
[INFO] [stdout] 220 | /     parses_to! {
[INFO] [stdout] 221 | |         parser: vm(),
[INFO] [stdout] 222 | |         input: "abc abc",
[INFO] [stdout] 223 | |         rule: "sequence_compound_nested",
[INFO] [stdout] 224 | |         tokens: []
[INFO] [stdout] 225 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 | /     parses_to! {
[INFO] [stdout] 231 | |         parser: vm(),
[INFO] [stdout] 232 | |         input: "abc",
[INFO] [stdout] 233 | |         rule: "choice",
[INFO] [stdout] ...   |
[INFO] [stdout] 238 | |         ]
[INFO] [stdout] 239 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:230:5
[INFO] [stdout]     |
[INFO] [stdout] 230 | /     parses_to! {
[INFO] [stdout] 231 | |         parser: vm(),
[INFO] [stdout] 232 | |         input: "abc",
[INFO] [stdout] 233 | |         rule: "choice",
[INFO] [stdout] ...   |
[INFO] [stdout] 238 | |         ]
[INFO] [stdout] 239 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:244:5
[INFO] [stdout]     |
[INFO] [stdout] 244 | /     parses_to! {
[INFO] [stdout] 245 | |         parser: vm(),
[INFO] [stdout] 246 | |         input: "0",
[INFO] [stdout] 247 | |         rule: "choice",
[INFO] [stdout] ...   |
[INFO] [stdout] 252 | |         ]
[INFO] [stdout] 253 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:244:5
[INFO] [stdout]     |
[INFO] [stdout] 244 | /     parses_to! {
[INFO] [stdout] 245 | |         parser: vm(),
[INFO] [stdout] 246 | |         input: "0",
[INFO] [stdout] 247 | |         rule: "choice",
[INFO] [stdout] ...   |
[INFO] [stdout] 252 | |         ]
[INFO] [stdout] 253 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:258:5
[INFO] [stdout]     |
[INFO] [stdout] 258 | /     parses_to! {
[INFO] [stdout] 259 | |         parser: vm(),
[INFO] [stdout] 260 | |         input: "abc",
[INFO] [stdout] 261 | |         rule: "optional",
[INFO] [stdout] ...   |
[INFO] [stdout] 266 | |         ]
[INFO] [stdout] 267 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:258:5
[INFO] [stdout]     |
[INFO] [stdout] 258 | /     parses_to! {
[INFO] [stdout] 259 | |         parser: vm(),
[INFO] [stdout] 260 | |         input: "abc",
[INFO] [stdout] 261 | |         rule: "optional",
[INFO] [stdout] ...   |
[INFO] [stdout] 266 | |         ]
[INFO] [stdout] 267 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:272:5
[INFO] [stdout]     |
[INFO] [stdout] 272 | /     parses_to! {
[INFO] [stdout] 273 | |         parser: vm(),
[INFO] [stdout] 274 | |         input: "",
[INFO] [stdout] 275 | |         rule: "optional",
[INFO] [stdout] ...   |
[INFO] [stdout] 278 | |         ]
[INFO] [stdout] 279 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:272:5
[INFO] [stdout]     |
[INFO] [stdout] 272 | /     parses_to! {
[INFO] [stdout] 273 | |         parser: vm(),
[INFO] [stdout] 274 | |         input: "",
[INFO] [stdout] 275 | |         rule: "optional",
[INFO] [stdout] ...   |
[INFO] [stdout] 278 | |         ]
[INFO] [stdout] 279 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:284:5
[INFO] [stdout]     |
[INFO] [stdout] 284 | /     parses_to! {
[INFO] [stdout] 285 | |         parser: vm(),
[INFO] [stdout] 286 | |         input: "",
[INFO] [stdout] 287 | |         rule: "repeat",
[INFO] [stdout] ...   |
[INFO] [stdout] 290 | |         ]
[INFO] [stdout] 291 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:284:5
[INFO] [stdout]     |
[INFO] [stdout] 284 | /     parses_to! {
[INFO] [stdout] 285 | |         parser: vm(),
[INFO] [stdout] 286 | |         input: "",
[INFO] [stdout] 287 | |         rule: "repeat",
[INFO] [stdout] ...   |
[INFO] [stdout] 290 | |         ]
[INFO] [stdout] 291 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:296:5
[INFO] [stdout]     |
[INFO] [stdout] 296 | /     parses_to! {
[INFO] [stdout] 297 | |         parser: vm(),
[INFO] [stdout] 298 | |         input: "abc   abc",
[INFO] [stdout] 299 | |         rule: "repeat",
[INFO] [stdout] ...   |
[INFO] [stdout] 305 | |         ]
[INFO] [stdout] 306 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:296:5
[INFO] [stdout]     |
[INFO] [stdout] 296 | /     parses_to! {
[INFO] [stdout] 297 | |         parser: vm(),
[INFO] [stdout] 298 | |         input: "abc   abc",
[INFO] [stdout] 299 | |         rule: "repeat",
[INFO] [stdout] ...   |
[INFO] [stdout] 305 | |         ]
[INFO] [stdout] 306 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:311:5
[INFO] [stdout]     |
[INFO] [stdout] 311 | /     parses_to! {
[INFO] [stdout] 312 | |         parser: vm(),
[INFO] [stdout] 313 | |         input: "",
[INFO] [stdout] 314 | |         rule: "repeat_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 317 | |         ]
[INFO] [stdout] 318 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:311:5
[INFO] [stdout]     |
[INFO] [stdout] 311 | /     parses_to! {
[INFO] [stdout] 312 | |         parser: vm(),
[INFO] [stdout] 313 | |         input: "",
[INFO] [stdout] 314 | |         rule: "repeat_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 317 | |         ]
[INFO] [stdout] 318 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:323:5
[INFO] [stdout]     |
[INFO] [stdout] 323 | /     parses_to! {
[INFO] [stdout] 324 | |         parser: vm(),
[INFO] [stdout] 325 | |         input: "abcabc",
[INFO] [stdout] 326 | |         rule: "repeat_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 329 | |         ]
[INFO] [stdout] 330 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:323:5
[INFO] [stdout]     |
[INFO] [stdout] 323 | /     parses_to! {
[INFO] [stdout] 324 | |         parser: vm(),
[INFO] [stdout] 325 | |         input: "abcabc",
[INFO] [stdout] 326 | |         rule: "repeat_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 329 | |         ]
[INFO] [stdout] 330 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:336:5
[INFO] [stdout]     |
[INFO] [stdout] 336 | /     parses_to! {
[INFO] [stdout] 337 | |         parser: vm(),
[INFO] [stdout] 338 | |         input: "abc abc",
[INFO] [stdout] 339 | |         rule: "repeat_atomic",
[INFO] [stdout] 340 | |         tokens: []
[INFO] [stdout] 341 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:336:5
[INFO] [stdout]     |
[INFO] [stdout] 336 | /     parses_to! {
[INFO] [stdout] 337 | |         parser: vm(),
[INFO] [stdout] 338 | |         input: "abc abc",
[INFO] [stdout] 339 | |         rule: "repeat_atomic",
[INFO] [stdout] 340 | |         tokens: []
[INFO] [stdout] 341 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:347:5
[INFO] [stdout]     |
[INFO] [stdout] 347 | /     parses_to! {
[INFO] [stdout] 348 | |         parser: vm(),
[INFO] [stdout] 349 | |         input: "",
[INFO] [stdout] 350 | |         rule: "repeat_once",
[INFO] [stdout] 351 | |         tokens: []
[INFO] [stdout] 352 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:347:5
[INFO] [stdout]     |
[INFO] [stdout] 347 | /     parses_to! {
[INFO] [stdout] 348 | |         parser: vm(),
[INFO] [stdout] 349 | |         input: "",
[INFO] [stdout] 350 | |         rule: "repeat_once",
[INFO] [stdout] 351 | |         tokens: []
[INFO] [stdout] 352 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:357:5
[INFO] [stdout]     |
[INFO] [stdout] 357 | /     parses_to! {
[INFO] [stdout] 358 | |         parser: vm(),
[INFO] [stdout] 359 | |         input: "abc   abc",
[INFO] [stdout] 360 | |         rule: "repeat_once",
[INFO] [stdout] ...   |
[INFO] [stdout] 366 | |         ]
[INFO] [stdout] 367 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:357:5
[INFO] [stdout]     |
[INFO] [stdout] 357 | /     parses_to! {
[INFO] [stdout] 358 | |         parser: vm(),
[INFO] [stdout] 359 | |         input: "abc   abc",
[INFO] [stdout] 360 | |         rule: "repeat_once",
[INFO] [stdout] ...   |
[INFO] [stdout] 366 | |         ]
[INFO] [stdout] 367 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:373:5
[INFO] [stdout]     |
[INFO] [stdout] 373 | /     parses_to! {
[INFO] [stdout] 374 | |         parser: vm(),
[INFO] [stdout] 375 | |         input: "",
[INFO] [stdout] 376 | |         rule: "repeat_once_atomic",
[INFO] [stdout] 377 | |         tokens: []
[INFO] [stdout] 378 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:373:5
[INFO] [stdout]     |
[INFO] [stdout] 373 | /     parses_to! {
[INFO] [stdout] 374 | |         parser: vm(),
[INFO] [stdout] 375 | |         input: "",
[INFO] [stdout] 376 | |         rule: "repeat_once_atomic",
[INFO] [stdout] 377 | |         tokens: []
[INFO] [stdout] 378 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:383:5
[INFO] [stdout]     |
[INFO] [stdout] 383 | /     parses_to! {
[INFO] [stdout] 384 | |         parser: vm(),
[INFO] [stdout] 385 | |         input: "abcabc",
[INFO] [stdout] 386 | |         rule: "repeat_once_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 389 | |         ]
[INFO] [stdout] 390 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:383:5
[INFO] [stdout]     |
[INFO] [stdout] 383 | /     parses_to! {
[INFO] [stdout] 384 | |         parser: vm(),
[INFO] [stdout] 385 | |         input: "abcabc",
[INFO] [stdout] 386 | |         rule: "repeat_once_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 389 | |         ]
[INFO] [stdout] 390 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:396:5
[INFO] [stdout]     |
[INFO] [stdout] 396 | /     parses_to! {
[INFO] [stdout] 397 | |         parser: vm(),
[INFO] [stdout] 398 | |         input: "abc abc",
[INFO] [stdout] 399 | |         rule: "repeat_once_atomic",
[INFO] [stdout] 400 | |         tokens: []
[INFO] [stdout] 401 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:396:5
[INFO] [stdout]     |
[INFO] [stdout] 396 | /     parses_to! {
[INFO] [stdout] 397 | |         parser: vm(),
[INFO] [stdout] 398 | |         input: "abc abc",
[INFO] [stdout] 399 | |         rule: "repeat_once_atomic",
[INFO] [stdout] 400 | |         tokens: []
[INFO] [stdout] 401 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:406:5
[INFO] [stdout]     |
[INFO] [stdout] 406 | /     parses_to! {
[INFO] [stdout] 407 | |         parser: vm(),
[INFO] [stdout] 408 | |         input: "abc abc",
[INFO] [stdout] 409 | |         rule: "repeat_min_max",
[INFO] [stdout] ...   |
[INFO] [stdout] 415 | |         ]
[INFO] [stdout] 416 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:406:5
[INFO] [stdout]     |
[INFO] [stdout] 406 | /     parses_to! {
[INFO] [stdout] 407 | |         parser: vm(),
[INFO] [stdout] 408 | |         input: "abc abc",
[INFO] [stdout] 409 | |         rule: "repeat_min_max",
[INFO] [stdout] ...   |
[INFO] [stdout] 415 | |         ]
[INFO] [stdout] 416 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:421:5
[INFO] [stdout]     |
[INFO] [stdout] 421 | /     parses_to! {
[INFO] [stdout] 422 | |         parser: vm(),
[INFO] [stdout] 423 | |         input: "abc abc abc",
[INFO] [stdout] 424 | |         rule: "repeat_min_max",
[INFO] [stdout] ...   |
[INFO] [stdout] 431 | |         ]
[INFO] [stdout] 432 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:421:5
[INFO] [stdout]     |
[INFO] [stdout] 421 | /     parses_to! {
[INFO] [stdout] 422 | |         parser: vm(),
[INFO] [stdout] 423 | |         input: "abc abc abc",
[INFO] [stdout] 424 | |         rule: "repeat_min_max",
[INFO] [stdout] ...   |
[INFO] [stdout] 431 | |         ]
[INFO] [stdout] 432 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:437:5
[INFO] [stdout]     |
[INFO] [stdout] 437 | /     parses_to! {
[INFO] [stdout] 438 | |         parser: vm(),
[INFO] [stdout] 439 | |         input: "abcabc",
[INFO] [stdout] 440 | |         rule: "repeat_min_max_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 443 | |         ]
[INFO] [stdout] 444 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:437:5
[INFO] [stdout]     |
[INFO] [stdout] 437 | /     parses_to! {
[INFO] [stdout] 438 | |         parser: vm(),
[INFO] [stdout] 439 | |         input: "abcabc",
[INFO] [stdout] 440 | |         rule: "repeat_min_max_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 443 | |         ]
[INFO] [stdout] 444 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:449:5
[INFO] [stdout]     |
[INFO] [stdout] 449 | /     parses_to! {
[INFO] [stdout] 450 | |         parser: vm(),
[INFO] [stdout] 451 | |         input: "abcabcabc",
[INFO] [stdout] 452 | |         rule: "repeat_min_max_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 455 | |         ]
[INFO] [stdout] 456 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:449:5
[INFO] [stdout]     |
[INFO] [stdout] 449 | /     parses_to! {
[INFO] [stdout] 450 | |         parser: vm(),
[INFO] [stdout] 451 | |         input: "abcabcabc",
[INFO] [stdout] 452 | |         rule: "repeat_min_max_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 455 | |         ]
[INFO] [stdout] 456 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:462:5
[INFO] [stdout]     |
[INFO] [stdout] 462 | /     parses_to! {
[INFO] [stdout] 463 | |         parser: vm(),
[INFO] [stdout] 464 | |         input: "abc abc",
[INFO] [stdout] 465 | |         rule: "repeat_min_max_atomic",
[INFO] [stdout] 466 | |         tokens: []
[INFO] [stdout] 467 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:462:5
[INFO] [stdout]     |
[INFO] [stdout] 462 | /     parses_to! {
[INFO] [stdout] 463 | |         parser: vm(),
[INFO] [stdout] 464 | |         input: "abc abc",
[INFO] [stdout] 465 | |         rule: "repeat_min_max_atomic",
[INFO] [stdout] 466 | |         tokens: []
[INFO] [stdout] 467 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:472:5
[INFO] [stdout]     |
[INFO] [stdout] 472 | /     parses_to! {
[INFO] [stdout] 473 | |         parser: vm(),
[INFO] [stdout] 474 | |         input: "abc abc",
[INFO] [stdout] 475 | |         rule: "repeat_exact",
[INFO] [stdout] ...   |
[INFO] [stdout] 481 | |         ]
[INFO] [stdout] 482 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:472:5
[INFO] [stdout]     |
[INFO] [stdout] 472 | /     parses_to! {
[INFO] [stdout] 473 | |         parser: vm(),
[INFO] [stdout] 474 | |         input: "abc abc",
[INFO] [stdout] 475 | |         rule: "repeat_exact",
[INFO] [stdout] ...   |
[INFO] [stdout] 481 | |         ]
[INFO] [stdout] 482 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:488:5
[INFO] [stdout]     |
[INFO] [stdout] 488 | /     parses_to! {
[INFO] [stdout] 489 | |         parser: vm(),
[INFO] [stdout] 490 | |         input: "abc",
[INFO] [stdout] 491 | |         rule: "repeat_min",
[INFO] [stdout] 492 | |         tokens: []
[INFO] [stdout] 493 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:488:5
[INFO] [stdout]     |
[INFO] [stdout] 488 | /     parses_to! {
[INFO] [stdout] 489 | |         parser: vm(),
[INFO] [stdout] 490 | |         input: "abc",
[INFO] [stdout] 491 | |         rule: "repeat_min",
[INFO] [stdout] 492 | |         tokens: []
[INFO] [stdout] 493 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:498:5
[INFO] [stdout]     |
[INFO] [stdout] 498 | /     parses_to! {
[INFO] [stdout] 499 | |         parser: vm(),
[INFO] [stdout] 500 | |         input: "abc abc",
[INFO] [stdout] 501 | |         rule: "repeat_min",
[INFO] [stdout] ...   |
[INFO] [stdout] 507 | |         ]
[INFO] [stdout] 508 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:498:5
[INFO] [stdout]     |
[INFO] [stdout] 498 | /     parses_to! {
[INFO] [stdout] 499 | |         parser: vm(),
[INFO] [stdout] 500 | |         input: "abc abc",
[INFO] [stdout] 501 | |         rule: "repeat_min",
[INFO] [stdout] ...   |
[INFO] [stdout] 507 | |         ]
[INFO] [stdout] 508 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:513:5
[INFO] [stdout]     |
[INFO] [stdout] 513 | /     parses_to! {
[INFO] [stdout] 514 | |         parser: vm(),
[INFO] [stdout] 515 | |         input: "abc abc  abc",
[INFO] [stdout] 516 | |         rule: "repeat_min",
[INFO] [stdout] ...   |
[INFO] [stdout] 523 | |         ]
[INFO] [stdout] 524 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:513:5
[INFO] [stdout]     |
[INFO] [stdout] 513 | /     parses_to! {
[INFO] [stdout] 514 | |         parser: vm(),
[INFO] [stdout] 515 | |         input: "abc abc  abc",
[INFO] [stdout] 516 | |         rule: "repeat_min",
[INFO] [stdout] ...   |
[INFO] [stdout] 523 | |         ]
[INFO] [stdout] 524 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:530:5
[INFO] [stdout]     |
[INFO] [stdout] 530 | /     parses_to! {
[INFO] [stdout] 531 | |         parser: vm(),
[INFO] [stdout] 532 | |         input: "abc",
[INFO] [stdout] 533 | |         rule: "repeat_min_atomic",
[INFO] [stdout] 534 | |         tokens: []
[INFO] [stdout] 535 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:530:5
[INFO] [stdout]     |
[INFO] [stdout] 530 | /     parses_to! {
[INFO] [stdout] 531 | |         parser: vm(),
[INFO] [stdout] 532 | |         input: "abc",
[INFO] [stdout] 533 | |         rule: "repeat_min_atomic",
[INFO] [stdout] 534 | |         tokens: []
[INFO] [stdout] 535 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:540:5
[INFO] [stdout]     |
[INFO] [stdout] 540 | /     parses_to! {
[INFO] [stdout] 541 | |         parser: vm(),
[INFO] [stdout] 542 | |         input: "abcabc",
[INFO] [stdout] 543 | |         rule: "repeat_min_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 546 | |         ]
[INFO] [stdout] 547 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:540:5
[INFO] [stdout]     |
[INFO] [stdout] 540 | /     parses_to! {
[INFO] [stdout] 541 | |         parser: vm(),
[INFO] [stdout] 542 | |         input: "abcabc",
[INFO] [stdout] 543 | |         rule: "repeat_min_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 546 | |         ]
[INFO] [stdout] 547 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:552:5
[INFO] [stdout]     |
[INFO] [stdout] 552 | /     parses_to! {
[INFO] [stdout] 553 | |         parser: vm(),
[INFO] [stdout] 554 | |         input: "abcabcabc",
[INFO] [stdout] 555 | |         rule: "repeat_min_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 558 | |         ]
[INFO] [stdout] 559 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:552:5
[INFO] [stdout]     |
[INFO] [stdout] 552 | /     parses_to! {
[INFO] [stdout] 553 | |         parser: vm(),
[INFO] [stdout] 554 | |         input: "abcabcabc",
[INFO] [stdout] 555 | |         rule: "repeat_min_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 558 | |         ]
[INFO] [stdout] 559 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:565:5
[INFO] [stdout]     |
[INFO] [stdout] 565 | /     parses_to! {
[INFO] [stdout] 566 | |         parser: vm(),
[INFO] [stdout] 567 | |         input: "abc abc",
[INFO] [stdout] 568 | |         rule: "repeat_min_atomic",
[INFO] [stdout] 569 | |         tokens: []
[INFO] [stdout] 570 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:565:5
[INFO] [stdout]     |
[INFO] [stdout] 565 | /     parses_to! {
[INFO] [stdout] 566 | |         parser: vm(),
[INFO] [stdout] 567 | |         input: "abc abc",
[INFO] [stdout] 568 | |         rule: "repeat_min_atomic",
[INFO] [stdout] 569 | |         tokens: []
[INFO] [stdout] 570 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:575:5
[INFO] [stdout]     |
[INFO] [stdout] 575 | /     parses_to! {
[INFO] [stdout] 576 | |         parser: vm(),
[INFO] [stdout] 577 | |         input: "abc",
[INFO] [stdout] 578 | |         rule: "repeat_max",
[INFO] [stdout] ...   |
[INFO] [stdout] 583 | |         ]
[INFO] [stdout] 584 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:575:5
[INFO] [stdout]     |
[INFO] [stdout] 575 | /     parses_to! {
[INFO] [stdout] 576 | |         parser: vm(),
[INFO] [stdout] 577 | |         input: "abc",
[INFO] [stdout] 578 | |         rule: "repeat_max",
[INFO] [stdout] ...   |
[INFO] [stdout] 583 | |         ]
[INFO] [stdout] 584 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:589:5
[INFO] [stdout]     |
[INFO] [stdout] 589 | /     parses_to! {
[INFO] [stdout] 590 | |         parser: vm(),
[INFO] [stdout] 591 | |         input: "abc abc",
[INFO] [stdout] 592 | |         rule: "repeat_max",
[INFO] [stdout] ...   |
[INFO] [stdout] 598 | |         ]
[INFO] [stdout] 599 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:589:5
[INFO] [stdout]     |
[INFO] [stdout] 589 | /     parses_to! {
[INFO] [stdout] 590 | |         parser: vm(),
[INFO] [stdout] 591 | |         input: "abc abc",
[INFO] [stdout] 592 | |         rule: "repeat_max",
[INFO] [stdout] ...   |
[INFO] [stdout] 598 | |         ]
[INFO] [stdout] 599 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:605:5
[INFO] [stdout]     |
[INFO] [stdout] 605 | /     parses_to! {
[INFO] [stdout] 606 | |         parser: vm(),
[INFO] [stdout] 607 | |         input: "abc abc",
[INFO] [stdout] 608 | |         rule: "repeat_max",
[INFO] [stdout] 609 | |         tokens: []
[INFO] [stdout] 610 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:605:5
[INFO] [stdout]     |
[INFO] [stdout] 605 | /     parses_to! {
[INFO] [stdout] 606 | |         parser: vm(),
[INFO] [stdout] 607 | |         input: "abc abc",
[INFO] [stdout] 608 | |         rule: "repeat_max",
[INFO] [stdout] 609 | |         tokens: []
[INFO] [stdout] 610 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:615:5
[INFO] [stdout]     |
[INFO] [stdout] 615 | /     parses_to! {
[INFO] [stdout] 616 | |         parser: vm(),
[INFO] [stdout] 617 | |         input: "abc",
[INFO] [stdout] 618 | |         rule: "repeat_max_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 621 | |         ]
[INFO] [stdout] 622 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:615:5
[INFO] [stdout]     |
[INFO] [stdout] 615 | /     parses_to! {
[INFO] [stdout] 616 | |         parser: vm(),
[INFO] [stdout] 617 | |         input: "abc",
[INFO] [stdout] 618 | |         rule: "repeat_max_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 621 | |         ]
[INFO] [stdout] 622 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:627:5
[INFO] [stdout]     |
[INFO] [stdout] 627 | /     parses_to! {
[INFO] [stdout] 628 | |         parser: vm(),
[INFO] [stdout] 629 | |         input: "abcabc",
[INFO] [stdout] 630 | |         rule: "repeat_max_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 633 | |         ]
[INFO] [stdout] 634 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:627:5
[INFO] [stdout]     |
[INFO] [stdout] 627 | /     parses_to! {
[INFO] [stdout] 628 | |         parser: vm(),
[INFO] [stdout] 629 | |         input: "abcabc",
[INFO] [stdout] 630 | |         rule: "repeat_max_atomic",
[INFO] [stdout] ...   |
[INFO] [stdout] 633 | |         ]
[INFO] [stdout] 634 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:640:5
[INFO] [stdout]     |
[INFO] [stdout] 640 | /     parses_to! {
[INFO] [stdout] 641 | |         parser: vm(),
[INFO] [stdout] 642 | |         input: "abcabcabc",
[INFO] [stdout] 643 | |         rule: "repeat_max_atomic",
[INFO] [stdout] 644 | |         tokens: []
[INFO] [stdout] 645 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:640:5
[INFO] [stdout]     |
[INFO] [stdout] 640 | /     parses_to! {
[INFO] [stdout] 641 | |         parser: vm(),
[INFO] [stdout] 642 | |         input: "abcabcabc",
[INFO] [stdout] 643 | |         rule: "repeat_max_atomic",
[INFO] [stdout] 644 | |         tokens: []
[INFO] [stdout] 645 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:651:5
[INFO] [stdout]     |
[INFO] [stdout] 651 | /     parses_to! {
[INFO] [stdout] 652 | |         parser: vm(),
[INFO] [stdout] 653 | |         input: "abc abc",
[INFO] [stdout] 654 | |         rule: "repeat_max_atomic",
[INFO] [stdout] 655 | |         tokens: []
[INFO] [stdout] 656 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:651:5
[INFO] [stdout]     |
[INFO] [stdout] 651 | /     parses_to! {
[INFO] [stdout] 652 | |         parser: vm(),
[INFO] [stdout] 653 | |         input: "abc abc",
[INFO] [stdout] 654 | |         rule: "repeat_max_atomic",
[INFO] [stdout] 655 | |         tokens: []
[INFO] [stdout] 656 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:661:5
[INFO] [stdout]     |
[INFO] [stdout] 661 | /     parses_to! {
[INFO] [stdout] 662 | |         parser: vm(),
[INFO] [stdout] 663 | |         input: "abc$$$ $$$abc",
[INFO] [stdout] 664 | |         rule: "repeat_once",
[INFO] [stdout] ...   |
[INFO] [stdout] 670 | |         ]
[INFO] [stdout] 671 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:661:5
[INFO] [stdout]     |
[INFO] [stdout] 661 | /     parses_to! {
[INFO] [stdout] 662 | |         parser: vm(),
[INFO] [stdout] 663 | |         input: "abc$$$ $$$abc",
[INFO] [stdout] 664 | |         rule: "repeat_once",
[INFO] [stdout] ...   |
[INFO] [stdout] 670 | |         ]
[INFO] [stdout] 671 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:676:5
[INFO] [stdout]     |
[INFO] [stdout] 676 | /     parses_to! {
[INFO] [stdout] 677 | |         parser: vm(),
[INFO] [stdout] 678 | |         input: "abc",
[INFO] [stdout] 679 | |         rule: "soi_at_start",
[INFO] [stdout] ...   |
[INFO] [stdout] 684 | |         ]
[INFO] [stdout] 685 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:676:5
[INFO] [stdout]     |
[INFO] [stdout] 676 | /     parses_to! {
[INFO] [stdout] 677 | |         parser: vm(),
[INFO] [stdout] 678 | |         input: "abc",
[INFO] [stdout] 679 | |         rule: "soi_at_start",
[INFO] [stdout] ...   |
[INFO] [stdout] 684 | |         ]
[INFO] [stdout] 685 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:690:5
[INFO] [stdout]     |
[INFO] [stdout] 690 | /     parses_to! {
[INFO] [stdout] 691 | |         parser: vm(),
[INFO] [stdout] 692 | |         input: "0111",
[INFO] [stdout] 693 | |         rule: "peek_",
[INFO] [stdout] ...   |
[INFO] [stdout] 699 | |         ]
[INFO] [stdout] 700 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:690:5
[INFO] [stdout]     |
[INFO] [stdout] 690 | /     parses_to! {
[INFO] [stdout] 691 | |         parser: vm(),
[INFO] [stdout] 692 | |         input: "0111",
[INFO] [stdout] 693 | |         rule: "peek_",
[INFO] [stdout] ...   |
[INFO] [stdout] 699 | |         ]
[INFO] [stdout] 700 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:705:5
[INFO] [stdout]     |
[INFO] [stdout] 705 | /     parses_to! {
[INFO] [stdout] 706 | |         parser: vm(),
[INFO] [stdout] 707 | |         input: "0110",
[INFO] [stdout] 708 | |         rule: "peek_all",
[INFO] [stdout] ...   |
[INFO] [stdout] 714 | |         ]
[INFO] [stdout] 715 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:705:5
[INFO] [stdout]     |
[INFO] [stdout] 705 | /     parses_to! {
[INFO] [stdout] 706 | |         parser: vm(),
[INFO] [stdout] 707 | |         input: "0110",
[INFO] [stdout] 708 | |         rule: "peek_all",
[INFO] [stdout] ...   |
[INFO] [stdout] 714 | |         ]
[INFO] [stdout] 715 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:720:5
[INFO] [stdout]     |
[INFO] [stdout] 720 | /     parses_to! {
[INFO] [stdout] 721 | |         parser: vm(),
[INFO] [stdout] 722 | |         input: "0123412",
[INFO] [stdout] 723 | |         rule: "peek_slice_23",
[INFO] [stdout] ...   |
[INFO] [stdout] 732 | |         ]
[INFO] [stdout] 733 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:720:5
[INFO] [stdout]     |
[INFO] [stdout] 720 | /     parses_to! {
[INFO] [stdout] 721 | |         parser: vm(),
[INFO] [stdout] 722 | |         input: "0123412",
[INFO] [stdout] 723 | |         rule: "peek_slice_23",
[INFO] [stdout] ...   |
[INFO] [stdout] 732 | |         ]
[INFO] [stdout] 733 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:738:5
[INFO] [stdout]     |
[INFO] [stdout] 738 | /     parses_to! {
[INFO] [stdout] 739 | |         parser: vm(),
[INFO] [stdout] 740 | |         input: "0110",
[INFO] [stdout] 741 | |         rule: "pop_",
[INFO] [stdout] ...   |
[INFO] [stdout] 747 | |         ]
[INFO] [stdout] 748 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:738:5
[INFO] [stdout]     |
[INFO] [stdout] 738 | /     parses_to! {
[INFO] [stdout] 739 | |         parser: vm(),
[INFO] [stdout] 740 | |         input: "0110",
[INFO] [stdout] 741 | |         rule: "pop_",
[INFO] [stdout] ...   |
[INFO] [stdout] 747 | |         ]
[INFO] [stdout] 748 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:753:5
[INFO] [stdout]     |
[INFO] [stdout] 753 | /     parses_to! {
[INFO] [stdout] 754 | |         parser: vm(),
[INFO] [stdout] 755 | |         input: "0110",
[INFO] [stdout] 756 | |         rule: "pop_all",
[INFO] [stdout] ...   |
[INFO] [stdout] 762 | |         ]
[INFO] [stdout] 763 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:753:5
[INFO] [stdout]     |
[INFO] [stdout] 753 | /     parses_to! {
[INFO] [stdout] 754 | |         parser: vm(),
[INFO] [stdout] 755 | |         input: "0110",
[INFO] [stdout] 756 | |         rule: "pop_all",
[INFO] [stdout] ...   |
[INFO] [stdout] 762 | |         ]
[INFO] [stdout] 763 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:768:5
[INFO] [stdout]     |
[INFO] [stdout] 768 | /     parses_to! {
[INFO] [stdout] 769 | |         parser: vm(),
[INFO] [stdout] 770 | |         input: "010",
[INFO] [stdout] 771 | |         rule: "pop_fail",
[INFO] [stdout] ...   |
[INFO] [stdout] 777 | |         ]
[INFO] [stdout] 778 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:768:5
[INFO] [stdout]     |
[INFO] [stdout] 768 | /     parses_to! {
[INFO] [stdout] 769 | |         parser: vm(),
[INFO] [stdout] 770 | |         input: "010",
[INFO] [stdout] 771 | |         rule: "pop_fail",
[INFO] [stdout] ...   |
[INFO] [stdout] 777 | |         ]
[INFO] [stdout] 778 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:783:5
[INFO] [stdout]     |
[INFO] [stdout] 783 | /     parses_to! {
[INFO] [stdout] 784 | |         parser: vm(),
[INFO] [stdout] 785 | |         input: "a,b,c,cba",
[INFO] [stdout] 786 | |         rule: "repeat_mutate_stack",
[INFO] [stdout] ...   |
[INFO] [stdout] 789 | |         ]
[INFO] [stdout] 790 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:783:5
[INFO] [stdout]     |
[INFO] [stdout] 783 | /     parses_to! {
[INFO] [stdout] 784 | |         parser: vm(),
[INFO] [stdout] 785 | |         input: "a,b,c,cba",
[INFO] [stdout] 786 | |         rule: "repeat_mutate_stack",
[INFO] [stdout] ...   |
[INFO] [stdout] 789 | |         ]
[INFO] [stdout] 790 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:795:5
[INFO] [stdout]     |
[INFO] [stdout] 795 | /     parses_to! {
[INFO] [stdout] 796 | |         parser: vm(),
[INFO] [stdout] 797 | |         input: "a",
[INFO] [stdout] 798 | |         rule: "checkpoint_restore",
[INFO] [stdout] ...   |
[INFO] [stdout] 801 | |         ]
[INFO] [stdout] 802 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:795:5
[INFO] [stdout]     |
[INFO] [stdout] 795 | /     parses_to! {
[INFO] [stdout] 796 | |         parser: vm(),
[INFO] [stdout] 797 | |         input: "a",
[INFO] [stdout] 798 | |         rule: "checkpoint_restore",
[INFO] [stdout] ...   |
[INFO] [stdout] 801 | |         ]
[INFO] [stdout] 802 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:807:5
[INFO] [stdout]     |
[INFO] [stdout] 807 | /     parses_to! {
[INFO] [stdout] 808 | |         parser: vm(),
[INFO] [stdout] 809 | |         input: "6",
[INFO] [stdout] 810 | |         rule: "ascii_digits",
[INFO] [stdout] ...   |
[INFO] [stdout] 813 | |         ]
[INFO] [stdout] 814 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:807:5
[INFO] [stdout]     |
[INFO] [stdout] 807 | /     parses_to! {
[INFO] [stdout] 808 | |         parser: vm(),
[INFO] [stdout] 809 | |         input: "6",
[INFO] [stdout] 810 | |         rule: "ascii_digits",
[INFO] [stdout] ...   |
[INFO] [stdout] 813 | |         ]
[INFO] [stdout] 814 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:819:5
[INFO] [stdout]     |
[INFO] [stdout] 819 | /     parses_to! {
[INFO] [stdout] 820 | |         parser: vm(),
[INFO] [stdout] 821 | |         input: "5",
[INFO] [stdout] 822 | |         rule: "ascii_nonzero_digits",
[INFO] [stdout] ...   |
[INFO] [stdout] 825 | |         ]
[INFO] [stdout] 826 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:819:5
[INFO] [stdout]     |
[INFO] [stdout] 819 | /     parses_to! {
[INFO] [stdout] 820 | |         parser: vm(),
[INFO] [stdout] 821 | |         input: "5",
[INFO] [stdout] 822 | |         rule: "ascii_nonzero_digits",
[INFO] [stdout] ...   |
[INFO] [stdout] 825 | |         ]
[INFO] [stdout] 826 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:831:5
[INFO] [stdout]     |
[INFO] [stdout] 831 | /     parses_to! {
[INFO] [stdout] 832 | |         parser: vm(),
[INFO] [stdout] 833 | |         input: "1",
[INFO] [stdout] 834 | |         rule: "ascii_bin_digits",
[INFO] [stdout] ...   |
[INFO] [stdout] 837 | |         ]
[INFO] [stdout] 838 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:831:5
[INFO] [stdout]     |
[INFO] [stdout] 831 | /     parses_to! {
[INFO] [stdout] 832 | |         parser: vm(),
[INFO] [stdout] 833 | |         input: "1",
[INFO] [stdout] 834 | |         rule: "ascii_bin_digits",
[INFO] [stdout] ...   |
[INFO] [stdout] 837 | |         ]
[INFO] [stdout] 838 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:843:5
[INFO] [stdout]     |
[INFO] [stdout] 843 | /     parses_to! {
[INFO] [stdout] 844 | |         parser: vm(),
[INFO] [stdout] 845 | |         input: "3",
[INFO] [stdout] 846 | |         rule: "ascii_oct_digits",
[INFO] [stdout] ...   |
[INFO] [stdout] 849 | |         ]
[INFO] [stdout] 850 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:843:5
[INFO] [stdout]     |
[INFO] [stdout] 843 | /     parses_to! {
[INFO] [stdout] 844 | |         parser: vm(),
[INFO] [stdout] 845 | |         input: "3",
[INFO] [stdout] 846 | |         rule: "ascii_oct_digits",
[INFO] [stdout] ...   |
[INFO] [stdout] 849 | |         ]
[INFO] [stdout] 850 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:855:5
[INFO] [stdout]     |
[INFO] [stdout] 855 | /     parses_to! {
[INFO] [stdout] 856 | |         parser: vm(),
[INFO] [stdout] 857 | |         input: "6bC",
[INFO] [stdout] 858 | |         rule: "ascii_hex_digits",
[INFO] [stdout] ...   |
[INFO] [stdout] 861 | |         ]
[INFO] [stdout] 862 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:855:5
[INFO] [stdout]     |
[INFO] [stdout] 855 | /     parses_to! {
[INFO] [stdout] 856 | |         parser: vm(),
[INFO] [stdout] 857 | |         input: "6bC",
[INFO] [stdout] 858 | |         rule: "ascii_hex_digits",
[INFO] [stdout] ...   |
[INFO] [stdout] 861 | |         ]
[INFO] [stdout] 862 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:867:5
[INFO] [stdout]     |
[INFO] [stdout] 867 | /     parses_to! {
[INFO] [stdout] 868 | |         parser: vm(),
[INFO] [stdout] 869 | |         input: "a",
[INFO] [stdout] 870 | |         rule: "ascii_alpha_lowers",
[INFO] [stdout] ...   |
[INFO] [stdout] 873 | |         ]
[INFO] [stdout] 874 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:867:5
[INFO] [stdout]     |
[INFO] [stdout] 867 | /     parses_to! {
[INFO] [stdout] 868 | |         parser: vm(),
[INFO] [stdout] 869 | |         input: "a",
[INFO] [stdout] 870 | |         rule: "ascii_alpha_lowers",
[INFO] [stdout] ...   |
[INFO] [stdout] 873 | |         ]
[INFO] [stdout] 874 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:879:5
[INFO] [stdout]     |
[INFO] [stdout] 879 | /     parses_to! {
[INFO] [stdout] 880 | |         parser: vm(),
[INFO] [stdout] 881 | |         input: "K",
[INFO] [stdout] 882 | |         rule: "ascii_alpha_uppers",
[INFO] [stdout] ...   |
[INFO] [stdout] 885 | |         ]
[INFO] [stdout] 886 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:879:5
[INFO] [stdout]     |
[INFO] [stdout] 879 | /     parses_to! {
[INFO] [stdout] 880 | |         parser: vm(),
[INFO] [stdout] 881 | |         input: "K",
[INFO] [stdout] 882 | |         rule: "ascii_alpha_uppers",
[INFO] [stdout] ...   |
[INFO] [stdout] 885 | |         ]
[INFO] [stdout] 886 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:891:5
[INFO] [stdout]     |
[INFO] [stdout] 891 | /     parses_to! {
[INFO] [stdout] 892 | |         parser: vm(),
[INFO] [stdout] 893 | |         input: "wF",
[INFO] [stdout] 894 | |         rule: "ascii_alphas",
[INFO] [stdout] ...   |
[INFO] [stdout] 897 | |         ]
[INFO] [stdout] 898 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:891:5
[INFO] [stdout]     |
[INFO] [stdout] 891 | /     parses_to! {
[INFO] [stdout] 892 | |         parser: vm(),
[INFO] [stdout] 893 | |         input: "wF",
[INFO] [stdout] 894 | |         rule: "ascii_alphas",
[INFO] [stdout] ...   |
[INFO] [stdout] 897 | |         ]
[INFO] [stdout] 898 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:903:5
[INFO] [stdout]     |
[INFO] [stdout] 903 | /     parses_to! {
[INFO] [stdout] 904 | |         parser: vm(),
[INFO] [stdout] 905 | |         input: "4jU",
[INFO] [stdout] 906 | |         rule: "ascii_alphanumerics",
[INFO] [stdout] ...   |
[INFO] [stdout] 909 | |         ]
[INFO] [stdout] 910 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:903:5
[INFO] [stdout]     |
[INFO] [stdout] 903 | /     parses_to! {
[INFO] [stdout] 904 | |         parser: vm(),
[INFO] [stdout] 905 | |         input: "4jU",
[INFO] [stdout] 906 | |         rule: "ascii_alphanumerics",
[INFO] [stdout] ...   |
[INFO] [stdout] 909 | |         ]
[INFO] [stdout] 910 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:915:5
[INFO] [stdout]     |
[INFO] [stdout] 915 | /     parses_to! {
[INFO] [stdout] 916 | |         parser: vm(),
[INFO] [stdout] 917 | |         input: "x02",
[INFO] [stdout] 918 | |         rule: "asciis",
[INFO] [stdout] ...   |
[INFO] [stdout] 921 | |         ]
[INFO] [stdout] 922 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:915:5
[INFO] [stdout]     |
[INFO] [stdout] 915 | /     parses_to! {
[INFO] [stdout] 916 | |         parser: vm(),
[INFO] [stdout] 917 | |         input: "x02",
[INFO] [stdout] 918 | |         rule: "asciis",
[INFO] [stdout] ...   |
[INFO] [stdout] 921 | |         ]
[INFO] [stdout] 922 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:927:5
[INFO] [stdout]     |
[INFO] [stdout] 927 | /     parses_to! {
[INFO] [stdout] 928 | |         parser: vm(),
[INFO] [stdout] 929 | |         input: "\n\r\n\r",
[INFO] [stdout] 930 | |         rule: "newline",
[INFO] [stdout] ...   |
[INFO] [stdout] 933 | |         ]
[INFO] [stdout] 934 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:927:5
[INFO] [stdout]     |
[INFO] [stdout] 927 | /     parses_to! {
[INFO] [stdout] 928 | |         parser: vm(),
[INFO] [stdout] 929 | |         input: "\n\r\n\r",
[INFO] [stdout] 930 | |         rule: "newline",
[INFO] [stdout] ...   |
[INFO] [stdout] 933 | |         ]
[INFO] [stdout] 934 | |     };
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:939:5
[INFO] [stdout]     |
[INFO] [stdout] 939 | /     parses_to! {
[INFO] [stdout] 940 | |         parser: vm(),
[INFO] [stdout] 941 | |         input: "نامهای",
[INFO] [stdout] 942 | |         rule: "unicode",
[INFO] [stdout] ...   |
[INFO] [stdout] 945 | |         ]
[INFO] [stdout] 946 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:939:5
[INFO] [stdout]     |
[INFO] [stdout] 939 | /     parses_to! {
[INFO] [stdout] 940 | |         parser: vm(),
[INFO] [stdout] 941 | |         input: "نامهای",
[INFO] [stdout] 942 | |         rule: "unicode",
[INFO] [stdout] ...   |
[INFO] [stdout] 945 | |         ]
[INFO] [stdout] 946 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:951:5
[INFO] [stdout]     |
[INFO] [stdout] 951 | /     parses_to! {
[INFO] [stdout] 952 | |         parser: vm(),
[INFO] [stdout] 953 | |         input: "shadows builtin",
[INFO] [stdout] 954 | |         rule: "SYMBOL",
[INFO] [stdout] ...   |
[INFO] [stdout] 957 | |         ]
[INFO] [stdout] 958 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/grammar.rs:951:5
[INFO] [stdout]     |
[INFO] [stdout] 951 | /     parses_to! {
[INFO] [stdout] 952 | |         parser: vm(),
[INFO] [stdout] 953 | |         input: "shadows builtin",
[INFO] [stdout] 954 | |         rule: "SYMBOL",
[INFO] [stdout] ...   |
[INFO] [stdout] 957 | |         ]
[INFO] [stdout] 958 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this is no longer accepted in Rust 2021
[INFO] [stdout]     = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 144 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.95s
[INFO] running `Command { std: "docker" "inspect" "2a264f900f3b757f4bae44911900558b1c98b45505af0014cfc1137424b4ca51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a264f900f3b757f4bae44911900558b1c98b45505af0014cfc1137424b4ca51", kill_on_drop: false }`
[INFO] [stdout] 2a264f900f3b757f4bae44911900558b1c98b45505af0014cfc1137424b4ca51