[INFO] cloning repository https://github.com/apskhem/c-webassembly
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/apskhem/c-webassembly" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fapskhem%2Fc-webassembly", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fapskhem%2Fc-webassembly'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8c18e9c1bca70d8e3a8cc545e1943cecf94c23da
[INFO] building apskhem/c-webassembly against master#222c5724ecc922fe67815f428c19f82c129d9386 for pr-97334
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fapskhem%2Fc-webassembly" "/workspace/builds/worker-26/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-26/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/apskhem/c-webassembly on toolchain 222c5724ecc922fe67815f428c19f82c129d9386
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/apskhem/c-webassembly
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/apskhem/c-webassembly
[INFO] tweaked toml for git repo https://github.com/apskhem/c-webassembly written to /workspace/builds/worker-26/source/Cargo.toml
[INFO] crate git repo https://github.com/apskhem/c-webassembly already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded assert_cmd v2.0.1
[INFO] [stderr]   Downloaded difflib v0.4.0
[INFO] [stderr]   Downloaded predicates v2.0.2
[INFO] [stderr]   Downloaded syn v1.0.78
[INFO] [stderr]   Downloaded owo-colors v2.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3feb7ae53d256a303a92c1b1c69ca47db6193bc9a1bcb61c54a0741fabce627f
[INFO] running `Command { std: "docker" "start" "-a" "3feb7ae53d256a303a92c1b1c69ca47db6193bc9a1bcb61c54a0741fabce627f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3feb7ae53d256a303a92c1b1c69ca47db6193bc9a1bcb61c54a0741fabce627f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3feb7ae53d256a303a92c1b1c69ca47db6193bc9a1bcb61c54a0741fabce627f", kill_on_drop: false }`
[INFO] [stdout] 3feb7ae53d256a303a92c1b1c69ca47db6193bc9a1bcb61c54a0741fabce627f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1edf30e8fd910260974abdf704ae260f57a230cadefe65860da36a781ab82c18
[INFO] running `Command { std: "docker" "start" "-a" "1edf30e8fd910260974abdf704ae260f57a230cadefe65860da36a781ab82c18", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.78
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling owo-colors v2.1.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling structopt-derive v0.4.16
[INFO] [stderr]    Compiling structopt v0.3.23
[INFO] [stderr]    Compiling c-webassembly v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let ast = parser::parse_syntax(&tokens)?;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `range`
[INFO] [stdout]    --> src/token.rs:163:31
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let RawToken { value, range } = value;
[INFO] [stdout]     |                               ^^^^^ help: try ignoring the field: `range: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Comment` in public interface (error E0446)
[INFO] [stdout]  --> src/token_grammar.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Comment(Comment),
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Keyword` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Keyword(Keyword),
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Type` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Type(Type),
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Identifier` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Identifier(Identifier),
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Literal` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Literal(Literal),
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Symbol` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Symbol(Symbol)
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_file`
[INFO] [stdout]  --> src/io.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn write_file(path: &str, buf: &[u8]) -> std::io::Result<()> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `GrammarError`
[INFO] [stdout]   --> src/grammar.rs:25:10
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub enum GrammarError {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]    --> src/token.rs:150:12
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn value(&self) -> &str {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `range`
[INFO] [stdout]    --> src/token.rs:154:18
[INFO] [stdout]     |
[INFO] [stdout] 154 |     pub const fn range(&self) -> &Range<usize> {
[INFO] [stdout]     |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Comment`
[INFO] [stdout]  --> src/token_grammar.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Comment(Comment),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `TokenGrammar` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/token_grammar.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Comment` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Keyword` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ByOriginal`
[INFO] [stdout]   --> src/token_grammar.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     ByOriginal(token::Type),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Type` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Literal` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Symbol` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:46:10
[INFO] [stdout]    |
[INFO] [stdout] 46 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_comment`
[INFO] [stdout]    --> src/token_grammar.rs:129:18
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub const fn any_comment() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_keyword`
[INFO] [stdout]    --> src/token_grammar.rs:137:18
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub const fn any_keyword() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_type`
[INFO] [stdout]    --> src/token_grammar.rs:141:18
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub const fn from_type(o: token::Type) -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_literal`
[INFO] [stdout]    --> src/token_grammar.rs:161:18
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub const fn any_literal() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_symbol`
[INFO] [stdout]    --> src/token_grammar.rs:177:18
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub const fn any_symbol() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ln`
[INFO] [stdout]   --> src/tokenizer.rs:42:14
[INFO] [stdout]    |
[INFO] [stdout] 42 |     const fn ln(&self) -> usize {
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `col`
[INFO] [stdout]   --> src/tokenizer.rs:46:14
[INFO] [stdout]    |
[INFO] [stdout] 46 |     const fn col(&self) -> usize {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `outfile`
[INFO] [stdout]   --> src/cli.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     outfile: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/cli.rs:5:10
[INFO] [stdout]    |
[INFO] [stdout] 5  | #[derive(Debug, StructOpt)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opt_level`
[INFO] [stdout]   --> src/cli.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     opt_level: Option<OptLevel>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/cli.rs:5:10
[INFO] [stdout]    |
[INFO] [stdout] 5  | #[derive(Debug, StructOpt)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `opt_level`
[INFO] [stdout]   --> src/cli.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn opt_level(&self) -> OptLevel {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.19s
[INFO] running `Command { std: "docker" "inspect" "1edf30e8fd910260974abdf704ae260f57a230cadefe65860da36a781ab82c18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1edf30e8fd910260974abdf704ae260f57a230cadefe65860da36a781ab82c18", kill_on_drop: false }`
[INFO] [stdout] 1edf30e8fd910260974abdf704ae260f57a230cadefe65860da36a781ab82c18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-26/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+222c5724ecc922fe67815f428c19f82c129d9386" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70b07fa83a980cfe83f934f2e1485be8a129f1e81184486b70bc782a5f2d88af
[INFO] running `Command { std: "docker" "start" "-a" "70b07fa83a980cfe83f934f2e1485be8a129f1e81184486b70bc782a5f2d88af", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let ast = parser::parse_syntax(&tokens)?;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `range`
[INFO] [stdout]    --> src/token.rs:163:31
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let RawToken { value, range } = value;
[INFO] [stdout]     |                               ^^^^^ help: try ignoring the field: `range: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Comment` in public interface (error E0446)
[INFO] [stdout]  --> src/token_grammar.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Comment(Comment),
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Keyword` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Keyword(Keyword),
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Type` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Type(Type),
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Identifier` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Identifier(Identifier),
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Literal` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Literal(Literal),
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Symbol` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Symbol(Symbol)
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_file`
[INFO] [stdout]  --> src/io.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn write_file(path: &str, buf: &[u8]) -> std::io::Result<()> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `GrammarError`
[INFO] [stdout]   --> src/grammar.rs:25:10
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub enum GrammarError {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]    --> src/token.rs:150:12
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn value(&self) -> &str {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `range`
[INFO] [stdout]    --> src/token.rs:154:18
[INFO] [stdout]     |
[INFO] [stdout] 154 |     pub const fn range(&self) -> &Range<usize> {
[INFO] [stdout]     |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Comment`
[INFO] [stdout]  --> src/token_grammar.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Comment(Comment),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `TokenGrammar` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/token_grammar.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Comment` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Keyword` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ByOriginal`
[INFO] [stdout]   --> src/token_grammar.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     ByOriginal(token::Type),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Type` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Literal` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Symbol` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:46:10
[INFO] [stdout]    |
[INFO] [stdout] 46 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_comment`
[INFO] [stdout]    --> src/token_grammar.rs:129:18
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub const fn any_comment() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_keyword`
[INFO] [stdout]    --> src/token_grammar.rs:137:18
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub const fn any_keyword() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_type`
[INFO] [stdout]    --> src/token_grammar.rs:141:18
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub const fn from_type(o: token::Type) -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_literal`
[INFO] [stdout]    --> src/token_grammar.rs:161:18
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub const fn any_literal() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_symbol`
[INFO] [stdout]    --> src/token_grammar.rs:177:18
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub const fn any_symbol() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ln`
[INFO] [stdout]   --> src/tokenizer.rs:42:14
[INFO] [stdout]    |
[INFO] [stdout] 42 |     const fn ln(&self) -> usize {
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `col`
[INFO] [stdout]   --> src/tokenizer.rs:46:14
[INFO] [stdout]    |
[INFO] [stdout] 46 |     const fn col(&self) -> usize {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `outfile`
[INFO] [stdout]   --> src/cli.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     outfile: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/cli.rs:5:10
[INFO] [stdout]    |
[INFO] [stdout] 5  | #[derive(Debug, StructOpt)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opt_level`
[INFO] [stdout]   --> src/cli.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     opt_level: Option<OptLevel>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/cli.rs:5:10
[INFO] [stdout]    |
[INFO] [stdout] 5  | #[derive(Debug, StructOpt)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `opt_level`
[INFO] [stdout]   --> src/cli.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn opt_level(&self) -> OptLevel {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling predicates-tree v1.0.3
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling predicates v2.0.2
[INFO] [stderr]    Compiling assert_cmd v2.0.1
[INFO] [stderr]    Compiling c-webassembly v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]   --> src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let ast = parser::parse_syntax(&tokens)?;
[INFO] [stdout]    |         ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `range`
[INFO] [stdout]    --> src/token.rs:163:31
[INFO] [stdout]     |
[INFO] [stdout] 163 |         let RawToken { value, range } = value;
[INFO] [stdout]     |                               ^^^^^ help: try ignoring the field: `range: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.22s
[INFO] [stdout] warning: private type `token_grammar::Comment` in public interface (error E0446)
[INFO] [stdout]  --> src/token_grammar.rs:9:13
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Comment(Comment),
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(private_in_public)]` on by default
[INFO] [stdout]   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/c_webassembly-155d59005bf2f94d)
[INFO] [stdout] warning: private type `token_grammar::Keyword` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:10:13
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Keyword(Keyword),
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/c_webassembly-8842c1c0305dd382)
[INFO] [stdout] warning: private type `token_grammar::Type` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 |     Type(Type),
[INFO] [stdout]    |          ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   Executable tests/default.rs (/opt/rustwide/target/debug/deps/default-3553e9892a2a847d)
[INFO] [stdout] warning: private type `token_grammar::Identifier` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Identifier(Identifier),
[INFO] [stdout]    |                ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Literal` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:13:13
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Literal(Literal),
[INFO] [stdout]    |             ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: private type `token_grammar::Symbol` in public interface (error E0446)
[INFO] [stdout]   --> src/token_grammar.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Symbol(Symbol)
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_file`
[INFO] [stdout]  --> src/io.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn write_file(path: &str, buf: &[u8]) -> std::io::Result<()> {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `GrammarError`
[INFO] [stdout]   --> src/grammar.rs:25:10
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub enum GrammarError {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]    --> src/token.rs:150:12
[INFO] [stdout]     |
[INFO] [stdout] 150 |     pub fn value(&self) -> &str {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `range`
[INFO] [stdout]    --> src/token.rs:154:18
[INFO] [stdout]     |
[INFO] [stdout] 154 |     pub const fn range(&self) -> &Range<usize> {
[INFO] [stdout]     |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Comment`
[INFO] [stdout]  --> src/token_grammar.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Comment(Comment),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `TokenGrammar` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/token_grammar.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Comment` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Keyword` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:22:10
[INFO] [stdout]    |
[INFO] [stdout] 22 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ByOriginal`
[INFO] [stdout]   --> src/token_grammar.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 30 |     ByOriginal(token::Type),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Type` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:28:10
[INFO] [stdout]    |
[INFO] [stdout] 28 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Literal` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Any`
[INFO] [stdout]   --> src/token_grammar.rs:51:5
[INFO] [stdout]    |
[INFO] [stdout] 51 |     Any
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Symbol` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/token_grammar.rs:46:10
[INFO] [stdout]    |
[INFO] [stdout] 46 | #[derive(Debug, Clone, PartialEq)]
[INFO] [stdout]    |          ^^^^^  ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_comment`
[INFO] [stdout]    --> src/token_grammar.rs:129:18
[INFO] [stdout]     |
[INFO] [stdout] 129 |     pub const fn any_comment() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_keyword`
[INFO] [stdout]    --> src/token_grammar.rs:137:18
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub const fn any_keyword() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `from_type`
[INFO] [stdout]    --> src/token_grammar.rs:141:18
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub const fn from_type(o: token::Type) -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_literal`
[INFO] [stdout]    --> src/token_grammar.rs:161:18
[INFO] [stdout]     |
[INFO] [stdout] 161 |     pub const fn any_literal() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `any_symbol`
[INFO] [stdout]    --> src/token_grammar.rs:177:18
[INFO] [stdout]     |
[INFO] [stdout] 177 |     pub const fn any_symbol() -> Self {
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ln`
[INFO] [stdout]   --> src/tokenizer.rs:42:14
[INFO] [stdout]    |
[INFO] [stdout] 42 |     const fn ln(&self) -> usize {
[INFO] [stdout]    |              ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `col`
[INFO] [stdout]   --> src/tokenizer.rs:46:14
[INFO] [stdout]    |
[INFO] [stdout] 46 |     const fn col(&self) -> usize {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `outfile`
[INFO] [stdout]   --> src/cli.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     outfile: Option<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/cli.rs:5:10
[INFO] [stdout]    |
[INFO] [stdout] 5  | #[derive(Debug, StructOpt)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opt_level`
[INFO] [stdout]   --> src/cli.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     opt_level: Option<OptLevel>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   --> src/cli.rs:5:10
[INFO] [stdout]    |
[INFO] [stdout] 5  | #[derive(Debug, StructOpt)]
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout]    = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `opt_level`
[INFO] [stdout]   --> src/cli.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn opt_level(&self) -> OptLevel {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "70b07fa83a980cfe83f934f2e1485be8a129f1e81184486b70bc782a5f2d88af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70b07fa83a980cfe83f934f2e1485be8a129f1e81184486b70bc782a5f2d88af", kill_on_drop: false }`
[INFO] [stdout] 70b07fa83a980cfe83f934f2e1485be8a129f1e81184486b70bc782a5f2d88af