[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] 736e65defdf185d7a537a12e8f4a0ce89d7ddc7f
[INFO] checking apskhem/c-webassembly against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fapskhem%2Fc-webassembly" "/workspace/builds/worker-89/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-89/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/apskhem/c-webassembly on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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-89/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" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b936715f6ada133c7b31a124f569e54bd0a844de24409c862a81d3ff143869f
[INFO] running `Command { std: "docker" "start" "-a" "6b936715f6ada133c7b31a124f569e54bd0a844de24409c862a81d3ff143869f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b936715f6ada133c7b31a124f569e54bd0a844de24409c862a81d3ff143869f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b936715f6ada133c7b31a124f569e54bd0a844de24409c862a81d3ff143869f", kill_on_drop: false }`
[INFO] [stdout] 6b936715f6ada133c7b31a124f569e54bd0a844de24409c862a81d3ff143869f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1d5b9ebe88d335f88a0271ab2735b0c8bef17ed96f8923130d729665040c4b8
[INFO] running `Command { std: "docker" "start" "-a" "a1d5b9ebe88d335f88a0271ab2735b0c8bef17ed96f8923130d729665040c4b8", 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 memchr v2.4.1
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking predicates-core v1.0.2
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking difflib v0.4.0
[INFO] [stderr]     Checking treeline v0.1.0
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking predicates-tree v1.0.3
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking predicates v2.0.2
[INFO] [stderr]     Checking assert_cmd v2.0.1
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking 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: `args`
[INFO] [stdout]   --> src/io.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn parse_args(args: env::Args) -> Result<ArgumentCollection, &'static str> {
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `range`
[INFO] [stdout]    --> src/token.rs:227:31
[INFO] [stdout]     |
[INFO] [stdout] 227 |         let RawToken { value, range } = value;
[INFO] [stdout]     |                               ^^^^^ help: try ignoring the field: `range: _`
[INFO] [stdout] 
[INFO] [stdout] 
[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: `args`
[INFO] [stdout]   --> src/io.rs:17:19
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn parse_args(args: env::Args) -> Result<ArgumentCollection, &'static str> {
[INFO] [stdout]    |                   ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `range`
[INFO] [stdout]    --> src/token.rs:227:31
[INFO] [stdout]     |
[INFO] [stdout] 227 |         let RawToken { value, range } = value;
[INFO] [stdout]     |                               ^^^^^ help: try ignoring the field: `range: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ArgumentCollection`
[INFO] [stdout]  --> src/io.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ArgumentCollection {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/io.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new(in_file: Option<String>, out_file: Option<String>) -> ArgumentCollection {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_args`
[INFO] [stdout]   --> src/io.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn parse_args(args: env::Args) -> Result<ArgumentCollection, &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_file`
[INFO] [stdout]   --> src/io.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn write_file(path: &str) -> std::io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `GrammarError`
[INFO] [stdout]   --> src/grammar.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum GrammarError {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RegexUnary`
[INFO] [stdout]   --> src/token.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 |     RegexUnary,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RegexBinary`
[INFO] [stdout]   --> src/token.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     RegexBinary,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RegexOperator`
[INFO] [stdout]   --> src/token.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     RegexOperator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RegexAny`
[INFO] [stdout]   --> src/token.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     RegexAny
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]    --> src/token.rs:214:12
[INFO] [stdout]     |
[INFO] [stdout] 214 |     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:218:18
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub const fn range(&self) -> &(usize, usize) {
[INFO] [stdout]     |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ln`
[INFO] [stdout]   --> src/tokenizer.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |     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:45:14
[INFO] [stdout]    |
[INFO] [stdout] 45 |     const fn col(&self) -> usize {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ArgumentCollection`
[INFO] [stdout]  --> src/io.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct ArgumentCollection {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/io.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 |     fn new(in_file: Option<String>, out_file: Option<String>) -> ArgumentCollection {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_args`
[INFO] [stdout]   --> src/io.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub fn parse_args(args: env::Args) -> Result<ArgumentCollection, &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write_file`
[INFO] [stdout]   --> src/io.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub fn write_file(path: &str) -> std::io::Result<()> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `GrammarError`
[INFO] [stdout]   --> src/grammar.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum GrammarError {
[INFO] [stdout]    |          ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RegexUnary`
[INFO] [stdout]   --> src/token.rs:95:5
[INFO] [stdout]    |
[INFO] [stdout] 95 |     RegexUnary,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RegexBinary`
[INFO] [stdout]   --> src/token.rs:96:5
[INFO] [stdout]    |
[INFO] [stdout] 96 |     RegexBinary,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RegexOperator`
[INFO] [stdout]   --> src/token.rs:97:5
[INFO] [stdout]    |
[INFO] [stdout] 97 |     RegexOperator,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RegexAny`
[INFO] [stdout]   --> src/token.rs:98:5
[INFO] [stdout]    |
[INFO] [stdout] 98 |     RegexAny
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `value`
[INFO] [stdout]    --> src/token.rs:214:12
[INFO] [stdout]     |
[INFO] [stdout] 214 |     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:218:18
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub const fn range(&self) -> &(usize, usize) {
[INFO] [stdout]     |                  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `ln`
[INFO] [stdout]   --> src/tokenizer.rs:41:14
[INFO] [stdout]    |
[INFO] [stdout] 41 |     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:45:14
[INFO] [stdout]    |
[INFO] [stdout] 45 |     const fn col(&self) -> usize {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.12s
[INFO] running `Command { std: "docker" "inspect" "a1d5b9ebe88d335f88a0271ab2735b0c8bef17ed96f8923130d729665040c4b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1d5b9ebe88d335f88a0271ab2735b0c8bef17ed96f8923130d729665040c4b8", kill_on_drop: false }`
[INFO] [stdout] a1d5b9ebe88d335f88a0271ab2735b0c8bef17ed96f8923130d729665040c4b8