[INFO] updating cached repository https://github.com/nrc/clyde
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 43fcd18cbbe417f88baf736fce94f3d572ff43ea
[INFO] checking nrc/clyde against master#fdc0011561c6365c596dfd8fa1ef388162bc89c7 for pr-66504-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnrc%2Fclyde" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nrc/clyde on toolchain fdc0011561c6365c596dfd8fa1ef388162bc89c7
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/nrc/clyde
[INFO] finished tweaking git repo https://github.com/nrc/clyde
[INFO] tweaked toml for git repo https://github.com/nrc/clyde written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/nrc/clyde already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+fdc0011561c6365c596dfd8fa1ef388162bc89c7" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 34687316ddb7035b0e4516fa4a4258e5c0c01c9f59c5168798067dce8df36b47
[INFO] running `"docker" "start" "-a" "34687316ddb7035b0e4516fa4a4258e5c0c01c9f59c5168798067dce8df36b47"`
[INFO] [stderr]     Checking rls-span v0.5.2
[INFO] [stderr]     Checking fst v0.3.3
[INFO] [stderr]    Compiling syn v0.15.40
[INFO] [stderr]     Checking rls-data v0.19.0
[INFO] [stderr]    Compiling derive-new v0.5.7
[INFO] [stderr]     Checking rls-analysis v0.18.1
[INFO] [stderr]     Checking clyde v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/env/repl.rs:42:25
[INFO] [stderr]    |
[INFO] [stderr] 42 |                     let result = self.interpret(node);
[INFO] [stderr]    |                         ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `interp`
[INFO] [stderr]    --> src/front/mod.rs:281:17
[INFO] [stderr]     |
[INFO] [stderr] 281 |         let mut interp = Interpreter::new(&MockEnv);
[INFO] [stderr]     |                 ^^^^^^ help: consider prefixing with an underscore: `_interp`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/front/mod.rs:281:13
[INFO] [stderr]     |
[INFO] [stderr] 281 |         let mut interp = Interpreter::new(&MockEnv);
[INFO] [stderr]     |             ----^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `result`
[INFO] [stderr]   --> src/env/repl.rs:42:25
[INFO] [stderr]    |
[INFO] [stderr] 42 |                     let result = self.interpret(node);
[INFO] [stderr]    |                         ^^^^^^ help: consider prefixing with an underscore: `_result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `config`
[INFO] [stderr]   --> src/env/repl.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     config: Config,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `string`
[INFO] [stderr]   --> src/front/data.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub fn string(s: String) -> Value {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect_string`
[INFO] [stderr]   --> src/front/data.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn expect_string(self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]    --> src/front/data.rs:114:5
[INFO] [stderr]     |
[INFO] [stderr] 114 |     String,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `element_type`
[INFO] [stderr]    --> src/front/data.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 |     pub fn element_type(&self) -> Option<&Type> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]    --> src/front/data.rs:182:5
[INFO] [stderr]     |
[INFO] [stderr] 182 |     String(String),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Exactly`
[INFO] [stderr]  --> src/front/function.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Exactly(usize),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AtLeast`
[INFO] [stderr]   --> src/front/function.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     AtLeast(usize),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `interpret`
[INFO] [stderr]   --> src/front/mod.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn interpret(mut self, program: ast::Program) -> Result<SymbolTable, Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `result`
[INFO] [stderr]    --> src/front/mod.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     result: Value,
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `assert_ident`
[INFO] [stderr]    --> src/parse/parser.rs:256:5
[INFO] [stderr]     |
[INFO] [stderr] 256 |     fn assert_ident(&mut self, s: &str) -> Result<(), Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PlusEq`
[INFO] [stderr]   --> src/parse/tokens.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     PlusEq,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ArrowLeft`
[INFO] [stderr]   --> src/parse/tokens.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     ArrowLeft,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Other`
[INFO] [stderr]   --> src/parse/mod.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Other(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/front/mod.rs:40:17
[INFO] [stderr]    |
[INFO] [stderr] 40 |                 self.show_result(&value);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/front/mod.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 self.show_result(&value);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `config`
[INFO] [stderr]   --> src/env/repl.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     config: Config,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Other`
[INFO] [stderr]   --> src/file_system/mod.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     Other(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `number`
[INFO] [stderr]   --> src/front/data.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn number(n: usize) -> Value {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `string`
[INFO] [stderr]   --> src/front/data.rs:69:5
[INFO] [stderr]    |
[INFO] [stderr] 69 |     pub fn string(s: String) -> Value {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect_string`
[INFO] [stderr]   --> src/front/data.rs:83:5
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn expect_string(self) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Number`
[INFO] [stderr]    --> src/front/data.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 108 |     Number,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]    --> src/front/data.rs:114:5
[INFO] [stderr]     |
[INFO] [stderr] 114 |     String,
[INFO] [stderr]     |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `element_type`
[INFO] [stderr]    --> src/front/data.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 |     pub fn element_type(&self) -> Option<&Type> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Number`
[INFO] [stderr]    --> src/front/data.rs:176:5
[INFO] [stderr]     |
[INFO] [stderr] 176 |     Number(usize),
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `String`
[INFO] [stderr]    --> src/front/data.rs:182:5
[INFO] [stderr]     |
[INFO] [stderr] 182 |     String(String),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Exactly`
[INFO] [stderr]  --> src/front/function.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     Exactly(usize),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `AtLeast`
[INFO] [stderr]   --> src/front/function.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     AtLeast(usize),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `interpret`
[INFO] [stderr]   --> src/front/mod.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn interpret(mut self, program: ast::Program) -> Result<SymbolTable, Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `result`
[INFO] [stderr]    --> src/front/mod.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     result: Value,
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `assert_ident`
[INFO] [stderr]    --> src/parse/parser.rs:256:5
[INFO] [stderr]     |
[INFO] [stderr] 256 |     fn assert_ident(&mut self, s: &str) -> Result<(), Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `PlusEq`
[INFO] [stderr]   --> src/parse/tokens.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     PlusEq,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `ArrowLeft`
[INFO] [stderr]   --> src/parse/tokens.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     ArrowLeft,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Other`
[INFO] [stderr]   --> src/parse/mod.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     Other(String),
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/front/mod.rs:40:17
[INFO] [stderr]    |
[INFO] [stderr] 40 |                 self.show_result(&value);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/front/mod.rs:45:17
[INFO] [stderr]    |
[INFO] [stderr] 45 |                 self.show_result(&value);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.14s
[INFO] running `"docker" "inspect" "34687316ddb7035b0e4516fa4a4258e5c0c01c9f59c5168798067dce8df36b47"`
[INFO] running `"docker" "rm" "-f" "34687316ddb7035b0e4516fa4a4258e5c0c01c9f59c5168798067dce8df36b47"`
[INFO] [stdout] 34687316ddb7035b0e4516fa4a4258e5c0c01c9f59c5168798067dce8df36b47