[INFO] fetching crate whiley_file 0.1.0...
[INFO] checking whiley_file-0.1.0 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate whiley_file 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate whiley_file 0.1.0
[INFO] finished tweaking crates.io crate whiley_file 0.1.0
[INFO] tweaked toml for crates.io crate whiley_file 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate whiley_file 0.1.0 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 219a9264ae503718c9c12fd7c0be0b0acca1cbd6cd0309068cb48f5a9f2c0fee
[INFO] running `Command { std: "docker" "start" "-a" "219a9264ae503718c9c12fd7c0be0b0acca1cbd6cd0309068cb48f5a9f2c0fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "219a9264ae503718c9c12fd7c0be0b0acca1cbd6cd0309068cb48f5a9f2c0fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "219a9264ae503718c9c12fd7c0be0b0acca1cbd6cd0309068cb48f5a9f2c0fee", kill_on_drop: false }`
[INFO] [stdout] 219a9264ae503718c9c12fd7c0be0b0acca1cbd6cd0309068cb48f5a9f2c0fee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44b4976cac2440ff0616abbc6c1607ccf563d301e030899b7ed36125bcd76e93
[INFO] running `Command { std: "docker" "start" "-a" "44b4976cac2440ff0616abbc6c1607ccf563d301e030899b7ed36125bcd76e93", kill_on_drop: false }`
[INFO] [stderr]     Checking syntactic_heap v0.3.1
[INFO] [stderr]     Checking whiley_file v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]    --> src/ast.rs:218:15
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub fn is(ast: &AbstractSyntaxTree, t: &Node) -> bool {
[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: `ast`
[INFO] [stdout]    --> src/ast.rs:218:15
[INFO] [stdout]     |
[INFO] [stdout] 218 |     pub fn is(ast: &AbstractSyntaxTree, t: &Node) -> bool {
[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: `slice`
[INFO] [stdout]    --> src/parser.rs:143:6
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let slice = &self.lexer.input[start.start .. end];
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_string` is never used
[INFO] [stdout]    --> src/ast.rs:328:4
[INFO] [stdout]     |
[INFO] [stdout] 328 | fn to_string<T:fmt::Display>(items : &[T]) -> String {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `env` and `mapper` are never read
[INFO] [stdout]   --> src/parser.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Parser<'a, F>
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 46 |     env: Env,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 47 |     /// Provides mechanism for source maps
[INFO] [stdout] 48 |     mapper : F
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `matches` is never used
[INFO] [stdout]    --> src/parser.rs:546:8
[INFO] [stdout]     |
[INFO] [stdout]  52 | / impl<'a,'b,F> Parser<'a,F>
[INFO] [stdout]  53 | | where 'a :'b, F : FnMut(usize,&'a str) {
[INFO] [stdout]     | |______________________________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 546 |       fn matches(&mut self, kind : TokenType) -> Result<Token<'a>> {
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `slice`
[INFO] [stdout]    --> src/parser.rs:143:6
[INFO] [stdout]     |
[INFO] [stdout] 143 |     let slice = &self.lexer.input[start.start .. end];
[INFO] [stdout]     |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_slice`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `to_string` is never used
[INFO] [stdout]    --> src/ast.rs:328:4
[INFO] [stdout]     |
[INFO] [stdout] 328 | fn to_string<T:fmt::Display>(items : &[T]) -> String {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `env` and `mapper` are never read
[INFO] [stdout]   --> src/parser.rs:46:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub struct Parser<'a, F>
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 46 |     env: Env,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 47 |     /// Provides mechanism for source maps
[INFO] [stdout] 48 |     mapper : F
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `matches` is never used
[INFO] [stdout]    --> src/parser.rs:546:8
[INFO] [stdout]     |
[INFO] [stdout]  52 | / impl<'a,'b,F> Parser<'a,F>
[INFO] [stdout]  53 | | where 'a :'b, F : FnMut(usize,&'a str) {
[INFO] [stdout]     | |______________________________________- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 546 |       fn matches(&mut self, kind : TokenType) -> Result<Token<'a>> {
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ast`
[INFO] [stdout]    --> tests/micro.rs:203:9
[INFO] [stdout]     |
[INFO] [stdout] 203 |     let ast = check_parse("function f()->() :\n skip");
[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: `ast`
[INFO] [stdout]    --> tests/micro.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |     let ast = check_type_error("function f() -> ():\n assert b");
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_ast`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `type_mapper` is never used
[INFO] [stdout]    --> tests/micro.rs:364:4
[INFO] [stdout]     |
[INFO] [stdout] 364 | fn type_mapper<'a>(_: usize, _: Type) { }
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "44b4976cac2440ff0616abbc6c1607ccf563d301e030899b7ed36125bcd76e93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44b4976cac2440ff0616abbc6c1607ccf563d301e030899b7ed36125bcd76e93", kill_on_drop: false }`
[INFO] [stdout] 44b4976cac2440ff0616abbc6c1607ccf563d301e030899b7ed36125bcd76e93