[INFO] fetching crate chomatter_syntaxer 0.0.1...
[INFO] checking chomatter_syntaxer-0.0.1 against master#e59540968e0c6fc3c37d92a639b83fc8fcee5e81 for pr-114559
[INFO] extracting crate chomatter_syntaxer 0.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate chomatter_syntaxer 0.0.1 on toolchain e59540968e0c6fc3c37d92a639b83fc8fcee5e81
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate chomatter_syntaxer 0.0.1
[INFO] finished tweaking crates.io crate chomatter_syntaxer 0.0.1
[INFO] tweaked toml for crates.io crate chomatter_syntaxer 0.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded chomatter_commons v0.0.1
[INFO] [stderr]   Downloaded chomatter_lexer v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56de4404db25c1c067608fa0e2d9a33e6cd8b257eecc6ee702fee6b42fddf699
[INFO] running `Command { std: "docker" "start" "-a" "56de4404db25c1c067608fa0e2d9a33e6cd8b257eecc6ee702fee6b42fddf699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56de4404db25c1c067608fa0e2d9a33e6cd8b257eecc6ee702fee6b42fddf699", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56de4404db25c1c067608fa0e2d9a33e6cd8b257eecc6ee702fee6b42fddf699", kill_on_drop: false }`
[INFO] [stdout] 56de4404db25c1c067608fa0e2d9a33e6cd8b257eecc6ee702fee6b42fddf699
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:5c16f4e6c37141f9fef0bc86f7a492d732943053e42aab8461035881e3f53823" "/opt/rustwide/cargo-home/bin/cargo" "+e59540968e0c6fc3c37d92a639b83fc8fcee5e81" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b3238f9d558b23b978b950542e516e3579884a86f2b0d79b02578e4b7c8a42e7
[INFO] running `Command { std: "docker" "start" "-a" "b3238f9d558b23b978b950542e516e3579884a86f2b0d79b02578e4b7c8a42e7", kill_on_drop: false }`
[INFO] [stderr]     Checking chomatter_commons v0.0.1
[INFO] [stderr]     Checking chomatter_lexer v0.0.1
[INFO] [stderr]     Checking chomatter_syntaxer v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Segment`
[INFO] [stdout]  --> src/lib.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 |     EGenericToken, GenericToken, Segment,
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Segment`
[INFO] [stdout]  --> src/lib.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 |     EGenericToken, GenericToken, Segment,
[INFO] [stdout]   |                                  ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/lib.rs:178:24
[INFO] [stdout]     |
[INFO] [stdout] 178 |                     if (walker.current().kind == EGenericToken::LeftParen) {
[INFO] [stdout]     |                        ^                                                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 178 -                     if (walker.current().kind == EGenericToken::LeftParen) {
[INFO] [stdout] 178 +                     if walker.current().kind == EGenericToken::LeftParen {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/lib.rs:178:24
[INFO] [stdout]     |
[INFO] [stdout] 178 |                     if (walker.current().kind == EGenericToken::LeftParen) {
[INFO] [stdout]     |                        ^                                                 ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 178 -                     if (walker.current().kind == EGenericToken::LeftParen) {
[INFO] [stdout] 178 +                     if walker.current().kind == EGenericToken::LeftParen {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:363:82
[INFO] [stdout]     |
[INFO] [stdout] 363 |             tester.forward_custom(chomatter_commons::walker::EMover::WhileBy(|x, y, z, w| {
[INFO] [stdout]     |                                                                                  ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]    --> src/lib.rs:363:88
[INFO] [stdout]     |
[INFO] [stdout] 363 |             tester.forward_custom(chomatter_commons::walker::EMover::WhileBy(|x, y, z, w| {
[INFO] [stdout]     |                                                                                        ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]    --> src/lib.rs:363:82
[INFO] [stdout]     |
[INFO] [stdout] 363 |             tester.forward_custom(chomatter_commons::walker::EMover::WhileBy(|x, y, z, w| {
[INFO] [stdout]     |                                                                                  ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]    --> src/lib.rs:363:88
[INFO] [stdout]     |
[INFO] [stdout] 363 |             tester.forward_custom(chomatter_commons::walker::EMover::WhileBy(|x, y, z, w| {
[INFO] [stdout]     |                                                                                        ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:502:21
[INFO] [stdout]     |
[INFO] [stdout] 502 |                 let mut value = Walker::cook(&raw);
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:502:21
[INFO] [stdout]     |
[INFO] [stdout] 502 |                 let mut value = Walker::cook(&raw);
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:739:21
[INFO] [stdout]     |
[INFO] [stdout] 739 |                 let mut case_statements = self.parse(data, scope_level + 1);
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:763:21
[INFO] [stdout]     |
[INFO] [stdout] 763 |                 let mut tbody = self.current();
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:764:21
[INFO] [stdout]     |
[INFO] [stdout] 764 |                 let mut body: Statement;
[INFO] [stdout]     |                     ----^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:984:21
[INFO] [stdout]     |
[INFO] [stdout] 984 |                 let mut args = resolve_arguments(self, data);
[INFO] [stdout]     |                     ----^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:739:21
[INFO] [stdout]     |
[INFO] [stdout] 739 |                 let mut case_statements = self.parse(data, scope_level + 1);
[INFO] [stdout]     |                     ----^^^^^^^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:763:21
[INFO] [stdout]     |
[INFO] [stdout] 763 |                 let mut tbody = self.current();
[INFO] [stdout]     |                     ----^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:764:21
[INFO] [stdout]     |
[INFO] [stdout] 764 |                 let mut body: Statement;
[INFO] [stdout]     |                     ----^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:984:21
[INFO] [stdout]     |
[INFO] [stdout] 984 |                 let mut args = resolve_arguments(self, data);
[INFO] [stdout]     |                     ----^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_empty_token` is never used
[INFO] [stdout]   --> src/lib.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn is_empty_token(token: &GenericToken) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_empty_token` is never used
[INFO] [stdout]   --> src/lib.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn is_empty_token(token: &GenericToken) -> bool {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "b3238f9d558b23b978b950542e516e3579884a86f2b0d79b02578e4b7c8a42e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3238f9d558b23b978b950542e516e3579884a86f2b0d79b02578e4b7c8a42e7", kill_on_drop: false }`
[INFO] [stdout] b3238f9d558b23b978b950542e516e3579884a86f2b0d79b02578e4b7c8a42e7
