[INFO] fetching crate antlr4rust 0.3.0-beta2...
[INFO] checking antlr4rust-0.3.0-beta2 against master#8f21a5c92ea55c348c275a1bc4fedbdf181e0d64 for pr-143011
[INFO] extracting crate antlr4rust 0.3.0-beta2 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate antlr4rust 0.3.0-beta2
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate antlr4rust 0.3.0-beta2
[INFO] tweaked toml for crates.io crate antlr4rust 0.3.0-beta2 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate antlr4rust 0.3.0-beta2 on toolchain 8f21a5c92ea55c348c275a1bc4fedbdf181e0d64
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate antlr4rust 0.3.0-beta2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded murmur3 v0.4.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef20ac915c49e5f4f8a6a5cf4d28c2b33ac9b789862f72b5e9ad94e1a90907e1
[INFO] running `Command { std: "docker" "start" "-a" "ef20ac915c49e5f4f8a6a5cf4d28c2b33ac9b789862f72b5e9ad94e1a90907e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef20ac915c49e5f4f8a6a5cf4d28c2b33ac9b789862f72b5e9ad94e1a90907e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef20ac915c49e5f4f8a6a5cf4d28c2b33ac9b789862f72b5e9ad94e1a90907e1", kill_on_drop: false }`
[INFO] [stdout] ef20ac915c49e5f4f8a6a5cf4d28c2b33ac9b789862f72b5e9ad94e1a90907e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8f21a5c92ea55c348c275a1bc4fedbdf181e0d64" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0a4582a29deadbb428230813d248577046ef60d3da08bbedb7cbd7784f1ebff9
[INFO] running `Command { std: "docker" "start" "-a" "0a4582a29deadbb428230813d248577046ef60d3da08bbedb7cbd7784f1ebff9", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking smallvec v1.15.0
[INFO] [stderr]     Checking bit-vec v0.8.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking uuid v1.17.0
[INFO] [stderr]     Checking typed-arena v2.0.2
[INFO] [stderr]     Checking once_cell v1.21.3
[INFO] [stderr]     Checking better_any v0.2.0
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking bit-set v0.8.0
[INFO] [stderr]     Checking murmur3 v0.4.1
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking antlr4rust v0.3.0-beta2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused attribute `allow`
[INFO] [stdout]   --> src/token_factory.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[allow(non_upper_case_globals)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the built-in attribute `allow` will be ignored, since it's applied to the macro invocation `lazy_static`
[INFO] [stdout]   --> src/token_factory.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | lazy_static! {
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused attribute `allow`
[INFO] [stdout]   --> src/token_factory.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #[allow(non_upper_case_globals)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the built-in attribute `allow` will be ignored, since it's applied to the macro invocation `lazy_static`
[INFO] [stdout]   --> src/token_factory.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | lazy_static! {
[INFO] [stdout]    | ^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_attributes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/error_strategy.rs:584:13
[INFO] [stdout]     |
[INFO] [stdout] 580 | /             loop {
[INFO] [stdout] 581 | |                 ctx.set_exception(e.clone());
[INFO] [stdout] 582 | |                 ctx = ctx.get_parent()?
[INFO] [stdout] 583 | |             }
[INFO] [stdout]     | |_____________- any code following this expression is unreachable
[INFO] [stdout] 584 |               Some(())
[INFO] [stdout]     |               ^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/error_strategy.rs:584:13
[INFO] [stdout]     |
[INFO] [stdout] 580 | /             loop {
[INFO] [stdout] 581 | |                 ctx.set_exception(e.clone());
[INFO] [stdout] 582 | |                 ctx = ctx.get_parent()?
[INFO] [stdout] 583 | |             }
[INFO] [stdout]     | |_____________- any code following this expression is unreachable
[INFO] [stdout] 584 |               Some(())
[INFO] [stdout]     |               ^^^^^^^^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rule_names`
[INFO] [stdout]    --> src/tree.rs:142:29
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn get_node_text(&self, rule_names: &[&str]) -> String {
[INFO] [stdout]     |                             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rule_names`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aggregate`
[INFO] [stdout]    --> src/tree.rs:292:33
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn aggregate_results(&self, aggregate: Self::Return, next: Self::Return) -> Self::Return {
[INFO] [stdout]     |                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_aggregate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/tree.rs:298:9
[INFO] [stdout]     |
[INFO] [stdout] 298 |         node: &<Self::Node as ParserNodeType<'input>>::Type,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current`
[INFO] [stdout]    --> src/tree.rs:299:9
[INFO] [stdout]     |
[INFO] [stdout] 299 |         current: &Self::Return,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rule_names`
[INFO] [stdout]    --> src/tree.rs:142:29
[INFO] [stdout]     |
[INFO] [stdout] 142 |     fn get_node_text(&self, rule_names: &[&str]) -> String {
[INFO] [stdout]     |                             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_rule_names`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aggregate`
[INFO] [stdout]    --> src/tree.rs:292:33
[INFO] [stdout]     |
[INFO] [stdout] 292 |     fn aggregate_results(&self, aggregate: Self::Return, next: Self::Return) -> Self::Return {
[INFO] [stdout]     |                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_aggregate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> src/tree.rs:298:9
[INFO] [stdout]     |
[INFO] [stdout] 298 |         node: &<Self::Node as ParserNodeType<'input>>::Type,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current`
[INFO] [stdout]    --> src/tree.rs:299:9
[INFO] [stdout]     |
[INFO] [stdout] 299 |         current: &Self::Return,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `read_only` and `generate_rule_bypass_transitions` are never read
[INFO] [stdout]  --> src/atn_deserialization_options.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct ATNDeserializationOptions {
[INFO] [stdout]   |            ------------------------- fields in this struct
[INFO] [stdout] 3 |     read_only: bool,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 4 |     verify_atn: bool,
[INFO] [stdout] 5 |     generate_rule_bypass_transitions: bool,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ATNDeserializationOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `drop` is never used
[INFO] [stdout]   --> src/dfa.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub(crate) trait ScopeExt: Sized {
[INFO] [stdout]    |                  -------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn drop(self) {}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `predicate_index` is never read
[INFO] [stdout]    --> src/errors.rs:225:5
[INFO] [stdout]     |
[INFO] [stdout] 222 | pub struct FailedPredicateError {
[INFO] [stdout]     |            -------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 225 |     predicate_index: isize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FailedPredicateError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Sealed` is never used
[INFO] [stdout]   --> src/utils.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub trait Sealed {}
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> tests/perf.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `read_only` and `generate_rule_bypass_transitions` are never read
[INFO] [stdout]  --> src/atn_deserialization_options.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct ATNDeserializationOptions {
[INFO] [stdout]   |            ------------------------- fields in this struct
[INFO] [stdout] 3 |     read_only: bool,
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 4 |     verify_atn: bool,
[INFO] [stdout] 5 |     generate_rule_bypass_transitions: bool,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `ATNDeserializationOptions` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `drop` is never used
[INFO] [stdout]   --> src/dfa.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub(crate) trait ScopeExt: Sized {
[INFO] [stdout]    |                  -------- method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 33 |     fn drop(self) {}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `predicate_index` is never read
[INFO] [stdout]    --> src/errors.rs:225:5
[INFO] [stdout]     |
[INFO] [stdout] 222 | pub struct FailedPredicateError {
[INFO] [stdout]     |            -------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 225 |     predicate_index: isize,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FailedPredicateError` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Sealed` is never used
[INFO] [stdout]   --> src/utils.rs:18:11
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub trait Sealed {}
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> tests/visitors_tests.rs:128:17
[INFO] [stdout]     |
[INFO] [stdout] 128 |                 node: &<Self::Node as ParserNodeType<'_>>::Type,
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `node`
[INFO] [stdout]    --> tests/visitors_tests.rs:179:17
[INFO] [stdout]     |
[INFO] [stdout] 179 |                 node: &<Self::Node as ParserNodeType<'_>>::Type,
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_node`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `current`
[INFO] [stdout]    --> tests/visitors_tests.rs:180:17
[INFO] [stdout]     |
[INFO] [stdout] 180 |                 current: &Self::Return,
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_current`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `aggregate`
[INFO] [stdout]    --> tests/visitors_tests.rs:206:17
[INFO] [stdout]     |
[INFO] [stdout] 206 |                 aggregate: Self::Return,
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_aggregate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next`
[INFO] [stdout]    --> tests/visitors_tests.rs:207:17
[INFO] [stdout]     |
[INFO] [stdout] 207 |                 next: Self::Return,
[INFO] [stdout]     |                 ^^^^ help: if this is intentional, prefix it with an underscore: `_next`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestVisitorUnit` is never constructed
[INFO] [stdout]    --> tests/visitors_tests.rs:140:16
[INFO] [stdout]     |
[INFO] [stdout] 140 |         struct TestVisitorUnit(String);
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test_should_not_visit_EOF` should have a snake case name
[INFO] [stdout]    --> tests/visitors_tests.rs:106:8
[INFO] [stdout]     |
[INFO] [stdout] 106 |     fn test_should_not_visit_EOF() {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `test_should_not_visit_eof`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]   --> tests/general_tests.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |     use std::io::Read;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.24s
[INFO] running `Command { std: "docker" "inspect" "0a4582a29deadbb428230813d248577046ef60d3da08bbedb7cbd7784f1ebff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a4582a29deadbb428230813d248577046ef60d3da08bbedb7cbd7784f1ebff9", kill_on_drop: false }`
[INFO] [stdout] 0a4582a29deadbb428230813d248577046ef60d3da08bbedb7cbd7784f1ebff9
