[INFO] fetching crate lib-ruby-parser 3.0.7...
[INFO] checking lib-ruby-parser-3.0.7 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate lib-ruby-parser 3.0.7 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate lib-ruby-parser 3.0.7 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate lib-ruby-parser 3.0.7
[INFO] finished tweaking crates.io crate lib-ruby-parser 3.0.7
[INFO] tweaked toml for crates.io crate lib-ruby-parser 3.0.7 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate lib-ruby-parser 3.0.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded symbolic-demangle v8.3.0
[INFO] [stderr]   Downloaded lib-ruby-parser-nodes v0.25.0
[INFO] [stderr]   Downloaded lib-ruby-parser-bindings v0.6.0
[INFO] [stderr]   Downloaded pprof v0.5.0
[INFO] [stderr]   Downloaded symbolic-common v8.3.0
[INFO] [stderr]   Downloaded rust-bison-skeleton v0.29.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6a033c0a2dd72533a726cae7e09bca26f14ea200cf92e80d5abddd828642784
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a6a033c0a2dd72533a726cae7e09bca26f14ea200cf92e80d5abddd828642784", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6a033c0a2dd72533a726cae7e09bca26f14ea200cf92e80d5abddd828642784", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6a033c0a2dd72533a726cae7e09bca26f14ea200cf92e80d5abddd828642784", kill_on_drop: false }`
[INFO] [stdout] a6a033c0a2dd72533a726cae7e09bca26f14ea200cf92e80d5abddd828642784
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ae7978c1da1ece57b78595e6980a9134f709052775c68d0bbdf2957c569399a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4ae7978c1da1ece57b78595e6980a9134f709052775c68d0bbdf2957c569399a", 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]    Compiling lib-ruby-parser v3.0.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `toksize`
[INFO] [stdout]   --> src/source/buffer.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub(crate) toksize: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ruby_sourcefile`
[INFO] [stdout]   --> src/source/buffer.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub(crate) ruby_sourcefile: Vec<char>, /* current source file */
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ruby_sourcefile_string`
[INFO] [stdout]   --> src/source/buffer.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub(crate) ruby_sourcefile_string: Vec<char>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `max_numparam`
[INFO] [stdout]   --> src/lexer/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub(crate) max_numparam: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `yystack`
[INFO] [stdout]      --> src/parser.rs:11325:5
[INFO] [stdout]       |
[INFO] [stdout] 11325 |     yystack: YYStack,
[INFO] [stdout]       |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `toksize`
[INFO] [stdout]   --> src/source/buffer.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub(crate) toksize: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ruby_sourcefile`
[INFO] [stdout]   --> src/source/buffer.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub(crate) ruby_sourcefile: Vec<char>, /* current source file */
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ruby_sourcefile_string`
[INFO] [stdout]   --> src/source/buffer.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub(crate) ruby_sourcefile_string: Vec<char>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `max_numparam`
[INFO] [stdout]   --> src/lexer/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub(crate) max_numparam: usize,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `yystack`
[INFO] [stdout]      --> src/parser.rs:11325:5
[INFO] [stdout]       |
[INFO] [stdout] 11325 |     yystack: YYStack,
[INFO] [stdout]       |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.39s
[INFO] running `Command { std: "docker" "inspect" "4ae7978c1da1ece57b78595e6980a9134f709052775c68d0bbdf2957c569399a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ae7978c1da1ece57b78595e6980a9134f709052775c68d0bbdf2957c569399a", kill_on_drop: false }`
[INFO] [stdout] 4ae7978c1da1ece57b78595e6980a9134f709052775c68d0bbdf2957c569399a