[INFO] fetching crate antlr-rust 0.2.0...
[INFO] testing antlr-rust-0.2.0 against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] extracting crate antlr-rust 0.2.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate antlr-rust 0.2.0 on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate antlr-rust 0.2.0
[INFO] finished tweaking crates.io crate antlr-rust 0.2.0
[INFO] tweaked toml for crates.io crate antlr-rust 0.2.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84ebc07e4aa96fe057923282a231d4d79d306d28f5f406c92991f304def36357
[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" "84ebc07e4aa96fe057923282a231d4d79d306d28f5f406c92991f304def36357", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84ebc07e4aa96fe057923282a231d4d79d306d28f5f406c92991f304def36357", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84ebc07e4aa96fe057923282a231d4d79d306d28f5f406c92991f304def36357", kill_on_drop: false }`
[INFO] [stdout] 84ebc07e4aa96fe057923282a231d4d79d306d28f5f406c92991f304def36357
[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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08925f70bf1553035bcfd23284324b73b891bc523d2a12bc15b85ae09bc7f4ff
[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" "08925f70bf1553035bcfd23284324b73b891bc523d2a12bc15b85ae09bc7f4ff", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling smallvec v1.6.1
[INFO] [stderr]    Compiling scopeguard v1.1.0
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling bit-vec v0.6.3
[INFO] [stderr]    Compiling typed-arena v2.0.1
[INFO] [stderr]    Compiling uuid v0.8.2
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling instant v0.1.10
[INFO] [stderr]    Compiling better_typeid_derive v0.1.1
[INFO] [stderr]    Compiling lock_api v0.4.4
[INFO] [stderr]    Compiling bit-set v0.5.2
[INFO] [stderr]    Compiling murmur3 v0.4.1
[INFO] [stderr]    Compiling better_any v0.1.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.3
[INFO] [stderr]    Compiling parking_lot v0.11.1
[INFO] [stderr]    Compiling antlr-rust v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `cached_hash`
[INFO] [stdout]   --> src/atn_config_set.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     cached_hash: u64,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `raw`
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(raw)]
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]    --> src/lexer.rs:78:1
[INFO] [stdout]     |
[INFO] [stdout] 78  | / pub struct BaseLexer<
[INFO] [stdout] 79  | |     'input,
[INFO] [stdout] 80  | |     T: LexerRecog<'input, Self> + 'static,
[INFO] [stdout] 81  | |     Input: CharStream<TF::From>,
[INFO] [stdout] ...   |
[INFO] [stdout] 109 | |     pub text: Option<<TF::Data as ToOwned>::Owned>,
[INFO] [stdout] 110 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:16:9
[INFO] [stdout]     |
[INFO] [stdout] 16  | #![warn(missing_debug_implementations)]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type does not implement `Debug`; consider adding `#[derive(Debug)]` or a manual implementation
[INFO] [stdout]    --> src/parser.rs:107:1
[INFO] [stdout]     |
[INFO] [stdout] 107 | / pub struct BaseParser<
[INFO] [stdout] 108 | |     'input,
[INFO] [stdout] 109 | |     Ext: 'static, //: ParserRecog<'input, Self> + 'static, // user provided behavior, such as semantic predicates
[INFO] [stdout] 110 | |     I: TokenStream<'input>, // input stream
[INFO] [stdout] ...   |
[INFO] [stdout] 149 | |     pd: PhantomData<fn() -> &'input str>,
[INFO] [stdout] 150 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `antlr-rust`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "08925f70bf1553035bcfd23284324b73b891bc523d2a12bc15b85ae09bc7f4ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08925f70bf1553035bcfd23284324b73b891bc523d2a12bc15b85ae09bc7f4ff", kill_on_drop: false }`
[INFO] [stdout] 08925f70bf1553035bcfd23284324b73b891bc523d2a12bc15b85ae09bc7f4ff