[INFO] fetching crate zypo-lib 0.0.2...
[INFO] checking zypo-lib-0.0.2 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate zypo-lib 0.0.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate zypo-lib 0.0.2 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zypo-lib 0.0.2
[INFO] finished tweaking crates.io crate zypo-lib 0.0.2
[INFO] tweaked toml for crates.io crate zypo-lib 0.0.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b3bb3c704fa8e758c016811a1a89f2eb0b2d1eb3e882d09e61786d750969878
[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" "6b3bb3c704fa8e758c016811a1a89f2eb0b2d1eb3e882d09e61786d750969878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b3bb3c704fa8e758c016811a1a89f2eb0b2d1eb3e882d09e61786d750969878", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b3bb3c704fa8e758c016811a1a89f2eb0b2d1eb3e882d09e61786d750969878", kill_on_drop: false }`
[INFO] [stdout] 6b3bb3c704fa8e758c016811a1a89f2eb0b2d1eb3e882d09e61786d750969878
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55f8b1c1c29ffefa225ffc34d31473b36a729b979b59a356f51f66c9a9e84338
[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" "55f8b1c1c29ffefa225ffc34d31473b36a729b979b59a356f51f66c9a9e84338", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling typenum v1.12.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling either v1.6.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling ena v0.13.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.17.2
[INFO] [stderr]    Compiling zypo-lib v0.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::parser::scope::Scope`
[INFO] [stdout]   --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::parser::scope::Scope;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4452:5
[INFO] [stdout]      |
[INFO] [stdout] 4452 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4463:5
[INFO] [stdout]      |
[INFO] [stdout] 4463 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4500:5
[INFO] [stdout]      |
[INFO] [stdout] 4500 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4522:5
[INFO] [stdout]      |
[INFO] [stdout] 4522 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4602:5
[INFO] [stdout]      |
[INFO] [stdout] 4602 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4707:5
[INFO] [stdout]      |
[INFO] [stdout] 4707 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4797:5
[INFO] [stdout]      |
[INFO] [stdout] 4797 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4843:5
[INFO] [stdout]      |
[INFO] [stdout] 4843 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4911:5
[INFO] [stdout]      |
[INFO] [stdout] 4911 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4957:5
[INFO] [stdout]      |
[INFO] [stdout] 4957 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:5003:5
[INFO] [stdout]      |
[INFO] [stdout] 5003 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:5246:5
[INFO] [stdout]      |
[INFO] [stdout] 5246 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:5281:5
[INFO] [stdout]      |
[INFO] [stdout] 5281 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:5361:5
[INFO] [stdout]      |
[INFO] [stdout] 5361 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::parser::scope::Scope`
[INFO] [stdout]   --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use crate::parser::scope::Scope;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4452:5
[INFO] [stdout]      |
[INFO] [stdout] 4452 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4463:5
[INFO] [stdout]      |
[INFO] [stdout] 4463 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4500:5
[INFO] [stdout]      |
[INFO] [stdout] 4500 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4522:5
[INFO] [stdout]      |
[INFO] [stdout] 4522 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4602:5
[INFO] [stdout]      |
[INFO] [stdout] 4602 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4707:5
[INFO] [stdout]      |
[INFO] [stdout] 4707 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4797:5
[INFO] [stdout]      |
[INFO] [stdout] 4797 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4843:5
[INFO] [stdout]      |
[INFO] [stdout] 4843 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4911:5
[INFO] [stdout]      |
[INFO] [stdout] 4911 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:4957:5
[INFO] [stdout]      |
[INFO] [stdout] 4957 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:5003:5
[INFO] [stdout]      |
[INFO] [stdout] 5003 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:5246:5
[INFO] [stdout]      |
[INFO] [stdout] 5246 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:5281:5
[INFO] [stdout]      |
[INFO] [stdout] 5281 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/zypo-lib-4dc940b6d32af42b/out/parser/grammar.rs:5361:5
[INFO] [stdout]      |
[INFO] [stdout] 5361 |     (___0)
[INFO] [stdout]      |     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 43s
[INFO] running `Command { std: "docker" "inspect" "55f8b1c1c29ffefa225ffc34d31473b36a729b979b59a356f51f66c9a9e84338", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55f8b1c1c29ffefa225ffc34d31473b36a729b979b59a356f51f66c9a9e84338", kill_on_drop: false }`
[INFO] [stdout] 55f8b1c1c29ffefa225ffc34d31473b36a729b979b59a356f51f66c9a9e84338