[INFO] crate math-calc 0.1.0 is already in cache
[INFO] checking math-calc-0.1.0 against try#e6563ac70cbfd3196492061900e9e9793e065e4d for pr-69410
[INFO] extracting crate math-calc 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate math-calc 0.1.0 on toolchain e6563ac70cbfd3196492061900e9e9793e065e4d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate math-calc 0.1.0
[INFO] finished tweaking crates.io crate math-calc 0.1.0
[INFO] tweaked toml for crates.io crate math-calc 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 539f922a3369493ab2347bb583a5e5cbfbb9ca071ab1f3686d2e2c8346fe9cb9
[INFO] running `"docker" "start" "-a" "539f922a3369493ab2347bb583a5e5cbfbb9ca071ab1f3686d2e2c8346fe9cb9"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.17.2
[INFO] [stderr]    Compiling math-calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:995:5
[INFO] [stderr]     |
[INFO] [stderr] 995 |     (__0)
[INFO] [stderr]     |     ^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1006:5
[INFO] [stderr]      |
[INFO] [stderr] 1006 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1071:5
[INFO] [stderr]      |
[INFO] [stderr] 1071 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1108:5
[INFO] [stderr]      |
[INFO] [stderr] 1108 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1132:5
[INFO] [stderr]      |
[INFO] [stderr] 1132 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1143:5
[INFO] [stderr]      |
[INFO] [stderr] 1143 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1156:5
[INFO] [stderr]      |
[INFO] [stderr] 1156 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]    --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:995:5
[INFO] [stderr]     |
[INFO] [stderr] 995 |     (__0)
[INFO] [stderr]     |     ^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1006:5
[INFO] [stderr]      |
[INFO] [stderr] 1006 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1071:5
[INFO] [stderr]      |
[INFO] [stderr] 1071 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1108:5
[INFO] [stderr]      |
[INFO] [stderr] 1108 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1132:5
[INFO] [stderr]      |
[INFO] [stderr] 1132 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1143:5
[INFO] [stderr]      |
[INFO] [stderr] 1143 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/math-calc-a0532999f16c53d0/out/grammar.rs:1156:5
[INFO] [stderr]      |
[INFO] [stderr] 1156 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.54s
[INFO] running `"docker" "inspect" "539f922a3369493ab2347bb583a5e5cbfbb9ca071ab1f3686d2e2c8346fe9cb9"`
[INFO] running `"docker" "rm" "-f" "539f922a3369493ab2347bb583a5e5cbfbb9ca071ab1f3686d2e2c8346fe9cb9"`
[INFO] [stdout] 539f922a3369493ab2347bb583a5e5cbfbb9ca071ab1f3686d2e2c8346fe9cb9