[INFO] updating cached repository https://github.com/bruno-anjos/alpha
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 56c2034fd0e8ed294213cc2d6622a2fcd9d20d7a
[INFO] checking bruno-anjos/alpha against try#f149601db42efe10ece8b284ab681fd4a6fcb89c for pr-68766
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbruno-anjos%2Falpha" "/workspace/builds/worker-2/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bruno-anjos/alpha on toolchain f149601db42efe10ece8b284ab681fd4a6fcb89c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/bruno-anjos/alpha
[INFO] finished tweaking git repo https://github.com/bruno-anjos/alpha
[INFO] tweaked toml for git repo https://github.com/bruno-anjos/alpha written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/bruno-anjos/alpha already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "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" "+f149601db42efe10ece8b284ab681fd4a6fcb89c" "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] 61179c9c17ac46145a98921158184107b8cd7d553094457c12ff5dc98fdaa9dc
[INFO] running `"docker" "start" "-a" "61179c9c17ac46145a98921158184107b8cd7d553094457c12ff5dc98fdaa9dc"`
[INFO] [stderr]    Compiling syn v0.15.43
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling ena v0.13.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.17.1
[INFO] [stderr]    Compiling alpha v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]      --> /opt/rustwide/target/debug/build/alpha-4272038d800d49b6/out/parser.rs:17668:5
[INFO] [stderr]       |
[INFO] [stderr] 17668 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17679:5
[INFO] [stderr]       |
[INFO] [stderr] 17679 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17690:5
[INFO] [stderr]       |
[INFO] [stderr] 17690 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17701:5
[INFO] [stderr]       |
[INFO] [stderr] 17701 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17712:5
[INFO] [stderr]       |
[INFO] [stderr] 17712 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17723:5
[INFO] [stderr]       |
[INFO] [stderr] 17723 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17734:5
[INFO] [stderr]       |
[INFO] [stderr] 17734 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17745:5
[INFO] [stderr]       |
[INFO] [stderr] 17745 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17668:5
[INFO] [stderr]       |
[INFO] [stderr] 17668 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17679:5
[INFO] [stderr]       |
[INFO] [stderr] 17679 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17690:5
[INFO] [stderr]       |
[INFO] [stderr] 17690 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17756:5
[INFO] [stderr]       |
[INFO] [stderr] 17756 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17767:5
[INFO] [stderr]       |
[INFO] [stderr] 17767 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17778:5
[INFO] [stderr]       |
[INFO] [stderr] 17778 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17919:5
[INFO] [stderr]       |
[INFO] [stderr] 17919 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17943:5
[INFO] [stderr]       |
[INFO] [stderr] 17943 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17701:5
[INFO] [stderr]       |
[INFO] [stderr] 17701 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17712:5
[INFO] [stderr]       |
[INFO] [stderr] 17712 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17723:5
[INFO] [stderr]       |
[INFO] [stderr] 17723 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17734:5
[INFO] [stderr]       |
[INFO] [stderr] 17734 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17745:5
[INFO] [stderr]       |
[INFO] [stderr] 17745 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17756:5
[INFO] [stderr]       |
[INFO] [stderr] 17756 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17767:5
[INFO] [stderr]       |
[INFO] [stderr] 17767 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17778:5
[INFO] [stderr]       |
[INFO] [stderr] 17778 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17919:5
[INFO] [stderr]       |
[INFO] [stderr] 17919 |     (__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/alpha-4272038d800d49b6/out/parser.rs:17943:5
[INFO] [stderr]       |
[INFO] [stderr] 17943 |     (__0)
[INFO] [stderr]       |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 11s
[INFO] running `"docker" "inspect" "61179c9c17ac46145a98921158184107b8cd7d553094457c12ff5dc98fdaa9dc"`
[INFO] running `"docker" "rm" "-f" "61179c9c17ac46145a98921158184107b8cd7d553094457c12ff5dc98fdaa9dc"`
[INFO] [stdout] 61179c9c17ac46145a98921158184107b8cd7d553094457c12ff5dc98fdaa9dc