[INFO] cloning repository https://github.com/chirsz-ever/cminus
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/chirsz-ever/cminus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchirsz-ever%2Fcminus"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchirsz-ever%2Fcminus'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 72bc799191dfeec09dc8032b18b0db58215baab5
[INFO] checking chirsz-ever/cminus against master#6d69caba110c0c2fb90180df1cbc8be5033b91d4 for pr-69530
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fchirsz-ever%2Fcminus" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/chirsz-ever/cminus on toolchain 6d69caba110c0c2fb90180df1cbc8be5033b91d4
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/chirsz-ever/cminus
[INFO] finished tweaking git repo https://github.com/chirsz-ever/cminus
[INFO] tweaked toml for git repo https://github.com/chirsz-ever/cminus written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/chirsz-ever/cminus already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+6d69caba110c0c2fb90180df1cbc8be5033b91d4" "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] f397ffa763b981cebffc34cd94e4a5159b4d1d23ae6eedfa533979f304d5a0a8
[INFO] running `"docker" "start" "-a" "f397ffa763b981cebffc34cd94e4a5159b4d1d23ae6eedfa533979f304d5a0a8"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling pest_generator v2.1.1
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling sha2 v0.8.1
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.17.2
[INFO] [stderr]    Compiling cminus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/cminus-3318605629b292a5/out/parser.rs:4581:5
[INFO] [stderr]      |
[INFO] [stderr] 4581 |     (__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/cminus-3318605629b292a5/out/parser.rs:4899:5
[INFO] [stderr]      |
[INFO] [stderr] 4899 |     (__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/cminus-3318605629b292a5/out/parser.rs:4910:5
[INFO] [stderr]      |
[INFO] [stderr] 4910 |     (__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/cminus-3318605629b292a5/out/parser.rs:5297:5
[INFO] [stderr]      |
[INFO] [stderr] 5297 |     (__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/cminus-3318605629b292a5/out/parser.rs:5308:5
[INFO] [stderr]      |
[INFO] [stderr] 5308 |     (__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/cminus-3318605629b292a5/out/parser.rs:5343:5
[INFO] [stderr]      |
[INFO] [stderr] 5343 |     (__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/cminus-3318605629b292a5/out/parser.rs:5354:5
[INFO] [stderr]      |
[INFO] [stderr] 5354 |     (__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/cminus-3318605629b292a5/out/parser.rs:5400:5
[INFO] [stderr]      |
[INFO] [stderr] 5400 |     (__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/cminus-3318605629b292a5/out/parser.rs:4581:5
[INFO] [stderr]      |
[INFO] [stderr] 4581 |     (__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/cminus-3318605629b292a5/out/parser.rs:4899:5
[INFO] [stderr]      |
[INFO] [stderr] 4899 |     (__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/cminus-3318605629b292a5/out/parser.rs:4910:5
[INFO] [stderr]      |
[INFO] [stderr] 4910 |     (__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/cminus-3318605629b292a5/out/parser.rs:5297:5
[INFO] [stderr]      |
[INFO] [stderr] 5297 |     (__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/cminus-3318605629b292a5/out/parser.rs:5308:5
[INFO] [stderr]      |
[INFO] [stderr] 5308 |     (__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/cminus-3318605629b292a5/out/parser.rs:5343:5
[INFO] [stderr]      |
[INFO] [stderr] 5343 |     (__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/cminus-3318605629b292a5/out/parser.rs:5354:5
[INFO] [stderr]      |
[INFO] [stderr] 5354 |     (__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/cminus-3318605629b292a5/out/parser.rs:5400:5
[INFO] [stderr]      |
[INFO] [stderr] 5400 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 10s
[INFO] running `"docker" "inspect" "f397ffa763b981cebffc34cd94e4a5159b4d1d23ae6eedfa533979f304d5a0a8"`
[INFO] running `"docker" "rm" "-f" "f397ffa763b981cebffc34cd94e4a5159b4d1d23ae6eedfa533979f304d5a0a8"`
[INFO] [stdout] f397ffa763b981cebffc34cd94e4a5159b4d1d23ae6eedfa533979f304d5a0a8