[INFO] cloning repository https://github.com/coopersimon/rcalc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/coopersimon/rcalc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoopersimon%2Frcalc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoopersimon%2Frcalc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 16298abb83772d3315f6812a23e2d1a5078f2cdc
[INFO] documenting coopersimon/rcalc against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcoopersimon%2Frcalc" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/coopersimon/rcalc on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/coopersimon/rcalc
[INFO] finished tweaking git repo https://github.com/coopersimon/rcalc
[INFO] tweaked toml for git repo https://github.com/coopersimon/rcalc written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/coopersimon/rcalc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ena v0.13.0
[INFO] [stderr]   Downloaded diff v0.1.11
[INFO] [stderr]   Downloaded syn v0.15.40
[INFO] [stderr]   Downloaded regex-syntax v0.6.10
[INFO] [stderr]   Downloaded lalrpop-util v0.17.1
[INFO] [stderr]   Downloaded lalrpop v0.17.1
[INFO] [stderr]   Downloaded regex v1.2.0
[INFO] [stderr]   Downloaded serde_derive v1.0.97
[INFO] [stderr]   Downloaded backtrace v0.3.33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f4ba5764228e6df6b99253cb6a2c704bcec7cd23e462ec4dfea550eb83fb15c5
[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" "f4ba5764228e6df6b99253cb6a2c704bcec7cd23e462ec4dfea550eb83fb15c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4ba5764228e6df6b99253cb6a2c704bcec7cd23e462ec4dfea550eb83fb15c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4ba5764228e6df6b99253cb6a2c704bcec7cd23e462ec4dfea550eb83fb15c5", kill_on_drop: false }`
[INFO] [stdout] f4ba5764228e6df6b99253cb6a2c704bcec7cd23e462ec4dfea550eb83fb15c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 96b69990b71d675cfb3af91004c6f29d3dd1947be687355b66bc23bcd37ee521
[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" "96b69990b71d675cfb3af91004c6f29d3dd1947be687355b66bc23bcd37ee521", kill_on_drop: false }`
[INFO] [stderr]    Compiling ucd-util v0.1.5
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling opaque-debug v0.2.2
[INFO] [stderr]    Compiling lalrpop-util v0.17.1
[INFO] [stderr]    Compiling block-padding v0.1.4
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling ena v0.13.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling serde v1.0.97
[INFO] [stderr]    Compiling regex-syntax v0.6.10
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling regex v1.2.0
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.17.1
[INFO] [stderr]    Compiling rcalc v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting rcalc v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]     --> /opt/rustwide/target/debug/build/rcalc-e0c7022247612f14/out/rcalc.rs:2961:5
[INFO] [stdout]      |
[INFO] [stdout] 2961 |     (__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/rcalc-e0c7022247612f14/out/rcalc.rs:2972:5
[INFO] [stdout]      |
[INFO] [stdout] 2972 |     (__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/rcalc-e0c7022247612f14/out/rcalc.rs:3020:5
[INFO] [stdout]      |
[INFO] [stdout] 3020 |     (__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/rcalc-e0c7022247612f14/out/rcalc.rs:3068:5
[INFO] [stdout]      |
[INFO] [stdout] 3068 |     (__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/rcalc-e0c7022247612f14/out/rcalc.rs:3118:5
[INFO] [stdout]      |
[INFO] [stdout] 3118 |     (__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/rcalc-e0c7022247612f14/out/rcalc.rs:3142:5
[INFO] [stdout]      |
[INFO] [stdout] 3142 |     (__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/rcalc-e0c7022247612f14/out/rcalc.rs:3165:5
[INFO] [stdout]      |
[INFO] [stdout] 3165 |     (__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/rcalc-e0c7022247612f14/out/rcalc.rs:3211:5
[INFO] [stdout]      |
[INFO] [stdout] 3211 |     (__0)
[INFO] [stdout]      |     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 12s
[INFO] running `Command { std: "docker" "inspect" "96b69990b71d675cfb3af91004c6f29d3dd1947be687355b66bc23bcd37ee521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96b69990b71d675cfb3af91004c6f29d3dd1947be687355b66bc23bcd37ee521", kill_on_drop: false }`
[INFO] [stdout] 96b69990b71d675cfb3af91004c6f29d3dd1947be687355b66bc23bcd37ee521