[INFO] cloning repository https://github.com/Johan-su/safe_calculator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Johan-su/safe_calculator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohan-su%2Fsafe_calculator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohan-su%2Fsafe_calculator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b28208a91980424b0f90feac8e619436411ccf05
[INFO] documenting Johan-su/safe_calculator against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohan-su%2Fsafe_calculator" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Johan-su/safe_calculator on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Johan-su/safe_calculator
[INFO] finished tweaking git repo https://github.com/Johan-su/safe_calculator
[INFO] tweaked toml for git repo https://github.com/Johan-su/safe_calculator written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Johan-su/safe_calculator already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 906d08c13cfb82c8f7ce88d413e11e2e58ec4f8e7ed28d844d43f96e3bfcc51e
[INFO] running `Command { std: "docker" "start" "-a" "906d08c13cfb82c8f7ce88d413e11e2e58ec4f8e7ed28d844d43f96e3bfcc51e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "906d08c13cfb82c8f7ce88d413e11e2e58ec4f8e7ed28d844d43f96e3bfcc51e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "906d08c13cfb82c8f7ce88d413e11e2e58ec4f8e7ed28d844d43f96e3bfcc51e", kill_on_drop: false }`
[INFO] [stdout] 906d08c13cfb82c8f7ce88d413e11e2e58ec4f8e7ed28d844d43f96e3bfcc51e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3aeed93d2dbdee02e2c8e4e65a389adca24ed1fe3cd6289c71461b43e682a5ef
[INFO] running `Command { std: "docker" "start" "-a" "3aeed93d2dbdee02e2c8e4e65a389adca24ed1fe3cd6289c71461b43e682a5ef", kill_on_drop: false }`
[INFO] [stderr]  Documenting calculator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:42:15
[INFO] [stdout]    |
[INFO] [stdout] 42 |             if(!line.is_err())
[INFO] [stdout]    |               ^              ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 42 -             if(!line.is_err())
[INFO] [stdout] 42 +             if !line.is_err()
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]   --> src/main.rs:83:11
[INFO] [stdout]    |
[INFO] [stdout] 83 |         if(!s.trim().parse::<f32>().is_err())
[INFO] [stdout]    |           ^                                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 83 -         if(!s.trim().parse::<f32>().is_err())
[INFO] [stdout] 83 +         if !s.trim().parse::<f32>().is_err()
[INFO] [stdout]    | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.91s
[INFO] running `Command { std: "docker" "inspect" "3aeed93d2dbdee02e2c8e4e65a389adca24ed1fe3cd6289c71461b43e682a5ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3aeed93d2dbdee02e2c8e4e65a389adca24ed1fe3cd6289c71461b43e682a5ef", kill_on_drop: false }`
[INFO] [stdout] 3aeed93d2dbdee02e2c8e4e65a389adca24ed1fe3cd6289c71461b43e682a5ef