[INFO] cloning repository https://github.com/mollyporph/rustiptool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mollyporph/rustiptool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmollyporph%2Frustiptool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmollyporph%2Frustiptool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9ecf01ce0729a75ecbe5890064e6e8f425729e1
[INFO] checking mollyporph/rustiptool against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmollyporph%2Frustiptool" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mollyporph/rustiptool on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mollyporph/rustiptool
[INFO] finished tweaking git repo https://github.com/mollyporph/rustiptool
[INFO] tweaked toml for git repo https://github.com/mollyporph/rustiptool written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mollyporph/rustiptool already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] 4f338feaa849eb160c8de57c24e8d7e379fa3252fb28fb0bcb879ddd26ab870c
[INFO] running `Command { std: "docker" "start" "-a" "4f338feaa849eb160c8de57c24e8d7e379fa3252fb28fb0bcb879ddd26ab870c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f338feaa849eb160c8de57c24e8d7e379fa3252fb28fb0bcb879ddd26ab870c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f338feaa849eb160c8de57c24e8d7e379fa3252fb28fb0bcb879ddd26ab870c", kill_on_drop: false }`
[INFO] [stdout] 4f338feaa849eb160c8de57c24e8d7e379fa3252fb28fb0bcb879ddd26ab870c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "RUSTFLAGS=--cap-lints=forbid" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ff77a284cd0375ae08e2722a10ebb5b002acbb2a600abec5e9801605fc2d6bd
[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" "2ff77a284cd0375ae08e2722a10ebb5b002acbb2a600abec5e9801605fc2d6bd", kill_on_drop: false }`
[INFO] [stderr]     Checking iptools v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/main.rs:18:33
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn swap_endian(num: u32) -> u32{((num & 0xff) << 24 | (num & 0xff00) << 8 | (num & 0xff0000) >> 8  | (num & 0xff000000) >> 24)} 
[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]   --> src/main.rs:18:33
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn swap_endian(num: u32) -> u32{((num & 0xff) << 24 | (num & 0xff00) << 8 | (num & 0xff0000) >> 8  | (num & 0xff000000) >> 24)} 
[INFO] [stdout]    |                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "2ff77a284cd0375ae08e2722a10ebb5b002acbb2a600abec5e9801605fc2d6bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ff77a284cd0375ae08e2722a10ebb5b002acbb2a600abec5e9801605fc2d6bd", kill_on_drop: false }`
[INFO] [stdout] 2ff77a284cd0375ae08e2722a10ebb5b002acbb2a600abec5e9801605fc2d6bd