[INFO] updating cached repository https://github.com/OneMoreByte/ftp-downloader
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e2df1590183656dd2f046acff2a55ba5da87776
[INFO] documenting OneMoreByte/ftp-downloader against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOneMoreByte%2Fftp-downloader" "/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/OneMoreByte/ftp-downloader on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OneMoreByte/ftp-downloader
[INFO] finished tweaking git repo https://github.com/OneMoreByte/ftp-downloader
[INFO] tweaked toml for git repo https://github.com/OneMoreByte/ftp-downloader written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/OneMoreByte/ftp-downloader already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "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] 37f2cb32298e540ad1f6b25816f64e71c855f78bb8d46b020ebe163507591923
[INFO] running `Command { std: "docker" "start" "-a" "37f2cb32298e540ad1f6b25816f64e71c855f78bb8d46b020ebe163507591923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "37f2cb32298e540ad1f6b25816f64e71c855f78bb8d46b020ebe163507591923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "37f2cb32298e540ad1f6b25816f64e71c855f78bb8d46b020ebe163507591923", kill_on_drop: false }`
[INFO] [stdout] 37f2cb32298e540ad1f6b25816f64e71c855f78bb8d46b020ebe163507591923
[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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--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@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a72b5a1b5922e3b5dc3c3413971ec610ad7fec5405ded953ba31fea12147fbe3
[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" "a72b5a1b5922e3b5dc3c3413971ec610ad7fec5405ded953ba31fea12147fbe3", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.14
[INFO] [stderr]     Checking num-traits v0.1.34
[INFO] [stderr]     Checking regex-syntax v0.3.4
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking lazy_static v0.1.16
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking time v0.1.35
[INFO] [stderr]     Checking num-integer v0.1.32
[INFO] [stderr]     Checking thread_local v0.2.6
[INFO] [stderr]     Checking aho-corasick v0.5.2
[INFO] [stderr]     Checking num-iter v0.1.32
[INFO] [stderr]     Checking num v0.1.34
[INFO] [stderr]     Checking chrono v0.2.25
[INFO] [stderr]     Checking regex v0.1.73
[INFO] [stderr]     Checking ftp v2.0.0
[INFO] [stderr]  Documenting ftpdown v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/config.rs:135:9
[INFO] [stdout]     |
[INFO] [stdout] 135 |         (s)
[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:260:17
[INFO] [stdout]     |
[INFO] [stdout] 260 |                 (loc.ends_with('/'))
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/main.rs:265:21
[INFO] [stdout]     |
[INFO] [stdout] 265 |                     (full_loc.clone())
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/main.rs:276:17
[INFO] [stdout]     |
[INFO] [stdout] 276 |                 (loc)
[INFO] [stdout]     |                 ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/main.rs:296:21
[INFO] [stdout]     |
[INFO] [stdout] 296 |                     (name)
[INFO] [stdout]     |                     ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/main.rs:332:37
[INFO] [stdout]     |
[INFO] [stdout] 332 | / ...                   ((lsize.checked_mul(100).unwrap())
[INFO] [stdout] 333 | | ...                        .checked_div(rsize.unwrap())
[INFO] [stdout] 334 | | ...                        .unwrap()),
[INFO] [stdout]     | |_____________________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 332 |                                     (lsize.checked_mul(100).unwrap())
[INFO] [stdout] 333 |                                          .checked_div(rsize.unwrap())
[INFO] [stdout] 334 |                                          .unwrap(),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/main.rs:344:21
[INFO] [stdout]     |
[INFO] [stdout] 344 |                     (ftpstream)
[INFO] [stdout]     |                     ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/main.rs:349:17
[INFO] [stdout]     |
[INFO] [stdout] 349 |                 (ftpstream)
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/main.rs:354:17
[INFO] [stdout]     |
[INFO] [stdout] 354 |                 (ftpstream)
[INFO] [stdout]     |                 ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.78s
[INFO] running `Command { std: "docker" "inspect" "a72b5a1b5922e3b5dc3c3413971ec610ad7fec5405ded953ba31fea12147fbe3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a72b5a1b5922e3b5dc3c3413971ec610ad7fec5405ded953ba31fea12147fbe3", kill_on_drop: false }`
[INFO] [stdout] a72b5a1b5922e3b5dc3c3413971ec610ad7fec5405ded953ba31fea12147fbe3