[INFO] updating cached repository https://github.com/rotwatsb/code_kata
[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] 232189e70ed0dbb1665ab38aacc282a839c80a63
[INFO] documenting rotwatsb/code_kata against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frotwatsb%2Fcode_kata" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rotwatsb/code_kata 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/rotwatsb/code_kata
[INFO] finished tweaking git repo https://github.com/rotwatsb/code_kata
[INFO] tweaked toml for git repo https://github.com/rotwatsb/code_kata written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/rotwatsb/code_kata 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] [stderr] error: the lock file /workspace/builds/worker-9/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 1b65c4b50950d613acd5f602b3f449f6b29bf4cc04181fb1c9b7a3b1e531b313
[INFO] running `Command { std: "docker" "start" "-a" "1b65c4b50950d613acd5f602b3f449f6b29bf4cc04181fb1c9b7a3b1e531b313", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1b65c4b50950d613acd5f602b3f449f6b29bf4cc04181fb1c9b7a3b1e531b313", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b65c4b50950d613acd5f602b3f449f6b29bf4cc04181fb1c9b7a3b1e531b313", kill_on_drop: false }`
[INFO] [stdout] 1b65c4b50950d613acd5f602b3f449f6b29bf4cc04181fb1c9b7a3b1e531b313
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 2404ab7f5e71d0d0697772805aac94b7c99c0ee755401064dcfe49085c404ba2
[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" "2404ab7f5e71d0d0697772805aac94b7c99c0ee755401064dcfe49085c404ba2", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-iter v0.1.41
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]  Documenting code_kata v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/euler/longest_collatz_14.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 | /             (if n % 2 == 0 { 1 + cmp_collatz(n / 2, stored_vals) }
[INFO] [stdout] 30 | |              else { 1 + cmp_collatz(3 * n + 1, stored_vals) });
[INFO] [stdout]    | |______________________________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 29 |             if n % 2 == 0 { 1 + cmp_collatz(n / 2, stored_vals) }
[INFO] [stdout] 30 |              else { 1 + cmp_collatz(3 * n + 1, stored_vals) };
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/hackerrank/knapsack.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 | /         (if sizes[n] > c {
[INFO] [stdout] 29 | |             if n == 0 { return 0; }
[INFO] [stdout] 30 | |             max_knapsack(c, n - 1, sizes, values, memoized)
[INFO] [stdout] 31 | |          }
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |                       max_knapsack(c, n - 1, sizes, values, memoized))
[INFO] [stdout] 36 | |          });
[INFO] [stdout]    | |___________^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 28 |         if sizes[n] > c {
[INFO] [stdout] 29 |             if n == 0 { return 0; }
[INFO] [stdout] 30 |             max_knapsack(c, n - 1, sizes, values, memoized)
[INFO] [stdout] 31 |          }
[INFO] [stdout] 32 |          else {
[INFO] [stdout] 33 |              if n == 0 { return values[0]; }
[INFO] [stdout]  ...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/interviewbit/max_sum_path_in_binary_tree.rs:33:30
[INFO] [stdout]    |
[INFO] [stdout] 33 |     *max_sum = max(*max_sum, (sum_of_sums + vals[i]));
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.20s
[INFO] running `Command { std: "docker" "inspect" "2404ab7f5e71d0d0697772805aac94b7c99c0ee755401064dcfe49085c404ba2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2404ab7f5e71d0d0697772805aac94b7c99c0ee755401064dcfe49085c404ba2", kill_on_drop: false }`
[INFO] [stdout] 2404ab7f5e71d0d0697772805aac94b7c99c0ee755401064dcfe49085c404ba2