[INFO] updating cached repository https://github.com/samWighton/graph_network
[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] db735322de8b075644ee113dfc6c84c6a2c7ea3c
[INFO] documenting samWighton/graph_network against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FsamWighton%2Fgraph_network" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/samWighton/graph_network 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/samWighton/graph_network
[INFO] finished tweaking git repo https://github.com/samWighton/graph_network
[INFO] tweaked toml for git repo https://github.com/samWighton/graph_network written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/samWighton/graph_network 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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] f154d1fd15c9a4e05ea17b2d2300300932cc302eae1d8a7a46295cbbb632e657
[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" "f154d1fd15c9a4e05ea17b2d2300300932cc302eae1d8a7a46295cbbb632e657", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f154d1fd15c9a4e05ea17b2d2300300932cc302eae1d8a7a46295cbbb632e657", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f154d1fd15c9a4e05ea17b2d2300300932cc302eae1d8a7a46295cbbb632e657", kill_on_drop: false }`
[INFO] [stdout] f154d1fd15c9a4e05ea17b2d2300300932cc302eae1d8a7a46295cbbb632e657
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 2fcf9ffda3f03948e8f2e42eb4ee44c7929d9ebfd523c1cd676ce838a48bb04a
[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" "2fcf9ffda3f03948e8f2e42eb4ee44c7929d9ebfd523c1cd676ce838a48bb04a", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-serialize v0.3.23
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]  Documenting permissions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:213:94
[INFO] [stdout]     |
[INFO] [stdout] 213 | fn parse_received(table_names: &mut Vec<&str>, edges: &Vec<Edge>, buf: [u8;100]) ->  Option <(Vec<(Edge)>)> {
[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 type
[INFO] [stdout]    --> src/main.rs:213:99
[INFO] [stdout]     |
[INFO] [stdout] 213 | fn parse_received(table_names: &mut Vec<&str>, edges: &Vec<Edge>, buf: [u8;100]) ->  Option <(Vec<(Edge)>)> {
[INFO] [stdout]     |                                                                                                   ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:253:11
[INFO] [stdout]     |
[INFO] [stdout] 253 |     ) -> Vec<(Edge)> {
[INFO] [stdout]     |              ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/main.rs:306:24
[INFO] [stdout]     |
[INFO] [stdout] 306 |     let mut ret_val : Vec<(Edge)> = Vec::new();
[INFO] [stdout]     |                           ^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.85s
[INFO] running `Command { std: "docker" "inspect" "2fcf9ffda3f03948e8f2e42eb4ee44c7929d9ebfd523c1cd676ce838a48bb04a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fcf9ffda3f03948e8f2e42eb4ee44c7929d9ebfd523c1cd676ce838a48bb04a", kill_on_drop: false }`
[INFO] [stdout] 2fcf9ffda3f03948e8f2e42eb4ee44c7929d9ebfd523c1cd676ce838a48bb04a