[INFO] cloning repository https://github.com/ZekeWK/DSU
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ZekeWK/DSU" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZekeWK%2FDSU", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZekeWK%2FDSU'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e225492a474bf00ce6bf379128f5be933089002
[INFO] testing ZekeWK/DSU against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FZekeWK%2FDSU" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ZekeWK/DSU on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ZekeWK/DSU
[INFO] finished tweaking git repo https://github.com/ZekeWK/DSU
[INFO] tweaked toml for git repo https://github.com/ZekeWK/DSU written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/ZekeWK/DSU already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a167eb91ee14e74323dab84276a5e7bc9b9860726327de19f9612f645df297e1
[INFO] running `Command { std: "docker" "start" "-a" "a167eb91ee14e74323dab84276a5e7bc9b9860726327de19f9612f645df297e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a167eb91ee14e74323dab84276a5e7bc9b9860726327de19f9612f645df297e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a167eb91ee14e74323dab84276a5e7bc9b9860726327de19f9612f645df297e1", kill_on_drop: false }`
[INFO] [stdout] a167eb91ee14e74323dab84276a5e7bc9b9860726327de19f9612f645df297e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4ace5eb6e5038af9988371ce9495e4019dd6edff7f76fb097ad8c049f68c5a85
[INFO] running `Command { std: "docker" "start" "-a" "4ace5eb6e5038af9988371ce9495e4019dd6edff7f76fb097ad8c049f68c5a85", kill_on_drop: false }`
[INFO] [stderr]    Compiling dsu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/lib.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parents`
[INFO] [stdout]  --> src/dsu.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     parents : Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/dsu.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stdout]   |          ^^^^^           ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]  --> src/dsu.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     data : Vec<T>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/dsu.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stdout]   |          ^^^^^           ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `union_func`
[INFO] [stdout]  --> src/dsu.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     union_func : F,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/dsu.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stdout]   |          ^^^^^           ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size`
[INFO] [stdout]  --> src/dsu.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     size : Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/dsu.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stdout]   |          ^^^^^           ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/dsu.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(union_func : F) -> DSU<T, F> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_capacity`
[INFO] [stdout]   --> src/dsu.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn with_capacity(union_func : F, capacity : usize,) -> DSU<T, F> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/dsu.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/dsu.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn push(&mut self, data : T) -> usize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_parent`
[INFO] [stdout]   --> src/dsu.rs:30:19
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub(crate) fn set_parent(&mut self, node : usize, parent : usize) {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_parent`
[INFO] [stdout]   --> src/dsu.rs:35:19
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub(crate) fn get_parent(&self, node : usize) -> usize {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_data`
[INFO] [stdout]   --> src/dsu.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub(crate) fn set_data(&mut self, node : usize, data : T) {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_data_mut`
[INFO] [stdout]   --> src/dsu.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn get_data_mut(&mut self, node : usize) -> &mut T {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_data`
[INFO] [stdout]   --> src/dsu.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub(crate) fn get_data(&self, node : usize) -> &T {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `take_data`
[INFO] [stdout]   --> src/dsu.rs:55:19
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub(crate) fn take_data(&mut self, node : usize) -> T {
[INFO] [stdout]    |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_size`
[INFO] [stdout]   --> src/dsu.rs:60:19
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub(crate) fn get_size(&self, node : usize) -> usize {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_size`
[INFO] [stdout]   --> src/dsu.rs:65:19
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub(crate) fn set_size(&mut self, node : usize, size : usize) {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top`
[INFO] [stdout]   --> src/dsu.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn top(&self, node : usize) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top_mut`
[INFO] [stdout]   --> src/dsu.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn top_mut(&mut self, node : usize) -> usize {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top_data`
[INFO] [stdout]   --> src/dsu.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn top_data(&self, node : usize) -> &T {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top_data_mut`
[INFO] [stdout]   --> src/dsu.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn top_data_mut(&mut self, node : usize) -> &mut T{
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `union`
[INFO] [stdout]   --> src/dsu.rs:92:12
[INFO] [stdout]    |
[INFO] [stdout] 92 |     pub fn union(&mut self, node0 : usize, node1 : usize) { 
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "4ace5eb6e5038af9988371ce9495e4019dd6edff7f76fb097ad8c049f68c5a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ace5eb6e5038af9988371ce9495e4019dd6edff7f76fb097ad8c049f68c5a85", kill_on_drop: false }`
[INFO] [stdout] 4ace5eb6e5038af9988371ce9495e4019dd6edff7f76fb097ad8c049f68c5a85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b546ae31d419b79fb03e414cfb1b04e364534ea0a2a4434920730ad82bdbc4a4
[INFO] running `Command { std: "docker" "start" "-a" "b546ae31d419b79fb03e414cfb1b04e364534ea0a2a4434920730ad82bdbc4a4", kill_on_drop: false }`
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]  --> src/lib.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `parents`
[INFO] [stdout]  --> src/dsu.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     parents : Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/dsu.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stdout]   |          ^^^^^           ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `data`
[INFO] [stdout]  --> src/dsu.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     data : Vec<T>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/dsu.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stdout]   |          ^^^^^           ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `union_func`
[INFO] [stdout]  --> src/dsu.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     union_func : F,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/dsu.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stdout]   |          ^^^^^           ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size`
[INFO] [stdout]  --> src/dsu.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     size : Vec<usize>,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/dsu.rs:1:10
[INFO] [stdout]   |
[INFO] [stdout] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stdout]   |          ^^^^^           ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/dsu.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn new(union_func : F) -> DSU<T, F> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_capacity`
[INFO] [stdout]   --> src/dsu.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn with_capacity(union_func : F, capacity : usize,) -> DSU<T, F> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/dsu.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/dsu.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn push(&mut self, data : T) -> usize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_parent`
[INFO] [stdout]   --> src/dsu.rs:30:19
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub(crate) fn set_parent(&mut self, node : usize, parent : usize) {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_parent`
[INFO] [stdout]   --> src/dsu.rs:35:19
[INFO] [stdout]    |
[INFO] [stdout] 35 |     pub(crate) fn get_parent(&self, node : usize) -> usize {
[INFO] [stdout]    |                   ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_data`
[INFO] [stdout]   --> src/dsu.rs:40:19
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub(crate) fn set_data(&mut self, node : usize, data : T) {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_data_mut`
[INFO] [stdout]   --> src/dsu.rs:45:12
[INFO] [stdout]    |
[INFO] [stdout] 45 |     pub fn get_data_mut(&mut self, node : usize) -> &mut T {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_data`
[INFO] [stdout]   --> src/dsu.rs:50:19
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub(crate) fn get_data(&self, node : usize) -> &T {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `take_data`
[INFO] [stdout]   --> src/dsu.rs:55:19
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub(crate) fn take_data(&mut self, node : usize) -> T {
[INFO] [stdout]    |                   ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_size`
[INFO] [stdout]   --> src/dsu.rs:60:19
[INFO] [stdout]    |
[INFO] [stdout] 60 |     pub(crate) fn get_size(&self, node : usize) -> usize {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_size`
[INFO] [stdout]   --> src/dsu.rs:65:19
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub(crate) fn set_size(&mut self, node : usize, size : usize) {
[INFO] [stdout]    |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top`
[INFO] [stdout]   --> src/dsu.rs:70:12
[INFO] [stdout]    |
[INFO] [stdout] 70 |     pub fn top(&self, node : usize) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top_mut`
[INFO] [stdout]   --> src/dsu.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn top_mut(&mut self, node : usize) -> usize {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling dsu v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `top_data`
[INFO] [stdout]   --> src/dsu.rs:83:12
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub fn top_data(&self, node : usize) -> &T {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top_data_mut`
[INFO] [stdout]   --> src/dsu.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn top_data_mut(&mut self, node : usize) -> &mut T{
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `union`
[INFO] [stdout]   --> src/dsu.rs:92:12
[INFO] [stdout]    |
[INFO] [stdout] 92 |     pub fn union(&mut self, node0 : usize, node1 : usize) { 
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `with_capacity`
[INFO] [stdout]   --> src/dsu.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn with_capacity(union_func : F, capacity : usize,) -> DSU<T, F> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `top_data_mut`
[INFO] [stdout]   --> src/dsu.rs:87:12
[INFO] [stdout]    |
[INFO] [stdout] 87 |     pub fn top_data_mut(&mut self, node : usize) -> &mut T{
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.38s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/dsu-c870c1ef214ae943)
[INFO] running `Command { std: "docker" "inspect" "b546ae31d419b79fb03e414cfb1b04e364534ea0a2a4434920730ad82bdbc4a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b546ae31d419b79fb03e414cfb1b04e364534ea0a2a4434920730ad82bdbc4a4", kill_on_drop: false }`
[INFO] [stdout] b546ae31d419b79fb03e414cfb1b04e364534ea0a2a4434920730ad82bdbc4a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 22e82c08dbd8b530f4597cd864c11c8b13683d81c545e631a6dd9f3ad389b7fb
[INFO] running `Command { std: "docker" "start" "-a" "22e82c08dbd8b530f4597cd864c11c8b13683d81c545e631a6dd9f3ad389b7fb", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]  --> src/lib.rs:3:4
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn main() {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `parents`
[INFO] [stderr]  --> src/dsu.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     parents : Vec<usize>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/dsu.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stderr]   |          ^^^^^           ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `data`
[INFO] [stderr]  --> src/dsu.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     data : Vec<T>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/dsu.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stderr]   |          ^^^^^           ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `union_func`
[INFO] [stderr]  --> src/dsu.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     union_func : F,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/dsu.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stderr]   |          ^^^^^           ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `size`
[INFO] [stderr]  --> src/dsu.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     size : Vec<usize>,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `DSU` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]  --> src/dsu.rs:1:10
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[derive(Debug, Default, Clone)]
[INFO] [stderr]   |          ^^^^^           ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Debug` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new`
[INFO] [stderr]   --> src/dsu.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn new(union_func : F) -> DSU<T, F> {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `with_capacity`
[INFO] [stderr]   --> src/dsu.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn with_capacity(union_func : F, capacity : usize,) -> DSU<T, F> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `len`
[INFO] [stderr]   --> src/dsu.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn len(&self) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `push`
[INFO] [stderr]   --> src/dsu.rs:22:12
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn push(&mut self, data : T) -> usize {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_parent`
[INFO] [stderr]   --> src/dsu.rs:30:19
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub(crate) fn set_parent(&mut self, node : usize, parent : usize) {
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_parent`
[INFO] [stderr]   --> src/dsu.rs:35:19
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub(crate) fn get_parent(&self, node : usize) -> usize {
[INFO] [stderr]    |                   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_data`
[INFO] [stderr]   --> src/dsu.rs:40:19
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub(crate) fn set_data(&mut self, node : usize, data : T) {
[INFO] [stderr]    |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_data_mut`
[INFO] [stderr]   --> src/dsu.rs:45:12
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn get_data_mut(&mut self, node : usize) -> &mut T {
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_data`
[INFO] [stderr]   --> src/dsu.rs:50:19
[INFO] [stderr]    |
[INFO] [stderr] 50 |     pub(crate) fn get_data(&self, node : usize) -> &T {
[INFO] [stderr]    |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `take_data`
[INFO] [stderr]   --> src/dsu.rs:55:19
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub(crate) fn take_data(&mut self, node : usize) -> T {
[INFO] [stderr]    |                   ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `get_size`
[INFO] [stderr]   --> src/dsu.rs:60:19
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub(crate) fn get_size(&self, node : usize) -> usize {
[INFO] [stderr]    |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `set_size`
[INFO] [stderr]   --> src/dsu.rs:65:19
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub(crate) fn set_size(&mut self, node : usize, size : usize) {
[INFO] [stderr]    |                   ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `top`
[INFO] [stderr]   --> src/dsu.rs:70:12
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn top(&self, node : usize) -> usize {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `top_mut`
[INFO] [stderr]   --> src/dsu.rs:75:12
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn top_mut(&mut self, node : usize) -> usize {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `top_data`
[INFO] [stderr]   --> src/dsu.rs:83:12
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub fn top_data(&self, node : usize) -> &T {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `top_data_mut`
[INFO] [stderr]   --> src/dsu.rs:87:12
[INFO] [stderr]    |
[INFO] [stderr] 87 |     pub fn top_data_mut(&mut self, node : usize) -> &mut T{
[INFO] [stderr]    |            ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `union`
[INFO] [stderr]   --> src/dsu.rs:92:12
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn union(&mut self, node0 : usize, node1 : usize) { 
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `dsu` (lib) generated 22 warnings
[INFO] [stderr] warning: associated function is never used: `with_capacity`
[INFO] [stderr]   --> src/dsu.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn with_capacity(union_func : F, capacity : usize,) -> DSU<T, F> {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `dsu` (lib test) generated 2 warnings (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/dsu-c870c1ef214ae943)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::add ... ok
[INFO] [stderr]    Doc-tests dsu
[INFO] [stdout] test tests::max ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "22e82c08dbd8b530f4597cd864c11c8b13683d81c545e631a6dd9f3ad389b7fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22e82c08dbd8b530f4597cd864c11c8b13683d81c545e631a6dd9f3ad389b7fb", kill_on_drop: false }`
[INFO] [stdout] 22e82c08dbd8b530f4597cd864c11c8b13683d81c545e631a6dd9f3ad389b7fb