[INFO] cloning repository https://github.com/abhamra/microegg_rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/abhamra/microegg_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhamra%2Fmicroegg_rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhamra%2Fmicroegg_rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b1171b107fbd62109629ed8126bac974af870b07
[INFO] testing abhamra/microegg_rs against 1.99.0-beta.1+cargoflags=--release for beta-release-1.99-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabhamra%2Fmicroegg_rs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/abhamra/microegg_rs
[INFO] finished tweaking git repo https://github.com/abhamra/microegg_rs
[INFO] tweaked toml for git repo https://github.com/abhamra/microegg_rs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/abhamra/microegg_rs on toolchain 1.99.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/abhamra/microegg_rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a
[INFO] running `Command { std: "docker" "start" "772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "build" "--frozen" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling microegg_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:476:21
[INFO] [stdout]     |
[INFO] [stdout] 476 |                 for mut child_id in &node.children {
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `ID` is never used
[INFO] [stdout]   --> src/main.rs:18:6
[INFO] [stdout]    |
[INFO] [stdout] 18 | type ID = usize;
[INFO] [stdout]    |      ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/main.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `leaf` are never used
[INFO] [stdout]   --> src/main.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 29 | impl Node {
[INFO] [stdout]    | --------- associated functions in this implementation
[INFO] [stdout] 30 |     pub fn new(name: &'static str, children: Vec<ID>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 34 |     pub fn leaf(name: &'static str) -> Self {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `UnionFind` is never constructed
[INFO] [stdout]   --> src/main.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 | struct UnionFind {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `mkset`, `find`, and `union` are never used
[INFO] [stdout]    --> src/main.rs:62:12
[INFO] [stdout]     |
[INFO] [stdout]  61 | impl UnionFind {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout]  62 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  71 |     pub fn mkset(&mut self) -> ID {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  79 |     pub fn find(&mut self, id: ID) -> ID {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 106 |     pub fn union(&mut self, mut a: ID, mut b: ID) -> bool {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Pattern` is never used
[INFO] [stdout]    --> src/main.rs:129:6
[INFO] [stdout]     |
[INFO] [stdout] 129 | enum Pattern {
[INFO] [stdout]     |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Substitution` is never used
[INFO] [stdout]    --> src/main.rs:141:6
[INFO] [stdout]     |
[INFO] [stdout] 141 | type Substitution = HashMap<&'static str, ID>;
[INFO] [stdout]     |      ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Rewrite` is never used
[INFO] [stdout]    --> src/main.rs:145:6
[INFO] [stdout]     |
[INFO] [stdout] 145 | type Rewrite = (Pattern, Pattern);
[INFO] [stdout]     |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Match` is never used
[INFO] [stdout]    --> src/main.rs:149:6
[INFO] [stdout]     |
[INFO] [stdout] 149 | type Match<'a> = (&'a Pattern, ID, Substitution);
[INFO] [stdout]     |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Term` is never used
[INFO] [stdout]    --> src/main.rs:155:6
[INFO] [stdout]     |
[INFO] [stdout] 155 | enum Term {
[INFO] [stdout]     |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EGraph` is never constructed
[INFO] [stdout]    --> src/main.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 192 | struct EGraph {
[INFO] [stdout]     |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/main.rs:201:12
[INFO] [stdout]     |
[INFO] [stdout] 200 | impl EGraph {
[INFO] [stdout]     | ----------- associated items in this implementation
[INFO] [stdout] 201 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 209 |     pub fn add(&mut self, mut node: Node) -> ID {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 225 |     pub fn union(&mut self, a: ID, b: ID) -> bool {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 229 |     pub fn canonicalize_node(&mut self, n: Node) -> Node {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 242 |     pub fn rebuild(&mut self) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 270 |     pub fn instantiate(&mut self, pat: &Pattern, subst: &Substitution) -> ID {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 291 |     pub fn nodes_in_class(&self, root: ID) -> Vec<&Node> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 298 |     pub fn ematch(&mut self, pat: &Pattern, root: ID) -> Vec<Substitution> {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 314 |     pub fn ematch_rec(
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 376 |     pub fn rewrite(&mut self, rules: &[Rewrite]) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 400 |     pub fn saturate(&mut self, rules: &[Rewrite]) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 416 |     pub fn equiv(&mut self, a: ID, b: ID) -> bool {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 423 |     pub fn n_classes(&mut self) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 434 |     pub fn n_nodes(&self) -> usize {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 440 |     fn build_term(&mut self, class_id: ID, best: &HashMap<ID, (usize, Node)>) -> Term {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 458 |     pub fn extract(&mut self, root: ID, cost_fn: &impl Fn(&str, &[ID]) -> usize) -> (usize, Term) {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json" "--release", kill_on_drop: false }`
[INFO] [stderr]    Compiling microegg_rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:476:21
[INFO] [stdout]     |
[INFO] [stdout] 476 |                 for mut child_id in &node.children {
[INFO] [stdout]     |                     ----^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.1" "test" "--frozen" "--release", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:476:21
[INFO] [stderr]     |
[INFO] [stderr] 476 |                 for mut child_id in &node.children {
[INFO] [stderr]     |                     ----^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `microegg_rs` (bin "microegg_rs" test) generated 1 warning (run `cargo fix --bin "microegg_rs" -p microegg_rs --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `release` profile [optimized] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/release/deps/microegg_rs-a43ffcd7ba28f915)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::test_congruence_closure ... ok
[INFO] [stdout] test tests::test_extract_after_rewrite ... ok
[INFO] [stdout] test tests::test_extract_picks_smallest_form ... ok
[INFO] [stdout] test tests::test_instantiate ... ok
[INFO] [stdout] test tests::test_same_node_same_id ... ok
[INFO] [stdout] test tests::test_unionfind ... ok
[INFO] [stdout] test tests::test_saturate ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.06s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a", kill_on_drop: false }`
[INFO] [stdout] 772513acbde01ca5bef72f5f438a8e60051390c7b1304128bcb250e6df9d676a
