[INFO] cloning repository https://github.com/keitaroskmt/matroid_bandits
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/keitaroskmt/matroid_bandits" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeitaroskmt%2Fmatroid_bandits", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeitaroskmt%2Fmatroid_bandits'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3edb682fdb60f8083c61b650e9ec34bbf7eab762
[INFO] testing keitaroskmt/matroid_bandits against 1.69.0 for beta-1.70-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeitaroskmt%2Fmatroid_bandits" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/keitaroskmt/matroid_bandits on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/keitaroskmt/matroid_bandits
[INFO] finished tweaking git repo https://github.com/keitaroskmt/matroid_bandits
[INFO] tweaked toml for git repo https://github.com/keitaroskmt/matroid_bandits written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/keitaroskmt/matroid_bandits 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" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3f31cc3e9418fa11bc8c5fb809ed81c74805bb364ce85263824865be0095a1b4
[INFO] running `Command { std: "docker" "start" "-a" "3f31cc3e9418fa11bc8c5fb809ed81c74805bb364ce85263824865be0095a1b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3f31cc3e9418fa11bc8c5fb809ed81c74805bb364ce85263824865be0095a1b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f31cc3e9418fa11bc8c5fb809ed81c74805bb364ce85263824865be0095a1b4", kill_on_drop: false }`
[INFO] [stdout] 3f31cc3e9418fa11bc8c5fb809ed81c74805bb364ce85263824865be0095a1b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2804d4d94abf57f1899365452c4ab91bfcede078527794c72ce61a7bf176e2e6
[INFO] running `Command { std: "docker" "start" "-a" "2804d4d94abf57f1899365452c4ab91bfcede078527794c72ce61a7bf176e2e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling libm v0.2.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling rand_distr v0.4.0
[INFO] [stderr]    Compiling matroid_bandits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Distribution`, `Normal`
[INFO] [stdout]  --> src/main.rs:5:18
[INFO] [stdout]   |
[INFO] [stdout] 5 | use rand_distr::{Normal, Distribution};
[INFO] [stdout]   |                  ^^^^^^  ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error_bound`
[INFO] [stdout]    --> src/solver.rs:169:56
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn exact_expgap(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_bound`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `kruskal` is never used
[INFO] [stdout]   --> src/graph.rs:78:8
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub fn kruskal(n: usize, es: &mut Vec<Edge>) -> f64 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `size` is never used
[INFO] [stdout]   --> src/graph.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn size(&mut self, x: usize) -> usize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `cost_diff` is never used
[INFO] [stdout]   --> src/solver.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 68 |     pub fn cost_diff(&self) -> Vec<f64> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]   --> src/main.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stdout]    |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/main.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]   --> src/solver.rs:95:38
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn uniform_sample(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) {
[INFO] [stdout]    |                                      ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:105:31
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn naive_i(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stdout]     |                               ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:141:39
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub fn pac_sampleprune(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stdout]     |                                       ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `F` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 |         let mut F = HashSet::new();
[INFO] [stdout]     |                 ^ help: convert the identifier to snake case (notice the capitalization): `f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `I` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let I = self.pac_sampleprune(&F, alpha, delta / 8.0);
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:169:36
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn exact_expgap(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stdout]     |                                    ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `I` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:192:21
[INFO] [stdout]     |
[INFO] [stdout] 192 |                 let I = self.pac_sampleprune(&s_cur, eps_r, delta_r);
[INFO] [stdout]     |                     ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `U` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:215:25
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 let mut U = HashSet::new();
[INFO] [stdout]     |                         ^ help: convert the identifier to snake case (notice the capitalization): `u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:267:29
[INFO] [stdout]     |
[INFO] [stdout] 267 |     pub fn clucb(&mut self, S: &HashSet<usize>, delta: f64) -> HashSet<usize> {
[INFO] [stdout]     |                             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.21s
[INFO] running `Command { std: "docker" "inspect" "2804d4d94abf57f1899365452c4ab91bfcede078527794c72ce61a7bf176e2e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2804d4d94abf57f1899365452c4ab91bfcede078527794c72ce61a7bf176e2e6", kill_on_drop: false }`
[INFO] [stdout] 2804d4d94abf57f1899365452c4ab91bfcede078527794c72ce61a7bf176e2e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94f28fab6504dc93896282b5e64ef1b475d044ac6a26b2066a7de835f29a9c08
[INFO] running `Command { std: "docker" "start" "-a" "94f28fab6504dc93896282b5e64ef1b475d044ac6a26b2066a7de835f29a9c08", kill_on_drop: false }`
[INFO] [stderr]    Compiling matroid_bandits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `error_bound`
[INFO] [stdout]    --> src/solver.rs:169:56
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn exact_expgap(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stdout]     |                                                        ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_bound`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:299:13
[INFO] [stdout]     |
[INFO] [stdout] 299 |         for i in 0..num {
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `size` is never used
[INFO] [stdout]   --> src/graph.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 51 |     pub fn size(&mut self, x: usize) -> usize {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]   --> src/main.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stdout]    |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/main.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]   --> src/solver.rs:95:38
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn uniform_sample(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) {
[INFO] [stdout]    |                                      ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:105:31
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub fn naive_i(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stdout]     |                               ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:141:39
[INFO] [stdout]     |
[INFO] [stdout] 141 |     pub fn pac_sampleprune(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stdout]     |                                       ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `F` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:149:17
[INFO] [stdout]     |
[INFO] [stdout] 149 |         let mut F = HashSet::new();
[INFO] [stdout]     |                 ^ help: convert the identifier to snake case (notice the capitalization): `f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `I` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:158:13
[INFO] [stdout]     |
[INFO] [stdout] 158 |         let I = self.pac_sampleprune(&F, alpha, delta / 8.0);
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:169:36
[INFO] [stdout]     |
[INFO] [stdout] 169 |     pub fn exact_expgap(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stdout]     |                                    ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `I` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:192:21
[INFO] [stdout]     |
[INFO] [stdout] 192 |                 let I = self.pac_sampleprune(&s_cur, eps_r, delta_r);
[INFO] [stdout]     |                     ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `U` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:215:25
[INFO] [stdout]     |
[INFO] [stdout] 215 |                 let mut U = HashSet::new();
[INFO] [stdout]     |                         ^ help: convert the identifier to snake case (notice the capitalization): `u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/solver.rs:267:29
[INFO] [stdout]     |
[INFO] [stdout] 267 |     pub fn clucb(&mut self, S: &HashSet<usize>, delta: f64) -> HashSet<usize> {
[INFO] [stdout]     |                             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `F` should have a snake case name
[INFO] [stdout]    --> src/main.rs:218:17
[INFO] [stdout]     |
[INFO] [stdout] 218 |         let mut F = Vec::new();
[INFO] [stdout]     |                 ^ help: convert the identifier to snake case (notice the capitalization): `f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/main.rs:291:13
[INFO] [stdout]     |
[INFO] [stdout] 291 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/main.rs:349:13
[INFO] [stdout]     |
[INFO] [stdout] 349 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/main.rs:403:13
[INFO] [stdout]     |
[INFO] [stdout] 403 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]    --> src/main.rs:453:13
[INFO] [stdout]     |
[INFO] [stdout] 453 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stdout]     |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "94f28fab6504dc93896282b5e64ef1b475d044ac6a26b2066a7de835f29a9c08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94f28fab6504dc93896282b5e64ef1b475d044ac6a26b2066a7de835f29a9c08", kill_on_drop: false }`
[INFO] [stdout] 94f28fab6504dc93896282b5e64ef1b475d044ac6a26b2066a7de835f29a9c08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4f8f289e93cce6d0db7414548f643baeb01506783ee9a9df7f38773228223aba
[INFO] running `Command { std: "docker" "start" "-a" "4f8f289e93cce6d0db7414548f643baeb01506783ee9a9df7f38773228223aba", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `error_bound`
[INFO] [stderr]    --> src/solver.rs:169:56
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn exact_expgap(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stderr]     |                                                        ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_bound`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/main.rs:299:13
[INFO] [stderr]     |
[INFO] [stderr] 299 |         for i in 0..num {
[INFO] [stderr]     |             ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: method `size` is never used
[INFO] [stderr]   --> src/graph.rs:51:12
[INFO] [stderr]    |
[INFO] [stderr] 51 |     pub fn size(&mut self, x: usize) -> usize {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `S` should have a snake case name
[INFO] [stderr]   --> src/main.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stderr]    |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `S` should have a snake case name
[INFO] [stderr]    --> src/main.rs:114:13
[INFO] [stderr]     |
[INFO] [stderr] 114 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stderr]     |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `S` should have a snake case name
[INFO] [stderr]   --> src/solver.rs:95:38
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn uniform_sample(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) {
[INFO] [stderr]    |                                      ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `S` should have a snake case name
[INFO] [stderr]    --> src/solver.rs:105:31
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub fn naive_i(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stderr]     |                               ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `S` should have a snake case name
[INFO] [stderr]    --> src/solver.rs:141:39
[INFO] [stderr]     |
[INFO] [stderr] 141 |     pub fn pac_sampleprune(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stderr]     |                                       ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `F` should have a snake case name
[INFO] [stderr]    --> src/solver.rs:149:17
[INFO] [stderr]     |
[INFO] [stderr] 149 |         let mut F = HashSet::new();
[INFO] [stderr]     |                 ^ help: convert the identifier to snake case (notice the capitalization): `f`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `I` should have a snake case name
[INFO] [stderr]    --> src/solver.rs:158:13
[INFO] [stderr]     |
[INFO] [stderr] 158 |         let I = self.pac_sampleprune(&F, alpha, delta / 8.0);
[INFO] [stderr]     |             ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `S` should have a snake case name
[INFO] [stderr]    --> src/solver.rs:169:36
[INFO] [stderr]     |
[INFO] [stderr] 169 |     pub fn exact_expgap(&mut self, S: &HashSet<usize>, error_bound: f64, delta: f64) -> HashSet<usize> {
[INFO] [stderr]     |                                    ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `I` should have a snake case name
[INFO] [stderr]    --> src/solver.rs:192:21
[INFO] [stderr]     |
[INFO] [stderr] 192 |                 let I = self.pac_sampleprune(&s_cur, eps_r, delta_r);
[INFO] [stderr]     |                     ^ help: convert the identifier to snake case (notice the capitalization): `i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `U` should have a snake case name
[INFO] [stderr]    --> src/solver.rs:215:25
[INFO] [stderr]     |
[INFO] [stderr] 215 |                 let mut U = HashSet::new();
[INFO] [stderr]     |                         ^ help: convert the identifier to snake case (notice the capitalization): `u`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `S` should have a snake case name
[INFO] [stderr]    --> src/solver.rs:267:29
[INFO] [stderr]     |
[INFO] [stderr] 267 |     pub fn clucb(&mut self, S: &HashSet<usize>, delta: f64) -> HashSet<usize> {
[INFO] [stderr]     |                             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `F` should have a snake case name
[INFO] [stderr]    --> src/main.rs:218:17
[INFO] [stderr]     |
[INFO] [stderr] 218 |         let mut F = Vec::new();
[INFO] [stderr]     |                 ^ help: convert the identifier to snake case (notice the capitalization): `f`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `S` should have a snake case name
[INFO] [stderr]    --> src/main.rs:291:13
[INFO] [stderr]     |
[INFO] [stderr] 291 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stderr]     |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `S` should have a snake case name
[INFO] [stderr]    --> src/main.rs:349:13
[INFO] [stderr]     |
[INFO] [stderr] 349 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stderr]     |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `S` should have a snake case name
[INFO] [stderr]    --> src/main.rs:403:13
[INFO] [stderr]     |
[INFO] [stderr] 403 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stderr]     |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `S` should have a snake case name
[INFO] [stderr]    --> src/main.rs:453:13
[INFO] [stderr]     |
[INFO] [stderr] 453 |         let S = (0..size).collect::<HashSet<usize>>();
[INFO] [stderr]     |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stderr] 
[INFO] [stderr] warning: `matroid_bandits` (bin "matroid_bandits" test) generated 19 warnings (run `cargo fix --bin "matroid_bandits" --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/matroid_bandits-fb5b7a8fe3a68d5f)
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test tests::es_sort ... ok
[INFO] [stdout] test tests::normal ... ok
[INFO] [stdout] test tests::test_rank ... ok
[INFO] [stdout] test tests::test_struct ... ok
[INFO] [stdout] test tests::test_sample ... ok
[INFO] [stdout] test tests::test_kruskal ... FAILED
[INFO] [stdout] test tests::test_clucb ... ok
[INFO] [stdout] test tests::test_pac_sampleprune ... ok
[INFO] [stdout] test tests::test_sample_i ... ok
[INFO] [stdout] test tests::test_exact_expgap ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- tests::test_kruskal stdout ----
[INFO] [stdout] thread 'tests::test_kruskal' panicked at 'assertion failed: `(left == right)`
[INFO] [stdout]   left: `15.0`,
[INFO] [stdout]  right: `6.0`', src/main.rs:203:9
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5573c1bb51fa - std::backtrace_rs::backtrace::libunwind::trace::ha9053a9a07ca49cb
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stdout]    1:     0x5573c1bb51fa - std::backtrace_rs::backtrace::trace_unsynchronized::h9c2852a457ad564e
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x5573c1bb51fa - std::sys_common::backtrace::_print_fmt::h457936fbfaa0070f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stdout]    3:     0x5573c1bb51fa - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h5779d7bf7f70cb0c
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x5573c1bd8d6e - core::fmt::write::h5a4baaff1bcd3eb5
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/fmt/mod.rs:1232:17
[INFO] [stdout]    5:     0x5573c1bb2675 - std::io::Write::write_fmt::h478f79c628ef31d1
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/io/mod.rs:1684:15
[INFO] [stdout]    6:     0x5573c1bb4fc5 - std::sys_common::backtrace::_print::h5fcdc36060f177e8
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    7:     0x5573c1bb4fc5 - std::sys_common::backtrace::print::h54ca9458b876c8bf
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    8:     0x5573c1bb6d8f - std::panicking::default_hook::{{closure}}::hbe471161c7664ed6
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:271:22
[INFO] [stdout]    9:     0x5573c1bb6a4f - std::panicking::default_hook::ha3500da57aa4ac4f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:287:9
[INFO] [stdout]   10:     0x5573c1b4e6c7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hdf1b89dd137ece34
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:2001:9
[INFO] [stdout]   11:     0x5573c1b4e6c7 - test::test_main::{{closure}}::h9081a79f20e75698
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:135:21
[INFO] [stdout]   12:     0x5573c1bb74bd - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6507bddc3eebb4a5
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:2001:9
[INFO] [stdout]   13:     0x5573c1bb74bd - std::panicking::rust_panic_with_hook::h50c09d000dc561d2
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:696:13
[INFO] [stdout]   14:     0x5573c1bb7239 - std::panicking::begin_panic_handler::{{closure}}::h9e2b2176e00e0d9c
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:583:13
[INFO] [stdout]   15:     0x5573c1bb5666 - std::sys_common::backtrace::__rust_end_short_backtrace::h5739b8e512c09d02
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:150:18
[INFO] [stdout]   16:     0x5573c1bb6f42 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:579:5
[INFO] [stdout]   17:     0x5573c1ae7fc3 - core::panicking::panic_fmt::hf33a1475b4dc5c3e
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/panicking.rs:64:14
[INFO] [stdout]   18:     0x5573c1ae829f - core::panicking::assert_failed_inner::haf9816227b20b6f2
[INFO] [stdout]   19:     0x5573c1b1c2ca - core::panicking::assert_failed::h5e5d593fd3498f06
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/panicking.rs:211:5
[INFO] [stdout]   20:     0x5573c1afb738 - matroid_bandits::tests::test_kruskal::hfbd373f87a005d73
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:203:9
[INFO] [stdout]   21:     0x5573c1afb327 - matroid_bandits::tests::test_kruskal::{{closure}}::hfa2632a7ccd48307
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:185:23
[INFO] [stdout]   22:     0x5573c1b06e85 - core::ops::function::FnOnce::call_once::h8145b69979e6cd28
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5573c1b53aaf - core::ops::function::FnOnce::call_once::h7d969581be7d0075
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5573c1b53aaf - test::__rust_begin_short_backtrace::hca25a52684e56655
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:656:18
[INFO] [stdout]   25:     0x5573c1b250cc - test::run_test::{{closure}}::ha8ac744c4af1a4bb
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:647:30
[INFO] [stdout]   26:     0x5573c1b250cc - core::ops::function::FnOnce::call_once{{vtable.shim}}::h7b411a9ed45bdecf
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   27:     0x5573c1b52a76 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd05328869a8ed200
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   28:     0x5573c1b52a76 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0c601ce20bd5b2be
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   29:     0x5573c1b52a76 - std::panicking::try::do_call::ha4be5c164fe30854
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:487:40
[INFO] [stdout]   30:     0x5573c1b52a76 - std::panicking::try::h604546f3609af05f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:451:19
[INFO] [stdout]   31:     0x5573c1b52a76 - std::panic::catch_unwind::h5bfa8afe44c9c2f9
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panic.rs:140:14
[INFO] [stdout]   32:     0x5573c1b52a76 - test::run_test_in_process::hd50dee55dd63e6aa
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:679:27
[INFO] [stdout]   33:     0x5573c1b52a76 - test::run_test::run_test_inner::{{closure}}::h4aa0f433aa85cea8
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:573:39
[INFO] [stdout]   34:     0x5573c1b1f741 - test::run_test::run_test_inner::{{closure}}::had56431adf24b4d6
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/test/src/lib.rs:600:37
[INFO] [stdout]   35:     0x5573c1b1f741 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha8d9890e0c73bf13
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys_common/backtrace.rs:134:18
[INFO] [stdout]   36:     0x5573c1b2515b - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h251832bcb4a95327
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/thread/mod.rs:560:17
[INFO] [stdout]   37:     0x5573c1b2515b - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h8fdff598fa414831
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/panic/unwind_safe.rs:271:9
[INFO] [stdout]   38:     0x5573c1b2515b - std::panicking::try::do_call::h455dd2f7764a950f
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:487:40
[INFO] [stdout]   39:     0x5573c1b2515b - std::panicking::try::had6f23b7b73ae72a
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panicking.rs:451:19
[INFO] [stdout]   40:     0x5573c1b2515b - std::panic::catch_unwind::ha6a5ca3915b4dad0
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/panic.rs:140:14
[INFO] [stdout]   41:     0x5573c1b2515b - std::thread::Builder::spawn_unchecked_::{{closure}}::h883b72ef75da6231
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/thread/mod.rs:559:30
[INFO] [stdout]   42:     0x5573c1b2515b - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb7dff73dc8bd2ccb
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   43:     0x5573c1bbb823 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h39990b24eedef2ab
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   44:     0x5573c1bbb823 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h01a027258444143b
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/alloc/src/boxed.rs:1987:9
[INFO] [stdout]   45:     0x5573c1bbb823 - std::sys::unix::thread::Thread::new::thread_start::ha4f1cdd9c25884ba
[INFO] [stdout]                                at /rustc/84c898d65adf2f39a5a98507f1fe0ce10a2b8dbc/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   46:     0x7fa17bc38b43 - <unknown>
[INFO] [stdout]   47:     0x7fa17bcc9bb4 - __clone
[INFO] [stdout]   48:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     tests::test_kruskal
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 9 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.27s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin matroid_bandits`
[INFO] running `Command { std: "docker" "inspect" "4f8f289e93cce6d0db7414548f643baeb01506783ee9a9df7f38773228223aba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f8f289e93cce6d0db7414548f643baeb01506783ee9a9df7f38773228223aba", kill_on_drop: false }`
[INFO] [stdout] 4f8f289e93cce6d0db7414548f643baeb01506783ee9a9df7f38773228223aba
