[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 1.76.0 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkeitaroskmt%2Fmatroid_bandits" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/keitaroskmt/matroid_bandits on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "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-5-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" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand_distr v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f16a952901f3a2e21fad838706d987977bad141f048cd7f2c254708fd3e0b32c
[INFO] running `Command { std: "docker" "start" "-a" "f16a952901f3a2e21fad838706d987977bad141f048cd7f2c254708fd3e0b32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f16a952901f3a2e21fad838706d987977bad141f048cd7f2c254708fd3e0b32c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f16a952901f3a2e21fad838706d987977bad141f048cd7f2c254708fd3e0b32c", kill_on_drop: false }`
[INFO] [stdout] f16a952901f3a2e21fad838706d987977bad141f048cd7f2c254708fd3e0b32c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a153248fad639be28a7da365740800bd59a86a9402d280110119f81afd78f64a
[INFO] running `Command { std: "docker" "start" "-a" "a153248fad639be28a7da365740800bd59a86a9402d280110119f81afd78f64a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling getrandom v0.2.2
[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: method `size` is never used
[INFO] [stdout]   --> src/graph.rs:51:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl UnionFind {
[INFO] [stdout]    | -------------- method in this implementation
[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: 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] 
[INFO] [stdout] warning: method `cost_diff` is never used
[INFO] [stdout]   --> src/solver.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | impl Solver {
[INFO] [stdout]    | ----------- method in this implementation
[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 1.73s
[INFO] running `Command { std: "docker" "inspect" "a153248fad639be28a7da365740800bd59a86a9402d280110119f81afd78f64a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a153248fad639be28a7da365740800bd59a86a9402d280110119f81afd78f64a", kill_on_drop: false }`
[INFO] [stdout] a153248fad639be28a7da365740800bd59a86a9402d280110119f81afd78f64a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d01ee57f978ef7b1ceba98f4927e03ad422872f018cea5a06a4bec273c74b8f
[INFO] running `Command { std: "docker" "start" "-a" "4d01ee57f978ef7b1ceba98f4927e03ad422872f018cea5a06a4bec273c74b8f", 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] 10 | impl UnionFind {
[INFO] [stdout]    | -------------- method in this implementation
[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 0.48s
[INFO] running `Command { std: "docker" "inspect" "4d01ee57f978ef7b1ceba98f4927e03ad422872f018cea5a06a4bec273c74b8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d01ee57f978ef7b1ceba98f4927e03ad422872f018cea5a06a4bec273c74b8f", kill_on_drop: false }`
[INFO] [stdout] 4d01ee57f978ef7b1ceba98f4927e03ad422872f018cea5a06a4bec273c74b8f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b282fd732d888f3d6b5d7b6ed90a370a676f08fb279d0308e58ae0115c71382a
[INFO] running `Command { std: "docker" "start" "-a" "b282fd732d888f3d6b5d7b6ed90a370a676f08fb279d0308e58ae0115c71382a", 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] 10 | impl UnionFind {
[INFO] [stderr]    | -------------- method in this implementation
[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-a7177885feb8e798)
[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 src/main.rs:203:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: 15.0
[INFO] [stdout]  right: 6.0
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x562858176546 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x562858176546 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x562858176546 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x562858176546 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x56285819f7e0 - core::fmt::rt::Argument::fmt::h76c38a80d925a410
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x56285819f7e0 - core::fmt::write::h3ed6aeaa977c8e45
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x562858173faf - std::io::Write::write_fmt::h1299aa7741865f2b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x562858176324 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x562858176324 - std::sys_common::backtrace::print::h85035a511aafe7a8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x562858178097 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25
[INFO] [stdout]   10:     0x562858177d7d - std::panicking::default_hook::hf5fcb0f213fe709a
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x56285810cfa7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h60265c2dfa87ee34
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x56285810cfa7 - test::test_main::{{closure}}::h77865bd3127078c6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x5628581786b6 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbc5ccf4eb663e1e5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x5628581786b6 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x562858178402 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x562858176a46 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x562858178160 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x5628580a2135 - core::panicking::panic_fmt::h784f20a50eaab275
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x5628580a256b - core::panicking::assert_failed_inner::hbf94b40c37b92af0
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:342:17
[INFO] [stdout]   20:     0x5628580caade - core::panicking::assert_failed::heb95afe0f7d0f0f3
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:297:5
[INFO] [stdout]   21:     0x5628580bea0f - matroid_bandits::tests::test_kruskal::h1d6fa8203f6bb8d1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:203:9
[INFO] [stdout]   22:     0x5628580be617 - matroid_bandits::tests::test_kruskal::{{closure}}::h3518e7e7e3b1a35a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/main.rs:185:22
[INFO] [stdout]   23:     0x5628580c5d26 - core::ops::function::FnOnce::call_once::hb02df0b5d1bf50a6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x56285811287f - core::ops::function::FnOnce::call_once::h8dc6907944022cf6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x56285811287f - test::__rust_begin_short_backtrace::haae1a87433f1efb3
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:627:18
[INFO] [stdout]   26:     0x562858111601 - test::run_test_in_process::{{closure}}::h8c7decfa7c14e152
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:60
[INFO] [stdout]   27:     0x562858111601 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h19e6ff056d9d21e9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x562858111601 - std::panicking::try::do_call::h89c848fcaa37c035
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x562858111601 - std::panicking::try::h57ab3dc74e2839b8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x562858111601 - std::panic::catch_unwind::hfb6a1b1abc120fb9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x562858111601 - test::run_test_in_process::h5ae2f9875edd562d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:27
[INFO] [stdout]   32:     0x562858111601 - test::run_test::{{closure}}::h35d7300d8928a067
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:573:43
[INFO] [stdout]   33:     0x5628580d8936 - test::run_test::{{closure}}::h7525ced405d23d1b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:601:41
[INFO] [stdout]   34:     0x5628580d8936 - std::sys_common::backtrace::__rust_begin_short_backtrace::h4e7db78ce05afad8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x5628580dd997 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hcfbcb64f1a1b3482
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x5628580dd997 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9d89c5c4108bd689
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x5628580dd997 - std::panicking::try::do_call::h8a4869bc94ec50c9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   38:     0x5628580dd997 - std::panicking::try::h9a576f20ff81ac30
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   39:     0x5628580dd997 - std::panic::catch_unwind::hbcb4e3f860ef9830
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x5628580dd997 - std::thread::Builder::spawn_unchecked_::{{closure}}::h93c79a6be1505948
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x5628580dd997 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h426d96740c81bdaf
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x56285817d165 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h12de4fc57affb195
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   43:     0x56285817d165 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3c619f45059d5cf1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x56285817d165 - std::sys::unix::thread::Thread::new::thread_start::hbac657605e4b7389
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7faa6207bac3 - <unknown>
[INFO] [stdout]   46:     0x7faa6210cbf4 - __clone
[INFO] [stdout]   47:                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 6.67s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin matroid_bandits`
[INFO] running `Command { std: "docker" "inspect" "b282fd732d888f3d6b5d7b6ed90a370a676f08fb279d0308e58ae0115c71382a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b282fd732d888f3d6b5d7b6ed90a370a676f08fb279d0308e58ae0115c71382a", kill_on_drop: false }`
[INFO] [stdout] b282fd732d888f3d6b5d7b6ed90a370a676f08fb279d0308e58ae0115c71382a
