[INFO] cloning repository https://github.com/axel-kaliff/maxflow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/axel-kaliff/maxflow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faxel-kaliff%2Fmaxflow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faxel-kaliff%2Fmaxflow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7e7f9dfa70bf0ac4ca5dada1dfb9f322d2d86e4
[INFO] testing axel-kaliff/maxflow against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faxel-kaliff%2Fmaxflow" "/workspace/builds/worker-77/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-77/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/axel-kaliff/maxflow on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/axel-kaliff/maxflow
[INFO] finished tweaking git repo https://github.com/axel-kaliff/maxflow
[INFO] tweaked toml for git repo https://github.com/axel-kaliff/maxflow written to /workspace/builds/worker-77/source/Cargo.toml
[INFO] crate git repo https://github.com/axel-kaliff/maxflow already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc1355ac2efcd6b731f782a620042f672931554cdd610320105c77518ae88eb7
[INFO] running `Command { std: "docker" "start" "-a" "cc1355ac2efcd6b731f782a620042f672931554cdd610320105c77518ae88eb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc1355ac2efcd6b731f782a620042f672931554cdd610320105c77518ae88eb7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc1355ac2efcd6b731f782a620042f672931554cdd610320105c77518ae88eb7", kill_on_drop: false }`
[INFO] [stdout] cc1355ac2efcd6b731f782a620042f672931554cdd610320105c77518ae88eb7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c61a16b0cd9ee4529b7b65edec7fef2224cce6853296c4ad8cfab36c1f4815a
[INFO] running `Command { std: "docker" "start" "-a" "0c61a16b0cd9ee4529b7b65edec7fef2224cce6853296c4ad8cfab36c1f4815a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling maxflow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::LinkedList`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ford_fulkerson`
[INFO] [stdout]  --> src/main.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn ford_fulkerson(graph: Vec<Vec<usize>>, V: usize, s: usize, t: usize) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bfs`
[INFO] [stdout]   --> src/main.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn bfs(rGraph: &Vec<Vec<usize>>, s: usize, t: usize, parent: &mut Vec<isize>, V: usize) -> bool {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `V` should have a snake case name
[INFO] [stdout]  --> src/main.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn ford_fulkerson(graph: Vec<Vec<usize>>, V: usize, s: usize, t: usize) -> usize {
[INFO] [stdout]   |                                           ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rGraph` should have a snake case name
[INFO] [stdout]  --> src/main.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut rGraph: Vec<Vec<usize>> = Vec::new();
[INFO] [stdout]   |             ^^^^^^ help: convert the identifier to snake case: `r_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rGraph` should have a snake case name
[INFO] [stdout]   --> src/main.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn bfs(rGraph: &Vec<Vec<usize>>, s: usize, t: usize, parent: &mut Vec<isize>, V: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^ help: convert the identifier to snake case: `r_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `V` should have a snake case name
[INFO] [stdout]   --> src/main.rs:47:79
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn bfs(rGraph: &Vec<Vec<usize>>, s: usize, t: usize, parent: &mut Vec<isize>, V: usize) -> bool {
[INFO] [stdout]    |                                                                               ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.47s
[INFO] running `Command { std: "docker" "inspect" "0c61a16b0cd9ee4529b7b65edec7fef2224cce6853296c4ad8cfab36c1f4815a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c61a16b0cd9ee4529b7b65edec7fef2224cce6853296c4ad8cfab36c1f4815a", kill_on_drop: false }`
[INFO] [stdout] 0c61a16b0cd9ee4529b7b65edec7fef2224cce6853296c4ad8cfab36c1f4815a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6fbe7a3dcefb7cbc7d6dff7b3329534e55054d25512595b6c2b8d91fb2f6557
[INFO] running `Command { std: "docker" "start" "-a" "f6fbe7a3dcefb7cbc7d6dff7b3329534e55054d25512595b6c2b8d91fb2f6557", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling maxflow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::LinkedList`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::collections::LinkedList;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ford_fulkerson`
[INFO] [stdout]  --> src/main.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn ford_fulkerson(graph: Vec<Vec<usize>>, V: usize, s: usize, t: usize) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `bfs`
[INFO] [stdout]   --> src/main.rs:47:4
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn bfs(rGraph: &Vec<Vec<usize>>, s: usize, t: usize, parent: &mut Vec<isize>, V: usize) -> bool {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `V` should have a snake case name
[INFO] [stdout]  --> src/main.rs:5:43
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn ford_fulkerson(graph: Vec<Vec<usize>>, V: usize, s: usize, t: usize) -> usize {
[INFO] [stdout]   |                                           ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rGraph` should have a snake case name
[INFO] [stdout]  --> src/main.rs:8:13
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let mut rGraph: Vec<Vec<usize>> = Vec::new();
[INFO] [stdout]   |             ^^^^^^ help: convert the identifier to snake case: `r_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `rGraph` should have a snake case name
[INFO] [stdout]   --> src/main.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn bfs(rGraph: &Vec<Vec<usize>>, s: usize, t: usize, parent: &mut Vec<isize>, V: usize) -> bool {
[INFO] [stdout]    |        ^^^^^^ help: convert the identifier to snake case: `r_graph`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `V` should have a snake case name
[INFO] [stdout]   --> src/main.rs:47:79
[INFO] [stdout]    |
[INFO] [stdout] 47 | fn bfs(rGraph: &Vec<Vec<usize>>, s: usize, t: usize, parent: &mut Vec<isize>, V: usize) -> bool {
[INFO] [stdout]    |                                                                               ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2m 03s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/maxflow-a6ff69cea6eaf59c)
[INFO] running `Command { std: "docker" "inspect" "f6fbe7a3dcefb7cbc7d6dff7b3329534e55054d25512595b6c2b8d91fb2f6557", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6fbe7a3dcefb7cbc7d6dff7b3329534e55054d25512595b6c2b8d91fb2f6557", kill_on_drop: false }`
[INFO] [stdout] f6fbe7a3dcefb7cbc7d6dff7b3329534e55054d25512595b6c2b8d91fb2f6557
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4d9a11fc40498af6462b1e4507723e50d35b8bb8de8d452742754a2ede0f0516
[INFO] running `Command { std: "docker" "start" "-a" "4d9a11fc40498af6462b1e4507723e50d35b8bb8de8d452742754a2ede0f0516", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `std::collections::LinkedList`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::collections::LinkedList;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ford_fulkerson`
[INFO] [stderr]  --> src/main.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn ford_fulkerson(graph: Vec<Vec<usize>>, V: usize, s: usize, t: usize) -> usize {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bfs`
[INFO] [stderr]   --> src/main.rs:47:4
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn bfs(rGraph: &Vec<Vec<usize>>, s: usize, t: usize, parent: &mut Vec<isize>, V: usize) -> bool {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable `V` should have a snake case name
[INFO] [stderr]  --> src/main.rs:5:43
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn ford_fulkerson(graph: Vec<Vec<usize>>, V: usize, s: usize, t: usize) -> usize {
[INFO] [stderr]   |                                           ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `rGraph` should have a snake case name
[INFO] [stderr]  --> src/main.rs:8:13
[INFO] [stderr]   |
[INFO] [stderr] 8 |     let mut rGraph: Vec<Vec<usize>> = Vec::new();
[INFO] [stderr]   |             ^^^^^^ help: convert the identifier to snake case: `r_graph`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `rGraph` should have a snake case name
[INFO] [stderr]   --> src/main.rs:47:8
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn bfs(rGraph: &Vec<Vec<usize>>, s: usize, t: usize, parent: &mut Vec<isize>, V: usize) -> bool {
[INFO] [stderr]    |        ^^^^^^ help: convert the identifier to snake case: `r_graph`
[INFO] [stderr] 
[INFO] [stderr] warning: variable `V` should have a snake case name
[INFO] [stderr]   --> src/main.rs:47:79
[INFO] [stderr]    |
[INFO] [stderr] 47 | fn bfs(rGraph: &Vec<Vec<usize>>, s: usize, t: usize, parent: &mut Vec<isize>, V: usize) -> bool {
[INFO] [stderr]    |                                                                               ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stderr] 
[INFO] [stderr] warning: `maxflow` (bin "maxflow" test) generated 7 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.33s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/maxflow-a6ff69cea6eaf59c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "4d9a11fc40498af6462b1e4507723e50d35b8bb8de8d452742754a2ede0f0516", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d9a11fc40498af6462b1e4507723e50d35b8bb8de8d452742754a2ede0f0516", kill_on_drop: false }`
[INFO] [stdout] 4d9a11fc40498af6462b1e4507723e50d35b8bb8de8d452742754a2ede0f0516