[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 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faxel-kaliff%2Fmaxflow" "/workspace/builds/worker-21/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-21/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/axel-kaliff/maxflow on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-21/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" "+1.59.0" "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-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f0752186832628b8e446cc03a12e94631947c586b305eeb0d87f086033417b3
[INFO] running `Command { std: "docker" "start" "-a" "7f0752186832628b8e446cc03a12e94631947c586b305eeb0d87f086033417b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f0752186832628b8e446cc03a12e94631947c586b305eeb0d87f086033417b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f0752186832628b8e446cc03a12e94631947c586b305eeb0d87f086033417b3", kill_on_drop: false }`
[INFO] [stdout] 7f0752186832628b8e446cc03a12e94631947c586b305eeb0d87f086033417b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad57b93499531c897828c6f552588cb1a6c8a3cf0d4434cae142a59142b8493c
[INFO] running `Command { std: "docker" "start" "-a" "ad57b93499531c897828c6f552588cb1a6c8a3cf0d4434cae142a59142b8493c", 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 30.82s
[INFO] running `Command { std: "docker" "inspect" "ad57b93499531c897828c6f552588cb1a6c8a3cf0d4434cae142a59142b8493c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad57b93499531c897828c6f552588cb1a6c8a3cf0d4434cae142a59142b8493c", kill_on_drop: false }`
[INFO] [stdout] ad57b93499531c897828c6f552588cb1a6c8a3cf0d4434cae142a59142b8493c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c59602a1021d805a1ac3208f2de502c712b4e0c337b31a1b63e8e078aaff2cf
[INFO] running `Command { std: "docker" "start" "-a" "3c59602a1021d805a1ac3208f2de502c712b4e0c337b31a1b63e8e078aaff2cf", kill_on_drop: false }`
[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 0.61s
[INFO] running `Command { std: "docker" "inspect" "3c59602a1021d805a1ac3208f2de502c712b4e0c337b31a1b63e8e078aaff2cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c59602a1021d805a1ac3208f2de502c712b4e0c337b31a1b63e8e078aaff2cf", kill_on_drop: false }`
[INFO] [stdout] 3c59602a1021d805a1ac3208f2de502c712b4e0c337b31a1b63e8e078aaff2cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bbf919a39dd1a418b7d225ad8def36b3e97e586dfdae8c76134467d2b7f1c9ce
[INFO] running `Command { std: "docker" "start" "-a" "bbf919a39dd1a418b7d225ad8def36b3e97e586dfdae8c76134467d2b7f1c9ce", kill_on_drop: false }`
[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] [stdout] 
[INFO] [stderr] 47 | fn bfs(rGraph: &Vec<Vec<usize>>, s: usize, t: usize, parent: &mut Vec<isize>, V: usize) -> bool {
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |    ^^^
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] warning: variable `V` should have a snake case name
[INFO] [stdout] 
[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 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/maxflow-e954179d6d43a832)
[INFO] running `Command { std: "docker" "inspect" "bbf919a39dd1a418b7d225ad8def36b3e97e586dfdae8c76134467d2b7f1c9ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbf919a39dd1a418b7d225ad8def36b3e97e586dfdae8c76134467d2b7f1c9ce", kill_on_drop: false }`
[INFO] [stdout] bbf919a39dd1a418b7d225ad8def36b3e97e586dfdae8c76134467d2b7f1c9ce