[INFO] cloning repository https://github.com/nagashi/The-Traveling-Politician-Problem
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nagashi/The-Traveling-Politician-Problem" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnagashi%2FThe-Traveling-Politician-Problem", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnagashi%2FThe-Traveling-Politician-Problem'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 78bdbf6759ca017a8c863505025b4db7b7734ef0
[INFO] testing nagashi/The-Traveling-Politician-Problem against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnagashi%2FThe-Traveling-Politician-Problem" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nagashi/The-Traveling-Politician-Problem on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nagashi/The-Traveling-Politician-Problem
[INFO] finished tweaking git repo https://github.com/nagashi/The-Traveling-Politician-Problem
[INFO] tweaked toml for git repo https://github.com/nagashi/The-Traveling-Politician-Problem written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/nagashi/The-Traveling-Politician-Problem already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rusted_cypher v1.1.0
[INFO] [stderr]   Downloaded semver-parser v0.6.2
[INFO] [stderr]   Downloaded semver v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f4d327a1c3659c948e7feda3f9ea4c6ed1c0aa73d3e62524257d80d575d561e0
[INFO] running `Command { std: "docker" "start" "-a" "f4d327a1c3659c948e7feda3f9ea4c6ed1c0aa73d3e62524257d80d575d561e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4d327a1c3659c948e7feda3f9ea4c6ed1c0aa73d3e62524257d80d575d561e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4d327a1c3659c948e7feda3f9ea4c6ed1c0aa73d3e62524257d80d575d561e0", kill_on_drop: false }`
[INFO] [stdout] f4d327a1c3659c948e7feda3f9ea4c6ed1c0aa73d3e62524257d80d575d561e0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 32a9f02e39032c671e2cb78b1edacfa7303b329fd8dd100c85195e321262040d
[INFO] running `Command { std: "docker" "start" "-a" "32a9f02e39032c671e2cb78b1edacfa7303b329fd8dd100c85195e321262040d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling syn v1.0.41
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling miniz_oxide v0.4.2
[INFO] [stderr]    Compiling instant v0.1.7
[INFO] [stderr]    Compiling yaml-rust v0.4.4
[INFO] [stderr]    Compiling error-chain v0.12.4
[INFO] [stderr]    Compiling url v1.7.2
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.0
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling flate2 v1.0.17
[INFO] [stderr]    Compiling backtrace v0.3.50
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling parking_lot v0.11.0
[INFO] [stderr]    Compiling ordered-float v1.1.0
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling semver-parser v0.6.2
[INFO] [stderr]    Compiling semver v0.5.1
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]    Compiling chrono v0.4.15
[INFO] [stderr]    Compiling serde-value v0.6.0
[INFO] [stderr]    Compiling serde_yaml v0.8.13
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling hyper v0.10.16
[INFO] [stderr]    Compiling log4rs v0.13.0
[INFO] [stderr]    Compiling rusted_cypher v1.1.0
[INFO] [stderr]    Compiling read_json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:221:5
[INFO] [stdout]     |
[INFO] [stdout] 221 |     &path_csv.push_str(CYPHER_CSV);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let _ = &path_csv.push_str(CYPHER_CSV);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:261:13
[INFO] [stdout]     |
[INFO] [stdout] 261 |             &data_states;
[INFO] [stdout]     |             ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 261 |             let _ = &data_states;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.50s
[INFO] running `Command { std: "docker" "inspect" "32a9f02e39032c671e2cb78b1edacfa7303b329fd8dd100c85195e321262040d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32a9f02e39032c671e2cb78b1edacfa7303b329fd8dd100c85195e321262040d", kill_on_drop: false }`
[INFO] [stdout] 32a9f02e39032c671e2cb78b1edacfa7303b329fd8dd100c85195e321262040d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] feb9d91acff3d69b6ddace57c88c88949195cf1b80ca9c5c45b9bb84f33a471a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "feb9d91acff3d69b6ddace57c88c88949195cf1b80ca9c5c45b9bb84f33a471a", kill_on_drop: false }`
[INFO] [stderr]    Compiling read_json v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:221:5
[INFO] [stdout]     |
[INFO] [stdout] 221 |     &path_csv.push_str(CYPHER_CSV);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 221 |     let _ = &path_csv.push_str(CYPHER_CSV);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:261:13
[INFO] [stdout]     |
[INFO] [stdout] 261 |             &data_states;
[INFO] [stdout]     |             ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 261 |             let _ = &data_states;
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `Command { std: "docker" "inspect" "feb9d91acff3d69b6ddace57c88c88949195cf1b80ca9c5c45b9bb84f33a471a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "feb9d91acff3d69b6ddace57c88c88949195cf1b80ca9c5c45b9bb84f33a471a", kill_on_drop: false }`
[INFO] [stdout] feb9d91acff3d69b6ddace57c88c88949195cf1b80ca9c5c45b9bb84f33a471a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 91b9e0b8ff95dc76ed148cf1aa0c26a6d7870d5e3333f9c610973691f6bdcdf8
[INFO] running `Command { std: "docker" "start" "-a" "91b9e0b8ff95dc76ed148cf1aa0c26a6d7870d5e3333f9c610973691f6bdcdf8", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/main.rs:221:5
[INFO] [stderr]     |
[INFO] [stderr] 221 |     &path_csv.push_str(CYPHER_CSV);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 221 |     let _ = &path_csv.push_str(CYPHER_CSV);
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/main.rs:261:13
[INFO] [stderr]     |
[INFO] [stderr] 261 |             &data_states;
[INFO] [stderr]     |             ^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 261 |             let _ = &data_states;
[INFO] [stderr]     |             +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `read_json` (bin "read_json" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/read_json-e70fe568b922b48a)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/read_json-736d4ee3dae035a3)
[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] [stderr]    Doc-tests read_json
[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" "91b9e0b8ff95dc76ed148cf1aa0c26a6d7870d5e3333f9c610973691f6bdcdf8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91b9e0b8ff95dc76ed148cf1aa0c26a6d7870d5e3333f9c610973691f6bdcdf8", kill_on_drop: false }`
[INFO] [stdout] 91b9e0b8ff95dc76ed148cf1aa0c26a6d7870d5e3333f9c610973691f6bdcdf8