[INFO] cloning repository https://github.com/NattapongSiri/demo_best_corpus_analysis.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NattapongSiri/demo_best_corpus_analysis.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNattapongSiri%2Fdemo_best_corpus_analysis.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNattapongSiri%2Fdemo_best_corpus_analysis.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 122e9ed3f56355a1fc3ca26a5894c7104ec7c9cc
[INFO] testing NattapongSiri/demo_best_corpus_analysis.rs against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNattapongSiri%2Fdemo_best_corpus_analysis.rs" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NattapongSiri/demo_best_corpus_analysis.rs on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NattapongSiri/demo_best_corpus_analysis.rs
[INFO] finished tweaking git repo https://github.com/NattapongSiri/demo_best_corpus_analysis.rs
[INFO] tweaked toml for git repo https://github.com/NattapongSiri/demo_best_corpus_analysis.rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/NattapongSiri/demo_best_corpus_analysis.rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.55.0" "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] 161ed10d4197da72af8f1623965785578ed52e5d8878f48340340fd87ac20fee
[INFO] running `Command { std: "docker" "start" "-a" "161ed10d4197da72af8f1623965785578ed52e5d8878f48340340fd87ac20fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "161ed10d4197da72af8f1623965785578ed52e5d8878f48340340fd87ac20fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "161ed10d4197da72af8f1623965785578ed52e5d8878f48340340fd87ac20fee", kill_on_drop: false }`
[INFO] [stdout] 161ed10d4197da72af8f1623965785578ed52e5d8878f48340340fd87ac20fee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.55.0" "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] 001d74416db5476aeb224c7f4d53dd04d67890bab1b1ea14ccc9aed1555e6c59
[INFO] running `Command { std: "docker" "start" "-a" "001d74416db5476aeb224c7f4d53dd04d67890bab1b1ea14ccc9aed1555e6c59", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.90
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling unbytify v0.2.0
[INFO] [stderr]    Compiling num_cpus v1.10.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.3.1
[INFO] [stderr]    Compiling crossbeam-deque v0.2.0
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]    Compiling csv v1.0.7
[INFO] [stderr]    Compiling serde_json v1.0.39
[INFO] [stderr]    Compiling best_analysis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `labels`
[INFO] [stdout]    --> src/main.rs:256:16
[INFO] [stdout]     |
[INFO] [stdout] 256 |     let (vecs, labels): (Vec<u8>, Vec<u8>) = tagged_chars.iter().cloned().unzip();
[INFO] [stdout]     |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_labels`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.04s
[INFO] running `Command { std: "docker" "inspect" "001d74416db5476aeb224c7f4d53dd04d67890bab1b1ea14ccc9aed1555e6c59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "001d74416db5476aeb224c7f4d53dd04d67890bab1b1ea14ccc9aed1555e6c59", kill_on_drop: false }`
[INFO] [stdout] 001d74416db5476aeb224c7f4d53dd04d67890bab1b1ea14ccc9aed1555e6c59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3983f12d37e79f606710268817ec7d9848dbaa4145cb7547def64682c634d8e
[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" "c3983f12d37e79f606710268817ec7d9848dbaa4145cb7547def64682c634d8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling best_analysis v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `labels`
[INFO] [stdout]    --> src/main.rs:256:16
[INFO] [stdout]     |
[INFO] [stdout] 256 |     let (vecs, labels): (Vec<u8>, Vec<u8>) = tagged_chars.iter().cloned().unzip();
[INFO] [stdout]     |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_labels`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "c3983f12d37e79f606710268817ec7d9848dbaa4145cb7547def64682c634d8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3983f12d37e79f606710268817ec7d9848dbaa4145cb7547def64682c634d8e", kill_on_drop: false }`
[INFO] [stdout] c3983f12d37e79f606710268817ec7d9848dbaa4145cb7547def64682c634d8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5031d50d561bdf233d5d5f1802881cd143f8d6dfef25aeb5999316171eb35a61
[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" "5031d50d561bdf233d5d5f1802881cd143f8d6dfef25aeb5999316171eb35a61", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `labels`
[INFO] [stderr]    --> src/main.rs:256:16
[INFO] [stderr]     |
[INFO] [stderr] 256 |     let (vecs, labels): (Vec<u8>, Vec<u8>) = tagged_chars.iter().cloned().unzip();
[INFO] [stderr]     |                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_labels`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `best_analysis` (bin "best_analysis" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/best_analysis-65c0d01f2d01af92)
[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" "5031d50d561bdf233d5d5f1802881cd143f8d6dfef25aeb5999316171eb35a61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5031d50d561bdf233d5d5f1802881cd143f8d6dfef25aeb5999316171eb35a61", kill_on_drop: false }`
[INFO] [stdout] 5031d50d561bdf233d5d5f1802881cd143f8d6dfef25aeb5999316171eb35a61