[INFO] cloning repository https://github.com/fhiroki/rust_word_count
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fhiroki/rust_word_count" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffhiroki%2Frust_word_count", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffhiroki%2Frust_word_count'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 02c6426140e1f0134e368db6eed111c18992ffc0
[INFO] testing fhiroki/rust_word_count 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%2Ffhiroki%2Frust_word_count" "/workspace/builds/worker-38/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-38/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fhiroki/rust_word_count 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/fhiroki/rust_word_count
[INFO] finished tweaking git repo https://github.com/fhiroki/rust_word_count
[INFO] tweaked toml for git repo https://github.com/fhiroki/rust_word_count written to /workspace/builds/worker-38/source/Cargo.toml
[INFO] crate git repo https://github.com/fhiroki/rust_word_count 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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] [stdout] 9492a0e9d94e5e5746f6b8da174d2db2ccae238820c7dc66f8ab8e2efbbe9c0e
[INFO] running `Command { std: "docker" "start" "-a" "9492a0e9d94e5e5746f6b8da174d2db2ccae238820c7dc66f8ab8e2efbbe9c0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9492a0e9d94e5e5746f6b8da174d2db2ccae238820c7dc66f8ab8e2efbbe9c0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9492a0e9d94e5e5746f6b8da174d2db2ccae238820c7dc66f8ab8e2efbbe9c0e", kill_on_drop: false }`
[INFO] [stdout] 9492a0e9d94e5e5746f6b8da174d2db2ccae238820c7dc66f8ab8e2efbbe9c0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] [stdout] 61d2553676653e68693b95bc5881de086dd21f11c2cb048f1f17ca08b67b6f5d
[INFO] running `Command { std: "docker" "start" "-a" "61d2553676653e68693b95bc5881de086dd21f11c2cb048f1f17ca08b67b6f5d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling fhiroki-bicycle-book-wordcount v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]   --> src/main.rs:18:50
[INFO] [stdout]    |
[INFO] [stdout] 18 |         _ => panic!("invalid option: select from {char, word, line}")
[INFO] [stdout]    |                                                  ^                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 18 |         _ => panic!("{}", "invalid option: select from {char, word, line}")
[INFO] [stdout]    |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.03s
[INFO] running `Command { std: "docker" "inspect" "61d2553676653e68693b95bc5881de086dd21f11c2cb048f1f17ca08b67b6f5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61d2553676653e68693b95bc5881de086dd21f11c2cb048f1f17ca08b67b6f5d", kill_on_drop: false }`
[INFO] [stdout] 61d2553676653e68693b95bc5881de086dd21f11c2cb048f1f17ca08b67b6f5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] f5e6a240761dceeeb6165dcbc7e7c5754e3a9a547265436e4bbba768a57a5e8a
[INFO] running `Command { std: "docker" "start" "-a" "f5e6a240761dceeeb6165dcbc7e7c5754e3a9a547265436e4bbba768a57a5e8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling fhiroki-bicycle-book-wordcount v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]   --> src/main.rs:18:50
[INFO] [stdout]    |
[INFO] [stdout] 18 |         _ => panic!("invalid option: select from {char, word, line}")
[INFO] [stdout]    |                                                  ^                ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout]    = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 18 |         _ => panic!("{}", "invalid option: select from {char, word, line}")
[INFO] [stdout]    |                     +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "f5e6a240761dceeeb6165dcbc7e7c5754e3a9a547265436e4bbba768a57a5e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5e6a240761dceeeb6165dcbc7e7c5754e3a9a547265436e4bbba768a57a5e8a", kill_on_drop: false }`
[INFO] [stdout] f5e6a240761dceeeb6165dcbc7e7c5754e3a9a547265436e4bbba768a57a5e8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-38/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] [stdout] 3863dfccb87986363eb91dc4f8f3134ac944a9db28ee98362fe83d5871203d61
[INFO] running `Command { std: "docker" "start" "-a" "3863dfccb87986363eb91dc4f8f3134ac944a9db28ee98362fe83d5871203d61", kill_on_drop: false }`
[INFO] [stderr] warning: panic message contains braces
[INFO] [stderr]   --> src/main.rs:18:50
[INFO] [stderr]    |
[INFO] [stderr] 18 |         _ => panic!("invalid option: select from {char, word, line}")
[INFO] [stderr]    |                                                  ^                ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr]    = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]    |
[INFO] [stderr] 18 |         _ => panic!("{}", "invalid option: select from {char, word, line}")
[INFO] [stderr]    |                     +++++
[INFO] [stderr] 
[INFO] [stderr] warning: `fhiroki-bicycle-book-wordcount` (bin "fhiroki-bicycle-book-wordcount" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fhiroki_bicycle_book_wordcount-7cbf1a6f37b30fe4)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fhiroki_bicycle_book_wordcount-fe04ec88087bc089)
[INFO] [stdout] running 4 tests
[INFO] [stderr]    Doc-tests fhiroki-bicycle-book-wordcount
[INFO] [stdout] test test::word_count_works2 ... ok
[INFO] [stdout] test test::word_count_works ... ok
[INFO] [stdout] test test::word_count_works3 ... ok
[INFO] [stdout] test test::word_count_do_not_contain_unknown_words - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[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] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - count (line 36) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.37s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3863dfccb87986363eb91dc4f8f3134ac944a9db28ee98362fe83d5871203d61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3863dfccb87986363eb91dc4f8f3134ac944a9db28ee98362fe83d5871203d61", kill_on_drop: false }`
[INFO] [stdout] 3863dfccb87986363eb91dc4f8f3134ac944a9db28ee98362fe83d5871203d61