[INFO] fetching crate practicegrep 0.1.0...
[INFO] testing practicegrep-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate practicegrep 0.1.0 into /workspace/builds/worker-110/source
[INFO] validating manifest of crates.io crate practicegrep 0.1.0 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 crates.io crate practicegrep 0.1.0
[INFO] finished tweaking crates.io crate practicegrep 0.1.0
[INFO] tweaked toml for crates.io crate practicegrep 0.1.0 written to /workspace/builds/worker-110/source/Cargo.toml
[INFO] crate crates.io crate practicegrep 0.1.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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] [stdout] 134888aabfaa56c25b00c255f0eebd49f26370d88ad443138c4b8ace6d2c08e3
[INFO] running `Command { std: "docker" "start" "-a" "134888aabfaa56c25b00c255f0eebd49f26370d88ad443138c4b8ace6d2c08e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "134888aabfaa56c25b00c255f0eebd49f26370d88ad443138c4b8ace6d2c08e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "134888aabfaa56c25b00c255f0eebd49f26370d88ad443138c4b8ace6d2c08e3", kill_on_drop: false }`
[INFO] [stdout] 134888aabfaa56c25b00c255f0eebd49f26370d88ad443138c4b8ace6d2c08e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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] [stdout] c3706b327cd678566b494000d36435f66fe0d8112fdf3581f21254adb5b03bf6
[INFO] running `Command { std: "docker" "start" "-a" "c3706b327cd678566b494000d36435f66fe0d8112fdf3581f21254adb5b03bf6", kill_on_drop: false }`
[INFO] [stderr]    Compiling practicegrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "c3706b327cd678566b494000d36435f66fe0d8112fdf3581f21254adb5b03bf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3706b327cd678566b494000d36435f66fe0d8112fdf3581f21254adb5b03bf6", kill_on_drop: false }`
[INFO] [stdout] c3706b327cd678566b494000d36435f66fe0d8112fdf3581f21254adb5b03bf6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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] 7d48e50979bbd5f2e48709c0b0017eed7305eb677f5b4688c32bf03f7b609b63
[INFO] running `Command { std: "docker" "start" "-a" "7d48e50979bbd5f2e48709c0b0017eed7305eb677f5b4688c32bf03f7b609b63", kill_on_drop: false }`
[INFO] [stderr]    Compiling practicegrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "7d48e50979bbd5f2e48709c0b0017eed7305eb677f5b4688c32bf03f7b609b63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d48e50979bbd5f2e48709c0b0017eed7305eb677f5b4688c32bf03f7b609b63", kill_on_drop: false }`
[INFO] [stdout] 7d48e50979bbd5f2e48709c0b0017eed7305eb677f5b4688c32bf03f7b609b63
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-110/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] 5b1a0f64511dabd30458fe308df2844cb22a6f0c43c48a88eae303bf6fe87be4
[INFO] running `Command { std: "docker" "start" "-a" "5b1a0f64511dabd30458fe308df2844cb22a6f0c43c48a88eae303bf6fe87be4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/practicegrep-f2f56e8186fdb4e8)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/practicegrep-acc704d12f4563cd)
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::case_insensitive ... ok
[INFO] [stdout] test tests::case_sensitive_does_not_return_insensitive ... ok
[INFO] [stdout] test tests::constructor_does_not_return_error_when_enough_arguments ... ok
[INFO] [stdout] test tests::constructor_returns_error_when_not_enough_arguments ... ok
[INFO] [stdout] test tests::constructor_returns_valid_config_struct ... ok
[INFO] [stdout] test tests::no_search_results ... ok
[INFO] [stdout] test tests::one_case_sensitive_search_result ... ok
[INFO] [stdout] test tests::run_returns_err_with_invalid_file ... ok
[INFO] [stdout] test tests::run_returns_ok_with_valid_file ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[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] [stderr]    Doc-tests practicegrep
[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" "5b1a0f64511dabd30458fe308df2844cb22a6f0c43c48a88eae303bf6fe87be4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b1a0f64511dabd30458fe308df2844cb22a6f0c43c48a88eae303bf6fe87be4", kill_on_drop: false }`
[INFO] [stdout] 5b1a0f64511dabd30458fe308df2844cb22a6f0c43c48a88eae303bf6fe87be4