[INFO] fetching crate rainbows 1.0.0...
[INFO] testing rainbows-1.0.0 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate rainbows 1.0.0 into /workspace/builds/worker-58/source
[INFO] validating manifest of crates.io crate rainbows 1.0.0 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rainbows 1.0.0
[INFO] finished tweaking crates.io crate rainbows 1.0.0
[INFO] tweaked toml for crates.io crate rainbows 1.0.0 written to /workspace/builds/worker-58/source/Cargo.toml
[INFO] crate crates.io crate rainbows 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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 assert_cmd v2.0.1
[INFO] [stderr]   Downloaded syn v1.0.79
[INFO] [stderr]   Downloaded predicates v2.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3a13c7ad30a7d723e3d45bb2f1363adccc5deb5620c2acbc93fe9c140e04efab
[INFO] running `Command { std: "docker" "start" "-a" "3a13c7ad30a7d723e3d45bb2f1363adccc5deb5620c2acbc93fe9c140e04efab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3a13c7ad30a7d723e3d45bb2f1363adccc5deb5620c2acbc93fe9c140e04efab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a13c7ad30a7d723e3d45bb2f1363adccc5deb5620c2acbc93fe9c140e04efab", kill_on_drop: false }`
[INFO] [stdout] 3a13c7ad30a7d723e3d45bb2f1363adccc5deb5620c2acbc93fe9c140e04efab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cfc2c5ada476764722f1aea7b9f572093c128b0eb93b0ab7c59b2614ef0df3b9
[INFO] running `Command { std: "docker" "start" "-a" "cfc2c5ada476764722f1aea7b9f572093c128b0eb93b0ab7c59b2614ef0df3b9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling syn v1.0.79
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling os_str_bytes v3.1.0
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.4
[INFO] [stderr]    Compiling clap v3.0.0-beta.4
[INFO] [stderr]    Compiling rainbows v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.13s
[INFO] running `Command { std: "docker" "inspect" "cfc2c5ada476764722f1aea7b9f572093c128b0eb93b0ab7c59b2614ef0df3b9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cfc2c5ada476764722f1aea7b9f572093c128b0eb93b0ab7c59b2614ef0df3b9", kill_on_drop: false }`
[INFO] [stdout] cfc2c5ada476764722f1aea7b9f572093c128b0eb93b0ab7c59b2614ef0df3b9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ff23f055fd39adff9346fb79459280beccd6dbe672104307ef7fcea43c6390c8
[INFO] running `Command { std: "docker" "start" "-a" "ff23f055fd39adff9346fb79459280beccd6dbe672104307ef7fcea43c6390c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling predicates-tree v1.0.3
[INFO] [stderr]    Compiling predicates v2.0.2
[INFO] [stderr]    Compiling assert_cmd v2.0.1
[INFO] [stderr]    Compiling rainbows v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 7.29s
[INFO] running `Command { std: "docker" "inspect" "ff23f055fd39adff9346fb79459280beccd6dbe672104307ef7fcea43c6390c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff23f055fd39adff9346fb79459280beccd6dbe672104307ef7fcea43c6390c8", kill_on_drop: false }`
[INFO] [stdout] ff23f055fd39adff9346fb79459280beccd6dbe672104307ef7fcea43c6390c8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-58/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" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5ab6dc976da1fd6329e234d182cc32d8d8a139a5543aabbb84551f5f02f2d58b
[INFO] running `Command { std: "docker" "start" "-a" "5ab6dc976da1fd6329e234d182cc32d8d8a139a5543aabbb84551f5f02f2d58b", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rainbows-0e0968eda58add1b)
[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 tests/main.rs (/opt/rustwide/target/debug/deps/main-49160f365b9b5227)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test tests::print_two_rainbows ... ok
[INFO] [stdout] test tests::print_one_thousand_rainbows ... ok
[INFO] [stdout] test tests::limit_number_of_rainbows_to_one_thousand ... ok
[INFO] [stdout] test tests::when_unparseable_argument_given__print_one_thousand_rainbows ... ok
[INFO] [stdout] test tests::when_zero_given__print_a_random_number_of_rainbows ... ok
[INFO] [stdout] test tests::when_no_argument_given__print_a_random_number_of_rainbows ... ok
[INFO] [stdout] test tests::print_a_single_rainbow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5ab6dc976da1fd6329e234d182cc32d8d8a139a5543aabbb84551f5f02f2d58b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ab6dc976da1fd6329e234d182cc32d8d8a139a5543aabbb84551f5f02f2d58b", kill_on_drop: false }`
[INFO] [stdout] 5ab6dc976da1fd6329e234d182cc32d8d8a139a5543aabbb84551f5f02f2d58b