[INFO] fetching crate utf8 0.1.0...
[INFO] testing utf8-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate utf8 0.1.0 into /workspace/builds/worker-74/source
[INFO] validating manifest of crates.io crate utf8 0.1.0 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 crates.io crate utf8 0.1.0
[INFO] finished tweaking crates.io crate utf8 0.1.0
[INFO] tweaked toml for crates.io crate utf8 0.1.0 written to /workspace/builds/worker-74/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] 1396aa6567955d91f2298f3ff2bee93cae433485b25247cfab8d03dce1e0e9a1
[INFO] running `Command { std: "docker" "start" "-a" "1396aa6567955d91f2298f3ff2bee93cae433485b25247cfab8d03dce1e0e9a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1396aa6567955d91f2298f3ff2bee93cae433485b25247cfab8d03dce1e0e9a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1396aa6567955d91f2298f3ff2bee93cae433485b25247cfab8d03dce1e0e9a1", kill_on_drop: false }`
[INFO] [stdout] 1396aa6567955d91f2298f3ff2bee93cae433485b25247cfab8d03dce1e0e9a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] fb7858dd7e88f343ab8c19f67512dd7df1c22f0dc11ce0770150b33aee70c8f3
[INFO] running `Command { std: "docker" "start" "-a" "fb7858dd7e88f343ab8c19f67512dd7df1c22f0dc11ce0770150b33aee70c8f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling utf8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "fb7858dd7e88f343ab8c19f67512dd7df1c22f0dc11ce0770150b33aee70c8f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb7858dd7e88f343ab8c19f67512dd7df1c22f0dc11ce0770150b33aee70c8f3", kill_on_drop: false }`
[INFO] [stdout] fb7858dd7e88f343ab8c19f67512dd7df1c22f0dc11ce0770150b33aee70c8f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] 3586d178da4c3e4e59b17547f52a71edaf3bd16b1818532b048289dcdbb04103
[INFO] running `Command { std: "docker" "start" "-a" "3586d178da4c3e4e59b17547f52a71edaf3bd16b1818532b048289dcdbb04103", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling utf8 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.48s
[INFO] running `Command { std: "docker" "inspect" "3586d178da4c3e4e59b17547f52a71edaf3bd16b1818532b048289dcdbb04103", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3586d178da4c3e4e59b17547f52a71edaf3bd16b1818532b048289dcdbb04103", kill_on_drop: false }`
[INFO] [stdout] 3586d178da4c3e4e59b17547f52a71edaf3bd16b1818532b048289dcdbb04103
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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] 302d66d2126bb4969af6aedc7f5a5ae65b9f46583278fa73d756b675ca35d61a
[INFO] running `Command { std: "docker" "start" "-a" "302d66d2126bb4969af6aedc7f5a5ae65b9f46583278fa73d756b675ca35d61a", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/utf8-1b51b8f6b71f358d)
[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 utf8
[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" "302d66d2126bb4969af6aedc7f5a5ae65b9f46583278fa73d756b675ca35d61a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "302d66d2126bb4969af6aedc7f5a5ae65b9f46583278fa73d756b675ca35d61a", kill_on_drop: false }`
[INFO] [stdout] 302d66d2126bb4969af6aedc7f5a5ae65b9f46583278fa73d756b675ca35d61a