[INFO] fetching crate readwrite 0.2.0...
[INFO] testing readwrite-0.2.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate readwrite 0.2.0 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate readwrite 0.2.0 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 readwrite 0.2.0
[INFO] finished tweaking crates.io crate readwrite 0.2.0
[INFO] tweaked toml for crates.io crate readwrite 0.2.0 written to /workspace/builds/worker-24/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] 6a34585ebddbcf2e3ab586a0274e8db80f726393758abf1e408372a36e09bbf4
[INFO] running `Command { std: "docker" "start" "-a" "6a34585ebddbcf2e3ab586a0274e8db80f726393758abf1e408372a36e09bbf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a34585ebddbcf2e3ab586a0274e8db80f726393758abf1e408372a36e09bbf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a34585ebddbcf2e3ab586a0274e8db80f726393758abf1e408372a36e09bbf4", kill_on_drop: false }`
[INFO] [stdout] 6a34585ebddbcf2e3ab586a0274e8db80f726393758abf1e408372a36e09bbf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] cd2239428d82a34c301ee9e11dff7cef8fc4132988e1f3e8d7158cb8354cb9ee
[INFO] running `Command { std: "docker" "start" "-a" "cd2239428d82a34c301ee9e11dff7cef8fc4132988e1f3e8d7158cb8354cb9ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling readwrite v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `Command { std: "docker" "inspect" "cd2239428d82a34c301ee9e11dff7cef8fc4132988e1f3e8d7158cb8354cb9ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd2239428d82a34c301ee9e11dff7cef8fc4132988e1f3e8d7158cb8354cb9ee", kill_on_drop: false }`
[INFO] [stdout] cd2239428d82a34c301ee9e11dff7cef8fc4132988e1f3e8d7158cb8354cb9ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] 32ee6d1495df4425509de1551dce27a47fa69ec45c88f46a34d752dfc3f6c101
[INFO] running `Command { std: "docker" "start" "-a" "32ee6d1495df4425509de1551dce27a47fa69ec45c88f46a34d752dfc3f6c101", kill_on_drop: false }`
[INFO] [stderr]    Compiling readwrite v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "32ee6d1495df4425509de1551dce27a47fa69ec45c88f46a34d752dfc3f6c101", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32ee6d1495df4425509de1551dce27a47fa69ec45c88f46a34d752dfc3f6c101", kill_on_drop: false }`
[INFO] [stdout] 32ee6d1495df4425509de1551dce27a47fa69ec45c88f46a34d752dfc3f6c101
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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] 6f3c6e0991c368a9e8dae2bf1c3ae440cdfe8bcaf343e8127808da276a2ec9dd
[INFO] running `Command { std: "docker" "start" "-a" "6f3c6e0991c368a9e8dae2bf1c3ae440cdfe8bcaf343e8127808da276a2ec9dd", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/readwrite-f1c27bdd4ba3aad6)
[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 readwrite
[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" "6f3c6e0991c368a9e8dae2bf1c3ae440cdfe8bcaf343e8127808da276a2ec9dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f3c6e0991c368a9e8dae2bf1c3ae440cdfe8bcaf343e8127808da276a2ec9dd", kill_on_drop: false }`
[INFO] [stdout] 6f3c6e0991c368a9e8dae2bf1c3ae440cdfe8bcaf343e8127808da276a2ec9dd