[INFO] fetching crate mock-io 0.3.2...
[INFO] testing mock-io-0.3.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate mock-io 0.3.2 into /workspace/builds/worker-89/source
[INFO] validating manifest of crates.io crate mock-io 0.3.2 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 mock-io 0.3.2
[INFO] finished tweaking crates.io crate mock-io 0.3.2
[INFO] tweaked toml for crates.io crate mock-io 0.3.2 written to /workspace/builds/worker-89/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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] 5fd5d2a42e105e6e408482682d10a0a2189f2b1db613f13ccec135c582dfcbda
[INFO] running `Command { std: "docker" "start" "-a" "5fd5d2a42e105e6e408482682d10a0a2189f2b1db613f13ccec135c582dfcbda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fd5d2a42e105e6e408482682d10a0a2189f2b1db613f13ccec135c582dfcbda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fd5d2a42e105e6e408482682d10a0a2189f2b1db613f13ccec135c582dfcbda", kill_on_drop: false }`
[INFO] [stdout] 5fd5d2a42e105e6e408482682d10a0a2189f2b1db613f13ccec135c582dfcbda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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] 63688a2cb1a03ee645f0bb79ddd8be3bbd1817975f33db9cc7902f15af59eefb
[INFO] running `Command { std: "docker" "start" "-a" "63688a2cb1a03ee645f0bb79ddd8be3bbd1817975f33db9cc7902f15af59eefb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling mock-io v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.43s
[INFO] running `Command { std: "docker" "inspect" "63688a2cb1a03ee645f0bb79ddd8be3bbd1817975f33db9cc7902f15af59eefb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63688a2cb1a03ee645f0bb79ddd8be3bbd1817975f33db9cc7902f15af59eefb", kill_on_drop: false }`
[INFO] [stdout] 63688a2cb1a03ee645f0bb79ddd8be3bbd1817975f33db9cc7902f15af59eefb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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] 1387d68cbeda736eefc2b49caeacf186a7e9f422b082d17635e477cc6bbfa3ad
[INFO] running `Command { std: "docker" "start" "-a" "1387d68cbeda736eefc2b49caeacf186a7e9f422b082d17635e477cc6bbfa3ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling bytes v1.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.7
[INFO] [stderr]    Compiling tokio v1.11.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling tokio-macros v1.3.0
[INFO] [stderr]    Compiling mock-io v0.3.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 10.76s
[INFO] running `Command { std: "docker" "inspect" "1387d68cbeda736eefc2b49caeacf186a7e9f422b082d17635e477cc6bbfa3ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1387d68cbeda736eefc2b49caeacf186a7e9f422b082d17635e477cc6bbfa3ad", kill_on_drop: false }`
[INFO] [stdout] 1387d68cbeda736eefc2b49caeacf186a7e9f422b082d17635e477cc6bbfa3ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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] 72f669d729b1b44df1a2f86e2fd7ff1502d76cd67aecd4863ff2f6fdd1dee4ac
[INFO] running `Command { std: "docker" "start" "-a" "72f669d729b1b44df1a2f86e2fd7ff1502d76cd67aecd4863ff2f6fdd1dee4ac", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mock_io-e249a8ccee304e37)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test mock_stream::sync::tests::check_stream_communication ... ok
[INFO] [stderr]    Doc-tests mock-io
[INFO] [stdout] test mock_listener::sync::tests::check_listener_flow ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 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 - (line 15) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.81s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "72f669d729b1b44df1a2f86e2fd7ff1502d76cd67aecd4863ff2f6fdd1dee4ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72f669d729b1b44df1a2f86e2fd7ff1502d76cd67aecd4863ff2f6fdd1dee4ac", kill_on_drop: false }`
[INFO] [stdout] 72f669d729b1b44df1a2f86e2fd7ff1502d76cd67aecd4863ff2f6fdd1dee4ac