[INFO] fetching crate duplex 0.6.0...
[INFO] testing duplex-0.6.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate duplex 0.6.0 into /workspace/builds/worker-46/source
[INFO] validating manifest of crates.io crate duplex 0.6.0 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 duplex 0.6.0
[INFO] finished tweaking crates.io crate duplex 0.6.0
[INFO] tweaked toml for crates.io crate duplex 0.6.0 written to /workspace/builds/worker-46/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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded async-process v1.2.0
[INFO] [stderr]   Downloaded io-lifetimes v0.2.4
[INFO] [stderr]   Downloaded errno v0.2.7
[INFO] [stderr]   Downloaded char-device v0.6.1
[INFO] [stderr]   Downloaded duplexify v1.2.2
[INFO] [stderr]   Downloaded readwrite v0.2.0
[INFO] [stderr]   Downloaded serialport v4.0.1
[INFO] [stderr]   Downloaded socketpair v0.9.1
[INFO] [stderr]   Downloaded rsix v0.18.0
[INFO] [stderr]   Downloaded async-std v1.10.0
[INFO] [stderr]   Downloaded linux-raw-sys v0.0.19
[INFO] [stderr]   Downloaded unsafe-io v0.8.2
[INFO] [stderr]   Downloaded ssh2 v0.9.1
[INFO] [stderr]   Downloaded errno-dragonfly v0.1.1
[INFO] [stderr]   Downloaded signal-hook v0.3.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] b10fd71aef37dfc502187bb4ae7c889953e08bc22006deb6c213f10d82b5c891
[INFO] running `Command { std: "docker" "start" "-a" "b10fd71aef37dfc502187bb4ae7c889953e08bc22006deb6c213f10d82b5c891", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b10fd71aef37dfc502187bb4ae7c889953e08bc22006deb6c213f10d82b5c891", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b10fd71aef37dfc502187bb4ae7c889953e08bc22006deb6c213f10d82b5c891", kill_on_drop: false }`
[INFO] [stdout] b10fd71aef37dfc502187bb4ae7c889953e08bc22006deb6c213f10d82b5c891
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] 32f305de75b271bd92e9ae1aa09134439d49791fb7d142e9eadad20e62710603
[INFO] running `Command { std: "docker" "start" "-a" "32f305de75b271bd92e9ae1aa09134439d49791fb7d142e9eadad20e62710603", kill_on_drop: false }`
[INFO] [stderr]    Compiling duplex v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "32f305de75b271bd92e9ae1aa09134439d49791fb7d142e9eadad20e62710603", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32f305de75b271bd92e9ae1aa09134439d49791fb7d142e9eadad20e62710603", kill_on_drop: false }`
[INFO] [stdout] 32f305de75b271bd92e9ae1aa09134439d49791fb7d142e9eadad20e62710603
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] cf83a010bc722cdfb051f02195f3e5aea16094361d7d07f8461c8f1bf3675353
[INFO] running `Command { std: "docker" "start" "-a" "cf83a010bc722cdfb051f02195f3e5aea16094361d7d07f8461c8f1bf3675353", kill_on_drop: false }`
[INFO] [stderr]    Compiling duplex v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "cf83a010bc722cdfb051f02195f3e5aea16094361d7d07f8461c8f1bf3675353", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf83a010bc722cdfb051f02195f3e5aea16094361d7d07f8461c8f1bf3675353", kill_on_drop: false }`
[INFO] [stdout] cf83a010bc722cdfb051f02195f3e5aea16094361d7d07f8461c8f1bf3675353
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-46/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] cc55a542ea30e50ca497de59f2d43b9336b2983c519c7699fc3ca3519fd20284
[INFO] running `Command { std: "docker" "start" "-a" "cc55a542ea30e50ca497de59f2d43b9336b2983c519c7699fc3ca3519fd20284", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/duplex-aa22027484137088)
[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 duplex
[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" "cc55a542ea30e50ca497de59f2d43b9336b2983c519c7699fc3ca3519fd20284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc55a542ea30e50ca497de59f2d43b9336b2983c519c7699fc3ca3519fd20284", kill_on_drop: false }`
[INFO] [stdout] cc55a542ea30e50ca497de59f2d43b9336b2983c519c7699fc3ca3519fd20284