[INFO] fetching crate pipe 0.4.0...
[INFO] testing pipe-0.4.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate pipe 0.4.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate pipe 0.4.0 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 pipe 0.4.0
[INFO] finished tweaking crates.io crate pipe 0.4.0
[INFO] tweaked toml for crates.io crate pipe 0.4.0 written to /workspace/builds/worker-5/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 45a3da5df20281c4e820885318b12ece118e3ed785613bef14c94319d9cd7484
[INFO] running `Command { std: "docker" "start" "-a" "45a3da5df20281c4e820885318b12ece118e3ed785613bef14c94319d9cd7484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "45a3da5df20281c4e820885318b12ece118e3ed785613bef14c94319d9cd7484", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45a3da5df20281c4e820885318b12ece118e3ed785613bef14c94319d9cd7484", kill_on_drop: false }`
[INFO] [stdout] 45a3da5df20281c4e820885318b12ece118e3ed785613bef14c94319d9cd7484
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 058099f95ab07bf8636e86327c44227c549fd6a43b2b9c9831c9ee67cf4b9216
[INFO] running `Command { std: "docker" "start" "-a" "058099f95ab07bf8636e86327c44227c549fd6a43b2b9c9831c9ee67cf4b9216", kill_on_drop: false }`
[INFO] [stderr]    Compiling pipe v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.27s
[INFO] running `Command { std: "docker" "inspect" "058099f95ab07bf8636e86327c44227c549fd6a43b2b9c9831c9ee67cf4b9216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "058099f95ab07bf8636e86327c44227c549fd6a43b2b9c9831c9ee67cf4b9216", kill_on_drop: false }`
[INFO] [stdout] 058099f95ab07bf8636e86327c44227c549fd6a43b2b9c9831c9ee67cf4b9216
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] 7eb9a68ab1d5d33d18012903ba1dc615cd791efafe3bd5f4f31ec1525b20c261
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "7eb9a68ab1d5d33d18012903ba1dc615cd791efafe3bd5f4f31ec1525b20c261", kill_on_drop: false }`
[INFO] [stderr]    Compiling os_pipe v0.9.2
[INFO] [stderr]    Compiling pipe v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.69s
[INFO] running `Command { std: "docker" "inspect" "7eb9a68ab1d5d33d18012903ba1dc615cd791efafe3bd5f4f31ec1525b20c261", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7eb9a68ab1d5d33d18012903ba1dc615cd791efafe3bd5f4f31ec1525b20c261", kill_on_drop: false }`
[INFO] [stdout] 7eb9a68ab1d5d33d18012903ba1dc615cd791efafe3bd5f4f31ec1525b20c261
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6e41a3aab64e53ae495c12b094294f4b21804bb666b066d8bbd639ccdc08d0c4
[INFO] running `Command { std: "docker" "start" "-a" "6e41a3aab64e53ae495c12b094294f4b21804bb666b066d8bbd639ccdc08d0c4", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/pipe-bb8a0c185fab5c6e)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::pipe_reader ... ok
[INFO] [stdout] test tests::pipe_writer_fail_buffered ... ok
[INFO] [stdout] test tests::small_reads_buffered ... ok
[INFO] [stdout] test tests::pipe_writer_fail ... ok
[INFO] [stdout] test tests::pipe_reader_buffered ... ok
[INFO] [stdout] test tests::small_reads ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.03s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests pipe
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 9) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6e41a3aab64e53ae495c12b094294f4b21804bb666b066d8bbd639ccdc08d0c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e41a3aab64e53ae495c12b094294f4b21804bb666b066d8bbd639ccdc08d0c4", kill_on_drop: false }`
[INFO] [stdout] 6e41a3aab64e53ae495c12b094294f4b21804bb666b066d8bbd639ccdc08d0c4