[INFO] fetching crate ptail 0.2.2...
[INFO] testing ptail-0.2.2 against 1.55.0 for beta-1.56-1
[INFO] extracting crate ptail 0.2.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ptail 0.2.2 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 ptail 0.2.2
[INFO] finished tweaking crates.io crate ptail 0.2.2
[INFO] tweaked toml for crates.io crate ptail 0.2.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate ptail 0.2.2 already has a lockfile, it will not be regenerated
[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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 91e532fbb1237a28cee2e1f48f2a1eb8fec92413e641aacbea4cd839364d9ef0
[INFO] running `Command { std: "docker" "start" "-a" "91e532fbb1237a28cee2e1f48f2a1eb8fec92413e641aacbea4cd839364d9ef0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91e532fbb1237a28cee2e1f48f2a1eb8fec92413e641aacbea4cd839364d9ef0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91e532fbb1237a28cee2e1f48f2a1eb8fec92413e641aacbea4cd839364d9ef0", kill_on_drop: false }`
[INFO] [stdout] 91e532fbb1237a28cee2e1f48f2a1eb8fec92413e641aacbea4cd839364d9ef0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 4558193c59932146d06a43555b8ff14517a5a5b75c160724bd8501fcdc77af97
[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" "4558193c59932146d06a43555b8ff14517a5a5b75c160724bd8501fcdc77af97", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.8
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling once_cell v1.2.0
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling clicolors-control v1.0.1
[INFO] [stderr]    Compiling termios v0.3.1
[INFO] [stderr]    Compiling shared_child v0.3.4
[INFO] [stderr]    Compiling os_pipe v0.9.1
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling console v0.9.1
[INFO] [stderr]    Compiling duct v0.13.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling backtrace v0.3.40
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling synstructure v0.12.2
[INFO] [stderr]    Compiling structopt-derive v0.3.4
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling structopt v0.3.4
[INFO] [stderr]    Compiling ptail v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.96s
[INFO] running `Command { std: "docker" "inspect" "4558193c59932146d06a43555b8ff14517a5a5b75c160724bd8501fcdc77af97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4558193c59932146d06a43555b8ff14517a5a5b75c160724bd8501fcdc77af97", kill_on_drop: false }`
[INFO] [stdout] 4558193c59932146d06a43555b8ff14517a5a5b75c160724bd8501fcdc77af97
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 858135fafbc3cf5aec6d2c9c16d89cce66c1e9c266d7f3dce4739c102e0771e6
[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" "858135fafbc3cf5aec6d2c9c16d89cce66c1e9c266d7f3dce4739c102e0771e6", kill_on_drop: false }`
[INFO] [stderr]    Compiling ptail v0.2.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "858135fafbc3cf5aec6d2c9c16d89cce66c1e9c266d7f3dce4739c102e0771e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "858135fafbc3cf5aec6d2c9c16d89cce66c1e9c266d7f3dce4739c102e0771e6", kill_on_drop: false }`
[INFO] [stdout] 858135fafbc3cf5aec6d2c9c16d89cce66c1e9c266d7f3dce4739c102e0771e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] fc254a5d13664d840f00b6d2d8ff81a8e68706466577ab47e0eab1d300ad5a03
[INFO] running `Command { std: "docker" "start" "-a" "fc254a5d13664d840f00b6d2d8ff81a8e68706466577ab47e0eab1d300ad5a03", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/ptail-2cf285a22e598c45)
[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" "fc254a5d13664d840f00b6d2d8ff81a8e68706466577ab47e0eab1d300ad5a03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc254a5d13664d840f00b6d2d8ff81a8e68706466577ab47e0eab1d300ad5a03", kill_on_drop: false }`
[INFO] [stdout] fc254a5d13664d840f00b6d2d8ff81a8e68706466577ab47e0eab1d300ad5a03