[INFO] fetching crate mio-named-pipes 0.1.7...
[INFO] testing mio-named-pipes-0.1.7 against 1.49.0 for beta-1.50-1
[INFO] extracting crate mio-named-pipes 0.1.7 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mio-named-pipes 0.1.7 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mio-named-pipes 0.1.7
[INFO] finished tweaking crates.io crate mio-named-pipes 0.1.7
[INFO] tweaked toml for crates.io crate mio-named-pipes 0.1.7 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de9d5479944b5ed2b25b8c2b2a0dbc20c9953f6f4c8a7d62ff173659cf4c43b5
[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" "de9d5479944b5ed2b25b8c2b2a0dbc20c9953f6f4c8a7d62ff173659cf4c43b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de9d5479944b5ed2b25b8c2b2a0dbc20c9953f6f4c8a7d62ff173659cf4c43b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de9d5479944b5ed2b25b8c2b2a0dbc20c9953f6f4c8a7d62ff173659cf4c43b5", kill_on_drop: false }`
[INFO] [stdout] de9d5479944b5ed2b25b8c2b2a0dbc20c9953f6f4c8a7d62ff173659cf4c43b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] bebe0e4639a91859a5d3b7abb637bb337e4b80a8fa01f5c7710ad7537b8fdc51
[INFO] running `Command { std: "docker" "start" "-a" "bebe0e4639a91859a5d3b7abb637bb337e4b80a8fa01f5c7710ad7537b8fdc51", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mio-named-pipes v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "bebe0e4639a91859a5d3b7abb637bb337e4b80a8fa01f5c7710ad7537b8fdc51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bebe0e4639a91859a5d3b7abb637bb337e4b80a8fa01f5c7710ad7537b8fdc51", kill_on_drop: false }`
[INFO] [stdout] bebe0e4639a91859a5d3b7abb637bb337e4b80a8fa01f5c7710ad7537b8fdc51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a1a0996d9cb8d428cff413546974b3c74bb4c2820638536849be1fec4a59e452
[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" "a1a0996d9cb8d428cff413546974b3c74bb4c2820638536849be1fec4a59e452", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling mio-named-pipes v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0463]: can't find crate for `mio`
[INFO] [stdout]  --> tests/smoke.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | extern crate mio;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mio-named-pipes`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a1a0996d9cb8d428cff413546974b3c74bb4c2820638536849be1fec4a59e452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a1a0996d9cb8d428cff413546974b3c74bb4c2820638536849be1fec4a59e452", kill_on_drop: false }`
[INFO] [stdout] a1a0996d9cb8d428cff413546974b3c74bb4c2820638536849be1fec4a59e452