[INFO] fetching crate vmcircbuf 0.2.8...
[INFO] testing vmcircbuf-0.2.8 against 1.49.0 for beta-1.50-1
[INFO] extracting crate vmcircbuf 0.2.8 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate vmcircbuf 0.2.8 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 vmcircbuf 0.2.8
[INFO] finished tweaking crates.io crate vmcircbuf 0.2.8
[INFO] tweaked toml for crates.io crate vmcircbuf 0.2.8 written to /workspace/builds/worker-3/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] e966bb6b45fb553c3b64b65cbc4e2ecbddaedcddcb37d8d6af1e1d2657b8859e
[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" "e966bb6b45fb553c3b64b65cbc4e2ecbddaedcddcb37d8d6af1e1d2657b8859e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e966bb6b45fb553c3b64b65cbc4e2ecbddaedcddcb37d8d6af1e1d2657b8859e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e966bb6b45fb553c3b64b65cbc4e2ecbddaedcddcb37d8d6af1e1d2657b8859e", kill_on_drop: false }`
[INFO] [stdout] e966bb6b45fb553c3b64b65cbc4e2ecbddaedcddcb37d8d6af1e1d2657b8859e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 79f7e7e3b60f252f44920e11f79a705308cdd9c0b4a36538e103147da3b01a0e
[INFO] running `Command { std: "docker" "start" "-a" "79f7e7e3b60f252f44920e11f79a705308cdd9c0b4a36538e103147da3b01a0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling vmcircbuf v0.2.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
[INFO] running `Command { std: "docker" "inspect" "79f7e7e3b60f252f44920e11f79a705308cdd9c0b4a36538e103147da3b01a0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79f7e7e3b60f252f44920e11f79a705308cdd9c0b4a36538e103147da3b01a0e", kill_on_drop: false }`
[INFO] [stdout] 79f7e7e3b60f252f44920e11f79a705308cdd9c0b4a36538e103147da3b01a0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] aab54780324ee5ed65aabb29e774058e6fbcc8c8233486b8a07e13306df37bda
[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" "aab54780324ee5ed65aabb29e774058e6fbcc8c8233486b8a07e13306df37bda", kill_on_drop: false }`
[INFO] [stderr]    Compiling vmcircbuf v0.2.8 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "aab54780324ee5ed65aabb29e774058e6fbcc8c8233486b8a07e13306df37bda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aab54780324ee5ed65aabb29e774058e6fbcc8c8233486b8a07e13306df37bda", kill_on_drop: false }`
[INFO] [stdout] aab54780324ee5ed65aabb29e774058e6fbcc8c8233486b8a07e13306df37bda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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", kill_on_drop: false }`
[INFO] [stdout] ee8d855e5989c345d8cb14fce0fff8fe9c50ed26f725876670c408fb77c59ae2
[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" "ee8d855e5989c345d8cb14fce0fff8fe9c50ed26f725876670c408fb77c59ae2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/vmcircbuf-12d6bda8e6a25439
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test buffer::tests::wrap ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests vmcircbuf
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/buffer.rs - buffer::Buffer (line 23) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ee8d855e5989c345d8cb14fce0fff8fe9c50ed26f725876670c408fb77c59ae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee8d855e5989c345d8cb14fce0fff8fe9c50ed26f725876670c408fb77c59ae2", kill_on_drop: false }`
[INFO] [stdout] ee8d855e5989c345d8cb14fce0fff8fe9c50ed26f725876670c408fb77c59ae2