[INFO] fetching crate positioned-io-preview 0.3.3...
[INFO] checking positioned-io-preview-0.3.3 against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] extracting crate positioned-io-preview 0.3.3 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate positioned-io-preview 0.3.3 on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate positioned-io-preview 0.3.3
[INFO] finished tweaking crates.io crate positioned-io-preview 0.3.3
[INFO] tweaked toml for crates.io crate positioned-io-preview 0.3.3 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "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] cc300ae9f6946164e89e3bdb739d33e19e52f312f7d3a31e23eff30c4357d14e
[INFO] running `Command { std: "docker" "start" "-a" "cc300ae9f6946164e89e3bdb739d33e19e52f312f7d3a31e23eff30c4357d14e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc300ae9f6946164e89e3bdb739d33e19e52f312f7d3a31e23eff30c4357d14e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc300ae9f6946164e89e3bdb739d33e19e52f312f7d3a31e23eff30c4357d14e", kill_on_drop: false }`
[INFO] [stdout] cc300ae9f6946164e89e3bdb739d33e19e52f312f7d3a31e23eff30c4357d14e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=forbid" "-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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 425a8207a5baf243ee3ef0ee42e9a7a3524d4dd97d4764fe32c0aebddb9373de
[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" "425a8207a5baf243ee3ef0ee42e9a7a3524d4dd97d4764fe32c0aebddb9373de", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking memchr v2.3.3
[INFO] [stderr]     Checking positioned-io-preview v0.3.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking log v0.4.11
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking quickcheck v0.8.5
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.24s
[INFO] running `Command { std: "docker" "inspect" "425a8207a5baf243ee3ef0ee42e9a7a3524d4dd97d4764fe32c0aebddb9373de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "425a8207a5baf243ee3ef0ee42e9a7a3524d4dd97d4764fe32c0aebddb9373de", kill_on_drop: false }`
[INFO] [stdout] 425a8207a5baf243ee3ef0ee42e9a7a3524d4dd97d4764fe32c0aebddb9373de