[INFO] cloning repository https://github.com/polyverse/rmesg
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/polyverse/rmesg" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolyverse%2Frmesg", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolyverse%2Frmesg'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9fffe544602e8a72999e4c1c085c7a77b845800f
[INFO] checking polyverse/rmesg against master#d902752866cbbdb331e3cf28ff6bba86ab0f6c62 for pr-77271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpolyverse%2Frmesg" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/polyverse/rmesg on toolchain d902752866cbbdb331e3cf28ff6bba86ab0f6c62
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/polyverse/rmesg
[INFO] finished tweaking git repo https://github.com/polyverse/rmesg
[INFO] tweaked toml for git repo https://github.com/polyverse/rmesg written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/polyverse/rmesg already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f4d9abe5d10d12fa181036a7f1f9f6c577269ff638b832efd5a624bf547752c
[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" "0f4d9abe5d10d12fa181036a7f1f9f6c577269ff638b832efd5a624bf547752c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f4d9abe5d10d12fa181036a7f1f9f6c577269ff638b832efd5a624bf547752c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f4d9abe5d10d12fa181036a7f1f9f6c577269ff638b832efd5a624bf547752c", kill_on_drop: false }`
[INFO] [stdout] 0f4d9abe5d10d12fa181036a7f1f9f6c577269ff638b832efd5a624bf547752c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+d902752866cbbdb331e3cf28ff6bba86ab0f6c62" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] be74d45baf6eb4bb02fe805b77f06f43debf5188fa49b48bf7b9bf1d3c861e0a
[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" "be74d45baf6eb4bb02fe805b77f06f43debf5188fa49b48bf7b9bf1d3c861e0a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking errno v0.2.5
[INFO] [stderr]    Compiling enum-display-derive v0.1.0
[INFO] [stderr]     Checking rmesg v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `kernel_log_timestamps_enable`
[INFO] [stdout]    --> src/lib.rs:336:9
[INFO] [stdout]     |
[INFO] [stdout] 336 |         kernel_log_timestamps_enable, rmesg, safely_wrapped_klogctl, KLogType, RMesgLinesIterator,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 59s
[INFO] running `Command { std: "docker" "inspect" "be74d45baf6eb4bb02fe805b77f06f43debf5188fa49b48bf7b9bf1d3c861e0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "be74d45baf6eb4bb02fe805b77f06f43debf5188fa49b48bf7b9bf1d3c861e0a", kill_on_drop: false }`
[INFO] [stdout] be74d45baf6eb4bb02fe805b77f06f43debf5188fa49b48bf7b9bf1d3c861e0a