[INFO] fetching crate tranquillity 0.0.1...
[INFO] checking tranquillity-0.0.1 against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] extracting crate tranquillity 0.0.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tranquillity 0.0.1 on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tranquillity 0.0.1
[INFO] finished tweaking crates.io crate tranquillity 0.0.1
[INFO] tweaked toml for crates.io crate tranquillity 0.0.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate tranquillity 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "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] d93c7f24d745da615c8f7f2141992065a8442c2a93e25eb5c355ba5b4a4b0823
[INFO] running `Command { std: "docker" "start" "-a" "d93c7f24d745da615c8f7f2141992065a8442c2a93e25eb5c355ba5b4a4b0823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d93c7f24d745da615c8f7f2141992065a8442c2a93e25eb5c355ba5b4a4b0823", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d93c7f24d745da615c8f7f2141992065a8442c2a93e25eb5c355ba5b4a4b0823", kill_on_drop: false }`
[INFO] [stdout] d93c7f24d745da615c8f7f2141992065a8442c2a93e25eb5c355ba5b4a4b0823
[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=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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c921c0612c3ca0e9228414e6cb0d3ff0c38a5bfcd2f13912f07cd6a48020d02
[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" "5c921c0612c3ca0e9228414e6cb0d3ff0c38a5bfcd2f13912f07cd6a48020d02", kill_on_drop: false }`
[INFO] [stderr]     Checking tranquillity v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "5c921c0612c3ca0e9228414e6cb0d3ff0c38a5bfcd2f13912f07cd6a48020d02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c921c0612c3ca0e9228414e6cb0d3ff0c38a5bfcd2f13912f07cd6a48020d02", kill_on_drop: false }`
[INFO] [stdout] 5c921c0612c3ca0e9228414e6cb0d3ff0c38a5bfcd2f13912f07cd6a48020d02