[INFO] cloning repository https://github.com/mcwolle/playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mcwolle/playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcwolle%2Fplayground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcwolle%2Fplayground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25853ccbd35a5da7d2abf956e3c783a8a5862abe
[INFO] checking mcwolle/playground against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcwolle%2Fplayground" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mcwolle/playground on toolchain 2ad5292aea6328113b55968b4322528d48261316
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mcwolle/playground
[INFO] finished tweaking git repo https://github.com/mcwolle/playground
[INFO] tweaked toml for git repo https://github.com/mcwolle/playground written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/mcwolle/playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "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] 410c8c4f76f6631c4122967f2babd8d23f6745825247b4dc421ce738d16b848e
[INFO] running `Command { std: "docker" "start" "-a" "410c8c4f76f6631c4122967f2babd8d23f6745825247b4dc421ce738d16b848e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "410c8c4f76f6631c4122967f2babd8d23f6745825247b4dc421ce738d16b848e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "410c8c4f76f6631c4122967f2babd8d23f6745825247b4dc421ce738d16b848e", kill_on_drop: false }`
[INFO] [stdout] 410c8c4f76f6631c4122967f2babd8d23f6745825247b4dc421ce738d16b848e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "check" "--frozen" "--all" "--all-targets" "--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] 96c47344efb715d9bbc70d2cd922fd8a33c89433bb26a7bbab9b89a2a56d0dac
[INFO] running `Command { std: "docker" "start" "-a" "96c47344efb715d9bbc70d2cd922fd8a33c89433bb26a7bbab9b89a2a56d0dac", kill_on_drop: false }`
[INFO] [stderr]     Checking data-url v0.1.0 (https://github.com/servo/rust-url?rev=7f1bd6ce1c2fde599a757302a843a60e714c5f72#7f1bd6ce)
[INFO] [stderr]     Checking playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "96c47344efb715d9bbc70d2cd922fd8a33c89433bb26a7bbab9b89a2a56d0dac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96c47344efb715d9bbc70d2cd922fd8a33c89433bb26a7bbab9b89a2a56d0dac", kill_on_drop: false }`
[INFO] [stdout] 96c47344efb715d9bbc70d2cd922fd8a33c89433bb26a7bbab9b89a2a56d0dac