[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#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcwolle%2Fplayground" "/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/mcwolle/playground on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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-8/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] e21f2c35d370302a2a4147254899bc5b36aa2a00fbf19a19fb21541cbf31a5b3
[INFO] running `Command { std: "docker" "start" "-a" "e21f2c35d370302a2a4147254899bc5b36aa2a00fbf19a19fb21541cbf31a5b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e21f2c35d370302a2a4147254899bc5b36aa2a00fbf19a19fb21541cbf31a5b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e21f2c35d370302a2a4147254899bc5b36aa2a00fbf19a19fb21541cbf31a5b3", kill_on_drop: false }`
[INFO] [stdout] e21f2c35d370302a2a4147254899bc5b36aa2a00fbf19a19fb21541cbf31a5b3
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56a0c930ee3f32e8fce846e0e4cad3618ce916aa622f40e396d9009fbfc372b2
[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" "56a0c930ee3f32e8fce846e0e4cad3618ce916aa622f40e396d9009fbfc372b2", kill_on_drop: false }`
[INFO] [stderr]     Checking matches v0.1.8
[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 0.82s
[INFO] running `Command { std: "docker" "inspect" "56a0c930ee3f32e8fce846e0e4cad3618ce916aa622f40e396d9009fbfc372b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56a0c930ee3f32e8fce846e0e4cad3618ce916aa622f40e396d9009fbfc372b2", kill_on_drop: false }`
[INFO] [stdout] 56a0c930ee3f32e8fce846e0e4cad3618ce916aa622f40e396d9009fbfc372b2