[INFO] cloning repository https://github.com/moisutsu-playground/rust-serde-yaml-playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/moisutsu-playground/rust-serde-yaml-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoisutsu-playground%2Frust-serde-yaml-playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoisutsu-playground%2Frust-serde-yaml-playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 18f59fef45ed0696d2fd9ef14fe810f1a0c34411
[INFO] checking moisutsu-playground/rust-serde-yaml-playground against try#bb9dbf1d07454a99066eabaabd5819851281494b for pr-80920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmoisutsu-playground%2Frust-serde-yaml-playground" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/moisutsu-playground/rust-serde-yaml-playground on toolchain bb9dbf1d07454a99066eabaabd5819851281494b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/moisutsu-playground/rust-serde-yaml-playground
[INFO] finished tweaking git repo https://github.com/moisutsu-playground/rust-serde-yaml-playground
[INFO] tweaked toml for git repo https://github.com/moisutsu-playground/rust-serde-yaml-playground written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/moisutsu-playground/rust-serde-yaml-playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+bb9dbf1d07454a99066eabaabd5819851281494b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+bb9dbf1d07454a99066eabaabd5819851281494b" "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] 938ffd2fed0c2687b5f4bc045fc792a51df07b9db84ee449e32f0c6641d09209
[INFO] running `Command { std: "docker" "start" "-a" "938ffd2fed0c2687b5f4bc045fc792a51df07b9db84ee449e32f0c6641d09209", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "938ffd2fed0c2687b5f4bc045fc792a51df07b9db84ee449e32f0c6641d09209", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "938ffd2fed0c2687b5f4bc045fc792a51df07b9db84ee449e32f0c6641d09209", kill_on_drop: false }`
[INFO] [stdout] 938ffd2fed0c2687b5f4bc045fc792a51df07b9db84ee449e32f0c6641d09209
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+bb9dbf1d07454a99066eabaabd5819851281494b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48d235f6e82abf1bf49eb45743623fdc842bbcbf2092a68c712c34363dbe47a8
[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" "48d235f6e82abf1bf49eb45743623fdc842bbcbf2092a68c712c34363dbe47a8", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-serde-yaml-playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "48d235f6e82abf1bf49eb45743623fdc842bbcbf2092a68c712c34363dbe47a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48d235f6e82abf1bf49eb45743623fdc842bbcbf2092a68c712c34363dbe47a8", kill_on_drop: false }`
[INFO] [stdout] 48d235f6e82abf1bf49eb45743623fdc842bbcbf2092a68c712c34363dbe47a8