[INFO] cloning repository https://github.com/Knapptr/Rust_Playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Knapptr/Rust_Playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnapptr%2FRust_Playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnapptr%2FRust_Playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 46016f15e7075d762facd53b2158ecd2e6fe0c72
[INFO] checking Knapptr/Rust_Playground against try#95813608313bff49cfc1afc393a946a3c085b772 for pr-148946
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKnapptr%2FRust_Playground" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Knapptr/Rust_Playground
[INFO] finished tweaking git repo https://github.com/Knapptr/Rust_Playground
[INFO] tweaked toml for git repo https://github.com/Knapptr/Rust_Playground written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Knapptr/Rust_Playground on toolchain 95813608313bff49cfc1afc393a946a3c085b772
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+95813608313bff49cfc1afc393a946a3c085b772" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Knapptr/Rust_Playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+95813608313bff49cfc1afc393a946a3c085b772" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+95813608313bff49cfc1afc393a946a3c085b772" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0fa356be27b46977a54a652276df9174e6cfe1b25a570b87dda8575c4f832dbe
[INFO] running `Command { std: "docker" "start" "-a" "0fa356be27b46977a54a652276df9174e6cfe1b25a570b87dda8575c4f832dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fa356be27b46977a54a652276df9174e6cfe1b25a570b87dda8575c4f832dbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fa356be27b46977a54a652276df9174e6cfe1b25a570b87dda8575c4f832dbe", kill_on_drop: false }`
[INFO] [stdout] 0fa356be27b46977a54a652276df9174e6cfe1b25a570b87dda8575c4f832dbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+95813608313bff49cfc1afc393a946a3c085b772" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8398f1b3ae34b830aebc5a515e5814ac4c9cd316698050a179c3e1260d805e6f
[INFO] running `Command { std: "docker" "start" "-a" "8398f1b3ae34b830aebc5a515e5814ac4c9cd316698050a179c3e1260d805e6f", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "8398f1b3ae34b830aebc5a515e5814ac4c9cd316698050a179c3e1260d805e6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8398f1b3ae34b830aebc5a515e5814ac4c9cd316698050a179c3e1260d805e6f", kill_on_drop: false }`
[INFO] [stdout] 8398f1b3ae34b830aebc5a515e5814ac4c9cd316698050a179c3e1260d805e6f