[INFO] fetching crate ungrammar2json 1.0.0...
[INFO] checking ungrammar2json-1.0.0 against try#9c1dcf141bc0875407c4eb36972857bd3db713e2 for pr-81863
[INFO] extracting crate ungrammar2json 1.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate ungrammar2json 1.0.0 on toolchain 9c1dcf141bc0875407c4eb36972857bd3db713e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ungrammar2json 1.0.0
[INFO] finished tweaking crates.io crate ungrammar2json 1.0.0
[INFO] tweaked toml for crates.io crate ungrammar2json 1.0.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate ungrammar2json 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ungrammar v1.1.0
[INFO] [stderr]   Downloaded write-json v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c726d50bcb3d54d38e8bd06ff045c9d9991c6133daba301e3c6ab439ad8aee89
[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" "c726d50bcb3d54d38e8bd06ff045c9d9991c6133daba301e3c6ab439ad8aee89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c726d50bcb3d54d38e8bd06ff045c9d9991c6133daba301e3c6ab439ad8aee89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c726d50bcb3d54d38e8bd06ff045c9d9991c6133daba301e3c6ab439ad8aee89", kill_on_drop: false }`
[INFO] [stdout] c726d50bcb3d54d38e8bd06ff045c9d9991c6133daba301e3c6ab439ad8aee89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+9c1dcf141bc0875407c4eb36972857bd3db713e2" "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] 6b043a98b45c03dbc38dc5f5cecc9776a0bc3a4291a74f848527f1c9a6a74b31
[INFO] running `Command { std: "docker" "start" "-a" "6b043a98b45c03dbc38dc5f5cecc9776a0bc3a4291a74f848527f1c9a6a74b31", kill_on_drop: false }`
[INFO] [stderr]     Checking ungrammar v1.1.0
[INFO] [stderr]     Checking write-json v0.1.1
[INFO] [stderr]     Checking ungrammar2json v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "6b043a98b45c03dbc38dc5f5cecc9776a0bc3a4291a74f848527f1c9a6a74b31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b043a98b45c03dbc38dc5f5cecc9776a0bc3a4291a74f848527f1c9a6a74b31", kill_on_drop: false }`
[INFO] [stdout] 6b043a98b45c03dbc38dc5f5cecc9776a0bc3a4291a74f848527f1c9a6a74b31