[INFO] fetching crate generator 0.6.21...
[INFO] checking generator-0.6.21 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate generator 0.6.21 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate generator 0.6.21 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate generator 0.6.21
[INFO] finished tweaking crates.io crate generator 0.6.21
[INFO] tweaked toml for crates.io crate generator 0.6.21 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate generator 0.6.21 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] c40fd692623b0899d06f121bf8615b066b9acebf7df1084779335b1bc0cfea02
[INFO] running `Command { std: "docker" "start" "-a" "c40fd692623b0899d06f121bf8615b066b9acebf7df1084779335b1bc0cfea02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c40fd692623b0899d06f121bf8615b066b9acebf7df1084779335b1bc0cfea02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c40fd692623b0899d06f121bf8615b066b9acebf7df1084779335b1bc0cfea02", kill_on_drop: false }`
[INFO] [stdout] c40fd692623b0899d06f121bf8615b066b9acebf7df1084779335b1bc0cfea02
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aca76960fc566dd609c67b7819b4e07904fd9440ff47912950ced5950e463fac
[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" "aca76960fc566dd609c67b7819b4e07904fd9440ff47912950ced5950e463fac", kill_on_drop: false }`
[INFO] [stderr]    Compiling generator v0.6.21 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "aca76960fc566dd609c67b7819b4e07904fd9440ff47912950ced5950e463fac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aca76960fc566dd609c67b7819b4e07904fd9440ff47912950ced5950e463fac", kill_on_drop: false }`
[INFO] [stdout] aca76960fc566dd609c67b7819b4e07904fd9440ff47912950ced5950e463fac