[INFO] fetching crate generator 0.6.21...
[INFO] checking generator-0.6.21 against try#353a0a223066e9f46a1d935f2271a26c3c5002bb for pr-75180
[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 353a0a223066e9f46a1d935f2271a26c3c5002bb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "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" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "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" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a815b733877c81febc5a3a8f28e88fb9fe7301ab381a31b9d5f9c2b16002404
[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" "5a815b733877c81febc5a3a8f28e88fb9fe7301ab381a31b9d5f9c2b16002404", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a815b733877c81febc5a3a8f28e88fb9fe7301ab381a31b9d5f9c2b16002404", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a815b733877c81febc5a3a8f28e88fb9fe7301ab381a31b9d5f9c2b16002404", kill_on_drop: false }`
[INFO] [stdout] 5a815b733877c81febc5a3a8f28e88fb9fe7301ab381a31b9d5f9c2b16002404
[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" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9bef1798457909141d47b2cdb2250a64a117fc816dc1f2468631a2e9e4fc21d8
[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" "9bef1798457909141d47b2cdb2250a64a117fc816dc1f2468631a2e9e4fc21d8", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v0.1.10
[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 2.75s
[INFO] running `Command { std: "docker" "inspect" "9bef1798457909141d47b2cdb2250a64a117fc816dc1f2468631a2e9e4fc21d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9bef1798457909141d47b2cdb2250a64a117fc816dc1f2468631a2e9e4fc21d8", kill_on_drop: false }`
[INFO] [stdout] 9bef1798457909141d47b2cdb2250a64a117fc816dc1f2468631a2e9e4fc21d8