[INFO] fetching crate snap 1.0.3...
[INFO] checking snap-1.0.3 against master#339e19697a39a78f4d669c217b7d21109215de41 for pr-81213
[INFO] extracting crate snap 1.0.3 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate snap 1.0.3 on toolchain 339e19697a39a78f4d669c217b7d21109215de41
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate snap 1.0.3
[INFO] finished tweaking crates.io crate snap 1.0.3
[INFO] tweaked toml for crates.io crate snap 1.0.3 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate snap 1.0.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 44d9626a943f810f9b6d868976e9e0fda8530c354733007e7da0a6818437a8e9
[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" "44d9626a943f810f9b6d868976e9e0fda8530c354733007e7da0a6818437a8e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "44d9626a943f810f9b6d868976e9e0fda8530c354733007e7da0a6818437a8e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44d9626a943f810f9b6d868976e9e0fda8530c354733007e7da0a6818437a8e9", kill_on_drop: false }`
[INFO] [stdout] 44d9626a943f810f9b6d868976e9e0fda8530c354733007e7da0a6818437a8e9
[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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+339e19697a39a78f4d669c217b7d21109215de41" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c203c62b649c40e0529d5fa7493eb3d6b9d65b7b9266d00a81564ca6235eb6af
[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" "c203c62b649c40e0529d5fa7493eb3d6b9d65b7b9266d00a81564ca6235eb6af", kill_on_drop: false }`
[INFO] [stderr]    Compiling snap v1.0.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.49s
[INFO] running `Command { std: "docker" "inspect" "c203c62b649c40e0529d5fa7493eb3d6b9d65b7b9266d00a81564ca6235eb6af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c203c62b649c40e0529d5fa7493eb3d6b9d65b7b9266d00a81564ca6235eb6af", kill_on_drop: false }`
[INFO] [stdout] c203c62b649c40e0529d5fa7493eb3d6b9d65b7b9266d00a81564ca6235eb6af