[INFO] fetching crate proto-vulcan 0.1.4...
[INFO] checking proto-vulcan-0.1.4 against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] extracting crate proto-vulcan 0.1.4 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate proto-vulcan 0.1.4 on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate proto-vulcan 0.1.4
[INFO] finished tweaking crates.io crate proto-vulcan 0.1.4
[INFO] tweaked toml for crates.io crate proto-vulcan 0.1.4 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate proto-vulcan 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48709aa5ae56c257329340fbe6e84fe69d9bb31a83cb78265a82297e9e5ef4eb
[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" "48709aa5ae56c257329340fbe6e84fe69d9bb31a83cb78265a82297e9e5ef4eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48709aa5ae56c257329340fbe6e84fe69d9bb31a83cb78265a82297e9e5ef4eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48709aa5ae56c257329340fbe6e84fe69d9bb31a83cb78265a82297e9e5ef4eb", kill_on_drop: false }`
[INFO] [stdout] 48709aa5ae56c257329340fbe6e84fe69d9bb31a83cb78265a82297e9e5ef4eb
[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" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5c6d8867b8066d275ddbeff333ec8dbc92a7a974227a98cf7e659ac9cf82866c
[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" "5c6d8867b8066d275ddbeff333ec8dbc92a7a974227a98cf7e659ac9cf82866c", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling proto-vulcan-macros v0.1.4
[INFO] [stderr]     Checking proto-vulcan v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `move_ref_pattern` has been stable since 1.48.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:306:12
[INFO] [stdout]     |
[INFO] [stdout] 306 | #![feature(move_ref_pattern)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `move_ref_pattern` has been stable since 1.48.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:306:12
[INFO] [stdout]     |
[INFO] [stdout] 306 | #![feature(move_ref_pattern)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.01s
[INFO] running `Command { std: "docker" "inspect" "5c6d8867b8066d275ddbeff333ec8dbc92a7a974227a98cf7e659ac9cf82866c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5c6d8867b8066d275ddbeff333ec8dbc92a7a974227a98cf7e659ac9cf82866c", kill_on_drop: false }`
[INFO] [stdout] 5c6d8867b8066d275ddbeff333ec8dbc92a7a974227a98cf7e659ac9cf82866c