[INFO] fetching crate proto-vulcan 0.1.3...
[INFO] checking proto-vulcan-0.1.3 against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] extracting crate proto-vulcan 0.1.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate proto-vulcan 0.1.3 on toolchain c9228570668803e3e6402770d55f23a12c9ae686
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate proto-vulcan 0.1.3
[INFO] finished tweaking crates.io crate proto-vulcan 0.1.3
[INFO] tweaked toml for crates.io crate proto-vulcan 0.1.3 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate proto-vulcan 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f75bcfbe80141eebc285700149da927bb1729250b1acca8c21f1519aaf3896c
[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" "6f75bcfbe80141eebc285700149da927bb1729250b1acca8c21f1519aaf3896c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f75bcfbe80141eebc285700149da927bb1729250b1acca8c21f1519aaf3896c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f75bcfbe80141eebc285700149da927bb1729250b1acca8c21f1519aaf3896c", kill_on_drop: false }`
[INFO] [stdout] 6f75bcfbe80141eebc285700149da927bb1729250b1acca8c21f1519aaf3896c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+c9228570668803e3e6402770d55f23a12c9ae686" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ee72b89dcbda797d91117516c5eb7af8fe6c67e0d44eaf15c036bd67ea078fd
[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" "7ee72b89dcbda797d91117516c5eb7af8fe6c67e0d44eaf15c036bd67ea078fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling derivative v2.1.1
[INFO] [stderr]    Compiling proto-vulcan-macros v0.1.3
[INFO] [stderr]     Checking proto-vulcan v0.1.3 (/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:289:12
[INFO] [stdout]     |
[INFO] [stdout] 289 | #![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:289:12
[INFO] [stdout]     |
[INFO] [stdout] 289 | #![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 33.15s
[INFO] running `Command { std: "docker" "inspect" "7ee72b89dcbda797d91117516c5eb7af8fe6c67e0d44eaf15c036bd67ea078fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ee72b89dcbda797d91117516c5eb7af8fe6c67e0d44eaf15c036bd67ea078fd", kill_on_drop: false }`
[INFO] [stdout] 7ee72b89dcbda797d91117516c5eb7af8fe6c67e0d44eaf15c036bd67ea078fd