[INFO] fetching crate cargo-snippet 0.6.5...
[INFO] checking cargo-snippet-0.6.5 against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] extracting crate cargo-snippet 0.6.5 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate cargo-snippet 0.6.5 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 cargo-snippet 0.6.5
[INFO] finished tweaking crates.io crate cargo-snippet 0.6.5
[INFO] tweaked toml for crates.io crate cargo-snippet 0.6.5 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate cargo-snippet 0.6.5 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-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] f85643a8ca755f77c036bbc33404910c6c668650033ebf41e99134a03ddfa941
[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" "f85643a8ca755f77c036bbc33404910c6c668650033ebf41e99134a03ddfa941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f85643a8ca755f77c036bbc33404910c6c668650033ebf41e99134a03ddfa941", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f85643a8ca755f77c036bbc33404910c6c668650033ebf41e99134a03ddfa941", kill_on_drop: false }`
[INFO] [stdout] f85643a8ca755f77c036bbc33404910c6c668650033ebf41e99134a03ddfa941
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 269a1b71c8a77e9fb9834605d08d64a1ca0d2d808f51d8be0b88d928eb408320
[INFO] running `Command { std: "docker" "start" "-a" "269a1b71c8a77e9fb9834605d08d64a1ca0d2d808f51d8be0b88d928eb408320", kill_on_drop: false }`
[INFO] [stderr]     Checking cargo-snippet v0.6.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "269a1b71c8a77e9fb9834605d08d64a1ca0d2d808f51d8be0b88d928eb408320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "269a1b71c8a77e9fb9834605d08d64a1ca0d2d808f51d8be0b88d928eb408320", kill_on_drop: false }`
[INFO] [stdout] 269a1b71c8a77e9fb9834605d08d64a1ca0d2d808f51d8be0b88d928eb408320