[INFO] fetching crate downloads 0.0.2...
[INFO] checking downloads-0.0.2 against master#c9228570668803e3e6402770d55f23a12c9ae686 for pr-79472
[INFO] extracting crate downloads 0.0.2 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate downloads 0.0.2 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 downloads 0.0.2
[INFO] finished tweaking crates.io crate downloads 0.0.2
[INFO] tweaked toml for crates.io crate downloads 0.0.2 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate downloads 0.0.2 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 3de81c77d41651b6b0fe37f4bc009a2e362d8ccb00d7d12e68fb9c1293dd94bb
[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" "3de81c77d41651b6b0fe37f4bc009a2e362d8ccb00d7d12e68fb9c1293dd94bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3de81c77d41651b6b0fe37f4bc009a2e362d8ccb00d7d12e68fb9c1293dd94bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3de81c77d41651b6b0fe37f4bc009a2e362d8ccb00d7d12e68fb9c1293dd94bb", kill_on_drop: false }`
[INFO] [stdout] 3de81c77d41651b6b0fe37f4bc009a2e362d8ccb00d7d12e68fb9c1293dd94bb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] ff86ef0940dca023cf751ae01653ce38dc4b7fba0cf3e604128d51f45b99cb28
[INFO] running `Command { std: "docker" "start" "-a" "ff86ef0940dca023cf751ae01653ce38dc4b7fba0cf3e604128d51f45b99cb28", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.41
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling curl v0.4.23
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking socket2 v0.3.11
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]    Compiling curl-sys v0.4.21
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking downloads v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 25.18s
[INFO] running `Command { std: "docker" "inspect" "ff86ef0940dca023cf751ae01653ce38dc4b7fba0cf3e604128d51f45b99cb28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff86ef0940dca023cf751ae01653ce38dc4b7fba0cf3e604128d51f45b99cb28", kill_on_drop: false }`
[INFO] [stdout] ff86ef0940dca023cf751ae01653ce38dc4b7fba0cf3e604128d51f45b99cb28